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- /*****************************************************************************
- *
- * Copyright Andes Technology Corporation 2007-2008
- * All Rights Reserved.
- *
- * Revision History:
- *
- * Sep.26.2007 Created.
- ****************************************************************************/
- /*****************************************************************************
- *
- * FILE NAME VERSION
- *
- * sdd_sd.c
- *
- * DESCRIPTION
- *
- * Secure digital card specification 2.0 definition.
- *
- * Currently only Secure Digital Memory standards are well-defined.
- * Remaining spec mostly are left for future developers.
- *
- * DATA STRUCTURES
- *
- * None
- *
- * DEPENDENCIES
- *
- * None
- *
- ****************************************************************************/
- #include "sdd.h"
- #include "sdd_sd.h"
- /*
- * If SDD_SMALL_FOOTPRINT is defined, SD command routines are defined as
- * macros which will be redirect to a general command issuing routine.
- *
- * If performance is required, set SDD_SMALL_FOOTPRINT to 0. The SD command
- * issuing routines are then a set of expanded code.
- */
- #if (SDD_SMALL_FOOTPRINT)
- #define SDC_INLINE static _inline
- #else /* SDD_SMALL_FOOTPRINT */
- #define SDC_INLINE static
- #endif /* SDD_SMALL_FOOTPRINT */
- /* Local Helper Routines */
- SDC_INLINE uint32_t _sd_cmd(uint32_t cmd)
- {
- uint32_t retry_cnt = 0;
- /* Make sure card exists */
- if (GETB32(SDC_STATUS, SDC_SR_CARD_DETECT_BIT))
- return SDD_CARD_REMOVED;
- /* Clear SDC status bits */
- OUT32(SDC_CLEAR, SDC_RSP_CRC_FAIL_MASK | SDC_RSP_TIMEOUT_MASK |
- SDC_RSP_CRC_OK_MASK | SDC_CMD_SENT_MASK);
- /*OUT32(SDC_CLEAR, SDC_CLEAR_ALL); */
- /* Send command */
- OUT32(SDC_CMD, cmd);
- /* Wait until the command is on the way to the card ... */
- while (retry_cnt++ < SD_CMD_MAX_RETRY_COUNT) {
- /* Make sure card exists */
- if (GETB32(SDC_STATUS, SDC_SR_CARD_DETECT_BIT))
- return SDD_CARD_REMOVED;
- /* Get new status of SDC */
- if (GETB32(SDC_STATUS, SDC_SR_CMD_SENT_BIT) != 0)
- return HAL_SUCCESS;
- }
- return SDD_CMD_TIMEOUT;
- }
- SDC_INLINE uint32_t _sd_cmd_arg(uint32_t cmd, uint32_t arg)
- {
- uint32_t retry_cnt = 0;
- /* Make sure card exists */
- if (GETB32(SDC_STATUS, SDC_SR_CARD_DETECT_BIT))
- return SDD_CARD_REMOVED;
- /* Clear SDC status bits */
- OUT32(SDC_CLEAR, SDC_RSP_CRC_FAIL_MASK | SDC_RSP_TIMEOUT_MASK |
- SDC_RSP_CRC_OK_MASK | SDC_CMD_SENT_MASK);
- /*OUT32(SDC_CLEAR, SDC_CLEAR_ALL); */
- /* Prepare Argument */
- OUT32(SDC_CMD_ARG, arg);
- /* Send command */
- OUT32(SDC_CMD, cmd);
- /* Wait until the command is on the way to the card ... */
- while (retry_cnt++ < SD_CMD_MAX_RETRY_COUNT) {
- /* Make sure card exists */
- if (GETB32(SDC_STATUS, SDC_SR_CARD_DETECT_BIT))
- return SDD_CARD_REMOVED;
- /* Get new status of SDC */
- if (GETB32(SDC_STATUS, SDC_SR_CMD_SENT_BIT) != 0)
- return HAL_SUCCESS;
- }
- return SDD_CMD_TIMEOUT;
- }
- SDC_INLINE uint32_t _sd_cmd_r32(uint32_t cmd, SD_R32 * rsp)
- {
- uint32_t retry_cnt = 0;
- uint32_t sdc_sr = 0;
- /* Make sure card exists */
- if (GETB32(SDC_STATUS, SDC_SR_CARD_DETECT_BIT))
- return SDD_CARD_REMOVED;
- /* Clear SDC status bits */
- OUT32(SDC_CLEAR, SDC_RSP_CRC_FAIL_MASK | SDC_RSP_TIMEOUT_MASK |
- SDC_RSP_CRC_OK_MASK | SDC_CMD_SENT_MASK);
- /*OUT32(SDC_CLEAR, SDC_CLEAR_ALL); */
- /* Send command */
- OUT32(SDC_CMD, cmd);
- /* Wait until the command is responsed ... */
- while (retry_cnt++ < SD_CMD_MAX_RETRY_COUNT) {
- sdc_sr = IN32(SDC_STATUS);
- /* Make sure card exists */
- if (sdc_sr & SDC_SR_CARD_DETECT_BIT)
- return SDD_CARD_REMOVED;
- /* Check error status */
- if (sdc_sr & SDC_SR_RSP_CRC_OK_MASK) {
- rsp->r[0] = IN32(SDC_R0);
- return HAL_SUCCESS;
- }
- else if (sdc_sr & SDC_SR_RSP_CRC_FAIL_MASK) {
- return SDD_RSP_CRC_ERROR;
- }
- else if (sdc_sr & SDC_SR_RSP_TIMEOUT_MASK) {
- return SDD_RSP_TIMEOUT;
- }
- }
- return SDD_CMD_TIMEOUT;
- }
- SDC_INLINE uint32_t _sd_cmd_arg_r32(uint32_t cmd, uint32_t arg, SD_R32 * rsp)
- {
- uint32_t sdc_sr = 0;
- /* Make sure card exists */
- if (GETB32(SDC_STATUS, SDC_SR_CARD_DETECT_BIT))
- return SDD_CARD_REMOVED;
- /* Clear SDC status bits */
- OUT32(SDC_CLEAR, SDC_RSP_CRC_FAIL_MASK | SDC_RSP_TIMEOUT_MASK |
- SDC_RSP_CRC_OK_MASK);
- /*OUT32(SDC_CLEAR, SDC_CLEAR_ALL); */
- /* Prepare Argument */
- OUT32(SDC_CMD_ARG, arg);
- /* Send command */
- OUT32(SDC_CMD, cmd);
- /* Wait until the command is responsed ... */
- while (1) {
- // _nds_kwait(0x1000); /* hw need delay ? */
- sdc_sr = IN32(SDC_STATUS);
- /* Make sure card exists */
- if (sdc_sr & SDC_SR_CARD_DETECT_BIT)
- return SDD_CARD_REMOVED;
- /* Check error status */
- if (sdc_sr & SDC_SR_RSP_CRC_OK_MASK) {
- rsp->r[0] = IN32(SDC_R0);
- return HAL_SUCCESS;
- }
- else if (sdc_sr & SDC_SR_RSP_CRC_FAIL_MASK) {
- return SDD_RSP_CRC_ERROR;
- }
- else if (sdc_sr & SDC_SR_RSP_TIMEOUT_MASK) {
- return SDD_RSP_TIMEOUT;
- }
- }
- return SDD_CMD_TIMEOUT;
- }
- SDC_INLINE uint32_t _sd_cmd_r128(uint32_t cmd, SD_R128 * rsp)
- {
- uint32_t retry_cnt = 0;
- uint32_t sdc_sr = 0;
- /* Make sure card exists */
- if (GETB32(SDC_STATUS, SDC_SR_CARD_DETECT_BIT))
- return SDD_CARD_REMOVED;
- /* Clear SDC status bits */
- OUT32(SDC_CLEAR, SDC_RSP_CRC_FAIL_MASK | SDC_RSP_TIMEOUT_MASK |
- SDC_RSP_CRC_OK_MASK | SDC_CMD_SENT_MASK);
- /*OUT32(SDC_CLEAR, SDC_CLEAR_ALL); */
- /* Send command */
- OUT32(SDC_CMD, cmd);
- /* Wait until the command is responsed ... */
- while (retry_cnt++ < SD_CMD_MAX_RETRY_COUNT) {
- sdc_sr = IN32(SDC_STATUS);
- /* Make sure card exists */
- if (sdc_sr & SDC_SR_CARD_DETECT_BIT)
- return SDD_CARD_REMOVED;
- /* Check error status */
- if (sdc_sr & SDC_SR_RSP_CRC_OK_MASK) {
- rsp->r[0] = IN32(SDC_R0);
- rsp->r[1] = IN32(SDC_R1);
- rsp->r[2] = IN32(SDC_R2);
- rsp->r[3] = IN32(SDC_R3);
- return HAL_SUCCESS;
- }
- else if (sdc_sr & SDC_SR_RSP_CRC_FAIL_MASK) {
- return SDD_RSP_CRC_ERROR;
- }
- else if (sdc_sr & SDC_SR_RSP_TIMEOUT_MASK) {
- return SDD_RSP_TIMEOUT;
- }
- }
- return SDD_CMD_TIMEOUT;
- }
- SDC_INLINE uint32_t _sd_cmd_arg_r128(uint32_t cmd, uint32_t arg, SD_R128 * rsp)
- {
- uint32_t retry_cnt = 0;
- uint32_t sdc_sr = 0;
- /* Make sure card exists */
- if (GETB32(SDC_STATUS, SDC_SR_CARD_DETECT_BIT))
- return SDD_CARD_REMOVED;
- /* Clear SDC status bits */
- OUT32(SDC_CLEAR, SDC_RSP_CRC_FAIL_MASK | SDC_RSP_TIMEOUT_MASK |
- SDC_RSP_CRC_OK_MASK | SDC_CMD_SENT_MASK);
- /*OUT32(SDC_CLEAR, SDC_CLEAR_ALL); */
- /* Prepare Argument */
- OUT32(SDC_CMD_ARG, arg);
- /* Send command */
- OUT32(SDC_CMD, cmd);
- /* Wait until the command is responsed ... */
- while (retry_cnt++ < SD_CMD_MAX_RETRY_COUNT) {
- sdc_sr = IN32(SDC_STATUS);
- /* Make sure card exists */
- if (sdc_sr & SDC_SR_CARD_DETECT_BIT)
- return SDD_CARD_REMOVED;
- /* Check error status */
- if (sdc_sr & SDC_SR_RSP_CRC_OK_MASK) {
- rsp->r[0] = IN32(SDC_R0);
- rsp->r[1] = IN32(SDC_R1);
- rsp->r[2] = IN32(SDC_R2);
- rsp->r[3] = IN32(SDC_R3);
- return HAL_SUCCESS;
- }
- else if (sdc_sr & SDC_SR_RSP_CRC_FAIL_MASK) {
- return SDD_RSP_CRC_ERROR;
- }
- else if (sdc_sr & SDC_SR_RSP_TIMEOUT_MASK) {
- return SDD_RSP_TIMEOUT;
- }
- }
- return SDD_CMD_TIMEOUT;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd0
- *
- * DESCRIPTION
- *
- * This function issues SD command GO_IDLE_STATE: Reset all cards to idle
- * state.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * idle -> idle
- *
- * Argument:
- * [31:0] stuff bits
- *
- * Response:
- * None
- *
- * INPUTS
- *
- * None.
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd0(void)
- {
- return _sd_cmd(SDC_CMD0_GO_IDLE_STATE);
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd2
- *
- * DESCRIPTION
- *
- * This function issues SD command ALL_SEND_CID: Ask any card to send the
- * CID numbers
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * ready -> identification
- *
- * Argument:
- * [31:0] stuff bits
- *
- * Response:
- * R2 [127:1] CID
- *
- * INPUTS
- *
- * cid : Pointer to SD_CID struct.
- *
- * OUTPUTS
- *
- * cid : SD_CID struct which holds the card's CID register value.
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd2(SD_CID * cid)
- {
- return _sd_cmd_r128(SDC_CMD2_ALL_SEND_CID, cid);
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd3
- *
- * DESCRIPTION
- *
- * This function issues SD command SEND_RELATIVE_ADDR: Ask the card to
- * publish a new RCA.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * identification -> standby
- * standy -> standby
- *
- * Argument:
- * [31:0] stuff bits
- *
- * Response:
- * R6 [23:08] card status bits: 23, 22, 19, 12:0
- * [39:24] New publishded RCA
- *
- * INPUTS
- *
- * rca : Pointer to SD_R32 struct to receive RCA.
- *
- * OUTPUTS
- *
- * rca : SD_R32 struct where RCA will be placed at [31:16].
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd3(SD_R32 * rca)
- {
- return _sd_cmd_r32(SDC_CMD3_SEND_RELATIVE_ADDR, rca);
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd4
- *
- * DESCRIPTION
- *
- * This function issues SD command SET_DSR: Program DSR of all cards.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * standy -> standby
- *
- * Argument:
- * [31:16] DSR
- *
- * Response:
- * None
- *
- * INPUTS
- *
- * dsr : uint32_t value where DSR is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd4(uint32_t dsr)
- {
- return _sd_cmd_arg(SDC_CMD4_SET_DSR, dsr);
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd7
- *
- * DESCRIPTION
- *
- * This function issues SD command SELECT/DESELECT_CARD: Toggles between
- * standby and transfer states or between programming and disconnect
- * states. Cards with matching RCA is selected, otherwise deselected.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * selected card:
- * standby -> transfer
- * disconnected -> programming
- * deselected card
- * standby -> standby
- * transfer -> standby
- * sending-data -> standby
- * programming -> disconnected
- *
- * Argument:
- * [31:16] RCA
- *
- * Response:
- * R1b [39:8] card status
- * DAT0 busy signal
- *
- * INPUTS
- *
- * rca : SD_R32 struct where RCA is at [31:16].
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd7(uint32_t rca, SD_R32 * csr)
- {
- uint32_t status = _sd_cmd_arg_r32(SDC_CMD7_SELECT_DESELECT_CARD, rca, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd8
- *
- * DESCRIPTION
- *
- * This function issues SD command SEND_IF_COND: Send VHS to SD card before
- * issuing ACMD41 during initialization and identification process.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * idle -> idle
- *
- * Argument:
- * [11:8] VHS (see R7 bellow)
- * [ 7:0] Arbitrary Check Pattern (10101010b(0xaa) is suggested)
- *
- * Response:
- * R7 [19:16] voltage accepted (VHS)
- * 0001b (0x01) -> 2.7-3.6v
- * others are reserved or undefined
- *
- * INPUTS
- *
- * vhs_arg: uint32_t value with VHS at [11:8] and check-ptn at [7:0].
- * vhs_rsp: Pointer to SD_R32 struct to hold the response.
- *
- * OUTPUTS
- *
- * vhs_rsp: SD_R32 struct with VHS at [11:8] and check-ptn at [7:0].
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd8(uint32_t vhs_arg, SD_R32 * vhs_rsp)
- {
- return _sd_cmd_arg_r32(SDC_CMD8_SEND_IF_COND, vhs_arg, vhs_rsp);
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd9
- *
- * DESCRIPTION
- *
- * This function issues SD command SEND_CSD: Ask addressed card to send its
- * CSD on the command line.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * standby -> standby
- *
- * Argument:
- * [31:16] RCA
- *
- * Response:
- * R2 [127:1] CSD
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- * csd : Pointer to SD_CSD struct.
- *
- * OUTPUTS
- *
- * csd : SD_CSD struct which contains CSD response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd9(uint32_t rca, SD_CSD * csd)
- {
- return _sd_cmd_arg_r128(SDC_CMD9_SEND_CSD, rca, csd);
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd10
- *
- * DESCRIPTION
- *
- * This function issues SD command SEND_CID: Ask addressed card to send its
- * CID on the command line.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * standby -> standby
- *
- * Argument:
- * [31:16] RCA
- *
- * Response:
- * R2 [127:1] CID
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- * cid : Pointer to SD_CID struct.
- *
- * OUTPUTS
- *
- * cid : SD_CID struct which contains CID response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd10(uint32_t rca, SD_CID * cid)
- {
- return _sd_cmd_arg_r128(SDC_CMD10_SEND_CID, rca, cid);
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd12
- *
- * DESCRIPTION
- *
- * This function issues SD command STOP_TRANSMISSION: Forces the card to
- * stop transmission.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * snedning-data -> transfer
- * receiving-data -> programming
- *
- * Argument:
- * [31:0] stuff bits
- *
- * Response:
- * R1b [39:8] card status
- * DAT0 busy signal
- *
- * INPUTS
- *
- * csr : Pointer to SD_R32 value.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd12(SD_R32 * csr)
- {
- uint32_t status = _sd_cmd_r32(SDC_CMD12_STOP_TRANSMISSION, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr)) /* todo: ok to check all error bits */
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd13
- *
- * DESCRIPTION
- *
- * This function issues SD command SEND_STATUS: Ask the card to send its
- * card status.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * standby -> standby
- * transfer -> transfer
- * sending-data -> sending-data
- * receiving-data -> receieving-data
- * programming -> programming
- * disconnect -> disconnect
- *
- * Argument:
- * [31:16] RCA
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- * csr : Pointer to SD_R32 to receive CSR.
- *
- * OUTPUTS
- *
- * csr : SD_R32 which holds the received CSR.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd13(uint32_t rca, SD_R32 * csr)
- {
- uint32_t status = _sd_cmd_arg_r32(SDC_CMD13_SEND_STATUS, rca, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd15
- *
- * DESCRIPTION
- *
- * This function issues SD command GO_INACTIVE_STATE: Inactivate the
- * addressed card to inactive state.
- *
- * Class: 0 (basic commands)
- *
- * State Transition:
- * standby -> inactive
- * transfer -> inactive
- * sending-data -> inactive
- * receiving-data -> inactive
- * programming -> inactive
- * disconnect -> inactive
- *
- * Argument:
- * [31:16] RCA
- * [15: 0] Should be 0!
- *
- * Response:
- * None
- *
- * INPUTS
- *
- * rca : uint32_t value with RCA at [31:16], 0 at [15:0].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd15(uint32_t rca)
- {
- return _sd_cmd_arg(SDC_CMD15_GO_INACTIVE_STATE, rca);
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd16
- *
- * DESCRIPTION
- *
- * This function issues SD command SET_BLOCKLEN: Set block length (bytes)
- * for standard capacity SD cards. SDHC is fixed to 512 bytes and ignores
- * this field except the LOCK_UNLOCK command.
- *
- * Class: 2/4/7 (block-oriented read/write/lock_unlock commands)
- *
- * State Transition:
- * transfer -> transfer
- *
- * Argument:
- * [31:0] block length
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * blk_len: uint32_t block length value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd16(uint32_t blk_len, SD_R32 * csr)
- {
- uint32_t status = _sd_cmd_arg_r32(SDC_CMD16_SET_BLOCKLEN, blk_len, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd17
- *
- * DESCRIPTION
- *
- * This function issues SD command READ_SINGLE_BLOCK: Reads a single block
- * size of data.
- *
- * Class: 2 (block-oriented read commands)
- *
- * State Transition:
- * transfer -> sending-data
- *
- * Argument:
- * [31:0] data address (byte-unit for SD, block unit for SDHC)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd17(uint32_t addr, SD_R32 * csr)
- {
- #if 0
- uint32_t retry = 0;
- while (retry++ < SD_STATE_MAX_RETRY_COUNT) {
- #endif
- /* Send SD command */
- uint32_t status =
- _sd_cmd_arg_r32(SDC_CMD17_READ_SINGLE_BLOCK, addr, csr);
- if (status != HAL_SUCCESS) {
- return status;
- }
- /* Check error status */
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- #if 0
- /* Check whether make transition to sending-data state */
- switch (SD_CSR_GET_CURRENT_STATE(*csr)) {
- case SD_STATE_DATA:
- /* The card is ready to send out data */
- return HAL_SUCCESS;
- case SD_STATE_TRAN:
- /* Repeat previous command until the card get to the state */
- break;
- case SD_STATE_STBY:
- case SD_STATE_RCV:
- case SD_STATE_PRG:
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_DIS:
- default:
- /* Invalid current state before deselecting the card. */
- return SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- #else
- return HAL_SUCCESS;
- #endif
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd18
- *
- * DESCRIPTION
- *
- * This function issues SD command READ_MULTIPLE_BLOCK: Reads blocks of data
- * from card continuously until a STOP_TRANSMISSION command.
- *
- * Class: 2 (block-oriented read commands)
- *
- * State Transition:
- * transfer -> sending-data
- *
- * Argument:
- * [31:0] data address (byte-unit for SD, block unit for SDHC)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd18(uint32_t addr, SD_R32 * csr) {
- #if 0
- uint32_t retry = 0;
- while (retry++ < SD_STATE_MAX_RETRY_COUNT) {
- #endif
- /* Send SD command */
- uint32_t status =
- _sd_cmd_arg_r32(SDC_CMD18_READ_MULTIPLE_BLOCK, addr,
- csr);
- if (status != HAL_SUCCESS) {
- return status;
- }
- /* Check error status */
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- #if 0
- /* Check whether make transition to sending-data state */
- switch (SD_CSR_GET_CURRENT_STATE(*csr)) {
- case SD_STATE_DATA:
- /* The card is ready to send out data */
- return HAL_SUCCESS;
- case SD_STATE_TRAN:
- /* Repeat previous command until the card get to the state */
- break;
- case SD_STATE_STBY:
- case SD_STATE_RCV:
- case SD_STATE_PRG:
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_DIS:
- default:
- /* Invalid current state before deselecting the card. */
- return SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- #else
- return HAL_SUCCESS;
- #endif
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd24
- *
- * DESCRIPTION
- *
- * This function issues SD command WRITE_SINGLE_BLOCK: Writes a single
- * block size of data.
- *
- * Class: 2 (block-oriented write commands)
- *
- * State Transition:
- * transfer -> receiving-data
- *
- * Argument:
- * [31:0] data address (byte-unit for SD, block unit for SDHC)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd24(uint32_t addr, SD_R32 * csr) {
- #if 0
- uint32_t retry = 0;
- while (retry++ < SD_STATE_MAX_RETRY_COUNT) {
- #endif
- /* Send SD command */
- uint32_t status = _sd_cmd_arg_r32(SDC_CMD24_WRITE_BLOCK, addr, csr);
- if (status != HAL_SUCCESS)
- return status;
- /* Check error status */
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- #if 0
- /* Check whether make transition to sending-data state */
- switch (SD_CSR_GET_CURRENT_STATE(*csr)) {
- case SD_STATE_RCV:
- /* The card is ready to send out data */
- return HAL_SUCCESS;
- case SD_STATE_TRAN:
- /* Repeat previous command until the card get to the state */
- break;
- case SD_STATE_STBY:
- case SD_STATE_DATA:
- case SD_STATE_PRG:
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_DIS:
- default:
- /* Invalid current state before deselecting the card. */
- return SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- #else
- return HAL_SUCCESS;
- #endif
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd25
- *
- * DESCRIPTION
- *
- * This function issues SD command WRITE_MULTIPLE_BLOCK: Writes blocks of
- * data to the card continuously until a STOP_TRANSMISSION command.
- *
- * Class: 2 (block-oriented write commands)
- *
- * State Transition:
- * transfer -> receiving-data
- *
- * Argument:
- * [31:0] data address (byte-unit for SD, block unit for SDHC)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd25(uint32_t addr, SD_R32 * csr) {
- #if 0
- uint32_t retry = 0;
- while (retry++ < SD_STATE_MAX_RETRY_COUNT) {
- #endif
- /* Send SD command */
- uint32_t status = _sd_cmd_arg_r32 (SDC_CMD25_WRITE_MULTIPLE_BLOCK, addr, csr);
- if (status != HAL_SUCCESS)
- return status;
- /* Check error status */
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- #if 0
- /* Check whether make transition to sending-data state */
- switch (SD_CSR_GET_CURRENT_STATE(*csr)) {
- case SD_STATE_RCV:
- /* The card is ready to send out data */
- return HAL_SUCCESS;
- case SD_STATE_TRAN:
- /* Repeat previous command until the card get to the state */
- break;
- case SD_STATE_STBY:
- case SD_STATE_DATA:
- case SD_STATE_PRG:
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_DIS:
- default:
- /* Invalid current state before deselecting the card. */
- return SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- #else
- return HAL_SUCCESS;
- #endif
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd27
- *
- * DESCRIPTION
- *
- * This function issues SD command PROGRAM_CSD: Programming the
- * programmable bits of the CSD (using DATx lines).
- *
- * Class: 2 (block-oriented write commands)
- *
- * State Transition:
- * transfer -> receiving-data
- *
- * Argument:
- * [31:0] stufing bits
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd27(SD_R32 * csr) {
- uint32_t status = _sd_cmd_r32(SDC_CMD27_PROGRAM_CSD, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd28
- *
- * DESCRIPTION
- *
- * This function issues SD command SET_WRITE_PROT: Sets the write protection
- * bits of the addressed group, if supported. (Not supported in SDHC)
- *
- * Class: 6 (block-oriented write protection commands)
- *
- * State Transition:
- * transfer -> programming
- *
- * Argument:
- * [31:0] data address (byte unit)
- *
- * Response:
- * R1b [39:8] card status
- * DAT0 busy signal
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd28(uint32_t addr, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_CMD28_SET_WRITE_PROT, addr, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd29
- *
- * DESCRIPTION
- *
- * This function issues SD command CLR_WRITE_PROT: Clears the write
- * protection bits of the addressed group, if supported.
- * (Not supported in SDHC)
- *
- * Class: 6 (block-oriented write protection commands)
- *
- * State Transition:
- * transfer -> programming
- *
- * Argument:
- * [31:0] data address (byte unit)
- *
- * Response:
- * R1b [39:8] card status
- * DAT0 busy signal
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd29(uint32_t addr, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_CMD29_CLR_WRITE_PROT, addr, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd30
- *
- * DESCRIPTION
- *
- * This function issues SD command SEND_WRITE_PROT: Ask the card to send
- * the status of the protection bits of the addressed group, if supported.
- * (Not supported in SDHC)
- *
- * Class: 6 (block-oriented write protection commands)
- *
- * State Transition:
- * transfer -> receiving-data
- *
- * Argument:
- * [31:0] data address (byte unit)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd30(uint32_t addr, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_CMD30_SEND_WRITE_PROT, addr, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd32
- *
- * DESCRIPTION
- *
- * This function issues SD command ERASE_WR_BLK_START: Sets the address of
- * the first write block to be erased.
- *
- * Class: 5 (erase commands)
- *
- * State Transition:
- * transfer -> transfer
- *
- * Argument:
- * [31:0] data address (SD: byte unit, SDHC: block unit)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd32(uint32_t addr, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_CMD32_ERASE_WR_BLK_START, addr, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd33
- *
- * DESCRIPTION
- *
- * This function issues SD command ERASE_WR_BLK_END: Sets the address of
- * the last write block of a continuous range to be erased.
- *
- * Class: 5 (erase commands)
- *
- * State Transition:
- * transfer -> transfer
- *
- * Argument:
- * [31:0] data address (SD: byte unit, SDHC: block unit)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd33(uint32_t addr, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_CMD33_ERASE_WR_BLK_END, addr, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd38
- *
- * DESCRIPTION
- *
- * This function issues SD command ERASE: Erase all previously selected
- * write blocks.
- *
- * Class: 5 (erase commands)
- *
- * State Transition:
- * transfer -> programming
- *
- * Argument:
- * [31:0] stuff bits
- *
- * Response:
- * R1 [39:8] card status
- * DAT0 busy signal
- *
- * INPUTS
- *
- * addr : uint32_t address value.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd38(SD_R32 * csr) {
- uint32_t status = _sd_cmd_r32(SDC_CMD38_ERASE, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd42
- *
- * DESCRIPTION
- *
- * This function issues SD command LOCK_UNLOCK: Set/reset the password or
- * lock/unlock the card.
- *
- * Class: 7 (lock card)
- *
- * State Transition:
- * transfer -> receiving-data
- *
- * Argument:
- * [31:0] should be all 0!
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd42(SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_CMD42_LOCK_UNLOCK, 0, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd55
- *
- * DESCRIPTION
- *
- * This function issues SD command APP_CMD: Indicates the next command is
- * an application specific command.
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * idle -> idle
- * standby -> standby
- * transfer -> transfer
- * sending-data -> sending-data
- * receiving-data -> receiving-data
- * programming -> programming
- * disconnected -> disconnected
- *
- * Argument:
- * [31:16] RCA
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_cmd55(uint32_t rca, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32(SDC_CMD55_APP_CMD, rca, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd56
- *
- * DESCRIPTION
- *
- * This function issues SD command GEN_CMD: To transfer data block from/to
- * the card for general-purpose/application-specific commands.
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * RD/WR = 0 (write)
- * transfer -> receiving-data
- * RD/WR = 1 (read)
- * transfer -> sending-data
- *
- * Argument:
- * [31: 1] stuff bits
- * [0] RD/WR
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * rdwr : uint32_t value where bit [0] is RD/WR.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd56(uint32_t rdwr, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32(SDC_CMD56_GEN_CMD, rdwr, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_acmd6
- *
- * DESCRIPTION
- *
- * This function issues SD command SET_BUS_WIDTH: Defines the data bus
- * width to be used for data transfer. The allowed bus widths are given
- * in the SCR register.
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * transfer -> transfer
- *
- * Argument:
- * [31:2] stuff bits
- * [ 1:0] bus width (00b -> 1bit, 10b -> 4bits)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * bw : uint32_t value where bit [1:0] is bus width.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_acmd6(uint32_t bw, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_ACMD6_SET_BUS_WIDTH, bw, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_acmd13
- *
- * DESCRIPTION
- *
- * This function issues SD command SD_STATUS: Send the SD status.
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * transfer -> sending-data
- *
- * Argument:
- * [31:0] stuff bits
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_acmd13(SD_R32 * csr) {
- uint32_t status = _sd_cmd_r32(SDC_ACMD13_SD_STATUS, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_acmd22
- *
- * DESCRIPTION
- *
- * This function issues SD command SEND_NUM_WR_BLOCKS: Send the number of
- * non-error write blocks.
- *
- * If (WRITE_BL_PARTIAL == 0)
- * unit of ACMD22 is 512 bytes
- * else
- * unit of ACMD22 is a block length of write command
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * transfer -> sending-data
- *
- * Argument:
- * [31:0] stuff bits
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_acmd22(SD_R32 * csr) {
- uint32_t status = _sd_cmd_r32 (SDC_ACMD22_SEND_NUM_WR_BLOCKS, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_acmd23
- *
- * DESCRIPTION
- *
- * This function issues SD command SET_WR_BLK_ERASE_COUNT: Send the number
- * of write blocks to be pre-erased before writing (for faster multiple-
- * block-WR command). Default is 1.
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * transfer -> transfer
- *
- * Argument:
- * [31:23] stuff bits
- * [22: 0] number of blocks
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * blocks : uint32_t value represents the number of blocks.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_acmd23(uint32_t blocks, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_ACMD23_SET_WR_BLK_ERASE_COUNT, blocks, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_acmd41
- *
- * DESCRIPTION
- *
- * This function issues SD command SD_SEND_OP_COND: Send HCS and get OCR
- * during the initialization and identification process.
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * idle -> ready (OCR check OK and card is not busy)
- * idle -> idle (OCR check OK and card is busy)
- * idle -> inactive (OCR check fails)
- * idle -> idle (query mode)
- *
- * Argument:
- * [30] HCS (OCR[32])
- * [23:0] Vdd voltage window (OCR[23:0])
- *
- * Response:
- * R3 [39:8] OCR
- *
- * INPUTS
- *
- * hcs : uint32_t value represents the host capacity support information.
- * ocr : Pointer to SD_OCR struct.
- *
- * OUTPUTS
- *
- * ocr : SD_OCR struct which holds the R3/OCR response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_acmd41(uint32_t hcs, SD_OCR * ocr) {
- return _sd_cmd_arg_r32 (SDC_ACMD41_SD_SEND_OP_COND, hcs, ocr);
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_acmd42
- *
- * DESCRIPTION
- *
- * This function issues SD command SET_CLR_CARD_DETECT: Connect/Disconnect
- * the 50 KOmh pull-up resister on CD/DAT3 (pin1) of the card.
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * transfer -> transfer
- *
- * Argument:
- * [0] set_cd (1: connect, 0: disconnect)
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * conn : uint32_t value where [0] denotes set_cd.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_acmd42(uint32_t conn, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_ACMD42_SET_CLR_CARD_DETECT, conn, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_acmd51
- *
- * DESCRIPTION
- *
- * This function issues SD command SEND_SCR: Reads the SD configuration
- * register (SCR).
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * transfer -> sending-data
- *
- * Argument:
- * [31:0] stuff bits
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_acmd51(SD_R32 * csr) {
- uint32_t status = _sd_cmd_r32(SDC_ACMD51_SEND_SCR, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_cmd6
- *
- * DESCRIPTION
- *
- * This function issues SD command SWITCH_FUNC: Check switchable function
- * or switch card function.
- *
- * Class: 8 (application-specific commands)
- *
- * State Transition:
- * transfer -> sending-data
- *
- * Argument:
- * [31] mode (0: check, 1: switch)
- * [30:24] should be 0
- * [23:20] 00h or 0fh (reserved for function group 6)
- * [19:16] 00h or 0fh (reserved for function group 5)
- * [15:12] 00h or 0fh (reserved for function group 4)
- * [11: 8] 00h or 0fh (reserved for function group 3)
- * [ 7: 4] function group 2 for command system
- * [ 3: 0] function group 1 for access mode
- *
- * Response:
- * R1 [39:8] card status
- *
- * INPUTS
- *
- * mode : uint32_t value which holds the function mode.
- * csr : Pointer to SD_R32 struct.
- *
- * OUTPUTS
- *
- * csr : SD_R32 struct which holds the R1 response.
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- #if (SDD_SMALL_SD_FOOTPRINT == 0)
- uint32_t _sd_cmd6(uint32_t mode, SD_R32 * csr) {
- uint32_t status = _sd_cmd_arg_r32 (SDC_CMD6_SWITCH_FUNC, mode, csr);
- if (status != HAL_SUCCESS)
- return status;
- if (SD_CSR_CHECK_ERROR_BITS(*csr))
- return SDD_CSR_ERROR;
- return HAL_SUCCESS;
- }
- #endif /* (SDD_SMALL_SD_FOOTPRINT == 0) */
- #if 0
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_wait_sending_state
- *
- * DESCRIPTION
- *
- * This function waits the transfer state make transition to the sending-
- * data state. This is equivalent to waiting for the card start to send
- * out data after cmd17 or cmd18.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_wait_sending_state(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- uint32_t retry = 0;
- while (retry++ <
- SD_TRANSFER_MAX_RETRY_COUNT) {
- /* Get current state */
- status =
- _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- switch (SD_CSR_GET_CURRENT_STATE
- (sd_rsp32)) {
- case SD_STATE_DATA:
- return HAL_SUCCESS;
- case SD_STATE_TRAN:
- break;
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_STBY:
- case SD_STATE_RCV:
- case SD_STATE_DIS:
- case SD_STATE_PRG:
- default:
- return
- SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_wait_receiving_state
- *
- * DESCRIPTION
- *
- * This function waits the transfer state make transition to the receiving-
- * data state. This is equivalent to waiting for the card start to receive
- * data after cmd24/25/27/42/56.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_wait_receiving_state(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- uint32_t retry = 0;
- while (retry++ <
- SD_TRANSFER_MAX_RETRY_COUNT) {
- /* Get current state */
- status =
- _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- switch (SD_CSR_GET_CURRENT_STATE
- (sd_rsp32)) {
- case SD_STATE_RCV:
- if (SD_CSR_GET_READY_FOR_DATA(sd_rsp32))
- return
- HAL_SUCCESS;
- break;
- case SD_STATE_TRAN:
- break;
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_STBY:
- case SD_STATE_DATA:
- case SD_STATE_DIS:
- case SD_STATE_PRG:
- default:
- return
- SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
- #endif /* 0 */
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_wait_programmed
- *
- * DESCRIPTION
- *
- * This function waits the disconnected state make transition to the
- * standby state or the transfer state. This is equivalent to waiting for
- * the completion of programming.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_wait_programmed(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- uint32_t retry = 0;
- while (retry++ < SD_TRANSFER_MAX_RETRY_COUNT) {
- /* Get current state */
- status = _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- switch (SD_CSR_GET_CURRENT_STATE
- (sd_rsp32)) {
- case SD_STATE_STBY:
- case SD_STATE_TRAN:
- return HAL_SUCCESS;
- case SD_STATE_DIS:
- case SD_STATE_PRG:
- break;
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_DATA:
- case SD_STATE_RCV:
- default:
- return
- SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_wait_transferred
- *
- * DESCRIPTION
- *
- * This function waits the data/rcv/prog state make transition to the
- * transfer state. This is equivalent to waiting for the
- * completion of all current data transfer traffic.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_wait_transferred(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- uint32_t retry = 0;
- while (retry++ < SD_TRANSFER_MAX_RETRY_COUNT) {
- /* Get current state */
- status = _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- switch (SD_CSR_GET_CURRENT_STATE (sd_rsp32)) {
- case SD_STATE_TRAN:
- return HAL_SUCCESS;
- case SD_STATE_DATA:
- case SD_STATE_RCV:
- case SD_STATE_PRG:
- break;
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_STBY:
- case SD_STATE_DIS:
- default:
- return
- SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_disconnect
- *
- * DESCRIPTION
- *
- * This function forces the prog state make transition to the
- * disconnect state.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_disconnect(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- uint32_t retry = 0;
- while (retry++ < SD_STATE_MAX_RETRY_COUNT) {
- /* Get current state */
- status = _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- /* Perform state transition according to spec 2.0 fig 4-3. */
- switch (SD_CSR_GET_CURRENT_STATE (sd_rsp32)) {
- case SD_STATE_STBY:
- case SD_STATE_DIS:
- /* The card with the target rca is already disconnected. Just */
- /* return that the card is disconnected successfully. */
- return HAL_SUCCESS;
- case SD_STATE_PRG:
- /* Try to enter disconnected state ... */
- status = _sd_cmd7(rca, &sd_rsp32); /* disconnect the card */
- if (status != HAL_SUCCESS)
- return status;
- break;
- case SD_STATE_TRAN:
- case SD_STATE_DATA:
- case SD_STATE_RCV:
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- default:
- /* Invalid current state before disconnect the card. */
- return
- SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_connect
- *
- * DESCRIPTION
- *
- * This function forces the disconnect state make transition to the
- * programming state.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_connect(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- uint32_t retry = 0;
- while (retry++ < SD_STATE_MAX_RETRY_COUNT) {
- /* Get current state */
- status = _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- /* Perform state transition according to spec 2.0 fig 4-3. */
- switch (SD_CSR_GET_CURRENT_STATE (sd_rsp32)) {
- case SD_STATE_PRG:
- case SD_STATE_TRAN:
- /*
- * The card with the target rca is already connected. Just
- * return that the card is connected successfully.
- */
- return HAL_SUCCESS;
- case SD_STATE_DIS:
- /* Try to enter programming state ... */
- status = _sd_cmd7(rca, &sd_rsp32); /* connect the card */
- if (status != HAL_SUCCESS)
- return status;
- break;
- case SD_STATE_STBY:
- case SD_STATE_DATA:
- case SD_STATE_RCV:
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- default:
- /* Invalid current state before connect the card. */
- return
- SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_deselect_card
- *
- * DESCRIPTION
- *
- * This function forces the transfer state make transition to the
- * standby state.
- *
- * If the card is currently in data or transfer state, the function will
- * issue trnasition command and continue loop until the card enters standby
- * state.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_deselect_card(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- uint32_t retry = 0;
- while (retry++ < SD_STATE_MAX_RETRY_COUNT) {
- /* Get current state */
- status = _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- /* Perform state transition according to spec 2.0 fig 4-3. */
- switch (SD_CSR_GET_CURRENT_STATE (sd_rsp32)) {
- case SD_STATE_STBY:
- /*
- * The card with the target rca is already deselected. Just
- * return that the card is deselected successfully.
- */
- return HAL_SUCCESS;
- case SD_STATE_TRAN:
- case SD_STATE_DATA:
- /* Try to enter standby state ... */
- status = _sd_cmd7(rca, &sd_rsp32); /* deselect the card */
- if (status != HAL_SUCCESS)
- return status;
- break;
- case SD_STATE_RCV:
- case SD_STATE_PRG:
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_DIS:
- default:
- /* Invalid current state before deselecting the card. */
- return
- SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_select_card
- *
- * DESCRIPTION
- *
- * This function forces the standby state make transition to the
- * transfer state.
- *
- * If the card is currently in data/rcv state, the function will wait for
- * a limitted time. After timeout, it forces to stop the current
- * operation and try to make transition back to standby state.
- *
- * If the card is currently in the prog state, the function will wait for
- * a limitted time. If timeout then it will return that failed to make
- * the desired state transition.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_select_card(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- uint32_t retry = 0;
- while (retry++ < SD_STATE_MAX_RETRY_COUNT) {
- /* Get current state */
- status = _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- /* Perform state transition according to spec 2.0 fig 4-3. */
- switch (SD_CSR_GET_CURRENT_STATE (sd_rsp32)) {
- case SD_STATE_TRAN:
- /*
- * The card with the target rca is already selected. Just
- * return that the card is selected successfully.
- */
- return HAL_SUCCESS;
- case SD_STATE_STBY:
- /* Try to enter transfer state ... */
- status = _sd_cmd7(rca, &sd_rsp32); /* select the card */
- if (status != HAL_SUCCESS)
- return status;
- break;
- case SD_STATE_DATA:
- case SD_STATE_RCV:
- /*
- * The card is still transferring data or programming.
- * Wait a short period for transfer completion. The
- * card will back to transfer state after operation
- * completion.
- */
- status = _sd_wait_transferred (rca);
- if (status == HAL_SUCCESS) {
- return HAL_SUCCESS;
- }
- else if (status == SDD_WAIT_TIMEOUT)
- {
- /*
- * Stop the current transmission after waiting timeout. Then
- * continue status check loop to fall back to transfer state.
- */
- status = _sd_cmd12(&sd_rsp32); /* stop transmission */
- if (status != HAL_SUCCESS)
- return status;
- }
- else {
- return status;
- }
- break;
- case SD_STATE_PRG:
- status = _sd_wait_transferred (rca);
- if (status != HAL_SUCCESS)
- return status;
- break;
- case SD_STATE_DIS:
- /* Continue status check loop to fall back to standby state. */
- break;
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- default:
- /* Invalid current state before selecting the card. */
- return SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
- /*****************************************************************************
- * FUNCTION
- *
- * _sd_stop_transmission
- *
- * DESCRIPTION
- *
- * This function forces the data/rcv/prog state make transition to the
- * transfer state.
- *
- * If the card is currently in data/rcv state, the function will issue
- * stop command directly. Then continue check loop to wait for back to
- * the transfer or standby state.
- *
- * If the card is currently in the prog state, the function will wait for
- * a limitted time. If timeout then it will return that failed to make
- * the desired state transition.
- *
- * INPUTS
- *
- * rca : uint32_t value where RCA is at [31:16].
- *
- * OUTPUTS
- *
- * uint32_t : Returns HAL_SUCCESS if successful,
- * else positive value is SDD-specific error code,
- * else negative value is NU system error code.
- *
- ****************************************************************************/
- uint32_t _sd_stop_transmission(uint32_t rca) {
- uint32_t status;
- SD_R32 sd_rsp32;
- while (1) {
- // _nds_kwait(0x1000);
- /* Get current state */
- status = _sd_cmd13(rca, &sd_rsp32);
- if (status != HAL_SUCCESS)
- return status;
- /* Perform state transition according to spec 2.0 fig 4-3. */
- switch (SD_CSR_GET_CURRENT_STATE (sd_rsp32)) {
- case SD_STATE_STBY:
- case SD_STATE_TRAN:
- /* The card with the target rca is already stopped. Just */
- /* return that the card is stopped successfully. */
- return HAL_SUCCESS;
- case SD_STATE_DATA:
- case SD_STATE_RCV:
- /* Try to back to transfer state ... */
- status = _sd_cmd12(&sd_rsp32); /* stop transmission */
- if (status != HAL_SUCCESS)
- return status;
- break;
- case SD_STATE_PRG:
- /* The card is still transferring data or programming. */
- /* Wait a short period for transfer completion. The */
- /* card will back to transfer state after operation */
- /* completion. */
- status = _sd_wait_transferred (rca);
- if (status != HAL_SUCCESS)
- return status;
- break;
- case SD_STATE_IDLE:
- case SD_STATE_READY:
- case SD_STATE_IDENT:
- case SD_STATE_DIS:
- default:
- /* Invalid current state before selecting the card. */
- return SDD_INVALID_STATE;
- }
- }
- return SDD_WAIT_TIMEOUT;
- }
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