FLASH写入函数HAL_FLASH_Program可以写入16bit,32bit,64bit，实际最终调用FLASH_Program_HalfWord写入的是16bit，所以在写入之前要先把数据存到16bit数组里，然后按照16位写。
其实不用麻烦，直接存8位数组里，然后按照16位和32位写就可以了。
/**
* @brief Program a half-word (16-bit) at a specified address.
* @param Address specify the address to be programmed.
* @param Data specify the data to be programmed.
* @retval None
*/
static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
/**
* @brief Program halfword, word or double word at a specified address
* @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
* The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
*
* @note If an erase and a program operations are requested simultaneously,
* the erase operation is performed before the program one.
*
* @note FLASH should be previously erased before new programmation (only exception to this
* is when 0x0000 is programmed)
*
* @param TypeProgram: Indicate the way to program at a specified address.
* This parameter can be a value of @ref FLASH_Type_Program
* @param Address: Specifies the address to be programmed.
* @param Data: Specifies the data to be programmed
*
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
直接调用函数就可以了，实际是在FLASH->KEYR寄存器分别写入FLASH_KEY1，FLASH_KEY2.
/**
* @brief Unlock the FLASH control register access
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Unlock(void)
FLASH擦除结构体，定义擦除类型TypeErase为页擦除，定义擦除地址PageAddress，定义擦除页数NbPages
/**
* @brief FLASH Erase structure definition
*/
typedef struct
{
uint32_t TypeErase; /*Mass erase or page erase*/
uint32_t Banks; /*!< Select banks to erase when Mass erase is enabled */
uint32_t PageAddress; /*!< PageAdress: Initial FLASH page address to erase when mass erase is disabled
This parameter must be a number between Min_Data = 0x08000000 and Max_Data = FLASH_BANKx_END
(x = 1 or 2 depending on devices)*/
uint32_t NbPages; /*!< NbPages: Number of pagess to be erased.
This parameter must be a value between Min_Data = 1 and Max_Data = (max number of pages - value of initial page)*/
} FLASH_EraseInitTypeDef;
调用HAL_FLASH_Program函数写入
/**
* @brief Program halfword, word or double word at a specified address
* @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
* The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
*
* @note If an erase and a program operations are requested simultaneously,
* the erase operation is performed before the program one.
*
* @note FLASH should be previously erased before new programmation (only exception to this
* is when 0x0000 is programmed)
*
* @param TypeProgram: Indicate the way to program at a specified address.
* This parameter can be a value of @ref FLASH_Type_Program
* @param Address: Specifies the address to be programmed.
* @param Data: Specifies the data to be programmed
*
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
HAL_FLASH_Lock();
/**
* @brief 写若干页
* @param 地址
* @param 数组
* @param 长度,8bit
* @retval None
*/
int Flash_write(uint32_t appxaddr,uint32_t *appbuf,uint32_t appsize)
{
static FLASH_EraseInitTypeDef EraseInitStruct;
uint32_t SECTORError = 0;
uint32_t Address = 0x00; //记录写入的地址
// printf("\nFLASH:%d ",appbuf[0]%0x100);
// printf("\nFLASH:%d ",appbuf[0] );
/* 解锁 */
HAL_FLASH_Unlock();
/* 擦除 */
EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
EraseInitStruct.NbPages = appsize/2048+1;
EraseInitStruct.PageAddress = appxaddr;
if (HAL_FLASHEx_Erase(&EraseInitStruct, &SECTORError) != HAL_OK)
{
return -1;
}
/* 向内部FLASH写入数据 */
Address = appxaddr;
uint32_t i=0;
while(Address < appxaddr + appsize)
{
if(HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, Address,appbuf[i]) == HAL_OK)
{
Address = Address + 4;
i+=1;
}
else
{
/*写入出错，返回，实际应用中可加入处理 */
return -1;
}
}
/* 上锁 */
HAL_FLASH_Lock();
return 0;
}
写函数调用
Flash_write(FLASH_APP1_ADDR,(u32 *)USART_RX_BUF,Uart1.Length);
读的时候直接用memcpy就可以了
memcpy((uint8_t *)USART_TX_BUF+2,(uint8_t *)FLASH_APP1_ADDR,Uart1.Length-4);
写入的数据是串口接收到的8bit数据，写是按照32bit写的，中间有四倍的差别。可以在调用函数的时候处理，也可以在写的时候处理
