feat(bsp/gd32f1-f4/drv_sdio):增加gd32下sdio驱动 (#6176)

bsp/gd32/arm/libraries/GD32F10x_Firmware_Library/SConscript

@@ -48,6 +48,7 @@ if GetDepend(['RT_USING_WDT']):
 
 if GetDepend(['RT_USING_SDIO']):
     src += ['GD32F10x_standard_peripheral/Source/gd32f10x_sdio.c']
+    src += ['GD32F10x_standard_peripheral/Source/gd32f10x_dma.c']
 
 path = [
     cwd + '/CMSIS/GD/GD32F10x/Include',

bsp/gd32/arm/libraries/GD32F20x_Firmware_Library/SConscript

@@ -44,6 +44,7 @@ if GetDepend(['RT_USING_WDT']):
 
 if GetDepend(['RT_USING_SDIO']):
     src += ['GD32F20x_standard_peripheral/Source/gd32f20x_sdio.c']
+    src += ['GD32F20x_standard_peripheral/Source/gd32f20x_dma.c']    
 
 path = [
     cwd + '/CMSIS/GD/GD32F20x/Include',

bsp/gd32/arm/libraries/GD32F30x_Firmware_Library/SConscript

@@ -44,6 +44,7 @@ if GetDepend(['RT_USING_WDT']):
 
 if GetDepend(['RT_USING_SDIO']):
     src += ['GD32F30x_standard_peripheral/Source/gd32f30x_sdio.c']
+    src += ['GD32F30x_standard_peripheral/Source/gd32f30x_dma.c']
 
 path = [
     cwd + '/CMSIS/GD/GD32F30x/Include',

bsp/gd32/arm/libraries/GD32F4xx_Firmware_Library/SConscript

@@ -45,6 +45,7 @@ if GetDepend(['RT_USING_WDT']):
 
 if GetDepend(['RT_USING_SDIO']):
     src += ['GD32F4xx_standard_peripheral/Source/gd32f4xx_sdio.c']
+    src += ['GD32F4xx_standard_peripheral/Source/gd32f4xx_dma.c']
 
 path = [
     cwd + '/CMSIS/GD/GD32F4xx/Include',

bsp/gd32/arm/libraries/gd32_drivers/SConscript

@@ -44,6 +44,10 @@ if GetDepend('RT_USING_HWTIMER'):
 # add adc drivers.
 if GetDepend('RT_USING_ADC'):
     src += ['drv_adc.c']
+    
+# add sdio drivers.
+if GetDepend('RT_USING_SDIO'):
+    src += ['drv_sdio.c']
 
 path = [cwd]
 

bsp/gd32/arm/libraries/gd32_drivers/drv_log.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-11-15     SummerGift   first version
+ */
+
+/*
+ * NOTE: DO NOT include this file on the header file.
+ */
+
+#ifndef LOG_TAG
+#define DBG_TAG               "drv"
+#else
+#define DBG_TAG               LOG_TAG
+#endif /* LOG_TAG */
+
+#ifdef DRV_DEBUG
+#define DBG_LVL               DBG_LOG
+#else
+#define DBG_LVL               DBG_INFO
+#endif /* DRV_DEBUG */
+
+#include <rtdbg.h>

bsp/gd32/arm/libraries/gd32_drivers/drv_sdio.c

@@ -0,0 +1,2927 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author            Notes
+ * 2022-07-20     jiezhi320    the first version
+ */
+#include <stddef.h>
+#include <rthw.h>
+#include <rtthread.h>
+
+#ifdef RT_USING_SDIO
+#include "drv_sdio.h"
+
+
+//#define DRV_DEBUG
+#define LOG_TAG  "drv.sdio"
+#include "drv_log.h"
+
+#define SDIO_DMA_USE_IPC     0//1:ʹÓÃipc×öͬ²½
+
+/* card status of R1 definitions */
+#define SD_R1_OUT_OF_RANGE                  BIT(31)                   /* command's argument was out of the allowed range */
+#define SD_R1_ADDRESS_ERROR                 BIT(30)                   /* misaligned address which did not match the block length */
+#define SD_R1_BLOCK_LEN_ERROR               BIT(29)                   /* transferred block length is not allowed */
+#define SD_R1_ERASE_SEQ_ERROR               BIT(28)                   /* an error in the sequence of erase commands occurred */
+#define SD_R1_ERASE_PARAM                   BIT(27)                   /* an invalid selection of write-blocks for erase occurred */
+#define SD_R1_WP_VIOLATION                  BIT(26)                   /* the host attempts to write to a protected block or to the temporary or permanent write protected card */
+#define SD_R1_CARD_IS_LOCKED                BIT(25)                   /* the card is locked by the host */
+#define SD_R1_LOCK_UNLOCK_FAILED            BIT(24)                   /* a sequence or password error has been detected in lock/unlock card command */
+#define SD_R1_COM_CRC_ERROR                 BIT(23)                   /* CRC check of the previous command failed */
+#define SD_R1_ILLEGAL_COMMAND               BIT(22)                   /* command not legal for the card state */
+#define SD_R1_CARD_ECC_FAILED               BIT(21)                   /* card internal ECC was applied but failed to correct the data */
+#define SD_R1_CC_ERROR                      BIT(20)                   /* internal card controller error */
+#define SD_R1_GENERAL_UNKNOWN_ERROR         BIT(19)                   /* a general or an unknown error occurred during the operation */
+#define SD_R1_CSD_OVERWRITE                 BIT(16)                   /* read only section of the CSD does not match or attempt to reverse the copy or permanent WP bits */
+#define SD_R1_WP_ERASE_SKIP                 BIT(15)                   /* partial address space was erased */
+#define SD_R1_CARD_ECC_DISABLED             BIT(14)                   /* command has been executed without using the internal ECC */
+#define SD_R1_ERASE_RESET                   BIT(13)                   /* an erase sequence was cleared before executing */
+#define SD_R1_READY_FOR_DATA                BIT(8)                    /* correspond to buffer empty signaling on the bus */
+#define SD_R1_APP_CMD                       BIT(5)                    /* card will expect ACMD */
+#define SD_R1_AKE_SEQ_ERROR                 BIT(3)                    /* error in the sequence of the authentication process */
+#define SD_R1_ERROR_BITS                    (uint32_t)0xFDF9E008      /* all the R1 error bits */
+
+/* card status of R6 definitions */
+#define SD_R6_COM_CRC_ERROR                 BIT(15)                   /* CRC check of the previous command failed */
+#define SD_R6_ILLEGAL_COMMAND               BIT(14)                   /* command not legal for the card state */
+#define SD_R6_GENERAL_UNKNOWN_ERROR         BIT(13)                   /* a general or an unknown error occurred during the operation */
+
+/* card state */
+#define SD_CARDSTATE_IDLE                   ((uint8_t)0x00)           /* card is in idle state */
+#define SD_CARDSTATE_READY                  ((uint8_t)0x01)           /* card is in ready state */
+#define SD_CARDSTATE_IDENTIFICAT            ((uint8_t)0x02)           /* card is in identificat state */
+#define SD_CARDSTATE_STANDBY                ((uint8_t)0x03)           /* card is in standby state */
+#define SD_CARDSTATE_TRANSFER               ((uint8_t)0x04)           /* card is in transfer state */
+#define SD_CARDSTATE_DATA                   ((uint8_t)0x05)           /* card is in data sending state */
+#define SD_CARDSTATE_RECEIVING              ((uint8_t)0x06)           /* card is in receiving state */
+#define SD_CARDSTATE_PROGRAMMING            ((uint8_t)0x07)           /* card is in programming state */
+#define SD_CARDSTATE_DISCONNECT             ((uint8_t)0x08)           /* card is in disconnect state */
+#define SD_CARDSTATE_LOCKED                 ((uint32_t)0x02000000)    /* card is in locked state */
+
+#define SD_CHECK_PATTERN                    ((uint32_t)0x000001AA)    /* check pattern for CMD8 */
+#define SD_VOLTAGE_WINDOW                   ((uint32_t)0x80100000)    /* host 3.3V request in ACMD41 */
+
+/* parameters for ACMD41(voltage validation) */
+#define SD_HIGH_CAPACITY                    ((uint32_t)0x40000000)    /* high capacity SD memory card */
+#define SD_STD_CAPACITY                     ((uint32_t)0x00000000)    /* standard capacity SD memory card */
+
+/* SD bus width, check SCR register */
+#define SD_BUS_WIDTH_4BIT                   ((uint32_t)0x00040000)    /* 4-bit width bus mode */
+#define SD_BUS_WIDTH_1BIT                   ((uint32_t)0x00010000)    /* 1-bit width bus mode */
+
+/* masks for SCR register */
+#define SD_MASK_0_7BITS                     ((uint32_t)0x000000FF)    /* mask [7:0] bits */
+#define SD_MASK_8_15BITS                    ((uint32_t)0x0000FF00)    /* mask [15:8] bits */
+#define SD_MASK_16_23BITS                   ((uint32_t)0x00FF0000)    /* mask [23:16] bits */
+#define SD_MASK_24_31BITS                   ((uint32_t)0xFF000000)    /* mask [31:24] bits */
+
+#define SDIO_FIFO_ADDR                      ((uint32_t)0x40012C80)    /* address of SDIO_FIFO */
+#define SD_FIFOHALF_WORDS                   ((uint32_t)0x00000008)    /* words of FIFO half full/empty */
+#define SD_FIFOHALF_BYTES                   ((uint32_t)0x00000020)    /* bytes of FIFO half full/empty */
+
+#define SD_DATATIMEOUT                      ((uint32_t)0xFFFFFFFF)    /* DSM data timeout */
+#define SD_MAX_VOLT_VALIDATION              ((uint32_t)0x0000FFFF)    /* the maximum times of voltage validation */
+#define SD_MAX_DATA_LENGTH                  ((uint32_t)0x01FFFFFF)    /* the maximum length of data */
+#define SD_ALLZERO                          ((uint32_t)0x00000000)    /* all zero */
+#define SD_RCA_SHIFT                        ((uint8_t)0x10)           /* RCA shift bits */
+#define SD_CLK_DIV_INIT                     ((uint16_t)0x0076)        /* SD clock division in initialization phase */
+#define SD_CLK_DIV_TRANS                    ((uint16_t)0x0002)        /* SD clock division in transmission phase */
+
+#define SDIO_MASK_INTC_FLAGS                ((uint32_t)0x00C007FF)    /* mask flags of SDIO_INTC */
+
+typedef struct{
+    uint32_t sd_scr[2] ;          /* content of SCR register */
+    sdio_card_type_enum cardtype; /* SD card type */
+    uint32_t sd_csd[4];           /* content of CSD register */
+    uint32_t sd_cid[4];           /* content of CID register */
+    uint16_t sd_rca;              /* RCA of SD card */
+    uint32_t transmode;
+    uint32_t totalnumber_bytes;
+    uint32_t stopcondition;
+    __IO sd_error_enum transerror;
+    __IO uint32_t transend;
+    __IO uint32_t number_bytes;
+}sdcard_opration_t;
+
+static sdcard_opration_t card_opration = {
+    .sd_scr = {0,0},
+    .cardtype = SDIO_STD_CAPACITY_SD_CARD_V1_1,
+    .sd_csd = {0,0,0,0},
+    .sd_cid = {0,0,0,0},
+    .sd_rca = 0,
+    .transmode = SD_POLLING_MODE,
+    .totalnumber_bytes = 0,
+    .stopcondition = 0,
+    .transerror = SD_OK,
+    .transend = 0,
+    .number_bytes = 0,
+};
+
+/* set sector size to 512 */
+#define SECTOR_SIZE     512
+
+typedef struct
+{
+    struct rt_device sdcard_device;
+    sd_card_info_struct sd_cardinfo;
+    IRQn_Type irqn;
+    struct rt_mutex sd_lock;
+    struct rt_semaphore sem;
+    char *device_name;
+} gd32_sdio_t;
+
+static gd32_sdio_t sd = {
+    .irqn = SDIO_IRQn,
+    .device_name = "sd0",
+};
+
+/* check if the command sent error occurs */
+static sd_error_enum cmdsent_error_check(void);
+/* check if error occurs for R1 response */
+static sd_error_enum r1_error_check(uint8_t cmdindex);
+/* check if error type for R1 response */
+static sd_error_enum r1_error_type_check(uint32_t resp);
+/* check if error occurs for R2 response */
+static sd_error_enum r2_error_check(void);
+/* check if error occurs for R3 response */
+static sd_error_enum r3_error_check(void);
+/* check if error occurs for R6 response */
+static sd_error_enum r6_error_check(uint8_t cmdindex, uint16_t *prca);
+/* check if error occurs for R7 response */
+static sd_error_enum r7_error_check(void);
+
+/* get the state which the card is in */
+static sd_error_enum sd_card_state_get(uint8_t *pcardstate);
+/* configure the bus width mode */
+static sd_error_enum sd_bus_width_config(uint32_t buswidth);
+/* get the SCR of corresponding card */
+static sd_error_enum sd_scr_get(uint16_t rca, uint32_t *pscr);
+/* get the data block size */
+static uint32_t sd_datablocksize_get(uint16_t bytesnumber);
+
+/* configure the GPIO of SDIO interface */
+static void gpio_config(void);
+/* configure the RCU of SDIO and DMA */
+static void rcu_config(void);
+/* configure the DMA for SDIO transfer request */
+static void dma_transfer_config(uint32_t *srcbuf, uint32_t bufsize);
+/* configure the DMA for SDIO reveive request */
+static void dma_receive_config(uint32_t *dstbuf, uint32_t bufsize);
+
+static void nvic_config(void);
+static sd_error_enum sd_config(void);
+static void card_info_get(void);
+#if SDIO_DMA_USE_IPC
+static void sdio_dma_irq_config(void);
+#endif
+
+/* RT-Thread Device Driver Interface */
+static rt_err_t rt_sdcard_init(rt_device_t dev)
+{
+    rt_err_t ret = RT_EOK;
+    sd_error_enum sd_error = SD_OK;
+    uint16_t retry = 5;
+
+    ret = rt_mutex_init(&sd.sd_lock, "sd_lock", RT_IPC_FLAG_FIFO);
+
+    if (RT_EOK != ret) {
+        LOG_E("init mutex failed\n");
+        return ret;
+    }
+
+    ret = rt_sem_init(&sd.sem, "sd_sem", 0, RT_IPC_FLAG_FIFO);
+
+    if (RT_EOK != ret) {
+        LOG_E("init semaphore failed\n");
+        return ret;
+    }
+
+    nvic_irq_enable(sd.irqn, 0, 0);
+
+    do {
+        /* initialize the card, get the card information and configurate the bus mode and transfer mode */
+        sd_error = sd_config();
+    } while((SD_OK != sd_error) && (--retry));
+
+    if (retry) {
+        LOG_I("\r\n Card init success!\r\n");
+    }
+    else {
+        LOG_E("\r\n Card init failed!\r\n");
+        ret = -RT_EIO;
+        return ret;
+    }
+
+    card_info_get();
+
+    return ret;
+
+}
+
+static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
+{
+    return RT_EOK;
+}
+
+static rt_err_t rt_sdcard_close(rt_device_t dev)
+{
+    return RT_EOK;
+}
+
+static uint32_t dma_buffer[SECTOR_SIZE/sizeof(uint32_t)];
+static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
+{
+    RT_ASSERT(dev != RT_NULL);
+
+    sd_error_enum sd_error;
+    uint32_t status;
+    gd32_sdio_t *sd = (gd32_sdio_t *)dev->user_data;
+
+    if (!buffer) {
+        return 0;
+    }
+
+    rt_mutex_take(&sd->sd_lock, RT_WAITING_FOREVER);
+
+    if(((uint32_t)buffer & 0x03) != 0)
+    {
+        /* non-aligned. */
+        uint32_t i;
+        uint32_t sector_adr;
+        uint32_t* copy_buffer;
+
+        sector_adr = pos*SECTOR_SIZE;
+        copy_buffer = (uint32_t*)buffer;
+
+        for(i=0; i<size; i++){
+            sd_error = sd_block_read((uint32_t*)dma_buffer, sector_adr, SECTOR_SIZE);
+
+            rt_memcpy(copy_buffer, dma_buffer, SECTOR_SIZE);
+            sector_adr += SECTOR_SIZE;
+            copy_buffer += SECTOR_SIZE;
+        }
+    }
+    else {
+        if (size == 1){
+            sd_error = sd_block_read((uint32_t*)buffer, pos*SECTOR_SIZE, SECTOR_SIZE);
+        }
+        else {
+            sd_error = sd_multiblocks_read((uint32_t*)buffer, pos*SECTOR_SIZE, SECTOR_SIZE, size);
+        }
+    }
+
+    rt_mutex_release(&sd->sd_lock);
+
+    if (sd_error == SD_OK){
+        return size;
+    }
+    else {
+        return 0;
+    }
+}
+
+static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
+{
+#define WR_RETRY_TIMES 2
+
+    RT_ASSERT(dev != RT_NULL);
+
+    uint8_t retry = 0;
+    sd_error_enum sd_error;
+    uint32_t status;
+    gd32_sdio_t *sd = (gd32_sdio_t *)dev->user_data;
+
+    rt_mutex_take(&sd->sd_lock, RT_WAITING_FOREVER);
+
+    if (((uint32_t)buffer & 0x03) != 0) {
+        /* non-aligned. */
+        uint32_t i;
+        rt_size_t sector_adr;
+        uint32_t* copy_buffer;
+
+        sector_adr = pos*SECTOR_SIZE;
+        copy_buffer = (uint32_t*)buffer;
+
+        for (i=0; i<size; i++) {
+            retry = WR_RETRY_TIMES;
+            rt_memcpy(dma_buffer, copy_buffer, SECTOR_SIZE);
+
+            while (retry > 0) {
+                sd_error = sd_block_write((uint32_t*)dma_buffer, sector_adr, SECTOR_SIZE);
+                retry--;
+                if (sd_error == SD_OK) {
+                    break;
+                }
+            }
+
+            sector_adr += SECTOR_SIZE;
+            copy_buffer += SECTOR_SIZE;
+        }
+    }
+    else {
+        retry = WR_RETRY_TIMES;
+
+        if (size == 1) {
+            while (retry > 0) {
+                sd_error = sd_block_write((uint32_t*)buffer, pos*SECTOR_SIZE, SECTOR_SIZE);
+                retry--;
+                if (sd_error == SD_OK) {
+                    break;
+                }
+            }
+        }
+        else {
+            while (retry > 0) {
+                sd_error = sd_multiblocks_write((uint32_t*)buffer, pos*SECTOR_SIZE, SECTOR_SIZE, size);
+                retry--;
+                if (sd_error == SD_OK) {
+                    break;
+                }
+            }
+        }
+    }
+
+    rt_mutex_release(&sd->sd_lock);
+
+    if (!retry) {
+        LOG_D("sdio e:%d r:%d\n", sd_error, retry);
+    }
+    if (sd_error == SD_OK) {
+        return size;
+    }
+    else {
+        return 0;
+    }
+}
+
+static rt_err_t rt_sdcard_control(rt_device_t dev, int cmd, void *args)
+{
+    RT_ASSERT(dev != RT_NULL);
+
+    gd32_sdio_t *sd = (gd32_sdio_t *)dev->user_data;
+
+    if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME) {
+
+        struct rt_device_blk_geometry *geometry;
+
+        geometry = (struct rt_device_blk_geometry *)args;
+        if (geometry == RT_NULL)
+            return -RT_ERROR;
+
+        geometry->bytes_per_sector = 512;
+        geometry->block_size =  sd->sd_cardinfo.card_blocksize;
+        if (sd->sd_cardinfo.card_type == SDIO_HIGH_CAPACITY_SD_CARD)
+            geometry->sector_count = (sd->sd_cardinfo.card_csd.c_size + 1) * 1024;
+        else
+            geometry->sector_count = sd->sd_cardinfo.card_capacity/sd->sd_cardinfo.card_blocksize;
+    }
+
+    return RT_EOK;
+}
+
+int rt_hw_sdcard_init(void)
+{
+    /* register sdcard device */
+    sd.sdcard_device.type      = RT_Device_Class_Block;
+    sd.sdcard_device.init      = rt_sdcard_init;
+    sd.sdcard_device.open      = rt_sdcard_open;
+    sd.sdcard_device.close     = rt_sdcard_close;
+    sd.sdcard_device.read      = rt_sdcard_read;
+    sd.sdcard_device.write     = rt_sdcard_write;
+    sd.sdcard_device.control   = rt_sdcard_control;
+    sd.sdcard_device.user_data = &sd;
+
+    rt_device_register(&sd.sdcard_device, sd.device_name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
+
+    return RT_EOK;
+}
+
+INIT_DEVICE_EXPORT(rt_hw_sdcard_init);
+
+
+/*!
+    \brief      initialize the card, get the card information, set the bus mode and transfer mode
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_config(void)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t cardstate = 0;
+
+    /* initialize the card */
+    status = sd_init();
+    if(SD_OK == status){
+        status = sd_card_information_get(&sd.sd_cardinfo);
+    }
+    if(SD_OK == status){
+        status = sd_card_select_deselect(sd.sd_cardinfo.card_rca);
+    }
+    status = sd_cardstatus_get(&cardstate);
+    if(cardstate & 0x02000000){
+        LOG_D("\r\n The card is locked!");
+#if 0
+        /* unlock the card if necessary */
+        status = sd_lock_unlock(SD_UNLOCK);
+        if(SD_OK != status){
+            LOG_D("\r\n Unlock failed!");
+            while (1){
+            }
+        }else{
+            LOG_W("\r\n The card is unlocked! Please reset MCU!");
+        }
+#endif
+        while (1){
+        }
+    }
+    if ((SD_OK == status) && (!(cardstate & 0x02000000)))
+    {
+        /* set bus mode */
+        status = sd_bus_mode_config(SDIO_BUSMODE_4BIT);
+//        status = sd_bus_mode_config( SDIO_BUSMODE_1BIT );
+    }
+    if (SD_OK == status)
+    {
+        /* set data transfer mode */
+        status = sd_transfer_mode_config(SD_DMA_MODE);
+        //status = sd_transfer_mode_config(SD_POLLING_MODE);
+    }
+    return status;
+}
+
+/*!
+    \brief      get the card information and print it out by USRAT
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+void card_info_get(void)
+{
+    uint8_t sd_spec, sd_spec3, sd_spec4, sd_security;
+    uint32_t block_count, block_size;
+    uint16_t temp_ccc;
+
+    LOG_D("\r\nCard information:");
+
+    sd_spec = (card_opration.sd_scr[1] & 0x0F000000) >> 24;
+    sd_spec3 = (card_opration.sd_scr[1] & 0x00008000) >> 15;
+    sd_spec4 = (card_opration.sd_scr[1] & 0x00000400) >> 10;
+    if(2 == sd_spec){
+        if(1 == sd_spec3){
+            if(1 == sd_spec4){
+                LOG_D("\r\n## Card version 4.xx ##");
+            }else{
+                LOG_D("\r\n## Card version 3.0x ##");
+            }
+        }else{
+            LOG_D("\r\n## Card version 2.00 ##");
+        }
+    }else if(1 == sd_spec){
+        LOG_D("\r\n## Card version 1.10 ##");
+    }else if(0 == sd_spec){
+        LOG_D("\r\n## Card version 1.0x ##");
+    }
+
+    sd_security = (card_opration.sd_scr[1] & 0x00700000) >> 20;
+    if(2 == sd_security){
+        LOG_I("\r\n## SDSC card ##");
+    }else if(3 == sd_security){
+        LOG_I("\r\n## SDHC card ##");
+    }else if(4 == sd_security){
+        LOG_I("\r\n## SDXC card ##");
+    }
+
+    block_count = (sd.sd_cardinfo.card_csd.c_size + 1)*1024;
+    block_size = 512;
+    LOG_I("\r\n## Device size is %dKB ##", sd_card_capacity_get());
+    LOG_D("\r\n## Block size is %dB - %dB ##", block_size, sd.sd_cardinfo.card_blocksize);
+    LOG_D("\r\n## Block count is %d ##", block_count);
+
+    if(sd.sd_cardinfo.card_csd.read_bl_partial){
+        LOG_D("\r\n## Partial blocks for read allowed ##" );
+    }
+    if(sd.sd_cardinfo.card_csd.write_bl_partial){
+        LOG_D("\r\n## Partial blocks for write allowed ##" );
+    }
+    temp_ccc = sd.sd_cardinfo.card_csd.ccc;
+    LOG_D("\r\n## CardCommandClasses is: %x ##", temp_ccc);
+    if((SD_CCC_BLOCK_READ & temp_ccc) && (SD_CCC_BLOCK_WRITE & temp_ccc)){
+        LOG_D("\r\n## Block operation supported ##");
+    }
+    if(SD_CCC_ERASE & temp_ccc){
+        LOG_D("\r\n## Erase supported ##");
+    }
+    if(SD_CCC_WRITE_PROTECTION & temp_ccc){
+        LOG_D("\r\n## Write protection supported ##");
+    }
+    if(SD_CCC_LOCK_CARD & temp_ccc){
+        LOG_D("\r\n## Lock unlock supported ##");
+    }
+    if(SD_CCC_APPLICATION_SPECIFIC & temp_ccc){
+        LOG_D("\r\n## Application specific supported ##");
+    }
+    if(SD_CCC_IO_MODE & temp_ccc){
+        LOG_D("\r\n## I/O mode supported ##");
+    }
+    if(SD_CCC_SWITCH & temp_ccc){
+        LOG_D("\r\n## Switch function supported ##");
+    }
+}
+
+void SDIO_IRQHandler(void)
+{
+    sd_error_enum status;
+
+    rt_interrupt_enter();
+
+    status = sd_interrupts_process();
+    if (SD_OK != status) {
+        LOG_D("irq:%d", status);
+    }
+
+    rt_interrupt_leave();
+}
+
+/*!
+    \brief      initialize the SD card and make it in standby state
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_init(void)
+{
+    sd_error_enum status = SD_OK;
+
+    /* configure the RCU and GPIO, deinitialize the SDIO */
+    rcu_config();
+    gpio_config();
+    sdio_deinit();
+
+    /* configure the clock and work voltage */
+    status = sd_power_on();
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* initialize the card and get CID and CSD of the card */
+    status = sd_card_init();
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* configure the SDIO peripheral */
+    sdio_clock_config(SDIO_SDIOCLKEDGE_RISING, SDIO_CLOCKBYPASS_DISABLE, SDIO_CLOCKPWRSAVE_DISABLE, SD_CLK_DIV_TRANS);
+    sdio_bus_mode_set(SDIO_BUSMODE_1BIT);
+    sdio_hardware_clock_enable();//sdio_hardware_clock_disable();
+
+    return status;
+}
+
+/*!
+    \brief      initialize the card and get CID and CSD of the card
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_card_init(void)
+{
+    sd_error_enum status = SD_OK;
+    uint16_t temp_rca = 0x01;
+
+    if(SDIO_POWER_OFF == sdio_power_state_get()){
+        status = SD_OPERATION_IMPROPER;
+        return status;
+    }
+
+    /* the card is not I/O only card */
+    if(SDIO_SECURE_DIGITAL_IO_CARD != card_opration.cardtype){
+        /* send CMD2(SD_CMD_ALL_SEND_CID) to get the CID numbers */
+        sdio_command_response_config(SD_CMD_ALL_SEND_CID, (uint32_t)0x0, SDIO_RESPONSETYPE_LONG);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r2_error_check();
+        if(SD_OK != status){
+            return status;
+        }
+
+        /* store the CID numbers */
+        card_opration.sd_cid[0] = sdio_response_get(SDIO_RESPONSE0);
+        card_opration.sd_cid[1] = sdio_response_get(SDIO_RESPONSE1);
+        card_opration.sd_cid[2] = sdio_response_get(SDIO_RESPONSE2);
+        card_opration.sd_cid[3] = sdio_response_get(SDIO_RESPONSE3);
+    }
+
+    /* the card is SD memory card or the I/O card has the memory portion */
+    if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == card_opration.cardtype) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == card_opration.cardtype) ||
+        (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype) || (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == card_opration.cardtype)){
+        /* send CMD3(SEND_RELATIVE_ADDR) to ask the card to publish a new relative address (RCA) */
+        sdio_command_response_config(SD_CMD_SEND_RELATIVE_ADDR, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r6_error_check(SD_CMD_SEND_RELATIVE_ADDR, &temp_rca);
+        if(SD_OK != status){
+            return status;
+        }
+    }
+
+    if(SDIO_SECURE_DIGITAL_IO_CARD != card_opration.cardtype){
+        /* the card is not I/O only card */
+        card_opration.sd_rca = temp_rca;
+
+        /* send CMD9(SEND_CSD) to get the addressed card's card-specific data (CSD) */
+        sdio_command_response_config(SD_CMD_SEND_CSD, (uint32_t)(temp_rca << SD_RCA_SHIFT), SDIO_RESPONSETYPE_LONG);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r2_error_check();
+        if(SD_OK != status){
+            return status;
+        }
+
+        /* store the card-specific data (CSD) */
+        card_opration.sd_csd[0] = sdio_response_get(SDIO_RESPONSE0);
+        card_opration.sd_csd[1] = sdio_response_get(SDIO_RESPONSE1);
+        card_opration.sd_csd[2] = sdio_response_get(SDIO_RESPONSE2);
+        card_opration.sd_csd[3] = sdio_response_get(SDIO_RESPONSE3);
+    }
+    return status;
+}
+
+/*!
+    \brief      configure the clock and the work voltage, and get the card type
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_power_on(void)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t sdcardtype = SD_STD_CAPACITY, response = 0, count = 0;
+    uint8_t busyflag = 0;
+
+    /* configure the SDIO peripheral */
+    sdio_clock_config(SDIO_SDIOCLKEDGE_RISING, SDIO_CLOCKBYPASS_DISABLE, SDIO_CLOCKPWRSAVE_DISABLE, SD_CLK_DIV_INIT);
+    sdio_bus_mode_set(SDIO_BUSMODE_1BIT);
+    sdio_hardware_clock_enable();//sdio_hardware_clock_disable();
+    sdio_power_state_set(SDIO_POWER_ON);
+    /* enable SDIO_CLK clock output */
+    sdio_clock_enable();
+
+    /* send CMD0(GO_IDLE_STATE) to reset the card */
+    sdio_command_response_config(SD_CMD_GO_IDLE_STATE, (uint32_t)0x0, SDIO_RESPONSETYPE_NO);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    /* enable the CSM */
+    sdio_csm_enable();
+
+    /* check if command sent error occurs */
+    status = cmdsent_error_check();
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* send CMD8(SEND_IF_COND) to get SD memory card interface condition */
+    sdio_command_response_config(SD_CMD_SEND_IF_COND, SD_CHECK_PATTERN, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+
+    if(SD_OK == r7_error_check()){
+        /* SD Card 2.0 */
+        card_opration.cardtype = SDIO_STD_CAPACITY_SD_CARD_V2_0;
+        sdcardtype = SD_HIGH_CAPACITY;
+    }
+
+    /* send CMD55(APP_CMD) to indicate next command is application specific command */
+    sdio_command_response_config(SD_CMD_APP_CMD, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+
+    if(SD_OK == r1_error_check(SD_CMD_APP_CMD)){
+        /* SD memory card */
+        while((!busyflag) && (count < SD_MAX_VOLT_VALIDATION)){
+            /* send CMD55(APP_CMD) to indicate next command is application specific command */
+            sdio_command_response_config(SD_CMD_APP_CMD, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+            sdio_wait_type_set(SDIO_WAITTYPE_NO);
+            sdio_csm_enable();
+            /* check if some error occurs */
+            status = r1_error_check(SD_CMD_APP_CMD);
+            if(SD_OK != status){
+                return status;
+            }
+
+            /* send ACMD41(SD_SEND_OP_COND) to get host capacity support information (HCS) and OCR content */
+            sdio_command_response_config(SD_APPCMD_SD_SEND_OP_COND, (SD_VOLTAGE_WINDOW | sdcardtype), SDIO_RESPONSETYPE_SHORT);
+            sdio_wait_type_set(SDIO_WAITTYPE_NO);
+            sdio_csm_enable();
+            /* check if some error occurs */
+            status = r3_error_check();
+            if(SD_OK != status){
+                return status;
+            }
+            /* get the response and check card power up status bit(busy) */
+            response = sdio_response_get(SDIO_RESPONSE0);
+            busyflag = (uint8_t)((response >> 31)&(uint32_t)0x01);
+            ++count;
+        }
+        if(count >= SD_MAX_VOLT_VALIDATION){
+            status = SD_VOLTRANGE_INVALID;
+            return status;
+        }
+        if(response &= SD_HIGH_CAPACITY){
+            /* SDHC card */
+            card_opration.cardtype = SDIO_HIGH_CAPACITY_SD_CARD;
+        }
+    }
+    return status;
+}
+
+/*!
+    \brief      close the power of SDIO
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_power_off(void)
+{
+    sd_error_enum status = SD_OK;
+    sdio_power_state_set(SDIO_POWER_OFF);
+    return status;
+}
+
+/*!
+    \brief      configure the bus mode
+    \param[in]  busmode: the bus mode
+      \arg        SDIO_BUSMODE_1BIT: 1-bit SDIO card bus mode
+      \arg        SDIO_BUSMODE_4BIT: 4-bit SDIO card bus mode
+      \arg        SDIO_BUSMODE_8BIT: 8-bit SDIO card bus mode (MMC only)
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_bus_mode_config(uint32_t busmode)
+{
+    sd_error_enum status = SD_OK;
+    if(SDIO_MULTIMEDIA_CARD == card_opration.cardtype){
+        /* MMC card doesn't support this function */
+        status = SD_FUNCTION_UNSUPPORTED;
+        return status;
+    }else if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == card_opration.cardtype) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == card_opration.cardtype) ||
+             (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)){
+        if(SDIO_BUSMODE_8BIT == busmode){
+            /* 8 bit bus mode doesn't support */
+            status = SD_FUNCTION_UNSUPPORTED;
+            return status;
+        }else if(SDIO_BUSMODE_4BIT == busmode){
+            /* configure SD bus width and the SDIO */
+            status = sd_bus_width_config(SD_BUS_WIDTH_4BIT);
+            if(SD_OK == status){
+                sdio_clock_config(SDIO_SDIOCLKEDGE_RISING, SDIO_CLOCKBYPASS_DISABLE,
+                                    SDIO_CLOCKPWRSAVE_DISABLE, SD_CLK_DIV_TRANS);
+                sdio_bus_mode_set(busmode);
+                sdio_hardware_clock_enable();//sdio_hardware_clock_disable();
+            }
+        }else if(SDIO_BUSMODE_1BIT == busmode){
+            /* configure SD bus width and the SDIO */
+            status = sd_bus_width_config(SD_BUS_WIDTH_1BIT);
+            if(SD_OK == status){
+                sdio_clock_config(SDIO_SDIOCLKEDGE_RISING, SDIO_CLOCKBYPASS_DISABLE,
+                                    SDIO_CLOCKPWRSAVE_DISABLE, SD_CLK_DIV_TRANS);
+                sdio_bus_mode_set(busmode);
+                sdio_hardware_clock_enable();//sdio_hardware_clock_disable();
+            }
+        }else{
+            status = SD_PARAMETER_INVALID;
+        }
+    }
+    return status;
+}
+
+/*!
+    \brief      configure the mode of transmission
+    \param[in]  txmode: transfer mode
+      \arg        SD_DMA_MODE: DMA mode
+      \arg        SD_POLLING_MODE: polling mode
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_transfer_mode_config(uint32_t txmode)
+{
+    sd_error_enum status = SD_OK;
+    /* set the transfer mode */
+    if((SD_DMA_MODE == txmode) || (SD_POLLING_MODE == txmode)){
+        card_opration.transmode = txmode;
+    }else{
+        status = SD_PARAMETER_INVALID;
+    }
+    return status;
+}
+
+/*!
+    \brief      read a block data into a buffer from the specified address of a card
+    \param[out] preadbuffer: a pointer that store a block read data
+    \param[in]  readaddr: the read data address
+    \param[in]  blocksize: the data block size
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_block_read(uint32_t *preadbuffer, uint32_t readaddr, uint16_t blocksize)
+{
+    /* initialize the variables */
+    sd_error_enum status = SD_OK;
+    uint32_t count = 0, align = 0, datablksize = SDIO_DATABLOCKSIZE_1BYTE, *ptempbuff = preadbuffer;
+    __IO uint32_t timeout = 0;
+
+    if(NULL == preadbuffer){
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    card_opration.transerror = SD_OK;
+    card_opration.transend = 0;
+    card_opration.totalnumber_bytes = 0;
+    /* clear all DSM configuration */
+    sdio_data_config(0, 0, SDIO_DATABLOCKSIZE_1BYTE);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOCARD, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_disable();
+    sdio_dma_disable();
+
+    /* check whether the card is locked */
+    if(sdio_response_get(SDIO_RESPONSE0) & SD_CARDSTATE_LOCKED){
+        status = SD_LOCK_UNLOCK_FAILED;
+        return status;
+    }
+
+    /* blocksize is fixed in 512B for SDHC card */
+    if (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)
+    {
+        blocksize = 512;
+        readaddr /= 512;
+    }
+
+    align = blocksize & (blocksize - 1);
+    if((blocksize > 0) && (blocksize <= 2048) && (0 == align)){
+        datablksize = sd_datablocksize_get(blocksize);
+        /* send CMD16(SET_BLOCKLEN) to set the block length */
+        sdio_command_response_config(SD_CMD_SET_BLOCKLEN, (uint32_t)blocksize, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_SET_BLOCKLEN);
+        if(SD_OK != status){
+            return status;
+        }
+    }else{
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    card_opration.stopcondition = 0;
+    card_opration.totalnumber_bytes = blocksize;
+
+    /* configure SDIO data transmisson */
+    sdio_data_config(SD_DATATIMEOUT, card_opration.totalnumber_bytes, datablksize);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOSDIO, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_enable();
+
+    /* send CMD17(READ_SINGLE_BLOCK) to read a block */
+    sdio_command_response_config(SD_CMD_READ_SINGLE_BLOCK, (uint32_t)readaddr, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_READ_SINGLE_BLOCK);
+    if(SD_OK != status){
+        return status;
+    }
+
+    if(SD_POLLING_MODE == card_opration.transmode){
+        /* polling mode */
+        while(!sdio_flag_get(SDIO_FLAG_DTCRCERR | SDIO_FLAG_DTTMOUT | SDIO_FLAG_RXORE | SDIO_FLAG_DTBLKEND | SDIO_FLAG_STBITE)){
+            if(RESET != sdio_flag_get(SDIO_FLAG_RFH)){
+                /* at least 8 words can be read in the FIFO */
+                for(count = 0; count < SD_FIFOHALF_WORDS; count++){
+                    *(ptempbuff + count) = sdio_data_read();
+                }
+                ptempbuff += SD_FIFOHALF_WORDS;
+            }
+        }
+
+        /* whether some error occurs and return it */
+        if(RESET != sdio_flag_get(SDIO_FLAG_DTCRCERR)){
+            status = SD_DATA_CRC_ERROR;
+            sdio_flag_clear(SDIO_FLAG_DTCRCERR);
+            return status;
+        }else if(RESET != sdio_flag_get(SDIO_FLAG_DTTMOUT)){
+            status = SD_DATA_TIMEOUT;
+            sdio_flag_clear(SDIO_FLAG_DTTMOUT);
+            return status;
+        }else if(RESET != sdio_flag_get(SDIO_FLAG_RXORE)){
+            status = SD_RX_OVERRUN_ERROR;
+            sdio_flag_clear(SDIO_FLAG_RXORE);
+            return status;
+        }else if(RESET != sdio_flag_get(SDIO_FLAG_STBITE)){
+            status = SD_START_BIT_ERROR;
+            sdio_flag_clear(SDIO_FLAG_STBITE);
+            return status;
+        }
+        while(RESET != sdio_flag_get(SDIO_FLAG_RXDTVAL)){
+            *ptempbuff = sdio_data_read();
+            ++ptempbuff;
+        }
+        /* clear the SDIO_INTC flags */
+        sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    }else if(SD_DMA_MODE == card_opration.transmode){
+        /* DMA mode */
+        /* enable the SDIO corresponding interrupts and DMA function */
+        sdio_interrupt_enable(SDIO_INT_CCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_RXORE | SDIO_INT_DTEND | SDIO_INT_STBITE);
+        sdio_dma_enable();
+        dma_receive_config(preadbuffer, blocksize);
+#if SDIO_DMA_USE_IPC
+        sdio_dma_irq_config();
+        if (RT_EOK != rt_sem_take(&sd.sem, 100)) {
+            return SD_ERROR;
+        }
+#else
+        timeout = 400000;
+        while((RESET == dma_flag_get(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_FTF)) && (timeout > 0)){
+            timeout--;
+            if(0 == timeout){
+                return SD_ERROR;
+            }
+        }
+#endif
+    }else{
+        status = SD_PARAMETER_INVALID;
+    }
+    return status;
+}
+
+/*!
+    \brief      read multiple blocks data into a buffer from the specified address of a card
+    \param[out] preadbuffer: a pointer that store multiple blocks read data
+    \param[in]  readaddr: the read data address
+    \param[in]  blocksize: the data block size
+    \param[in]  blocksnumber: number of blocks that will be read
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_multiblocks_read(uint32_t *preadbuffer, uint32_t readaddr, uint16_t blocksize, uint32_t blocksnumber)
+{
+    /* initialize the variables */
+    sd_error_enum status = SD_OK;
+    uint32_t count = 0, align = 0, datablksize = SDIO_DATABLOCKSIZE_1BYTE, *ptempbuff = preadbuffer;
+    __IO uint32_t timeout = 0;
+
+    if(NULL == preadbuffer){
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    card_opration.transerror = SD_OK;
+    card_opration.transend = 0;
+    card_opration.totalnumber_bytes = 0;
+    /* clear all DSM configuration */
+    sdio_data_config(0, 0, SDIO_DATABLOCKSIZE_1BYTE);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOCARD, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_disable();
+    sdio_dma_disable();
+
+    /* check whether the card is locked */
+    if(sdio_response_get(SDIO_RESPONSE0) & SD_CARDSTATE_LOCKED){
+        status = SD_LOCK_UNLOCK_FAILED;
+        return status;
+    }
+
+    /* blocksize is fixed in 512B for SDHC card */
+    if (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)
+    {
+        blocksize = 512;
+        readaddr /= 512;
+    }
+
+    align = blocksize & (blocksize - 1);
+    if((blocksize > 0) && (blocksize <= 2048) && (0 == align)){
+        datablksize = sd_datablocksize_get(blocksize);
+        /* send CMD16(SET_BLOCKLEN) to set the block length */
+        sdio_command_response_config(SD_CMD_SET_BLOCKLEN, (uint32_t)blocksize, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_SET_BLOCKLEN);
+        if(SD_OK != status){
+            return status;
+        }
+    }else{
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    if(blocksnumber > 1){
+        if(blocksnumber * blocksize > SD_MAX_DATA_LENGTH){
+            /* exceeds the maximum length */
+            status = SD_PARAMETER_INVALID;
+            return status;
+        }
+
+        card_opration.stopcondition = 1;
+        card_opration.totalnumber_bytes = blocksnumber * blocksize;
+
+        /* configure the SDIO data transmisson */
+        sdio_data_config(SD_DATATIMEOUT, card_opration.totalnumber_bytes, datablksize);
+        sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOSDIO, SDIO_TRANSMODE_BLOCK);
+        sdio_dsm_enable();
+
+        /* send CMD18(READ_MULTIPLE_BLOCK) to read multiple blocks */
+        sdio_command_response_config(SD_CMD_READ_MULTIPLE_BLOCK, readaddr, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_READ_MULTIPLE_BLOCK);
+        if(SD_OK != status){
+            return status;
+        }
+
+        if(SD_POLLING_MODE == card_opration.transmode){
+            /* polling mode */
+            while(!sdio_flag_get(SDIO_FLAG_DTCRCERR | SDIO_FLAG_DTTMOUT | SDIO_FLAG_RXORE | SDIO_FLAG_DTEND | SDIO_FLAG_STBITE)){
+                if(RESET != sdio_flag_get(SDIO_FLAG_RFH)){
+                    /* at least 8 words can be read in the FIFO */
+                    for(count = 0; count < SD_FIFOHALF_WORDS; count++){
+                        *(ptempbuff + count) = sdio_data_read();
+                    }
+                    ptempbuff += SD_FIFOHALF_WORDS;
+                }
+            }
+
+            /* whether some error occurs and return it */
+            if(RESET != sdio_flag_get(SDIO_FLAG_DTCRCERR)){
+                status = SD_DATA_CRC_ERROR;
+                sdio_flag_clear(SDIO_FLAG_DTCRCERR);
+                return status;
+            }else if(RESET != sdio_flag_get(SDIO_FLAG_DTTMOUT)){
+                status = SD_DATA_TIMEOUT;
+                sdio_flag_clear(SDIO_FLAG_DTTMOUT);
+                return status;
+            }else if(RESET != sdio_flag_get(SDIO_FLAG_RXORE)){
+                status = SD_RX_OVERRUN_ERROR;
+                sdio_flag_clear(SDIO_FLAG_RXORE);
+                return status;
+            }else if(RESET != sdio_flag_get(SDIO_FLAG_STBITE)){
+                status = SD_START_BIT_ERROR;
+                sdio_flag_clear(SDIO_FLAG_STBITE);
+                return status;
+            }
+            while(RESET != sdio_flag_get(SDIO_FLAG_RXDTVAL)){
+                *ptempbuff = sdio_data_read();
+                ++ptempbuff;
+            }
+
+            if(RESET != sdio_flag_get(SDIO_FLAG_DTEND)){
+                if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == card_opration.cardtype) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == card_opration.cardtype) ||
+                    (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)){
+                    /* send CMD12(STOP_TRANSMISSION) to stop transmission */
+                    sdio_command_response_config(SD_CMD_STOP_TRANSMISSION, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+                    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+                    sdio_csm_enable();
+                    /* check if some error occurs */
+                    status = r1_error_check(SD_CMD_STOP_TRANSMISSION);
+                    if(SD_OK != status){
+                        return status;
+                    }
+                }
+            }
+            sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+        }else if(SD_DMA_MODE == card_opration.transmode){
+            /* DMA mode */
+            /* enable the SDIO corresponding interrupts and DMA function */
+            sdio_interrupt_enable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_RXORE | SDIO_INT_DTEND | SDIO_INT_STBITE);
+            sdio_dma_enable();
+            dma_receive_config(preadbuffer, card_opration.totalnumber_bytes);
+#if SDIO_DMA_USE_IPC
+            sdio_dma_irq_config();
+            if (RT_EOK != rt_sem_take(&sd.sem, 100)) {
+                return SD_ERROR;
+            }
+#else
+            timeout = 400000;
+            while((RESET == dma_flag_get(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_FTF)) && (timeout > 0)){
+                timeout--;
+                if(0 == timeout){
+                    return SD_ERROR;
+                }
+            }
+#endif
+            while((0 == card_opration.transend) && (SD_OK == card_opration.transerror)){
+            }
+            if(SD_OK != card_opration.transerror){
+                return card_opration.transerror;
+            }
+        }else{
+            status = SD_PARAMETER_INVALID;
+        }
+    }
+    return status;
+}
+
+/*!
+    \brief      write a block data to the specified address of a card
+    \param[in]  pwritebuffer: a pointer that store a block data to be transferred
+    \param[in]  writeaddr: the read data address
+    \param[in]  blocksize: the data block size
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_block_write(uint32_t *pwritebuffer, uint32_t writeaddr, uint16_t blocksize)
+{
+    /* initialize the variables */
+    sd_error_enum status = SD_OK;
+    uint8_t cardstate = 0;
+    uint32_t count = 0, align = 0, datablksize = SDIO_DATABLOCKSIZE_1BYTE, *ptempbuff = pwritebuffer;
+    uint32_t transbytes = 0, restwords = 0, response = 0;
+    __IO uint32_t timeout = 0;
+
+    if(NULL == pwritebuffer){
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    card_opration.transerror = SD_OK;
+    card_opration.transend = 0;
+    card_opration.totalnumber_bytes = 0;
+    /* clear all DSM configuration */
+    sdio_data_config(0, 0, SDIO_DATABLOCKSIZE_1BYTE);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOCARD, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_disable();
+    sdio_dma_disable();
+
+    /* check whether the card is locked */
+    if(sdio_response_get(SDIO_RESPONSE0) & SD_CARDSTATE_LOCKED){
+        status = SD_LOCK_UNLOCK_FAILED;
+        return status;
+    }
+
+    /* blocksize is fixed in 512B for SDHC card */
+    if (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)
+    {
+        blocksize = 512;
+        writeaddr /= 512;
+    }
+
+    align = blocksize & (blocksize - 1);
+    if((blocksize > 0) && (blocksize <= 2048) && (0 == align)){
+        datablksize = sd_datablocksize_get(blocksize);
+        /* send CMD16(SET_BLOCKLEN) to set the block length */
+        sdio_command_response_config(SD_CMD_SET_BLOCKLEN, (uint32_t)blocksize, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_SET_BLOCKLEN);
+        if(SD_OK != status){
+            return status;
+        }
+    }else{
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    /* send CMD13(SEND_STATUS), addressed card sends its status registers */
+    sdio_command_response_config(SD_CMD_SEND_STATUS, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_SEND_STATUS);
+    if(SD_OK != status){
+        return status;
+    }
+
+    response = sdio_response_get(SDIO_RESPONSE0);
+    timeout = 400000;
+
+    while((0 == (response & SD_R1_READY_FOR_DATA)) && (timeout > 0)){
+        /* continue to send CMD13 to polling the state of card until buffer empty or timeout */
+        --timeout;
+        /* send CMD13(SEND_STATUS), addressed card sends its status registers */
+        sdio_command_response_config(SD_CMD_SEND_STATUS, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_SEND_STATUS);
+        if(SD_OK != status){
+            return status;
+        }
+        response = sdio_response_get(SDIO_RESPONSE0);
+    }
+    if(0 == timeout){
+        return SD_ERROR;
+    }
+
+    /* send CMD24(WRITE_BLOCK) to write a block */
+    sdio_command_response_config(SD_CMD_WRITE_BLOCK, writeaddr, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_WRITE_BLOCK);
+    if(SD_OK != status){
+        return status;
+    }
+
+    card_opration.stopcondition = 0;
+    card_opration.totalnumber_bytes = blocksize;
+
+    /* configure the SDIO data transmisson */
+    sdio_data_config(SD_DATATIMEOUT, card_opration.totalnumber_bytes, datablksize);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOCARD, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_enable();
+
+    if(SD_POLLING_MODE == card_opration.transmode){
+        /* polling mode */
+        while(!sdio_flag_get(SDIO_FLAG_DTCRCERR | SDIO_FLAG_DTTMOUT | SDIO_FLAG_TXURE | SDIO_FLAG_DTBLKEND | SDIO_FLAG_STBITE)){
+            if(RESET != sdio_flag_get(SDIO_FLAG_TFH)){
+                /* at least 8 words can be written into the FIFO */
+                if((card_opration.totalnumber_bytes - transbytes) < SD_FIFOHALF_BYTES){
+                    restwords = (card_opration.totalnumber_bytes - transbytes)/4 + (((card_opration.totalnumber_bytes - transbytes)%4 == 0) ? 0 : 1);
+                    for(count = 0; count < restwords; count++){
+                        sdio_data_write(*ptempbuff);
+                        ++ptempbuff;
+                        transbytes += 4;
+                    }
+                }else{
+                    for(count = 0; count < SD_FIFOHALF_WORDS; count++){
+                        sdio_data_write(*(ptempbuff + count));
+                    }
+                    /* 8 words(32 bytes) has been transferred */
+                    ptempbuff += SD_FIFOHALF_WORDS;
+                    transbytes += SD_FIFOHALF_BYTES;
+                }
+            }
+        }
+
+        /* whether some error occurs and return it */
+        if(RESET != sdio_flag_get(SDIO_FLAG_DTCRCERR)){
+            status = SD_DATA_CRC_ERROR;
+            sdio_flag_clear(SDIO_FLAG_DTCRCERR);
+            return status;
+        }else if(RESET != sdio_flag_get(SDIO_FLAG_DTTMOUT)){
+            status = SD_DATA_TIMEOUT;
+            sdio_flag_clear(SDIO_FLAG_DTTMOUT);
+            return status;
+        }else if(RESET != sdio_flag_get(SDIO_FLAG_TXURE)){
+            status = SD_TX_UNDERRUN_ERROR;
+            sdio_flag_clear(SDIO_FLAG_TXURE);
+            return status;
+        }else if(RESET != sdio_flag_get(SDIO_FLAG_STBITE)){
+            status = SD_START_BIT_ERROR;
+            sdio_flag_clear(SDIO_FLAG_STBITE);
+            return status;
+        }
+    }else if(SD_DMA_MODE == card_opration.transmode){
+        /* DMA mode */
+        /* enable the SDIO corresponding interrupts and DMA */
+        sdio_interrupt_enable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_TXURE | SDIO_INT_DTEND | SDIO_INT_STBITE);
+        dma_transfer_config(pwritebuffer, blocksize);
+        sdio_dma_enable();
+#if SDIO_DMA_USE_IPC
+        sdio_dma_irq_config();
+        if (RT_EOK != rt_sem_take(&sd.sem, 100)) {
+            return SD_ERROR;
+        }
+#else
+        timeout = 400000;
+        while((RESET == dma_flag_get(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_FTF)) && (timeout > 0)){
+            timeout--;
+            if(0 == timeout){
+                return SD_ERROR;
+            }
+        }
+#endif
+        while ((0 == card_opration.transend) && (SD_OK == card_opration.transerror)){
+        }
+
+        if (SD_OK != card_opration.transerror){
+            return card_opration.transerror;
+        }
+    }else{
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    /* clear the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    /* get the card state and wait the card is out of programming and receiving state */
+    status = sd_card_state_get(&cardstate);
+    while((SD_OK == status) && ((SD_CARDSTATE_PROGRAMMING == cardstate) || (SD_CARDSTATE_RECEIVING == cardstate))){
+        status = sd_card_state_get(&cardstate);
+    }
+
+    return status;
+}
+
+/*!
+    \brief      write multiple blocks data to the specified address of a card
+    \param[in]  pwritebuffer: a pointer that store multiple blocks data to be transferred
+    \param[in]  writeaddr: the read data address
+    \param[in]  blocksize: the data block size
+    \param[in]  blocksnumber: number of blocks that will be written
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_multiblocks_write(uint32_t *pwritebuffer, uint32_t writeaddr, uint16_t blocksize, uint32_t blocksnumber)
+{
+    /* initialize the variables */
+    sd_error_enum status = SD_OK;
+    uint8_t cardstate = 0;
+    uint32_t count = 0, align = 0, datablksize = SDIO_DATABLOCKSIZE_1BYTE, *ptempbuff = pwritebuffer;
+    uint32_t transbytes = 0, restwords = 0;
+    __IO uint32_t timeout = 0;
+
+    if(NULL == pwritebuffer){
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    card_opration.transerror = SD_OK;
+    card_opration.transend = 0;
+    card_opration.totalnumber_bytes = 0;
+    /* clear all DSM configuration */
+    sdio_data_config(0, 0, SDIO_DATABLOCKSIZE_1BYTE);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOCARD, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_disable();
+    sdio_dma_disable();
+
+    /* check whether the card is locked */
+    if(sdio_response_get(SDIO_RESPONSE0) & SD_CARDSTATE_LOCKED){
+        status = SD_LOCK_UNLOCK_FAILED;
+        return status;
+    }
+
+    /* blocksize is fixed in 512B for SDHC card */
+    if (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)
+    {
+        blocksize = 512;
+        writeaddr /= 512;
+    }
+
+    align = blocksize & (blocksize - 1);
+    if((blocksize > 0) && (blocksize <= 2048) && (0 == align)){
+        datablksize = sd_datablocksize_get(blocksize);
+        /* send CMD16(SET_BLOCKLEN) to set the block length */
+        sdio_command_response_config(SD_CMD_SET_BLOCKLEN, (uint32_t)blocksize, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_SET_BLOCKLEN);
+        if(SD_OK != status){
+            LOG_D("#st:%d\n", status);
+            return status;
+        }
+    }else{
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    /* send CMD13(SEND_STATUS), addressed card sends its status registers */
+    sdio_command_response_config(SD_CMD_SEND_STATUS, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_SEND_STATUS);
+    if(SD_OK != status){
+        return status;
+    }
+
+    if(blocksnumber > 1){
+        if(blocksnumber * blocksize > SD_MAX_DATA_LENGTH){
+            status = SD_PARAMETER_INVALID;
+            return status;
+        }
+
+        if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == card_opration.cardtype) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == card_opration.cardtype) ||
+            (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)){
+            /* send CMD55(APP_CMD) to indicate next command is application specific command */
+            sdio_command_response_config(SD_CMD_APP_CMD, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+            sdio_wait_type_set(SDIO_WAITTYPE_NO);
+            sdio_csm_enable();
+            /* check if some error occurs */
+            status = r1_error_check(SD_CMD_APP_CMD);
+            if(SD_OK != status){
+                return status;
+            }
+
+            /* send ACMD23(SET_WR_BLK_ERASE_COUNT) to set the number of write blocks to be preerased before writing */
+            sdio_command_response_config(SD_APPCMD_SET_WR_BLK_ERASE_COUNT, blocksnumber, SDIO_RESPONSETYPE_SHORT);
+            sdio_wait_type_set(SDIO_WAITTYPE_NO);
+            sdio_csm_enable();
+            /* check if some error occurs */
+            status = r1_error_check(SD_APPCMD_SET_WR_BLK_ERASE_COUNT);
+            if(SD_OK != status){
+                return status;
+            }
+        }
+        /* send CMD25(WRITE_MULTIPLE_BLOCK) to continuously write blocks of data */
+        sdio_command_response_config(SD_CMD_WRITE_MULTIPLE_BLOCK, writeaddr, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_WRITE_MULTIPLE_BLOCK);
+        if(SD_OK != status){
+            return status;
+        }
+
+        card_opration.stopcondition = 1;
+        card_opration.totalnumber_bytes = blocksnumber * blocksize;
+
+        /* configure the SDIO data transmisson */
+        sdio_data_config(SD_DATATIMEOUT, card_opration.totalnumber_bytes, datablksize);
+        sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOCARD, SDIO_TRANSMODE_BLOCK);
+        sdio_dsm_enable();
+
+        if(SD_POLLING_MODE == card_opration.transmode){
+            /* polling mode */
+            while(!sdio_flag_get(SDIO_FLAG_DTCRCERR | SDIO_FLAG_DTTMOUT | SDIO_FLAG_TXURE | SDIO_FLAG_DTEND | SDIO_FLAG_STBITE)){
+                if(RESET != sdio_flag_get(SDIO_FLAG_TFH)){
+                    /* at least 8 words can be written into the FIFO */
+                    if(!((card_opration.totalnumber_bytes - transbytes) < SD_FIFOHALF_BYTES)){
+                        for(count = 0; count < SD_FIFOHALF_WORDS; count++){
+                            sdio_data_write(*(ptempbuff + count));
+                        }
+                        /* 8 words(32 bytes) has been transferred */
+                        ptempbuff += SD_FIFOHALF_WORDS;
+                        transbytes += SD_FIFOHALF_BYTES;
+                    }else{
+                        restwords = (card_opration.totalnumber_bytes - transbytes)/4 + (((card_opration.totalnumber_bytes - transbytes)%4 == 0) ? 0 : 1);
+                        for(count = 0; count < restwords; count++){
+                            sdio_data_write(*ptempbuff);
+                            ++ptempbuff;
+                            transbytes += 4;
+                        }
+                    }
+                }
+            }
+
+            /* whether some error occurs and return it */
+            if(RESET != sdio_flag_get(SDIO_FLAG_DTCRCERR)){
+                status = SD_DATA_CRC_ERROR;
+                sdio_flag_clear(SDIO_FLAG_DTCRCERR);
+                return status;
+            }else if(RESET != sdio_flag_get(SDIO_FLAG_DTTMOUT)){
+                status = SD_DATA_TIMEOUT;
+                sdio_flag_clear(SDIO_FLAG_DTTMOUT);
+                return status;
+            }else if(RESET != sdio_flag_get(SDIO_FLAG_TXURE)){
+                status = SD_TX_UNDERRUN_ERROR;
+                sdio_flag_clear(SDIO_FLAG_TXURE);
+                return status;
+            }else if(RESET != sdio_flag_get(SDIO_FLAG_STBITE)){
+                status = SD_START_BIT_ERROR;
+                sdio_flag_clear(SDIO_FLAG_STBITE);
+                return status;
+            }
+
+            if(RESET != sdio_flag_get(SDIO_FLAG_DTEND)){
+                if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == card_opration.cardtype) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == card_opration.cardtype) ||
+                    (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)){
+                    /* send CMD12(STOP_TRANSMISSION) to stop transmission */
+                    sdio_command_response_config(SD_CMD_STOP_TRANSMISSION, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+                    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+                    sdio_csm_enable();
+                    /* check if some error occurs */
+                    status = r1_error_check(SD_CMD_STOP_TRANSMISSION);
+                    if(SD_OK != status){
+                        return status;
+                    }
+                }
+            }
+            sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+        }else if(SD_DMA_MODE == card_opration.transmode){
+            /* DMA mode */
+            /* enable SDIO corresponding interrupts and DMA */
+            sdio_interrupt_enable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_TXURE | SDIO_INT_DTEND | SDIO_INT_STBITE);
+            sdio_dma_enable();
+            dma_transfer_config(pwritebuffer, card_opration.totalnumber_bytes);
+#if SDIO_DMA_USE_IPC
+            sdio_dma_irq_config();
+            if (RT_EOK != rt_sem_take(&sd.sem, 100)) {
+                return SD_ERROR;
+            }
+#else
+            timeout = 400000;
+            while((RESET == dma_flag_get(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_FTF) && (timeout > 0))){
+                timeout--;
+                if(0 == timeout){
+                    return SD_ERROR;
+                }
+            }
+#endif
+            while((0 == card_opration.transend) && (SD_OK == card_opration.transerror)){
+            }
+
+            if(SD_OK != card_opration.transerror){
+                return card_opration.transerror;
+            }
+        }else{
+            status = SD_PARAMETER_INVALID;
+            return status;
+        }
+    }
+
+    /* clear the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    /* get the card state and wait the card is out of programming and receiving state */
+    status = sd_card_state_get(&cardstate);
+    while((SD_OK == status) && ((SD_CARDSTATE_PROGRAMMING == cardstate) || (SD_CARDSTATE_RECEIVING == cardstate))){
+        status = sd_card_state_get(&cardstate);
+    }
+    return status;
+}
+
+/*!
+    \brief      erase a continuous area of a card
+    \param[in]  startaddr: the start address
+    \param[in]  endaddr: the end address
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_erase(uint32_t startaddr, uint32_t endaddr)
+{
+    /* initialize the variables */
+    sd_error_enum status = SD_OK;
+    uint32_t count = 0, clkdiv = 0;
+    __IO uint32_t delay = 0;
+    uint8_t cardstate = 0, tempbyte = 0;
+    uint16_t tempccc = 0;
+
+    /* get the card command classes from CSD */
+    tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_24_31BITS) >> 24);
+    tempccc = (uint16_t)((uint16_t)tempbyte << 4);
+    tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_16_23BITS) >> 16);
+    tempccc |= (uint16_t)((uint16_t)(tempbyte & 0xF0) >> 4);
+    if(0 == (tempccc & SD_CCC_ERASE)){
+        /* don't support the erase command */
+        status = SD_FUNCTION_UNSUPPORTED;
+        return status;
+    }
+    clkdiv = (SDIO_CLKCTL & SDIO_CLKCTL_DIV);
+    clkdiv += ((SDIO_CLKCTL & SDIO_CLKCTL_DIV8)>>31)*256;
+    clkdiv += 2;
+    delay = 168000 / clkdiv;
+
+    /* check whether the card is locked */
+    if (sdio_response_get(SDIO_RESPONSE0) & SD_CARDSTATE_LOCKED)
+    {
+        status = SD_LOCK_UNLOCK_FAILED;
+        return(status);
+    }
+
+    /* blocksize is fixed in 512B for SDHC card */
+    if (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)
+    {
+        startaddr /= 512;
+        endaddr /= 512;
+    }
+
+    if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == card_opration.cardtype) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == card_opration.cardtype) ||
+        (SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype)){
+        /* send CMD32(ERASE_WR_BLK_START) to set the address of the first write block to be erased */
+        sdio_command_response_config(SD_CMD_ERASE_WR_BLK_START, startaddr, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_ERASE_WR_BLK_START);
+        if(SD_OK != status){
+            return status;
+        }
+
+        /* send CMD33(ERASE_WR_BLK_END) to set the address of the last write block of the continuous range to be erased */
+        sdio_command_response_config(SD_CMD_ERASE_WR_BLK_END, endaddr, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_ERASE_WR_BLK_END);
+        if(SD_OK != status){
+            return status;
+        }
+    }
+
+    /* send CMD38(ERASE) to set the address of the first write block to be erased */
+    sdio_command_response_config(SD_CMD_ERASE, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_ERASE);
+    if(SD_OK != status){
+        return status;
+    }
+    /* loop until the counter is reach to the calculated time */
+    for(count = 0; count < delay; count++){
+    }
+    /* get the card state and wait the card is out of programming and receiving state */
+    status = sd_card_state_get(&cardstate);
+    while((SD_OK == status) && ((SD_CARDSTATE_PROGRAMMING == cardstate) || (SD_CARDSTATE_RECEIVING == cardstate))){
+        status = sd_card_state_get(&cardstate);
+    }
+    return status;
+}
+
+/*!
+    \brief      process all the interrupts which the corresponding flags are set
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_interrupts_process(void)
+{
+    card_opration.transerror = SD_OK;
+    if(RESET != sdio_interrupt_flag_get(SDIO_INT_DTEND)){
+        /* send CMD12 to stop data transfer in multipule blocks operation */
+        if(1 == card_opration.stopcondition){
+            card_opration.transerror = sd_transfer_stop();
+        }else{
+            card_opration.transerror = SD_OK;
+        }
+        sdio_interrupt_flag_clear(SDIO_INT_DTEND);
+        /* disable all the interrupts */
+        sdio_interrupt_disable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_DTEND | SDIO_INT_STBITE |
+                                SDIO_INT_TFH | SDIO_INT_RFH | SDIO_INT_TXURE | SDIO_INT_RXORE);
+        card_opration.transend = 1;
+        card_opration.number_bytes = 0;
+        return card_opration.transerror;
+    }
+
+    if(RESET != sdio_interrupt_flag_get(SDIO_INT_DTCRCERR)){
+        sdio_interrupt_flag_clear(SDIO_INT_DTCRCERR);
+        /* disable all the interrupts */
+        sdio_interrupt_disable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_DTEND | SDIO_INT_STBITE |
+                                SDIO_INT_TFH | SDIO_INT_RFH | SDIO_INT_TXURE | SDIO_INT_RXORE);
+        card_opration.number_bytes = 0;
+        card_opration.transerror = SD_DATA_CRC_ERROR;
+        return card_opration.transerror;
+    }
+
+    if(RESET != sdio_interrupt_flag_get(SDIO_INT_DTTMOUT)){
+        sdio_interrupt_flag_clear(SDIO_INT_DTTMOUT);
+        /* disable all the interrupts */
+        sdio_interrupt_disable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_DTEND | SDIO_INT_STBITE |
+                                SDIO_INT_TFH | SDIO_INT_RFH | SDIO_INT_TXURE | SDIO_INT_RXORE);
+        card_opration.number_bytes = 0;
+        card_opration.transerror = SD_DATA_TIMEOUT;
+        return card_opration.transerror;
+    }
+
+    if(RESET != sdio_interrupt_flag_get(SDIO_INT_STBITE)){
+        sdio_interrupt_flag_clear(SDIO_INT_STBITE);
+        /* disable all the interrupts */
+        sdio_interrupt_disable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_DTEND | SDIO_INT_STBITE |
+                                SDIO_INT_TFH | SDIO_INT_RFH | SDIO_INT_TXURE | SDIO_INT_RXORE);
+        card_opration.number_bytes = 0;
+        card_opration.transerror = SD_START_BIT_ERROR;
+        return card_opration.transerror;
+    }
+
+    if(RESET != sdio_interrupt_flag_get(SDIO_INT_TXURE)){
+        sdio_interrupt_flag_clear(SDIO_INT_TXURE);
+        /* disable all the interrupts */
+        sdio_interrupt_disable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_DTEND | SDIO_INT_STBITE |
+                                SDIO_INT_TFH | SDIO_INT_RFH | SDIO_INT_TXURE | SDIO_INT_RXORE);
+        card_opration.number_bytes = 0;
+        card_opration.transerror = SD_TX_UNDERRUN_ERROR;
+        return card_opration.transerror;
+    }
+
+    if(RESET != sdio_interrupt_flag_get(SDIO_INT_RXORE)){
+        sdio_interrupt_flag_clear(SDIO_INT_RXORE);
+        /* disable all the interrupts */
+        sdio_interrupt_disable(SDIO_INT_DTCRCERR | SDIO_INT_DTTMOUT | SDIO_INT_DTEND | SDIO_INT_STBITE |
+                                SDIO_INT_TFH | SDIO_INT_RFH | SDIO_INT_TXURE | SDIO_INT_RXORE);
+        card_opration.number_bytes = 0;
+        card_opration.transerror = SD_RX_OVERRUN_ERROR;
+        return card_opration.transerror;
+    }
+    return card_opration.transerror;
+}
+
+/*!
+    \brief      select or deselect a card
+    \param[in]  cardrca: the RCA of a card
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_card_select_deselect(uint16_t cardrca)
+{
+    sd_error_enum status = SD_OK;
+    /* send CMD7(SELECT/DESELECT_CARD) to select or deselect the card */
+    sdio_command_response_config(SD_CMD_SELECT_DESELECT_CARD, (uint32_t)(cardrca << SD_RCA_SHIFT), SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+
+    status = r1_error_check(SD_CMD_SELECT_DESELECT_CARD);
+    return status;
+}
+
+/*!
+    \brief      get the card status whose response format R1 contains a 32-bit field
+    \param[in]  none
+    \param[out] pcardstatus: a pointer that store card status
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_cardstatus_get(uint32_t *pcardstatus)
+{
+    sd_error_enum status = SD_OK;
+    if(NULL == pcardstatus){
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    /* send CMD13(SEND_STATUS), addressed card sends its status register */
+    sdio_command_response_config(SD_CMD_SEND_STATUS, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_SEND_STATUS);
+    if(SD_OK != status){
+        return status;
+    }
+
+    *pcardstatus = sdio_response_get(SDIO_RESPONSE0);
+    return status;
+}
+
+/*!
+    \brief      get the SD status, the size of the SD status is one data block of 512 bit
+    \param[in]  none
+    \param[out] psdstatus: a pointer that store SD card status
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_sdstatus_get(uint32_t *psdstatus)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t count = 0;
+
+    /* check whether the card is locked */
+    if (sdio_response_get(SDIO_RESPONSE0) & SD_CARDSTATE_LOCKED){
+        status = SD_LOCK_UNLOCK_FAILED;
+        return(status);
+    }
+
+    /* send CMD16(SET_BLOCKLEN) to set the block length */
+    sdio_command_response_config(SD_CMD_SET_BLOCKLEN, (uint32_t)64, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_SET_BLOCKLEN);
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* send CMD55(APP_CMD) to indicate next command is application specific command */
+    sdio_command_response_config(SD_CMD_APP_CMD, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_APP_CMD);
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* configure the SDIO data transmisson */
+    sdio_data_config(SD_DATATIMEOUT, (uint32_t)64, SDIO_DATABLOCKSIZE_64BYTES);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOSDIO, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_enable();
+
+    /* send ACMD13(SD_STATUS) to get the SD status */
+    sdio_command_response_config(SD_APPCMD_SD_STATUS, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_APPCMD_SD_STATUS);
+    if(SD_OK != status){
+        return status;
+    }
+
+    while(!sdio_flag_get(SDIO_FLAG_DTCRCERR | SDIO_FLAG_DTTMOUT | SDIO_FLAG_RXORE | SDIO_FLAG_DTBLKEND | SDIO_FLAG_STBITE)){
+        if(RESET != sdio_flag_get(SDIO_FLAG_RFH)){
+            for(count = 0; count < SD_FIFOHALF_WORDS; count++){
+                *(psdstatus + count) = sdio_data_read();
+            }
+            psdstatus += SD_FIFOHALF_WORDS;
+        }
+    }
+
+    /* whether some error occurs and return it */
+    if(RESET != sdio_flag_get(SDIO_FLAG_DTCRCERR)){
+        status = SD_DATA_CRC_ERROR;
+        sdio_flag_clear(SDIO_FLAG_DTCRCERR);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_DTTMOUT)){
+        status = SD_DATA_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_DTTMOUT);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_RXORE)){
+        status = SD_RX_OVERRUN_ERROR;
+        sdio_flag_clear(SDIO_FLAG_RXORE);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_STBITE)){
+        status = SD_START_BIT_ERROR;
+        sdio_flag_clear(SDIO_FLAG_STBITE);
+        return status;
+    }
+    while(RESET != sdio_flag_get(SDIO_FLAG_RXDTVAL)){
+        *psdstatus = sdio_data_read();
+        ++psdstatus;
+    }
+
+    /* clear the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    psdstatus -= 16;
+    for(count = 0; count < 16; count++){
+        psdstatus[count] = ((psdstatus[count] & SD_MASK_0_7BITS) << 24) |((psdstatus[count] & SD_MASK_8_15BITS) << 8) |
+                           ((psdstatus[count] & SD_MASK_16_23BITS) >> 8) |((psdstatus[count] & SD_MASK_24_31BITS) >> 24);
+    }
+    return status;
+}
+
+/*!
+    \brief      stop an ongoing data transfer
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_transfer_stop(void)
+{
+    sd_error_enum status = SD_OK;
+    /* send CMD12(STOP_TRANSMISSION) to stop transmission */
+    sdio_command_response_config(SD_CMD_STOP_TRANSMISSION, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_STOP_TRANSMISSION);
+    return status;
+}
+
+/*!
+    \brief      lock or unlock a card
+    \param[in]  lockstate: the lock state
+      \arg        SD_LOCK: lock the SD card
+      \arg        SD_UNLOCK: unlock the SD card
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_lock_unlock(uint8_t lockstate)
+{
+    sd_error_enum status = SD_OK;
+    uint8_t cardstate = 0, tempbyte = 0;
+    uint32_t pwd1 = 0, pwd2 = 0, response = 0, timeout = 0;
+    uint16_t tempccc = 0;
+
+    /* get the card command classes from CSD */
+    tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_24_31BITS) >> 24);
+    tempccc = (uint16_t)((uint16_t)tempbyte << 4);
+    tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_16_23BITS) >> 16);
+    tempccc |= (uint16_t)((uint16_t)(tempbyte & 0xF0) >> 4);
+
+    if(0 == (tempccc & SD_CCC_LOCK_CARD)){
+        /* don't support the lock command */
+        status = SD_FUNCTION_UNSUPPORTED;
+        return status;
+    }
+    /* password pattern */
+    pwd1 = (0x01020600|lockstate);
+    pwd2 = 0x03040506;
+
+    /* clear all DSM configuration */
+    sdio_data_config(0, 0, SDIO_DATABLOCKSIZE_1BYTE);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOCARD, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_disable();
+    sdio_dma_disable();
+
+    /* send CMD16(SET_BLOCKLEN) to set the block length */
+    sdio_command_response_config(SD_CMD_SET_BLOCKLEN, (uint32_t)8, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_SET_BLOCKLEN);
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* send CMD13(SEND_STATUS), addressed card sends its status register */
+    sdio_command_response_config(SD_CMD_SEND_STATUS, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_SEND_STATUS);
+    if(SD_OK != status){
+        return status;
+    }
+
+    response = sdio_response_get(SDIO_RESPONSE0);
+    timeout = 400000;
+    while((0 == (response & SD_R1_READY_FOR_DATA)) && (timeout > 0)){
+        /* continue to send CMD13 to polling the state of card until buffer empty or timeout */
+        --timeout;
+        /* send CMD13(SEND_STATUS), addressed card sends its status registers */
+        sdio_command_response_config(SD_CMD_SEND_STATUS, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+        sdio_wait_type_set(SDIO_WAITTYPE_NO);
+        sdio_csm_enable();
+        /* check if some error occurs */
+        status = r1_error_check(SD_CMD_SEND_STATUS);
+        if(SD_OK != status){
+            return status;
+        }
+        response = sdio_response_get(SDIO_RESPONSE0);
+    }
+    if(0 == timeout){
+        return SD_ERROR;
+    }
+
+    /* send CMD42(LOCK_UNLOCK) to set/reset the password or lock/unlock the card */
+    sdio_command_response_config(SD_CMD_LOCK_UNLOCK, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_LOCK_UNLOCK);
+    if(SD_OK != status){
+        return status;
+    }
+
+    response = sdio_response_get(SDIO_RESPONSE0);
+
+    /* configure the SDIO data transmisson */
+    sdio_data_config(SD_DATATIMEOUT, (uint32_t)8, SDIO_DATABLOCKSIZE_8BYTES);
+    sdio_data_transfer_config(SDIO_TRANSDIRECTION_TOCARD, SDIO_TRANSMODE_BLOCK);
+    sdio_dsm_enable();
+
+    /* write password pattern */
+    sdio_data_write(pwd1);
+    sdio_data_write(pwd2);
+
+    /* whether some error occurs and return it */
+    if(RESET != sdio_flag_get(SDIO_FLAG_DTCRCERR)){
+        status = SD_DATA_CRC_ERROR;
+        sdio_flag_clear(SDIO_FLAG_DTCRCERR);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_DTTMOUT)){
+        status = SD_DATA_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_DTTMOUT);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_TXURE)){
+        status = SD_TX_UNDERRUN_ERROR;
+        sdio_flag_clear(SDIO_FLAG_TXURE);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_STBITE)){
+        status = SD_START_BIT_ERROR;
+        sdio_flag_clear(SDIO_FLAG_STBITE);
+        return status;
+    }
+
+    /* clear the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    /* get the card state and wait the card is out of programming and receiving state */
+    status = sd_card_state_get(&cardstate);
+    while((SD_OK == status) && ((SD_CARDSTATE_PROGRAMMING == cardstate) || (SD_CARDSTATE_RECEIVING == cardstate))){
+        status = sd_card_state_get(&cardstate);
+    }
+    return status;
+}
+
+/*!
+    \brief      get the data transfer state
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+sd_transfer_state_enum sd_transfer_state_get(void)
+{
+    sd_transfer_state_enum transtate = SD_NO_TRANSFER;
+    if(RESET != sdio_flag_get(SDIO_FLAG_TXRUN | SDIO_FLAG_RXRUN)){
+        transtate = SD_TRANSFER_IN_PROGRESS;
+    }
+    return transtate;
+}
+
+/*!
+    \brief      get SD card capacity
+    \param[in]  none
+    \param[out] none
+    \retval     capacity of the card(KB)
+*/
+uint32_t sd_card_capacity_get(void)
+{
+    uint8_t tempbyte = 0, devicesize_mult = 0, readblklen = 0;
+    uint32_t capacity = 0, devicesize = 0;
+    if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == card_opration.cardtype) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == card_opration.cardtype)){
+        /* calculate the c_size(device size) */
+        tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_8_15BITS) >> 8);
+        devicesize |= (uint32_t)((uint32_t)(tempbyte & 0x03) << 10);
+        tempbyte = (uint8_t)(card_opration.sd_csd[1] & SD_MASK_0_7BITS);
+        devicesize |= (uint32_t)((uint32_t)tempbyte << 2);
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_24_31BITS) >> 24);
+        devicesize |= (uint32_t)((uint32_t)(tempbyte & 0xC0) >> 6);
+
+        /* calculate the c_size_mult(device size multiplier) */
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_16_23BITS) >> 16);
+        devicesize_mult = (tempbyte & 0x03) << 1;
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_8_15BITS) >> 8);
+        devicesize_mult |= (tempbyte & 0x80) >> 7;
+
+        /* calculate the read_bl_len */
+        tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_16_23BITS) >> 16);
+        readblklen = tempbyte & 0x0F;
+
+        /* capacity = BLOCKNR*BLOCK_LEN, BLOCKNR = (C_SIZE+1)*MULT, MULT = 2^(C_SIZE_MULT+2), BLOCK_LEN = 2^READ_BL_LEN */
+        capacity = (devicesize + 1)*(1 << (devicesize_mult + 2));
+        capacity *= (1 << readblklen);
+
+        /* change the unit of capacity to KByte */
+        capacity /= 1024;
+    }else if(SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype){
+        /* calculate the c_size */
+        tempbyte = (uint8_t)(card_opration.sd_csd[1] & SD_MASK_0_7BITS);
+        devicesize = (uint32_t)((uint32_t)(tempbyte & 0x3F) << 16);
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_24_31BITS) >> 24);
+        devicesize |= (uint32_t)((uint32_t)tempbyte << 8);
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_16_23BITS) >> 16);
+        devicesize |= (uint32_t)tempbyte;
+
+        /* capacity = (c_size+1)*512KByte */
+        capacity = (devicesize + 1)*512;
+    }
+    return capacity;
+}
+
+/*!
+    \brief      get the detailed information of the SD card based on received CID and CSD
+    \param[in]  none
+    \param[out] pcardinfo: a pointer that store the detailed card information
+    \retval     sd_error_enum
+*/
+sd_error_enum sd_card_information_get(sd_card_info_struct *pcardinfo)
+{
+    sd_error_enum status = SD_OK;
+    uint8_t tempbyte = 0;
+
+    if(NULL == pcardinfo){
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+
+    /* store the card type and RCA */
+    pcardinfo->card_type = card_opration.cardtype;
+    pcardinfo->card_rca = card_opration.sd_rca;
+
+    /* CID byte 0 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[0] & SD_MASK_24_31BITS) >> 24);
+    pcardinfo->card_cid.mid = tempbyte;
+
+    /* CID byte 1 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[0] & SD_MASK_16_23BITS) >> 16);
+    pcardinfo->card_cid.oid = (uint16_t)((uint16_t)tempbyte << 8);
+
+    /* CID byte 2 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[0] & SD_MASK_8_15BITS) >> 8);
+    pcardinfo->card_cid.oid |= (uint16_t)tempbyte;
+
+    /* CID byte 3 */
+    tempbyte = (uint8_t)(card_opration.sd_cid[0] & SD_MASK_0_7BITS);
+    pcardinfo->card_cid.pnm0 = (uint32_t)((uint32_t)tempbyte << 24);
+
+    /* CID byte 4 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[1] & SD_MASK_24_31BITS) >> 24);
+    pcardinfo->card_cid.pnm0 |= (uint32_t)((uint32_t)tempbyte << 16);
+
+    /* CID byte 5 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[1] & SD_MASK_16_23BITS) >> 16);
+    pcardinfo->card_cid.pnm0 |= (uint32_t)((uint32_t)tempbyte << 8);
+
+    /* CID byte 6 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[1] & SD_MASK_8_15BITS) >> 8);
+    pcardinfo->card_cid.pnm0 |= (uint32_t)(tempbyte);
+
+    /* CID byte 7 */
+    tempbyte = (uint8_t)(card_opration.sd_cid[1] & SD_MASK_0_7BITS);
+    pcardinfo->card_cid.pnm1 = tempbyte;
+
+    /* CID byte 8 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[2] & SD_MASK_24_31BITS) >> 24);
+    pcardinfo->card_cid.prv = tempbyte;
+
+    /* CID byte 9 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[2] & SD_MASK_16_23BITS) >> 16);
+    pcardinfo->card_cid.psn = (uint32_t)((uint32_t)tempbyte << 24);
+
+    /* CID byte 10 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[2] & SD_MASK_8_15BITS) >> 8);
+    pcardinfo->card_cid.psn |= (uint32_t)((uint32_t)tempbyte << 16);
+
+    /* CID byte 11 */
+    tempbyte = (uint8_t)(card_opration.sd_cid[2] & SD_MASK_0_7BITS);
+    pcardinfo->card_cid.psn |= (uint32_t)tempbyte;
+
+    /* CID byte 12 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[3] & SD_MASK_24_31BITS) >> 24);
+    pcardinfo->card_cid.psn |= (uint32_t)tempbyte;
+
+    /* CID byte 13 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[3] & SD_MASK_16_23BITS) >> 16);
+    pcardinfo->card_cid.mdt = (uint16_t)((uint16_t)(tempbyte & 0x0F) << 8);
+
+    /* CID byte 14 */
+    tempbyte = (uint8_t)((card_opration.sd_cid[3] & SD_MASK_8_15BITS) >> 8);
+    pcardinfo->card_cid.mdt |= (uint16_t)tempbyte;
+
+    /* CID byte 15 */
+    tempbyte = (uint8_t)(card_opration.sd_cid[3] & SD_MASK_0_7BITS);
+    pcardinfo->card_cid.cid_crc = (tempbyte & 0xFE) >> 1;
+
+    /* CSD byte 0 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[0] & SD_MASK_24_31BITS) >> 24);
+    pcardinfo->card_csd.csd_struct = (tempbyte & 0xC0) >> 6;
+
+    /* CSD byte 1 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[0] & SD_MASK_16_23BITS) >> 16);
+    pcardinfo->card_csd.taac = tempbyte;
+
+    /* CSD byte 2 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[0] & SD_MASK_8_15BITS) >> 8);
+    pcardinfo->card_csd.nsac = tempbyte;
+
+    /* CSD byte 3 */
+    tempbyte = (uint8_t)(card_opration.sd_csd[0] & SD_MASK_0_7BITS);
+    pcardinfo->card_csd.tran_speed = tempbyte;
+
+    /* CSD byte 4 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_24_31BITS) >> 24);
+    pcardinfo->card_csd.ccc = (uint16_t)((uint16_t)tempbyte << 4);
+
+    /* CSD byte 5 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_16_23BITS) >> 16);
+    pcardinfo->card_csd.ccc |= (uint16_t)((uint16_t)(tempbyte & 0xF0) >> 4);
+    pcardinfo->card_csd.read_bl_len = tempbyte & 0x0F;
+
+    /* CSD byte 6 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[1] & SD_MASK_8_15BITS) >> 8);
+    pcardinfo->card_csd.read_bl_partial = (tempbyte & 0x80) >> 7;
+    pcardinfo->card_csd.write_blk_misalign = (tempbyte & 0x40) >> 6;
+    pcardinfo->card_csd.read_blk_misalign = (tempbyte & 0x20) >> 5;
+    pcardinfo->card_csd.dsp_imp = (tempbyte & 0x10) >> 4;
+
+    if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == card_opration.cardtype) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == card_opration.cardtype)){
+        /* card is SDSC card, CSD version 1.0 */
+        pcardinfo->card_csd.c_size = (uint32_t)((uint32_t)(tempbyte & 0x03) << 10);
+
+        /* CSD byte 7 */
+        tempbyte = (uint8_t)(card_opration.sd_csd[1] & SD_MASK_0_7BITS);
+        pcardinfo->card_csd.c_size |= (uint32_t)((uint32_t)tempbyte << 2);
+
+        /* CSD byte 8 */
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_24_31BITS) >> 24);
+        pcardinfo->card_csd.c_size |= (uint32_t)((uint32_t)(tempbyte & 0xC0) >> 6);
+        pcardinfo->card_csd.vdd_r_curr_min = (tempbyte & 0x38) >> 3;
+        pcardinfo->card_csd.vdd_r_curr_max = tempbyte & 0x07;
+
+        /* CSD byte 9 */
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_16_23BITS) >> 16);
+        pcardinfo->card_csd.vdd_w_curr_min = (tempbyte & 0xE0) >> 5;
+        pcardinfo->card_csd.vdd_w_curr_max = (tempbyte & 0x1C) >> 2;
+        pcardinfo->card_csd.c_size_mult = (tempbyte & 0x03) << 1;
+
+        /* CSD byte 10 */
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_8_15BITS) >> 8);
+        pcardinfo->card_csd.c_size_mult |= (tempbyte & 0x80) >> 7;
+
+        /* calculate the card block size and capacity */
+        pcardinfo->card_blocksize = 1 << (pcardinfo->card_csd.read_bl_len);
+        pcardinfo->card_capacity = pcardinfo->card_csd.c_size + 1;
+        pcardinfo->card_capacity *= (1 << (pcardinfo->card_csd.c_size_mult + 2));
+        pcardinfo->card_capacity *= pcardinfo->card_blocksize;
+    }else if(SDIO_HIGH_CAPACITY_SD_CARD == card_opration.cardtype){
+        /* card is SDHC card, CSD version 2.0 */
+        /* CSD byte 7 */
+        tempbyte = (uint8_t)(card_opration.sd_csd[1] & SD_MASK_0_7BITS);
+        pcardinfo->card_csd.c_size = (uint32_t)((uint32_t)(tempbyte & 0x3F) << 16);
+
+        /* CSD byte 8 */
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_24_31BITS) >> 24);
+        pcardinfo->card_csd.c_size |= (uint32_t)((uint32_t)tempbyte << 8);
+
+        /* CSD byte 9 */
+        tempbyte = (uint8_t)((card_opration.sd_csd[2] & SD_MASK_16_23BITS) >> 16);
+        pcardinfo->card_csd.c_size |= (uint32_t)tempbyte;
+
+        /* calculate the card block size and capacity */
+        pcardinfo->card_blocksize = 512;
+        pcardinfo->card_capacity = (pcardinfo->card_csd.c_size + 1) * 512 *1024;
+    }
+
+    pcardinfo->card_csd.erase_blk_en = (tempbyte & 0x40) >> 6;
+    pcardinfo->card_csd.sector_size = (tempbyte & 0x3F) << 1;
+
+    /* CSD byte 11 */
+    tempbyte = (uint8_t)(card_opration.sd_csd[2] & SD_MASK_0_7BITS);
+    pcardinfo->card_csd.sector_size |= (tempbyte & 0x80) >> 7;
+    pcardinfo->card_csd.wp_grp_size = (tempbyte & 0x7F);
+
+    /* CSD byte 12 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[3] & SD_MASK_24_31BITS) >> 24);
+    pcardinfo->card_csd.wp_grp_enable = (tempbyte & 0x80) >> 7;
+    pcardinfo->card_csd.r2w_factor = (tempbyte & 0x1C) >> 2;
+    pcardinfo->card_csd.write_bl_len = (tempbyte & 0x03) << 2;
+
+    /* CSD byte 13 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[3] & SD_MASK_16_23BITS) >> 16);
+    pcardinfo->card_csd.write_bl_len |= (tempbyte & 0xC0) >> 6;
+    pcardinfo->card_csd.write_bl_partial = (tempbyte & 0x20) >> 5;
+
+    /* CSD byte 14 */
+    tempbyte = (uint8_t)((card_opration.sd_csd[3] & SD_MASK_8_15BITS) >> 8);
+    pcardinfo->card_csd.file_format_grp = (tempbyte & 0x80) >> 7;
+    pcardinfo->card_csd.copy_flag = (tempbyte & 0x40) >> 6;
+    pcardinfo->card_csd.perm_write_protect = (tempbyte & 0x20) >> 5;
+    pcardinfo->card_csd.tmp_write_protect = (tempbyte & 0x10) >> 4;
+    pcardinfo->card_csd.file_format = (tempbyte & 0x0C) >> 2;
+
+    /* CSD byte 15 */
+    tempbyte = (uint8_t)(card_opration.sd_csd[3] & SD_MASK_0_7BITS);
+    pcardinfo->card_csd.csd_crc = (tempbyte & 0xFE) >> 1;
+
+    return status;
+}
+
+/*!
+    \brief      check if the command sent error occurs
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+static sd_error_enum cmdsent_error_check(void)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t timeout = 400000;
+    /* check command sent flag */
+    while((RESET == sdio_flag_get(SDIO_FLAG_CMDSEND)) && (timeout > 0)){
+        --timeout;
+    }
+    /* command response is timeout */
+    if(0 == timeout){
+        status = SD_CMD_RESP_TIMEOUT;
+        return status;
+    }
+    /* if the command is sent, clear the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    return status;
+}
+
+/*!
+    \brief      check if error type for R1 response
+    \param[in]  resp: content of response
+    \param[out] none
+    \retval     sd_error_enum
+*/
+static sd_error_enum r1_error_type_check(uint32_t resp)
+{
+    sd_error_enum status = SD_ERROR;
+    /* check which error occurs */
+    if(resp & SD_R1_OUT_OF_RANGE){
+        status = SD_OUT_OF_RANGE;
+    }else if(resp & SD_R1_ADDRESS_ERROR){
+        status = SD_ADDRESS_ERROR;
+    }else if(resp & SD_R1_BLOCK_LEN_ERROR){
+        status = SD_BLOCK_LEN_ERROR;
+    }else if(resp & SD_R1_ERASE_SEQ_ERROR){
+        status = SD_ERASE_SEQ_ERROR;
+    }else if(resp & SD_R1_ERASE_PARAM){
+        status = SD_ERASE_PARAM;
+    }else if(resp & SD_R1_WP_VIOLATION){
+        status = SD_WP_VIOLATION;
+    }else if(resp & SD_R1_LOCK_UNLOCK_FAILED){
+        status = SD_LOCK_UNLOCK_FAILED;
+    }else if(resp & SD_R1_COM_CRC_ERROR){
+        status = SD_COM_CRC_ERROR;
+    }else if(resp & SD_R1_ILLEGAL_COMMAND){
+        status = SD_ILLEGAL_COMMAND;
+    }else if(resp & SD_R1_CARD_ECC_FAILED){
+        status = SD_CARD_ECC_FAILED;
+    }else if(resp & SD_R1_CC_ERROR){
+        status = SD_CC_ERROR;
+    }else if(resp & SD_R1_GENERAL_UNKNOWN_ERROR){
+        status = SD_GENERAL_UNKNOWN_ERROR;
+    }else if(resp & SD_R1_CSD_OVERWRITE){
+        status = SD_CSD_OVERWRITE;
+    }else if(resp & SD_R1_WP_ERASE_SKIP){
+        status = SD_WP_ERASE_SKIP;
+    }else if(resp & SD_R1_CARD_ECC_DISABLED){
+        status = SD_CARD_ECC_DISABLED;
+    }else if(resp & SD_R1_ERASE_RESET){
+        status = SD_ERASE_RESET;
+    }else if(resp & SD_R1_AKE_SEQ_ERROR){
+        status = SD_AKE_SEQ_ERROR;
+    }
+    return status;
+}
+
+/*!
+    \brief      check if error occurs for R1 response
+    \param[in]  cmdindex: the index of command
+    \param[out] none
+    \retval     sd_error_enum
+*/
+static sd_error_enum r1_error_check(uint8_t cmdindex)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t reg_status = 0, resp_r1 = 0;
+
+    /* store the content of SDIO_STAT */
+    reg_status = SDIO_STAT;
+    while(!(reg_status & (SDIO_FLAG_CCRCERR | SDIO_FLAG_CMDTMOUT | SDIO_FLAG_CMDRECV))){
+        reg_status = SDIO_STAT;
+    }
+    /* check whether an error or timeout occurs or command response received */
+    if(reg_status & SDIO_FLAG_CCRCERR){
+        status = SD_CMD_CRC_ERROR;
+        sdio_flag_clear(SDIO_FLAG_CCRCERR);
+        return status;
+    }else if(reg_status & SDIO_FLAG_CMDTMOUT){
+        status = SD_CMD_RESP_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_CMDTMOUT);
+        return status;
+    }
+
+    /* check whether the last response command index is the desired one */
+    if(sdio_command_index_get() != cmdindex){
+        status = SD_ILLEGAL_COMMAND;
+        return status;
+    }
+    /* clear all the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    /* get the SDIO response register 0 for checking */
+    resp_r1 = sdio_response_get(SDIO_RESPONSE0);
+    if(SD_ALLZERO == (resp_r1 & SD_R1_ERROR_BITS)){
+        /* no error occurs, return SD_OK */
+        status = SD_OK;
+        return status;
+    }
+
+    /* if some error occurs, return the error type */
+    status = r1_error_type_check(resp_r1);
+    return status;
+}
+
+/*!
+    \brief      check if error occurs for R2 response
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+static sd_error_enum r2_error_check(void)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t reg_status = 0;
+
+    /* store the content of SDIO_STAT */
+    reg_status = SDIO_STAT;
+    while(!(reg_status & (SDIO_FLAG_CCRCERR | SDIO_FLAG_CMDTMOUT | SDIO_FLAG_CMDRECV))){
+        reg_status = SDIO_STAT;
+    }
+    /* check whether an error or timeout occurs or command response received */
+    if(reg_status & SDIO_FLAG_CCRCERR){
+        status = SD_CMD_CRC_ERROR;
+        sdio_flag_clear(SDIO_FLAG_CCRCERR);
+        return status;
+    }else if(reg_status & SDIO_FLAG_CMDTMOUT){
+        status = SD_CMD_RESP_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_CMDTMOUT);
+        return status;
+    }
+    /* clear all the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    return status;
+}
+
+/*!
+    \brief      check if error occurs for R3 response
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+static sd_error_enum r3_error_check(void)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t reg_status = 0;
+
+    /* store the content of SDIO_STAT */
+    reg_status = SDIO_STAT;
+    while(!(reg_status & (SDIO_FLAG_CCRCERR | SDIO_FLAG_CMDTMOUT | SDIO_FLAG_CMDRECV))){
+        reg_status = SDIO_STAT;
+    }
+    if(reg_status & SDIO_FLAG_CMDTMOUT){
+        status = SD_CMD_RESP_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_CMDTMOUT);
+        return status;
+    }
+    /* clear all the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    return status;
+}
+
+/*!
+    \brief      check if error occurs for R6 response
+    \param[in]  cmdindex: the index of command
+    \param[out] prca: a pointer that store the RCA of card
+    \retval     sd_error_enum
+*/
+static sd_error_enum r6_error_check(uint8_t cmdindex, uint16_t *prca)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t reg_status = 0, response = 0;
+
+    /* store the content of SDIO_STAT */
+    reg_status = SDIO_STAT;
+    while(!(reg_status & (SDIO_FLAG_CCRCERR | SDIO_FLAG_CMDTMOUT | SDIO_FLAG_CMDRECV))){
+        reg_status = SDIO_STAT;
+    }
+    /* check whether an error or timeout occurs or command response received */
+    if(reg_status & SDIO_FLAG_CCRCERR){
+        status = SD_CMD_CRC_ERROR;
+        sdio_flag_clear(SDIO_FLAG_CCRCERR);
+        return status;
+    }else if(reg_status & SDIO_FLAG_CMDTMOUT){
+        status = SD_CMD_RESP_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_CMDTMOUT);
+        return status;
+    }
+
+    /* check whether the last response command index is the desired one */
+    if(sdio_command_index_get() != cmdindex){
+        status = SD_ILLEGAL_COMMAND;
+        return status;
+    }
+    /* clear all the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    /* get the SDIO response register 0 for checking */
+    response = sdio_response_get(SDIO_RESPONSE0);
+
+    if(SD_ALLZERO == (response & (SD_R6_COM_CRC_ERROR | SD_R6_ILLEGAL_COMMAND | SD_R6_GENERAL_UNKNOWN_ERROR))){
+        *prca = (uint16_t)(response >> 16);
+        return status;
+    }
+    /* if some error occurs, return the error type */
+    if(response & SD_R6_COM_CRC_ERROR){
+        status = SD_COM_CRC_ERROR;
+    }else if(response & SD_R6_ILLEGAL_COMMAND){
+        status = SD_ILLEGAL_COMMAND;
+    }else if(response & SD_R6_GENERAL_UNKNOWN_ERROR){
+        status = SD_GENERAL_UNKNOWN_ERROR;
+    }
+    return status;
+}
+
+/*!
+    \brief      check if error occurs for R7 response
+    \param[in]  none
+    \param[out] none
+    \retval     sd_error_enum
+*/
+static sd_error_enum r7_error_check(void)
+{
+    sd_error_enum status = SD_ERROR;
+    uint32_t reg_status = 0, timeout = 400000;
+
+    /* store the content of SDIO_STAT */
+    reg_status = SDIO_STAT;
+    while(!(reg_status & (SDIO_FLAG_CCRCERR | SDIO_FLAG_CMDTMOUT | SDIO_FLAG_CMDRECV)) && (timeout > 0)){
+        reg_status = SDIO_STAT;
+        --timeout;
+    }
+
+    /* check the flags */
+    if((reg_status & SDIO_FLAG_CMDTMOUT) || (0 == timeout)){
+        status = SD_CMD_RESP_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_CMDTMOUT);
+        return status;
+    }
+    if(reg_status & SDIO_FLAG_CMDRECV){
+        status = SD_OK;
+        sdio_flag_clear(SDIO_FLAG_CMDRECV);
+        return status;
+    }
+    return status;
+}
+
+/*!
+    \brief      get the state which the card is in
+    \param[in]  none
+    \param[out] pcardstate: a pointer that store the card state
+      \arg        SD_CARDSTATE_IDLE: card is in idle state
+      \arg        SD_CARDSTATE_READY: card is in ready state
+      \arg        SD_CARDSTATE_IDENTIFICAT: card is in identificat state
+      \arg        SD_CARDSTATE_STANDBY: card is in standby state
+      \arg        SD_CARDSTATE_TRANSFER: card is in transfer state
+      \arg        SD_CARDSTATE_DATA: card is in data state
+      \arg        SD_CARDSTATE_RECEIVING: card is in receiving state
+      \arg        SD_CARDSTATE_PROGRAMMING: card is in programming state
+      \arg        SD_CARDSTATE_DISCONNECT: card is in disconnect state
+      \arg        SD_CARDSTATE_LOCKED: card is in locked state
+    \retval     sd_error_enum
+*/
+static sd_error_enum sd_card_state_get(uint8_t *pcardstate)
+{
+    sd_error_enum status = SD_OK;
+    __IO uint32_t reg_status = 0, response = 0;
+
+    /* send CMD13(SEND_STATUS), addressed card sends its status register */
+    sdio_command_response_config(SD_CMD_SEND_STATUS, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+
+    /* store the content of SDIO_STAT */
+    reg_status = SDIO_STAT;
+    while(!(reg_status & (SDIO_FLAG_CCRCERR | SDIO_FLAG_CMDTMOUT | SDIO_FLAG_CMDRECV))){
+        reg_status = SDIO_STAT;
+    }
+    /* check whether an error or timeout occurs or command response received */
+    if(reg_status & SDIO_FLAG_CCRCERR){
+        status = SD_CMD_CRC_ERROR;
+        sdio_flag_clear(SDIO_FLAG_CCRCERR);
+        return status;
+    }else if(reg_status & SDIO_FLAG_CMDTMOUT){
+        status = SD_CMD_RESP_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_CMDTMOUT);
+        return status;
+    }
+
+    /* command response received, store the response command index */
+    reg_status = (uint32_t)sdio_command_index_get();
+    if(reg_status != (uint32_t)SD_CMD_SEND_STATUS){
+        status = SD_ILLEGAL_COMMAND;
+        return status;
+    }
+    /* clear all the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    /* get the SDIO response register 0 for checking */
+    response = sdio_response_get(SDIO_RESPONSE0);
+    *pcardstate = (uint8_t)((response >> 9) & 0x0000000F);
+
+    if(SD_ALLZERO == (response & SD_R1_ERROR_BITS)){
+        /* no error occurs, return SD_OK */
+        status = SD_OK;
+        return status;
+    }
+
+    /* if some error occurs, return the error type */
+    status = r1_error_type_check(response);
+    return status;
+}
+
+/*!
+    \brief      configure the bus width mode
+    \param[in]  buswidth: the bus width
+      \arg        SD_BUS_WIDTH_1BIT: 1-bit bus width
+      \arg        SD_BUS_WIDTH_4BIT: 4-bit bus width
+    \param[out] none
+    \retval     sd_error_enum
+*/
+static sd_error_enum sd_bus_width_config(uint32_t buswidth)
+{
+    sd_error_enum status = SD_OK;
+    /* check whether the card is locked */
+    if(sdio_response_get(SDIO_RESPONSE0) & SD_CARDSTATE_LOCKED){
+        status = SD_LOCK_UNLOCK_FAILED;
+        return status;
+    }
+    /* get the SCR register */
+    status = sd_scr_get(card_opration.sd_rca, card_opration.sd_scr);
+    if(SD_OK != status){
+        return status;
+    }
+
+    if(SD_BUS_WIDTH_1BIT == buswidth){
+        if(SD_ALLZERO != (card_opration.sd_scr[1] & buswidth)){
+            /* send CMD55(APP_CMD) to indicate next command is application specific command */
+            sdio_command_response_config(SD_CMD_APP_CMD, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+            sdio_wait_type_set(SDIO_WAITTYPE_NO);
+            sdio_csm_enable();
+            /* check if some error occurs */
+            status = r1_error_check(SD_CMD_APP_CMD);
+            if(SD_OK != status){
+                return status;
+            }
+
+            /* send ACMD6(SET_BUS_WIDTH) to define the data bus width */
+            sdio_command_response_config(SD_APPCMD_SET_BUS_WIDTH, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+            sdio_wait_type_set(SDIO_WAITTYPE_NO);
+            sdio_csm_enable();
+            /* check if some error occurs */
+            status = r1_error_check(SD_APPCMD_SET_BUS_WIDTH);
+            if(SD_OK != status){
+                return status;
+            }
+        }else{
+            status = SD_OPERATION_IMPROPER;
+        }
+        return status;
+    }else if(SD_BUS_WIDTH_4BIT == buswidth){
+        if(SD_ALLZERO != (card_opration.sd_scr[1] & buswidth)){
+            /* send CMD55(APP_CMD) to indicate next command is application specific command */
+            sdio_command_response_config(SD_CMD_APP_CMD, (uint32_t)card_opration.sd_rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+            sdio_wait_type_set(SDIO_WAITTYPE_NO);
+            sdio_csm_enable();
+            /* check if some error occurs */
+            status = r1_error_check(SD_CMD_APP_CMD);
+            if(SD_OK != status){
+                return status;
+            }
+
+            /* send ACMD6(SET_BUS_WIDTH) to define the data bus width */
+            sdio_command_response_config(SD_APPCMD_SET_BUS_WIDTH, (uint32_t)0x2, SDIO_RESPONSETYPE_SHORT);
+            sdio_wait_type_set(SDIO_WAITTYPE_NO);
+            sdio_csm_enable();
+            /* check if some error occurs */
+            status = r1_error_check(SD_APPCMD_SET_BUS_WIDTH);
+            if(SD_OK != status){
+                return status;
+            }
+        }else{
+            status = SD_OPERATION_IMPROPER;
+        }
+        return status;
+    }else{
+        status = SD_PARAMETER_INVALID;
+        return status;
+    }
+}
+
+/*!
+    \brief      get the SCR of corresponding card
+    \param[in]  rca: RCA of a card
+    \param[out] pscr: a pointer that store the SCR content
+    \retval     sd_error_enum
+*/
+static sd_error_enum sd_scr_get(uint16_t rca, uint32_t *pscr)
+{
+    sd_error_enum status = SD_OK;
+    uint32_t temp_scr[2] = {0, 0}, idx_scr = 0;
+    /* send CMD16(SET_BLOCKLEN) to set block length */
+    sdio_command_response_config(SD_CMD_SET_BLOCKLEN, (uint32_t)8, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_SET_BLOCKLEN);
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* send CMD55(APP_CMD) to indicate next command is application specific command */
+    sdio_command_response_config(SD_CMD_APP_CMD, (uint32_t)rca << SD_RCA_SHIFT, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_CMD_APP_CMD);
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* configure SDIO data */
+    sdio_data_config(SD_DATATIMEOUT, (uint32_t)8, SDIO_DATABLOCKSIZE_8BYTES);
+    sdio_data_transfer_config(SDIO_TRANSMODE_BLOCK, SDIO_TRANSDIRECTION_TOSDIO);
+    sdio_dsm_enable();
+
+    /* send ACMD51(SEND_SCR) to read the SD configuration register */
+    sdio_command_response_config(SD_APPCMD_SEND_SCR, (uint32_t)0x0, SDIO_RESPONSETYPE_SHORT);
+    sdio_wait_type_set(SDIO_WAITTYPE_NO);
+    sdio_csm_enable();
+    /* check if some error occurs */
+    status = r1_error_check(SD_APPCMD_SEND_SCR);
+    if(SD_OK != status){
+        return status;
+    }
+
+    /* store the received SCR */
+    while(!sdio_flag_get(SDIO_FLAG_DTCRCERR | SDIO_FLAG_DTTMOUT | SDIO_FLAG_RXORE | SDIO_FLAG_DTBLKEND | SDIO_FLAG_STBITE)){
+        if(RESET != sdio_flag_get(SDIO_FLAG_RXDTVAL)){
+            *(temp_scr + idx_scr) = sdio_data_read();
+            ++idx_scr;
+        }
+    }
+
+    /* check whether some error occurs */
+    if(RESET != sdio_flag_get(SDIO_FLAG_DTCRCERR)){
+        status = SD_DATA_CRC_ERROR;
+        sdio_flag_clear(SDIO_FLAG_DTCRCERR);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_DTTMOUT)){
+        status = SD_DATA_TIMEOUT;
+        sdio_flag_clear(SDIO_FLAG_DTTMOUT);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_RXORE)){
+        status = SD_RX_OVERRUN_ERROR;
+        sdio_flag_clear(SDIO_FLAG_RXORE);
+        return status;
+    }else if(RESET != sdio_flag_get(SDIO_FLAG_STBITE)){
+        status = SD_START_BIT_ERROR;
+        sdio_flag_clear(SDIO_FLAG_STBITE);
+        return status;
+    }
+
+    /* clear all the SDIO_INTC flags */
+    sdio_flag_clear(SDIO_MASK_INTC_FLAGS);
+    /* readjust the temp SCR value */
+    *(pscr) = ((temp_scr[1] & SD_MASK_0_7BITS) << 24) | ((temp_scr[1] & SD_MASK_8_15BITS) << 8) |
+                ((temp_scr[1] & SD_MASK_16_23BITS) >> 8) | ((temp_scr[1] & SD_MASK_24_31BITS) >> 24);
+    *(pscr + 1) = ((temp_scr[0] & SD_MASK_0_7BITS) << 24) | ((temp_scr[0] & SD_MASK_8_15BITS) << 8) |
+                ((temp_scr[0] & SD_MASK_16_23BITS) >> 8) | ((temp_scr[0] & SD_MASK_24_31BITS) >> 24);
+    return status;
+}
+
+/*!
+    \brief      get the data block size
+    \param[in]  bytesnumber: the number of bytes
+    \param[out] none
+    \retval     data block size
+      \arg        SDIO_DATABLOCKSIZE_1BYTE: block size = 1 byte
+      \arg        SDIO_DATABLOCKSIZE_2BYTES: block size = 2 bytes
+      \arg        SDIO_DATABLOCKSIZE_4BYTES: block size = 4 bytes
+      \arg        SDIO_DATABLOCKSIZE_8BYTES: block size = 8 bytes
+      \arg        SDIO_DATABLOCKSIZE_16BYTES: block size = 16 bytes
+      \arg        SDIO_DATABLOCKSIZE_32BYTES: block size = 32 bytes
+      \arg        SDIO_DATABLOCKSIZE_64BYTES: block size = 64 bytes
+      \arg        SDIO_DATABLOCKSIZE_128BYTES: block size = 128 bytes
+      \arg        SDIO_DATABLOCKSIZE_256BYTES: block size = 256 bytes
+      \arg        SDIO_DATABLOCKSIZE_512BYTES: block size = 512 bytes
+      \arg        SDIO_DATABLOCKSIZE_1024BYTES: block size = 1024 bytes
+      \arg        SDIO_DATABLOCKSIZE_2048BYTES: block size = 2048 bytes
+      \arg        SDIO_DATABLOCKSIZE_4096BYTES: block size = 4096 bytes
+      \arg        SDIO_DATABLOCKSIZE_8192BYTES: block size = 8192 bytes
+      \arg        SDIO_DATABLOCKSIZE_16384BYTES: block size = 16384 bytes
+*/
+static uint32_t sd_datablocksize_get(uint16_t bytesnumber)
+{
+    uint8_t exp_val = 0;
+    /* calculate the exponent of 2 */
+    while(1 != bytesnumber){
+        bytesnumber >>= 1;
+        ++exp_val;
+    }
+    return DATACTL_BLKSZ(exp_val);
+}
+
+/*!
+    \brief      configure the GPIO of SDIO interface
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+static void gpio_config(void)
+{
+    /* configure the SDIO_DAT0(PC8), SDIO_DAT1(PC9), SDIO_DAT2(PC10), SDIO_DAT3(PC11), SDIO_CLK(PC12) and SDIO_CMD(PD2) */
+    gpio_af_set(SDIO_CLK_PORT, GPIO_AF_12, SDIO_CLK_PIN);
+    gpio_af_set(SDIO_CMD_PORT, GPIO_AF_12, SDIO_CMD_PIN);
+    gpio_af_set(SDIO_D0_PORT,  GPIO_AF_12, SDIO_D0_PIN);
+    gpio_af_set(SDIO_D1_PORT,  GPIO_AF_12, SDIO_D1_PIN);
+    gpio_af_set(SDIO_D2_PORT,  GPIO_AF_12, SDIO_D2_PIN);
+    gpio_af_set(SDIO_D3_PORT,  GPIO_AF_12, SDIO_D3_PIN);
+
+    gpio_mode_set(SDIO_CLK_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, SDIO_CLK_PIN);
+    gpio_output_options_set(SDIO_CLK_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, SDIO_CLK_PIN);
+
+    gpio_mode_set(SDIO_CMD_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, SDIO_CMD_PIN);
+    gpio_output_options_set(SDIO_CMD_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, SDIO_CMD_PIN);
+
+    gpio_mode_set(SDIO_D0_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, SDIO_D0_PIN);
+    gpio_output_options_set(SDIO_D0_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, SDIO_D0_PIN);
+
+    gpio_mode_set(SDIO_D1_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, SDIO_D1_PIN);
+    gpio_output_options_set(SDIO_D1_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, SDIO_D1_PIN);
+
+    gpio_mode_set(SDIO_D2_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, SDIO_D2_PIN);
+    gpio_output_options_set(SDIO_D2_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, SDIO_D2_PIN);
+
+    gpio_mode_set(SDIO_D3_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, SDIO_D3_PIN);
+    gpio_output_options_set(SDIO_D3_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, SDIO_D3_PIN);
+}
+
+/*!
+    \brief      configure the RCU of SDIO and DMA
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+static void rcu_config(void)
+{
+    rcu_periph_clock_enable(SDIO_GPIO_CLK);
+    rcu_periph_clock_enable(SDIO_GPIO_CMD);
+    rcu_periph_clock_enable(SDIO_GPIO_D0);
+    rcu_periph_clock_enable(SDIO_GPIO_D1);
+    rcu_periph_clock_enable(SDIO_GPIO_D2);
+    rcu_periph_clock_enable(SDIO_GPIO_D3);
+
+    rcu_periph_clock_enable(SDIO_PERI_CLOCK);
+    rcu_periph_clock_enable(SDIO_DMA_CLOCK);
+}
+
+/*!
+    \brief      configure the DMA1 channel 3 for transferring data
+    \param[in]  srcbuf: a pointer point to a buffer which will be transferred
+    \param[in]  bufsize: the size of buffer(not used in flow controller is peripheral)
+    \param[out] none
+    \retval     none
+*/
+static void dma_transfer_config(uint32_t *srcbuf, uint32_t bufsize)
+{
+    dma_multi_data_parameter_struct dma_struct;
+    /* clear all the interrupt flags */
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_FEE);
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_SDE);
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_TAE);
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_HTF);
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_FTF);
+    dma_channel_disable(SDIO_DMA, SDIO_DMA_CHANNEL);
+    dma_deinit(SDIO_DMA, SDIO_DMA_CHANNEL);
+
+    /* configure the DMA1 channel 3 */
+    dma_struct.periph_addr        = (uint32_t)SDIO_FIFO_ADDR;
+    dma_struct.memory0_addr       = (uint32_t)srcbuf;
+    dma_struct.direction          = DMA_MEMORY_TO_PERIPH;
+    dma_struct.number             = 0;
+    dma_struct.periph_inc         = DMA_PERIPH_INCREASE_DISABLE;
+    dma_struct.memory_inc         = DMA_MEMORY_INCREASE_ENABLE;
+    dma_struct.periph_width       = DMA_PERIPH_WIDTH_32BIT;
+    dma_struct.memory_width       = DMA_MEMORY_WIDTH_32BIT;
+    dma_struct.priority           = DMA_PRIORITY_ULTRA_HIGH;
+    dma_struct.periph_burst_width = DMA_PERIPH_BURST_4_BEAT;
+    dma_struct.memory_burst_width = DMA_MEMORY_BURST_4_BEAT;
+    dma_struct.circular_mode      = DMA_CIRCULAR_MODE_DISABLE;
+    dma_struct.critical_value     = DMA_FIFO_4_WORD;
+    dma_multi_data_mode_init(SDIO_DMA, SDIO_DMA_CHANNEL, &dma_struct);
+
+    dma_flow_controller_config(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLOW_CONTROLLER_PERI);
+    dma_channel_subperipheral_select(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_SUBPERI4);
+
+    dma_channel_enable(SDIO_DMA, SDIO_DMA_CHANNEL);
+}
+
+/*!
+    \brief      configure the DMA1 channel 3 for receiving data
+    \param[in]  dstbuf: a pointer point to a buffer which will receive data
+    \param[in]  bufsize: the size of buffer(not used in flow controller is peripheral)
+    \param[out] none
+    \retval     none
+*/
+static void dma_receive_config(uint32_t *dstbuf, uint32_t bufsize)
+{
+    dma_multi_data_parameter_struct dma_struct;
+    /* clear all the interrupt flags */
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_FEE);
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_SDE);
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_TAE);
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_HTF);
+    dma_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLAG_FTF);
+    dma_channel_disable(SDIO_DMA, SDIO_DMA_CHANNEL);
+    dma_deinit(SDIO_DMA, SDIO_DMA_CHANNEL);
+
+    /* configure the DMA1 channel 3 */
+    dma_struct.periph_addr        = (uint32_t)SDIO_FIFO_ADDR;
+    dma_struct.memory0_addr       = (uint32_t)dstbuf;
+    dma_struct.direction          = DMA_PERIPH_TO_MEMORY;
+    dma_struct.number             = 0;
+    dma_struct.periph_inc         = DMA_PERIPH_INCREASE_DISABLE;
+    dma_struct.memory_inc         = DMA_MEMORY_INCREASE_ENABLE;
+    dma_struct.periph_width       = DMA_PERIPH_WIDTH_32BIT;
+    dma_struct.memory_width       = DMA_MEMORY_WIDTH_32BIT;
+    dma_struct.priority           = DMA_PRIORITY_ULTRA_HIGH;
+    dma_struct.periph_burst_width = DMA_PERIPH_BURST_4_BEAT;
+    dma_struct.memory_burst_width = DMA_MEMORY_BURST_4_BEAT;
+    dma_struct.critical_value     = DMA_FIFO_4_WORD;
+    dma_struct.circular_mode      = DMA_CIRCULAR_MODE_DISABLE;
+    dma_multi_data_mode_init(SDIO_DMA, SDIO_DMA_CHANNEL, &dma_struct);
+
+    dma_flow_controller_config(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_FLOW_CONTROLLER_PERI);
+    dma_channel_subperipheral_select(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_SUBPERI4);
+    dma_channel_enable(SDIO_DMA, SDIO_DMA_CHANNEL);
+}
+
+#if SDIO_DMA_USE_IPC
+static void sdio_dma_irq_config(void)
+{
+    dma_interrupt_enable(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_CHXCTL_FTFIE);
+    nvic_irq_enable(SDIO_DMA_IRQ, 0, 1);
+}
+
+void SDIO_DMA_IRQ_HANDLER(void)
+{
+    rt_interrupt_enter();
+
+    if(dma_interrupt_flag_get(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_INT_FLAG_FTF)) {
+        dma_interrupt_flag_clear(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_INT_FLAG_FTF);
+        dma_interrupt_disable(SDIO_DMA, SDIO_DMA_CHANNEL, DMA_CHXCTL_FTFIE);
+        rt_sem_release(&sd.sem);
+    }
+
+    rt_interrupt_leave();
+}
+#endif /* SDIO_DMA_USE_IPC */
+
+#endif /* RT_USING_SDIO */

bsp/gd32/arm/libraries/gd32_drivers/drv_sdio.h

@@ -0,0 +1,278 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-07-20     jiezhi320    the first version
+ */
+
+#ifndef __SDCARD_H_
+#define __SDCARD_H_
+
+#include <board.h>
+
+#if defined SOC_SERIES_GD32F10x
+#include "gd32f10x_sdio.h"
+#include "gd32f10x_dma.h"
+#elif defined SOC_SERIES_GD32F20x
+#include "gd32f20x_sdio.h"
+#include "gd32f20x_dma.h"
+#elif defined SOC_SERIES_GD32F30x
+#include "gd32f30x_sdio.h"
+#include "gd32f30x_dma.h"
+#elif defined SOC_SERIES_GD32F4xx
+#include "gd32f4xx_sdio.h"
+#include "gd32f4xx_dma.h"
+#endif
+
+#define SDIO_PERI_CLOCK            RCU_SDIO
+#define SDIO_GPIO_CLK              RCU_GPIOC
+#define SDIO_GPIO_CMD              RCU_GPIOD
+#define SDIO_GPIO_D0               RCU_GPIOC
+#define SDIO_GPIO_D1               RCU_GPIOC
+#define SDIO_GPIO_D2               RCU_GPIOC
+#define SDIO_GPIO_D3               RCU_GPIOC
+
+#define SDIO_CLK_PORT              GPIOC
+#define SDIO_CLK_PIN               GPIO_PIN_12
+#define SDIO_CMD_PORT              GPIOD
+#define SDIO_CMD_PIN               GPIO_PIN_2
+#define SDIO_D0_PORT               GPIOC
+#define SDIO_D0_PIN                GPIO_PIN_8
+#define SDIO_D1_PORT               GPIOC
+#define SDIO_D1_PIN                GPIO_PIN_9
+#define SDIO_D2_PORT               GPIOC
+#define SDIO_D2_PIN                GPIO_PIN_10
+#define SDIO_D3_PORT               GPIOC
+#define SDIO_D3_PIN                GPIO_PIN_11
+
+#define SDIO_DMA                   DMA1
+#define SDIO_DMA_CLOCK             RCU_DMA1
+#define SDIO_DMA_CHANNEL           DMA_CH3
+#define SDIO_DMA_IRQ               DMA1_Channel3_IRQn
+#define SDIO_DMA_IRQ_HANDLER       DMA1_Channel3_IRQHandler
+
+
+/* SD memory card bus commands index */
+#define SD_CMD_GO_IDLE_STATE                  ((uint8_t)0)   /* CMD0, GO_IDLE_STATE */
+#define SD_CMD_ALL_SEND_CID                   ((uint8_t)2)   /* CMD2, ALL_SEND_CID */
+#define SD_CMD_SEND_RELATIVE_ADDR             ((uint8_t)3)   /* CMD3, SEND_RELATIVE_ADDR */
+#define SD_CMD_SET_DSR                        ((uint8_t)4)   /* CMD4, SET_DSR */
+#define SD_CMD_SWITCH_FUNC                    ((uint8_t)6)   /* CMD6, SWITCH_FUNC */
+#define SD_CMD_SELECT_DESELECT_CARD           ((uint8_t)7)   /* CMD7, SELECT_DESELECT_CARD */
+#define SD_CMD_SEND_IF_COND                   ((uint8_t)8)   /* CMD8, SEND_IF_COND */
+#define SD_CMD_SEND_CSD                       ((uint8_t)9)   /* CMD9, SEND_CSD */
+#define SD_CMD_SEND_CID                       ((uint8_t)10)  /* CMD10, SEND_CID */
+#define SD_CMD_STOP_TRANSMISSION              ((uint8_t)12)  /* CMD12, STOP_TRANSMISSION */
+#define SD_CMD_SEND_STATUS                    ((uint8_t)13)  /* CMD13, SEND_STATUS */
+#define SD_CMD_GO_INACTIVE_STATE              ((uint8_t)15)  /* CMD15, GO_INACTIVE_STATE */
+#define SD_CMD_SET_BLOCKLEN                   ((uint8_t)16)  /* CMD16, SET_BLOCKLEN */
+#define SD_CMD_READ_SINGLE_BLOCK              ((uint8_t)17)  /* CMD17, READ_SINGLE_BLOCK */
+#define SD_CMD_READ_MULTIPLE_BLOCK            ((uint8_t)18)  /* CMD18, READ_MULTIPLE_BLOCK */
+#define SD_CMD_WRITE_BLOCK                    ((uint8_t)24)  /* CMD24, WRITE_BLOCK */
+#define SD_CMD_WRITE_MULTIPLE_BLOCK           ((uint8_t)25)  /* CMD25, WRITE_MULTIPLE_BLOCK */
+#define SD_CMD_PROG_CSD                       ((uint8_t)27)  /* CMD27, PROG_CSD */
+#define SD_CMD_SET_WRITE_PROT                 ((uint8_t)28)  /* CMD28, SET_WRITE_PROT */
+#define SD_CMD_CLR_WRITE_PROT                 ((uint8_t)29)  /* CMD29, CLR_WRITE_PROT */
+#define SD_CMD_SEND_WRITE_PROT                ((uint8_t)30)  /* CMD30, SEND_WRITE_PROT */
+#define SD_CMD_ERASE_WR_BLK_START             ((uint8_t)32)  /* CMD32, ERASE_WR_BLK_START */
+#define SD_CMD_ERASE_WR_BLK_END               ((uint8_t)33)  /* CMD33, ERASE_WR_BLK_END */
+#define SD_CMD_ERASE                          ((uint8_t)38)  /* CMD38, ERASE */
+#define SD_CMD_LOCK_UNLOCK                    ((uint8_t)42)  /* CMD42, LOCK_UNLOCK */
+#define SD_CMD_APP_CMD                        ((uint8_t)55)  /* CMD55, APP_CMD */
+#define SD_CMD_GEN_CMD                        ((uint8_t)56)  /* CMD56, GEN_CMD */
+
+/* SD memory card application specific commands index */
+#define SD_APPCMD_SET_BUS_WIDTH               ((uint8_t)6)   /* ACMD6, SET_BUS_WIDTH */
+#define SD_APPCMD_SD_STATUS                   ((uint8_t)13)  /* ACMD13, SD_STATUS */
+#define SD_APPCMD_SEND_NUM_WR_BLOCKS          ((uint8_t)22)  /* ACMD22, SEND_NUM_WR_BLOCKS */
+#define SD_APPCMD_SET_WR_BLK_ERASE_COUNT      ((uint8_t)23)  /* ACMD23, SET_WR_BLK_ERASE_COUNT */
+#define SD_APPCMD_SD_SEND_OP_COND             ((uint8_t)41)  /* ACMD41, SD_SEND_OP_COND */
+#define SD_APPCMD_SET_CLR_CARD_DETECT         ((uint8_t)42)  /* ACMD42, SET_CLR_CARD_DETECT */
+#define SD_APPCMD_SEND_SCR                    ((uint8_t)51)  /* ACMD51, SEND_SCR */
+
+/* card command class */
+#define SD_CCC_SWITCH                          BIT(10)       /* class 10 */
+#define SD_CCC_IO_MODE                         BIT(9)        /* class 9 */
+#define SD_CCC_APPLICATION_SPECIFIC            BIT(8)        /* class 8 */
+#define SD_CCC_LOCK_CARD                       BIT(7)        /* class 7 */
+#define SD_CCC_WRITE_PROTECTION                BIT(6)        /* class 6 */
+#define SD_CCC_ERASE                           BIT(5)        /* class 5 */
+#define SD_CCC_BLOCK_WRITE                     BIT(4)        /* class 4 */
+#define SD_CCC_BLOCK_READ                      BIT(2)        /* class 2 */
+#define SD_CCC_BASIC                           BIT(0)        /* class 0 */
+
+/* SD card data transmission mode */
+#define SD_DMA_MODE                           ((uint32_t)0x00000000) /* DMA mode */
+#define SD_POLLING_MODE                       ((uint32_t)0x00000001) /* polling mode */
+
+/* lock unlock status */
+#define SD_LOCK                               ((uint8_t)0x05)        /* lock the SD card */
+#define SD_UNLOCK                             ((uint8_t)0x02)        /* unlock the SD card */
+
+/* supported memory cards types */
+typedef enum
+{
+    SDIO_STD_CAPACITY_SD_CARD_V1_1 = 0,   /* standard capacity SD card version 1.1 */
+    SDIO_STD_CAPACITY_SD_CARD_V2_0,       /* standard capacity SD card version 2.0 */
+    SDIO_HIGH_CAPACITY_SD_CARD,           /* high capacity SD card */
+    SDIO_SECURE_DIGITAL_IO_CARD,          /* secure digital IO card */
+    SDIO_SECURE_DIGITAL_IO_COMBO_CARD,    /* secure digital IO combo card */
+    SDIO_MULTIMEDIA_CARD,                 /* multimedia card */
+    SDIO_HIGH_CAPACITY_MULTIMEDIA_CARD,   /* high capacity multimedia card */
+    SDIO_HIGH_SPEED_MULTIMEDIA_CARD       /* high speed multimedia card */
+}sdio_card_type_enum;
+
+/* card identification (CID) register */
+typedef struct
+{
+    __IO uint8_t mid;                     /* manufacturer ID */
+    __IO uint16_t oid;                    /* OEM/application ID */
+    __IO uint32_t pnm0;                   /* product name */
+    __IO uint8_t pnm1;                    /* product name */
+    __IO uint8_t prv;                     /* product revision */
+    __IO uint32_t psn;                    /* product serial number */
+    __IO uint16_t mdt;                    /* manufacturing date */
+    __IO uint8_t cid_crc;                 /* CID CRC7 checksum */
+}sd_cid_struct;
+
+/* CSD register (CSD version 1.0 and 2.0) */
+typedef struct
+{
+    __IO uint8_t csd_struct;              /* CSD struct */
+    __IO uint8_t taac;                    /* data read access-time */
+    __IO uint8_t nsac;                    /* data read access-time in CLK cycles */
+    __IO uint8_t tran_speed;              /* max. data transfer rate */
+    __IO uint16_t ccc;                    /* card command classes */
+    __IO uint8_t read_bl_len;             /* max. read data block length */
+    __IO uint8_t read_bl_partial;         /* partial blocks for read allowed */
+    __IO uint8_t write_blk_misalign;      /* write block misalignment */
+    __IO uint8_t read_blk_misalign;       /* read block misalignment */
+    __IO uint8_t dsp_imp;                 /* DSR implemented */
+    __IO uint32_t c_size;                 /* device size, 12 bits in CSD version 1.0, 22 bits in CSD version 2.0 */
+    __IO uint8_t vdd_r_curr_min;          /* max. read current @VDD min, CSD version 1.0 */
+    __IO uint8_t vdd_r_curr_max;          /* max. read current @VDD max, CSD version 1.0 */
+    __IO uint8_t vdd_w_curr_min;          /* max. write current @VDD min, CSD version 1.0 */
+    __IO uint8_t vdd_w_curr_max;          /* max. write current @VDD max, CSD version 1.0 */
+    __IO uint8_t c_size_mult;             /* device size multiplier, CSD version 1.0 */
+    __IO uint8_t erase_blk_en;            /* erase single block enable */
+    __IO uint8_t sector_size;             /* erase sector size */
+    __IO uint8_t wp_grp_size;             /* write protect group size */
+    __IO uint8_t wp_grp_enable;           /* write protect group enable */
+    __IO uint8_t r2w_factor;              /* write speed factor */
+    __IO uint8_t write_bl_len;            /* max. write data block length */
+    __IO uint8_t write_bl_partial;        /* partial blocks for write allowed */
+    __IO uint8_t file_format_grp;         /* file format group */
+    __IO uint8_t copy_flag;               /* copy flag (OTP) */
+    __IO uint8_t perm_write_protect;      /* permanent write protection */
+    __IO uint8_t tmp_write_protect;       /* temporary write protection */
+    __IO uint8_t file_format;             /* file format */
+    __IO uint8_t csd_crc;                 /* CSD CRC checksum */
+}sd_csd_struct;
+
+/* information of card */
+typedef struct
+{
+    sd_cid_struct card_cid;               /* CID register */
+    sd_csd_struct card_csd;               /* CSD register */
+    sdio_card_type_enum card_type;        /* card tpye */
+    uint32_t card_capacity;               /* card capacity */
+    uint32_t card_blocksize;              /* card block size */
+    uint16_t card_rca;                    /* card relative card address */
+}sd_card_info_struct;
+
+/* SD error flags */
+typedef enum
+{
+    SD_OUT_OF_RANGE = 0,                  /* command's argument was out of range */
+    SD_ADDRESS_ERROR,                     /* misaligned address which did not match the block length */
+    SD_BLOCK_LEN_ERROR,                   /* transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */
+    SD_ERASE_SEQ_ERROR,                   /* an error in the sequence of erase command occurs */
+    SD_ERASE_PARAM,                       /* an invalid selection of write-blocks for erase occurred */
+    SD_WP_VIOLATION,                      /* attempt to program a write protect block or permanent write protected card */
+    SD_LOCK_UNLOCK_FAILED,                /* sequence or password error has been detected in lock/unlock card command */
+    SD_COM_CRC_ERROR,                     /* CRC check of the previous command failed */
+    SD_ILLEGAL_COMMAND,                   /* command not legal for the card state */
+    SD_CARD_ECC_FAILED,                   /* card internal ECC was applied but failed to correct the data */
+    SD_CC_ERROR,                          /* internal card controller error */
+    SD_GENERAL_UNKNOWN_ERROR,             /* general or unknown error occurred during the operation */
+    SD_CSD_OVERWRITE,                     /* read only section of the CSD does not match the card content or an attempt to reverse the copy or permanent WP bits was made */
+    SD_WP_ERASE_SKIP,                     /* only partial address space was erased or the temporary or permanent write protected card was erased */
+    SD_CARD_ECC_DISABLED,                 /* command has been executed without using internal ECC */
+    SD_ERASE_RESET,                       /* erase sequence was cleared before executing because an out of erase sequence command was received */
+    SD_AKE_SEQ_ERROR,                     /* error in the sequence of the authentication process */
+
+    SD_CMD_CRC_ERROR,                     /* command response received (CRC check failed) */
+    SD_DATA_CRC_ERROR,                    /* data block sent/received (CRC check failed) */
+    SD_CMD_RESP_TIMEOUT,                  /* command response timeout */
+    SD_DATA_TIMEOUT,                      /* data timeout */
+    SD_TX_UNDERRUN_ERROR,                 /* transmit FIFO underrun error occurs */
+    SD_RX_OVERRUN_ERROR,                  /* received FIFO overrun error occurs */
+    SD_START_BIT_ERROR,                   /* start bit error in the bus */
+
+    SD_VOLTRANGE_INVALID,                 /* the voltage range is invalid */
+    SD_PARAMETER_INVALID,                 /* the parameter is invalid */
+    SD_OPERATION_IMPROPER,                /* the operation is improper */
+    SD_FUNCTION_UNSUPPORTED,              /* the function is unsupported */
+    SD_ERROR,                             /* an error occurred */
+    SD_OK                                 /* no error occurred */
+}sd_error_enum;
+
+typedef enum
+{
+  SD_NO_TRANSFER = 0,                     /* no data transfer is acting */
+  SD_TRANSFER_IN_PROGRESS                 /* data transfer is in progress */
+}sd_transfer_state_enum;
+
+
+/* function declarations */
+/* initialize the SD card and make it in standby state */
+sd_error_enum sd_init(void);
+/* initialize the card and get CID and CSD of the card */
+sd_error_enum sd_card_init(void);
+/* configure the clock and the work voltage, and get the card type */
+sd_error_enum sd_power_on(void);
+/* close the power of SDIO */
+sd_error_enum sd_power_off(void);
+
+/* configure the bus mode */
+sd_error_enum sd_bus_mode_config(uint32_t busmode);
+/* configure the mode of transmission */
+sd_error_enum sd_transfer_mode_config(uint32_t txmode);
+
+/* read a block data into a buffer from the specified address of a card */
+sd_error_enum sd_block_read(uint32_t *preadbuffer, uint32_t readaddr, uint16_t blocksize);
+/* read multiple blocks data into a buffer from the specified address of a card */
+sd_error_enum sd_multiblocks_read(uint32_t *preadbuffer, uint32_t readaddr, uint16_t blocksize, uint32_t blocksnumber);
+/* write a block data to the specified address of a card */
+sd_error_enum sd_block_write(uint32_t *pwritebuffer, uint32_t writeaddr, uint16_t blocksize);
+/* write multiple blocks data to the specified address of a card */
+sd_error_enum sd_multiblocks_write(uint32_t *pwritebuffer, uint32_t writeaddr, uint16_t blocksize, uint32_t blocksnumber);
+/* erase a continuous area of a card */
+sd_error_enum sd_erase(uint32_t startaddr, uint32_t endaddr);
+/* process all the interrupts which the corresponding flags are set */
+sd_error_enum sd_interrupts_process(void);
+
+/* select or deselect a card */
+sd_error_enum sd_card_select_deselect(uint16_t cardrca);
+/* get the card status whose response format R1 contains a 32-bit field */
+sd_error_enum sd_cardstatus_get(uint32_t *pcardstatus);
+/* get the SD status, the size of the SD status is one data block of 512 bit */
+sd_error_enum sd_sdstatus_get(uint32_t *psdstatus);
+/* stop an ongoing data transfer */
+sd_error_enum sd_transfer_stop(void);
+/* lock or unlock a card */
+sd_error_enum sd_lock_unlock(uint8_t lockstate);
+
+/* get the data transfer state */
+sd_transfer_state_enum sd_transfer_state_get(void);
+/* get SD card capacity(KB) */
+uint32_t sd_card_capacity_get(void);
+/* get the detailed information of the SD card based on received CID and CSD */
+sd_error_enum sd_card_information_get(sd_card_info_struct *pcardinfo);
+
+#endif /* __SDCARD_H_ */
+
+