STM32 Flash寿命测试

前一段时间出差,就把STM32放在家里做测试,程序运行在RAM上,并且另外有一个单片机监视是否出问题,如果出问题还可以重新下程序给这个STM32,我的测试代码也比较简单,就是每个Page都写一下.

#include "stm32f0xx.h"
#define FLASH_PAGE_SIZE         ((uint32_t)0x00000400)   /* FLASH Page Size */
#define FLASH_USER_START_ADDR   ((uint32_t)0x08000000)   /* Start @ of user Flash area */
#define FLASH_USER_END_ADDR     ((uint32_t)0x08004000)   /* End @ of user Flash area */
uint32_t EraseCounter = 0x00, Address = 0x00;
uint32_t NbrOfPage = 0x00;
__IO FLASH_Status FLASHStatus = FLASH_COMPLETE;
void Flash_Test(uint32_t Data)
{
    FLASH_Unlock();
    FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPERR);
    NbrOfPage = (FLASH_USER_END_ADDR - FLASH_USER_START_ADDR) / FLASH_PAGE_SIZE;
    for(EraseCounter = 0; (EraseCounter < NbrOfPage) && (FLASHStatus == FLASH_COMPLETE); EraseCounter++)
    {
        FLASH_ErasePage(FLASH_USER_START_ADDR + (FLASH_PAGE_SIZE * EraseCounter));
    }
    Address = FLASH_USER_START_ADDR;
    while (Address < FLASH_USER_END_ADDR)
    {
        FLASH_ProgramWord(Address, Data);
        Address = Address + 4;
    }
    FLASH_Lock();
    Address = FLASH_USER_START_ADDR;
    while (Address < FLASH_USER_END_ADDR)
    {
        Data = *(__IO uint32_t *)Address;
        Address = Address + 4;
    }
}
void GPIO_PB_Conf()
{
    GPIO_InitTypeDef  GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_1;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
    GPIO_SetBits(GPIOB, GPIO_Pin_1);
}
int main(void)
{
    GPIO_PB_Conf();
    if (RCC_GetFlagStatus(RCC_FLAG_IWDGRST) != RESET)
    {
        GPIO_SetBits(GPIOB, GPIO_Pin_1);
        RCC_ClearFlag();
    }
    else
    {
        GPIO_ResetBits(GPIOB, GPIO_Pin_1);
    }
    RCC_LSICmd(ENABLE);
    while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
    {}
    IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
    IWDG_SetPrescaler(IWDG_Prescaler_256);
    IWDG_SetReload(0x07FF);
    IWDG_ReloadCounter();
    IWDG_Enable();
    while (1)
    {
        Flash_Test(0x12345678);
        IWDG_ReloadCounter();
        Flash_Test(0x87654321);
        IWDG_ReloadCounter();
        Flash_Test(0xFFFFFFFF);
        IWDG_ReloadCounter();
        Flash_Test(0x00000000);
        IWDG_ReloadCounter();
    }
}

发现过了半个月,芯片只出现了局部损坏,如图:

在完整擦除过程如下:

20:27:12 : Flash page 0 @0x08000000 erased.
20:27:12 : Flash page 1 @0x08000400 erased.
20:27:17 : Flash page 0 @0x08000000 erased.
20:27:18 : Flash page 1 @0x08000400 erased.
20:27:18 : Flash page 2 @0x08000800 is not erased. Verify the memory protection.
20:27:18 : Flash page 3 @0x08000C00 erased.
20:27:18 : Flash page 4 @0x08001000 erased.
20:27:18 : Flash page 5 @0x08001400 erased.
20:27:18 : Flash page 6 @0x08001800 erased.
20:27:18 : Flash page 7 @0x08001C00 erased.
20:27:18 : Flash page 8 @0x08002000 erased.
20:27:18 : Flash page 9 @0x08002400 erased.
20:27:18 : Flash page 10 @0x08002800 erased.
20:27:18 : Flash page 11 @0x08002C00 erased.
20:27:18 : Flash page 12 @0x08003000 erased.
20:27:18 : Flash page 13 @0x08003400 is not erased. Verify the memory protection.
20:27:19 : Flash page 14 @0x08003800 is not erased. Verify the memory protection.
20:27:19 : Flash page 15 @0x08003C00 erased.
20:27:19 : Flash page 16 @0x08004000 erased.
20:27:19 : Flash page 17 @0x08004400 erased.
20:27:19 : Flash page 18 @0x08004800 erased.
20:27:19 : Flash page 19 @0x08004C00 erased.
20:27:19 : Flash page 20 @0x08005000 erased.
20:27:19 : Flash page 21 @0x08005400 erased.
20:27:19 : Flash page 22 @0x08005800 erased.
20:27:19 : Flash page 23 @0x08005C00 erased.
20:27:19 : Flash page 24 @0x08006000 erased.
20:27:19 : Flash page 25 @0x08006400 erased.
20:27:20 : Flash page 26 @0x08006800 erased.
20:27:20 : Flash page 27 @0x08006C00 erased.
20:27:20 : Flash page 28 @0x08007000 erased.
20:27:20 : Flash page 29 @0x08007400 erased.
20:27:20 : Flash page 30 @0x08007800 erased.
20:27:20 : Flash page 31 @0x08007C00 erased.

发现只坏了3个区,按照比较少的计算,我出差了15天,再根据实测的擦写正片编程时间约900ms算,约每个片区编程了1440000,只有三个坏掉了,所以保守估计十多万次是有的,所以,大家编程根本不用担心Flash寿命.何况这是F0,据说F4寿命是10倍耶,那么说这次出差回来都死不掉...