NUCLEO-H533RE开发板测评04（IAP应用升级）

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NUCLEO-H533RE开发板测评04（IAP应用升级） [复制链接]

<div class='showpostmsg'>## 4：FLASH操作

### 4.1：flash説明

![image-20240716153824296](https://boreyun.oss-cn-shanghai.aliyuncs.com/image-20240716153824296.png)

![image-20240716155759579](https://boreyun.oss-cn-shanghai.aliyuncs.com/image-20240716155759579.png)

![image-20240716155823792](https://boreyun.oss-cn-shanghai.aliyuncs.com/image-20240716155823792.png)

![image-20240716155857648](https://boreyun.oss-cn-shanghai.aliyuncs.com/image-20240716155857648.png)

顾名思义，单片机的flash有512个字节，有2个存储库，分别为256个字节，前面在做擦除操作的时候，后面可以进行写入擦做，每个扇区大小为8，共64个扇区。现在的单片机越来越强大，功能也越来越多，这里先使用熟悉传统的读写操作。

其中FLASH操作函数为：

```C
HAL_FLASH_Program(FLASH_TYPEPROGRAM_QUADWORD, Address, ((uint32_t)QuadWord))
```

每次写入数据为16个字节，128位。参考函数定义说明：

```C
/**
* <a href="https://bbs.eeworld.com.cn/home.php?mod=space&uid=159083" target="_blank">@brief</a> Program a quad-word at a specified address.
* @paramTypeProgram Indicate the way to program at a specified address.
*   This parameter can be a value of <a href="https://bbs.eeworld.com.cn/home.php?mod=space&uid=1064992" target="_blank">@ref</a> FLASH_Type_Program
* @paramFlashAddress specifies the address to be programmed.
*   This parameter shall be aligned to the Flash word (128-bit)
* @paramDataAddress specifies the address of data to be programmed
*   This parameter shall be 32-bit aligned
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t FlashAddress, uint32_t DataAddress)
```

FLASH读写程序：

```
  /*在更新内部Flash时候禁用指令缓存*/
  if (HAL_ICACHE_Disable() != HAL_OK)
  {
  Error_Handler();
  }
  /*解锁Flash以启用对Flash控制寄存器的访问*/
  HAL_FLASH_Unlock();

/* 擦除用户Flash区域*/
  /*(由Flash USER START ADDR和FLASH USER END _ADDR定义的区域)*/

/* Get the 1st sector to erase */
  FirstSector = GetSector(FLASH_USER_START_ADDR);

gpio_port_set();
  setSysRunState(STATE_RUN);  //开始运行

uart_device_init(DEV_UART2); // 使能DMA接收
  __HAL_LINKDMA(&huart2, hdmatx, handle_GPDMA1_Channel1);// 使能串口 DMA 发送
  printf("init_ok\r\n");
    
    
    setSysUpdateState(INIT);

printf("FLASH_BANK_SIZE=%d\r\n",FLASH_BANK_SIZE/1024);
  /* Get the 1st sector to erase */
  FirstSector = GetSector(FLASH_USER_START_ADDR);
    printf("FirstSector=%d\r\n",FirstSector);
  /* Get the number of sector to erase from 1st sector*/
  NbOfSectors = GetSector(FLASH_USER_END_ADDR) - FirstSector + 1;
    printf("NbOfSectors=%d\r\n",NbOfSectors);

/* Get the bank */
  BankNumber = GetBank(FLASH_USER_START_ADDR);

printf("BankNumber=%d",BankNumber);

/* Fill EraseInit structure*/
  EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;  //擦除类型
  EraseInitStruct.Banks   = BankNumber;
  EraseInitStruct.Sector  = FirstSector;
  EraseInitStruct.NbSectors = NbOfSectors;

if (HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK)
  {
  while (1)
  {
    Error_Handler();
  }
  }
  Address = FLASH_USER_START_ADDR;

while (Address < FLASH_USER_END_ADDR)
  {

/*往Flash里面写数据*/
  if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_QUADWORD, Address, ((uint32_t)QuadWord)) == HAL_OK)
  {
    Address = Address + 16;
  }
  else
  {
    while (1)
    {
      Error_Handler();
    }
  }
  }

/* 锁定Flash以禁止对Flash控制寄存器的访问 (建议用于保护FLASH存储器免受可能的意外操作) */
  HAL_FLASH_Lock();

/* Re-enable instruction cache */
  if(HAL_ICACHE_Enable() != HAL_OK)
  {
  Error_Handler();
  }

MemoryProgramStatus = Check_Program(FLASH_USER_START_ADDR, FLASH_USER_END_ADDR, QuadWord);

/*Check if there is an issue to program data*/
    if(MemoryProgramStatus != 0)
    {
        printf("Flash_Write_Read_Failure\r\n");
    }
    else
    {
        printf("Flash_Write_Read_Success\r\n");
    }
```

### 4.2：FLASH设置

IAP程序设置

![image-20240730225734670](https://boreyun.oss-cn-shanghai.aliyuncs.com/image-20240730225734670.png)

APP地址和标志位地址设置：

```
#define APP_START_ADDR                0x0800C000     
#define APP_END_ADDR                0x08040000    
#define IAP_UPGRADE_FLAG_ADDR        (APP_END_ADDR-8192) //一个扇区有8K
```

APP程序设置

![image-20240730225758164](https://boreyun.oss-cn-shanghai.aliyuncs.com/image-20240730225758164.png)

代码设置：

```C
    SCB->VTOR = FLASH_BASE | 0xC000; //重映射向量表
```

APP跳转处理

```C
void iap_load_app(uint32_tappxaddr)
{
  __disable_irq ();//关闭总中断
  JumpAddress = *(__IO uint32_t*) (appxaddr + 4);
  JumpToApplication = (pFunction) JumpAddress;
  __set_MSP(*(__IO uint32_t*) appxaddr);//设置MSP堆栈指针值
  JumpToApplication();
}
```

### 4.3：自定义通讯协议

| 名称 | 帧头 | 长度 | 具体数据     | 校验CRC16 |
| ---- | ------ | ------ | ------------------------ | --------- |
| 长度 | 2  | 2  | N        | 2   |
| 值 | 0x55AA | 0x0101 | 包含命令，地址，数据等等 | 0x0102  |

### 4.4：上位机界面

![image-20240730230748526](https://boreyun.oss-cn-shanghai.aliyuncs.com/image-20240730230748526.png)

### 4.5：实现过程

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NUCLEO-H533RE开发板测评04（IAP应用升级） [复制链接]

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