實驗現象及操做說明:oop
一、本例程共有兩個代碼包,APP和IAP,IAP程序功能實現將APP程序升級至STM32中。ui
二、直接上電或燒寫程序將執行升級的APP應用程序。spa
三、按下按鍵上電或寫程序將進行升級,升級文件.bin文件存入在U盤中3d
BIN升級文件產生方法:code
一、編譯APP工程,產生.hex文件。htm
二、將.hex文件拖至HEX2BIN.EXE便可產生.bin文件。blog
核心代碼:ip
int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration----------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_USB_HOST_Init(); MX_FATFS_Init(); /* USER CODE BEGIN 2 */ if(ARM_KEY_STATE == KEY_UP) goto start; /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ MX_USB_HOST_Process(); /* USER CODE BEGIN 3 */ } start: //²âÊÔÓû§´úÂëÊÇ·ñ´ÓAPPLICATION_ADDRESS±»±à³Ì if (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0x2FFE0000 ) == 0x20000000){ //ÌøתÖÁÓû§³ÌÐò JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4); Jump_To_Application = (pFunction) JumpAddress; //³õʼ»¯Óû§³ÌÐòµÄ¶ÑÕ»Ö¸Õë __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS); //ÌøתÖÁÓ¦ÓóÌÐò Jump_To_Application(); }else{ led_trade(); } /* USER CODE END 3 */ }
源代碼下載連接:get
連接:http://pan.baidu.com/s/1jIrF5jC 密碼:eec1it
iCore4連接: