54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
#include "user_flash.h"
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/* 写入原始数据 ---------------------------------------------*/
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HAL_StatusTypeDef flash_write_data(uint32_t addr, uint8_t *data, uint16_t size)
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{
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HAL_StatusTypeDef status = HAL_OK;
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uint32_t i;
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uint32_t write_addr = addr;
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FLASH_EraseInitTypeDef erase_init;
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uint32_t sector_error;
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// 1. 解锁Flash
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HAL_FLASH_Unlock();
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// 2. 擦除目标扇区
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erase_init.TypeErase = FLASH_TYPEERASE_SECTORS;
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erase_init.Sector = FLASH_USER_SECTOR;
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erase_init.NbSectors = 1; // 擦除1个扇区
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erase_init.VoltageRange = FLASH_VOLTAGE_RANGE_3; // 根据电压范围选择
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// 执行擦除操作
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if (HAL_FLASHEx_Erase(&erase_init, §or_error) != HAL_OK)
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{
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status = HAL_ERROR;
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goto exit;
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}
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// 3. 写入数据
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for (i = 0; i < size; i += 4)
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{ // 以32位（4字节）为单位写入
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uint32_t data_to_write = *(uint32_t *)(data + i);
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD,
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write_addr,
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data_to_write) != HAL_OK)
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{
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status = HAL_ERROR;
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break;
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}
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write_addr += 4; // 地址递增
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}
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exit:
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// 4. 锁定Flash
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HAL_FLASH_Lock();
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return status;
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}
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/* 读取原始数据 ---------------------------------------------*/
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void flash_read_data(uint32_t addr, uint8_t *data, uint32_t size)
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{
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memcpy(data, (uint32_t *)addr, size);
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}
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