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@ -1,5 +1,8 @@
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#include STM32_HAL_H
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#include <string.h>
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#include "flash.h"
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int flash_init(void)
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{
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return 0;
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@ -39,12 +42,26 @@ void flash_set_option_bytes(void)
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}
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}
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int flash_erase_sectors(int start, int end, void (*progress)(uint16_t val))
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bool flash_unlock(void)
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{
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HAL_FLASH_Unlock();
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FLASH_EraseInitTypeDef EraseInitStruct;
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |
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FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
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return true;
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}
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bool flash_lock(void)
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{
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HAL_FLASH_Lock();
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return true;
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}
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bool flash_erase_sectors(int start, int end, void (*progress)(uint16_t val))
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{
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if (!flash_unlock()) {
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return false;
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}
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FLASH_EraseInitTypeDef EraseInitStruct;
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EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
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EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
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EraseInitStruct.NbSectors = 1;
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@ -52,13 +69,65 @@ int flash_erase_sectors(int start, int end, void (*progress)(uint16_t val))
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for (int i = start; i <= end; i++) {
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EraseInitStruct.Sector = i;
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if (HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK) {
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HAL_FLASH_Lock();
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return 0;
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flash_lock();
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return false;
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}
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if (progress) {
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progress(1000 * (i - start + 1) / (end - start + 1));
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}
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}
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HAL_FLASH_Lock();
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return 1;
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flash_lock();
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return true;
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}
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#define FLASH_OTP_LOCK_BASE 0x1FFF7A00U
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#define FLASH_OTP_NUM_BLOCKS 16
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#define FLASH_OTP_BLOCK_SIZE 32
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bool flash_otp_write(uint8_t block, uint8_t offset, const uint8_t *data, uint8_t datalen)
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{
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if (block >= FLASH_OTP_NUM_BLOCKS || offset + datalen > FLASH_OTP_BLOCK_SIZE) {
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return false;
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}
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if (!flash_unlock()) {
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return false;
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}
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HAL_StatusTypeDef ret;
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for (uint8_t i = 0; i < datalen; i++) {
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ret = HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, FLASH_OTP_BASE + block * FLASH_OTP_BLOCK_SIZE + offset + i, data[i]);
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if (ret != HAL_OK) {
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break;
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}
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}
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flash_lock();
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return ret == HAL_OK;
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}
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bool flash_otp_read(uint8_t block, uint8_t offset, uint8_t *data, uint8_t datalen)
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{
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if (block >= FLASH_OTP_NUM_BLOCKS || offset + datalen > FLASH_OTP_BLOCK_SIZE) {
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return false;
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}
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for (uint8_t i = 0; i < datalen; i++) {
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data[i] = *(__IO uint8_t *)(FLASH_OTP_BASE + block * FLASH_OTP_BLOCK_SIZE + offset + i);
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}
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return true;
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}
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bool flash_otp_lock(uint8_t block)
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{
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if (block >= FLASH_OTP_NUM_BLOCKS) {
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return false;
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}
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if (!flash_unlock()) {
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return false;
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}
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HAL_StatusTypeDef ret = HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, FLASH_OTP_LOCK_BASE + block, 0x00);
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flash_lock();
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return ret == HAL_OK;
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}
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bool flash_otp_is_locked(uint8_t block)
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{
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return *(__IO uint8_t *)(FLASH_OTP_LOCK_BASE + block) == 0x00;
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}
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