py32f0-template/Examples/LL/Flash/SectorEraseAndWrite/main.c

#include "main.h"
#include "py32f0xx_bsp_clock.h"
#include "py32f0xx_bsp_printf.h"

#define FLASH_USER_START_ADDR     0x0800F800

const uint32_t DATA[64] =
{
  0x01010101, 0x23456789, 0x3456789A, 0x456789AB, 0x56789ABC, 0x6789ABCD, 0x789ABCDE, 0x89ABCDEF,
  0x9ABCDEF0, 0xABCDEF01, 0xBCDEF012, 0xCDEF0123, 0xDEF01234, 0xEF012345, 0xF0123456, 0x01234567,
  0x01010101, 0x23456789, 0x3456789A, 0x456789AB, 0x56789ABC, 0x6789ABCD, 0x789ABCDE, 0x89ABCDEF,
  0x9ABCDEF0, 0xABCDEF01, 0xBCDEF012, 0xCDEF0123, 0xDEF01234, 0xEF012345, 0xF0123456, 0x01234567,
  0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
  0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
  0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
  0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA, 0x55555555, 0x23456789, 0xAAAAAAAA,
};

static void APP_FlashErase(void);
static void APP_FlashProgram(void);
static void APP_FlashEraseVerify(void);
static void APP_FlashWriteVerify(void);


int main(void)
{
  BSP_HSI_PLL_48MConfig();

  BSP_USART_Config(115200);
  printf("Flash Read&Write Demo\r\nClock: %ld\r\n", SystemCoreClock);

  // Unlock flash
  LL_FLASH_Unlock();
  // Erase flash
  APP_FlashErase();
  APP_FlashEraseVerify();
  printf("Erase verif: succ\r\n");

  // Write to flash
  APP_FlashProgram();
  // Lock
  LL_FLASH_Lock();
  // Write verification
  APP_FlashWriteVerify();
  printf("Write verif: succ\r\n");

  while (1);
}

static void APP_FlashErase(void)
{
  uint32_t SECTORError = 0;
  FLASH_EraseInitTypeDef EraseInitStruct;
  // Erase type = sector
  EraseInitStruct.TypeErase   = FLASH_TYPEERASE_SECTORERASE;
  // Erase address start
  EraseInitStruct.SectorAddress = FLASH_USER_START_ADDR;
  // Number of sectors
  EraseInitStruct.NbSectors  = 1;
  // Erase
  if (LL_FLASHEx_Erase(&EraseInitStruct, &SECTORError) != SUCCESS)
  {
    APP_ErrorHandler();
  }
}

static void APP_FlashProgram(void)
{
  uint32_t flash_program_start = FLASH_USER_START_ADDR ;
  uint32_t flash_program_end = (FLASH_USER_START_ADDR + sizeof(DATA));
  uint32_t *src = (uint32_t *)DATA;

  while (flash_program_start < flash_program_end)
  {
    // Write to flash
    if (LL_FLASH_Program(FLASH_TYPEPROGRAM_PAGE, flash_program_start, src) == SUCCESS)
    {
      // Move flash point to next page
      flash_program_start += FLASH_PAGE_SIZE;
      // Move data point
      src += FLASH_PAGE_SIZE / 4;
    }
  }
}

static void APP_FlashEraseVerify(void)
{
  uint32_t addr = 0;

  while (addr < sizeof(DATA))
  {
    if (0xFFFFFFFF != HW32_REG(FLASH_USER_START_ADDR + addr))
    {
      printf("erase verification error\r\n");
    }
    addr += 4;
  }
}

static void APP_FlashWriteVerify(void)
{
  uint32_t addr = 0;

  while (addr < sizeof(DATA))
  {
    if (DATA[addr / 4] != HW32_REG(FLASH_USER_START_ADDR + addr))
    {
      printf("write verification error\r\n");
    }
    addr += 4;
  }
}

void APP_ErrorHandler(void)
{
  while (1);
}

#ifdef  USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{
  while (1);
}
#endif /* USE_FULL_ASSERT */