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+/*
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+ * Copyright (c) 2006-2018, RT-Thread Development Team
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+ *
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+ * SPDX-License-Identifier: Apache-2.0
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+ *
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+ * Change Logs:
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+ * Date Author Notes
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+ * 2018-12-5 SummerGift first version
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+ * 2019-3-2 jinsheng add Macro judgment
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+ * 2020-1-6 duminmin support single bank mode
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+ * 2020-5-17 yufanyufan77 support support H7
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+ */
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+
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+#include "board.h"
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+
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+#ifdef BSP_USING_ON_CHIP_FLASH
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+#include "drv_config.h"
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+#include "drv_flash.h"
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+
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+#if defined(PKG_USING_FAL)
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+#include "fal.h"
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+#endif
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+
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+//#define DRV_DEBUG
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+#define LOG_TAG "drv.flash"
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+#include <drv_log.h>
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+#define ADDR_FLASH_SECTOR_0 ((rt_uint32_t)0x08000000) /* Base address of Sector 0, 128 Kbytes */
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+#define ADDR_FLASH_SECTOR_1 ((rt_uint32_t)0x08020000) /* Base address of Sector 1, 128 Kbytes */
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+#define ADDR_FLASH_SECTOR_2 ((rt_uint32_t)0x08040000) /* Base address of Sector 2, 128 Kbytes */
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+#define ADDR_FLASH_SECTOR_3 ((rt_uint32_t)0x08060000) /* Base address of Sector 3, 128 Kbytes */
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+#define ADDR_FLASH_SECTOR_4 ((rt_uint32_t)0x08080000) /* Base address of Sector 4, 128 Kbytes */
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+#define ADDR_FLASH_SECTOR_5 ((rt_uint32_t)0x080A0000) /* Base address of Sector 5, 128 Kbytes */
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+#define ADDR_FLASH_SECTOR_6 ((rt_uint32_t)0x080C0000) /* Base address of Sector 6, 128 Kbytes */
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+#define ADDR_FLASH_SECTOR_7 ((rt_uint32_t)0x080E0000) /* Base address of Sector 7, 128 Kbytes */
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+#define ADDR_FLASH_SECTOR_8 ((rt_uint32_t)0x08100000) /* Base address of Sector 8, 128 Kbytes */
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+
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+
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+
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+#define FLASH_SECTOR_0 0U /* Sector Number 0 */
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+#define FLASH_SECTOR_1 1U /* Sector Number 1 */
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+#define FLASH_SECTOR_2 2U /* Sector Number 2 */
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+#define FLASH_SECTOR_3 3U /* Sector Number 3 */
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+#define FLASH_SECTOR_4 4U /* Sector Number 4 */
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+#define FLASH_SECTOR_5 5U /* Sector Number 5 */
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+#define FLASH_SECTOR_6 6U /* Sector Number 6 */
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+#define FLASH_SECTOR_7 7U /* Sector Number 7 */
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+/**
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+ * @brief Gets the sector of a given address
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+ * @param addr flash address
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+ * @param flash bank
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+ * @param flash sector
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+ * @retval The sector of a given address
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+ */
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+static void GetSector(rt_uint32_t Address,uint32_t* bank,uint32_t* sector)
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+{
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+
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+#if defined (FLASH_OPTCR_nDBANK)
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+ FLASH_OBProgramInitTypeDef OBInit;
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+ uint32_t nbank = 0;
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+
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+ //get duel bank ability:nDBANK(Bit29)
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+ HAL_FLASHEx_OBGetConfig(&OBInit);
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+ nbank = ((OBInit.USERConfig & 0x20000000U) >> 29);
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+ //1:single bank mode
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+ if (1 == nbank)
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+ {
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+ if ((Address < ADDR_FLASH_SECTOR_1) && (Address >= ADDR_FLASH_SECTOR_0))
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+ {
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+ sector = FLASH_SECTOR_0;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_2) && (Address >= ADDR_FLASH_SECTOR_1))
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+ {
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+ sector = FLASH_SECTOR_1;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_3) && (Address >= ADDR_FLASH_SECTOR_2))
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+ {
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+ sector = FLASH_SECTOR_2;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_4) && (Address >= ADDR_FLASH_SECTOR_3))
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+ {
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+ sector = FLASH_SECTOR_3;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_5) && (Address >= ADDR_FLASH_SECTOR_4))
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+ {
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+ sector = FLASH_SECTOR_4;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_6) && (Address >= ADDR_FLASH_SECTOR_5))
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+ {
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+ sector = FLASH_SECTOR_5;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_7) && (Address >= ADDR_FLASH_SECTOR_6))
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+ {
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+ sector = FLASH_SECTOR_6;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_8) && (Address >= ADDR_FLASH_SECTOR_7))
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+ {
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+ sector = FLASH_SECTOR_7;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_9) && (Address >= ADDR_FLASH_SECTOR_8))
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+ {
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+ sector = FLASH_SECTOR_8;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_10) && (Address >= ADDR_FLASH_SECTOR_9))
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+ {
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+ sector = FLASH_SECTOR_9;
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+ }
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+ else if ((Address < ADDR_FLASH_SECTOR_11) && (Address >= ADDR_FLASH_SECTOR_10))
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+ {
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+ sector = FLASH_SECTOR_10;
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+ }
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+ else
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+ {
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+ sector = FLASH_SECTOR_11;
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+ }
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+ }
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+ else //0:dual bank mode
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+ {
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+ LOG_E("rtthread doesn't support duel bank mode yet!");
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+ RT_ASSERT(0);
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+ }
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+#else //no dual bank ability
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+ *sector = (Address&0xffffff)/FLASH_SIZE_GRANULARITY_128K;
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+ if(*sector>7)
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+ {
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+ *bank = FLASH_BANK_1;
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+ *sector = *sector/2;
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+ }
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+ else
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+ *bank = FLASH_BANK_2;
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+
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+#endif
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+}
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+
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+
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+/**
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+ * Read data from flash.
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+ * @note This operation's units is word.
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+ *
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+ * @param addr flash address
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+ * @param buf buffer to store read data
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+ * @param size read bytes size
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+ *
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+ * @return result
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+ */
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+int stm32_flash_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size)
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+{
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+ size_t i;
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+
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+ if ((addr + size) > STM32_FLASH_END_ADDRESS)
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+ {
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+ LOG_E("read outrange flash size! addr is (0x%p)", (void *)(addr + size));
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+ return -1;
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+ }
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+
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+ for (i = 0; i < size; i++, buf++, addr++)
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+ {
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+ *buf = *(rt_uint8_t *) addr;
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+ }
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+
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+ return size;
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+}
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+
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+/**
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+ * Write data to flash.
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+ * @note This operation's units is word.
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+ * @note This operation must after erase. @see flash_erase.
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+ *
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+ * @param addr flash address
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+ * @param buf the write data buffer
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+ * @param size write bytes size
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+ *
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+ * @return result
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+ */
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+int stm32_flash_write(rt_uint32_t addr, const rt_uint8_t *buf, size_t size)
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+{
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+ rt_err_t result = RT_EOK;
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+ rt_uint32_t end_addr = addr + size;
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+ rt_uint32_t bank = addr/ADDR_FLASH_SECTOR_8;;
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+
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+ if ((end_addr) > STM32_FLASH_END_ADDRESS)
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+ {
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+ LOG_E("write outrange flash size! addr is (0x%p)", (void *)(addr + size));
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+ return -RT_EINVAL;
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+ }
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+
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+ if (size < 1)
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+ {
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+ return -RT_EINVAL;
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+ }
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+
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+ /* Unlock the Flash to enable the flash control register access */
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+ HAL_FLASH_Unlock();
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+ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR );
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+
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+ for (size_t i = 0; i < size/32; i++, addr+=32, buf+=32)
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+ {
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+ /* write data to flash */
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+ if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD, addr, (uint64_t)((uint32_t)buf)) == HAL_OK)
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+ {
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+ if (*(rt_uint8_t *)addr != *buf)
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+ {
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+ result = -RT_ERROR;
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+ break;
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+ }
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+ }
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+ else
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+ {
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+ result = -RT_ERROR;
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+ break;
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+ }
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+ }
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+
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+ HAL_FLASH_Lock();
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+
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+ if (result != RT_EOK)
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+ {
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+ return result;
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+ }
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+
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+ return size;
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+}
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+
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+/**
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+ * Erase data on flash.
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+ * @note This operation is irreversible.
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+ * @note This operation's units is different which on many chips.
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+ *
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+ * @param addr flash address
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+ * @param size erase bytes size
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+ *
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+ * @return result
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+ */
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+int stm32_flash_erase(rt_uint32_t addr, size_t size)
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+{
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+ rt_err_t result = RT_EOK;
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+ rt_uint32_t FirstSector = 0, NbOfSectors = 0;
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+ rt_uint32_t SECTORError = 0;
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+ rt_uint32_t bank = 0;
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+
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+ if ((addr + size) > STM32_FLASH_END_ADDRESS)
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+ {
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+ LOG_E("ERROR: erase outrange flash size! addr is (0x%p)\n", (void *)(addr + size));
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+ return -RT_EINVAL;
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+ }
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+
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+ /*Variable used for Erase procedure*/
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+ FLASH_EraseInitTypeDef EraseInitStruct;
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+
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+ /* Unlock the Flash to enable the flash control register access */
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+ HAL_FLASH_Unlock();
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+
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+ /* Get the 1st sector to erase */
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+ GetSector(addr,&bank,&FirstSector);
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+ /* Get the number of sector to erase from 1st sector*/
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+ GetSector(addr + size,0,&NbOfSectors);
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+ NbOfSectors = NbOfSectors - FirstSector + 1;
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+ /* Fill EraseInit structure*/
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+ EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
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+ EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
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+ EraseInitStruct.Sector = FirstSector;
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+ EraseInitStruct.NbSectors = NbOfSectors;
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+ EraseInitStruct.Banks = bank;
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+
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+ if (HAL_FLASHEx_Erase(&EraseInitStruct, &SECTORError) != HAL_OK)
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+ {
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+ result = -RT_ERROR;
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+ goto __exit;
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+ }
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+
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+__exit:
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+
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+ HAL_FLASH_Lock();
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+
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+ if (result != RT_EOK)
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+ {
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+ return result;
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+ }
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+
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+ LOG_D("erase done: addr (0x%p), size %d", (void *)addr, size);
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+ return size;
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+}
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+
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+#if defined(PKG_USING_FAL)
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+
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+
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+static int fal_flash_read_128k(long offset, rt_uint8_t *buf, size_t size);
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+
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+static int fal_flash_write_128k(long offset, const rt_uint8_t *buf, size_t size);
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+
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+static int fal_flash_erase_128k(long offset, size_t size);
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+
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+const struct fal_flash_dev stm32_onchip_flash_128k = { "onchip_flash_128k", STM32_FLASH_START_ADRESS, FLASH_SIZE_GRANULARITY_128K, (128 * 1024), {NULL, fal_flash_read_128k, fal_flash_write_128k, fal_flash_erase_128k} };
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+
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+static int fal_flash_read_128k(long offset, rt_uint8_t *buf, size_t size)
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+{
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+ return stm32_flash_read(stm32_onchip_flash_128k.addr + offset, buf, size);
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+}
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+static int fal_flash_write_128k(long offset, const rt_uint8_t *buf, size_t size)
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+{
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+ return stm32_flash_write(stm32_onchip_flash_128k.addr + offset, buf, size);
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+}
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+
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+static int fal_flash_erase_128k(long offset, size_t size)
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+{
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+ return stm32_flash_erase(stm32_onchip_flash_128k.addr + offset, size);
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+}
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+
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+#endif
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+#endif /* BSP_USING_ON_CHIP_FLASH */
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