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143 lines
3.5 KiB
143 lines
3.5 KiB
#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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}
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#define WANTED_WRP (OB_WRP_SECTOR_0 | OB_WRP_SECTOR_1)
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#define WANTED_RDP (OB_RDP_LEVEL_2)
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#define WANTED_BOR (OB_BOR_LEVEL3)
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void flash_set_option_bytes(void)
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{
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FLASH_OBProgramInitTypeDef opts;
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HAL_FLASHEx_OBGetConfig(&opts);
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opts.OptionType = 0;
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if (opts.WRPSector != WANTED_WRP) {
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opts.OptionType = OPTIONBYTE_WRP;
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opts.WRPState = OB_WRPSTATE_ENABLE;
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opts.WRPSector = WANTED_WRP;
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opts.Banks = FLASH_BANK_1;
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}
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if (opts.RDPLevel != WANTED_RDP) {
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opts.OptionType = OPTIONBYTE_RDP;
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opts.RDPLevel = WANTED_RDP;
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}
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if (opts.BORLevel != WANTED_BOR) {
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opts.OptionType = OPTIONBYTE_BOR;
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opts.BORLevel = WANTED_BOR;
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}
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if (opts.OptionType != 0) {
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HAL_FLASHEx_OBProgram(&opts);
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}
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}
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bool flash_unlock(void)
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{
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HAL_FLASH_Unlock();
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | 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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uint32_t SectorError = 0;
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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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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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flash_lock();
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return true;
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}
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bool flash_write_byte(uint32_t address, uint8_t data)
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{
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return HAL_OK == HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, address, data);
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}
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bool flash_write_word(uint32_t address, uint32_t data)
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{
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return HAL_OK == HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, address, data);
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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_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_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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bool ret;
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for (uint8_t i = 0; i < datalen; i++) {
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ret = flash_write_byte(FLASH_OTP_BASE + block * FLASH_OTP_BLOCK_SIZE + offset + i, data[i]);
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if (!ret) {
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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;
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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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