p_lusterinc_camera_focallength_encoder_reset/usersrc/zflash.c

#include "zflash.h"

HAL_StatusTypeDef FlashErase(void)
{
  HAL_StatusTypeDef status;
  uint32_t sector_error_point;
  FLASH_EraseInitTypeDef flash_erase_structer = {
      //
      .TypeErase = FLASH_TYPEERASE_SECTORS, //
      .Sector = FLASH_SECTOR_7,             //
      .NbSectors = 1,                       //
      .VoltageRange = FLASH_VOLTAGE_RANGE_3 //
  };

  HAL_FLASH_Unlock(); // 解锁
  __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |
                         FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR); // 清除一些错误标志

  status = HAL_FLASHEx_Erase(&flash_erase_structer, &sector_error_point);
  HAL_FLASH_Lock(); // 上锁
  return status;
}

// 写数据
HAL_StatusTypeDef FlashWrite(uint32_t StartAddress, uint32_t data)
{
  HAL_StatusTypeDef status;
  // 可以添加一些 StartAddress地址 是否有效的判断
  HAL_FLASH_Unlock(); // 解锁
  status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, StartAddress, data);
  HAL_FLASH_Lock(); // 上锁
  return status;
}

// 读数据
uint32_t FlashRead(uint32_t StartAddress)
{
  return *(uint32_t *)StartAddress;
}