STM32CUBEMX+STM32H743ZIT6+IAP+UART在线升级初始化和代码解析

1、STM32H7带的ITCM，DTCM，AXI SRAM，SRAM1，SRAM2，SRAM3，SRAM4和备份SRAM五块。

其中，

①TCM区包括ITCM和DTCM，这两个是直连CPU的。 速率与CPU一致，最高能到480MHz。

DTCM地址：0x2000 0000，大小128KB。

ITCM地址：0x0000 0000，大小64KB。

②AXI SRAM总线所外挂的外设

外接的主控是LTDC，DMA2D，MDMA，SDMMC1，AXIM和D2-to-D1 AHB 总线。

外接的从设备是AHB3总线，Flash A，Flash B，FMC总线，QSPI和AXI SRAM。另外AHB3也是由AXI总线分支出来的，然后再由AHB3分支出APB3总线。

速度：240MHz。

地址：0x2400 0000，大小512KB。

用途：用途不限，可以用于用户应用数据存储或者LCD显存。

③SRAM1，SRAM2和SRAM3区外接的主控是D1-to-D2 AHB 总线，AHBP总线，DMA1，DMA2，Ethernet MAC，SDMMC2，USB HS1和USB HS2。外接的从设备是SRAM1，SRMA2，SRAM3，AHB1，AHB2，APB1，APB2，D2-to-D1 AHB总线和D2-to-D3 AHB总线。

速度：240MHz。

SRAM1：地址0x3000 0000，大小128KB，用途不限，可用于D2域中的DMA缓冲，也可以当D1域断电后用于运行程序代码。

SRAM2：地址0x3002 0000，大小128KB，用途不限，可用于D2域中的DMA缓冲，也可以用于用户数据存取。

SRAM3：地址0x3004 0000，大小32KB，用途不限，主要用于以太网和USB的缓冲。

④ SRAM4区

位于D3域，数据带宽是32bit，挂在AHB总线上，大部分主控都能访这块SRAM区。

速度：240MHz。

地址：0x3800 0000，大小64KB。

用途：用途不限，可以用于D3域中的DMA缓冲，也可以当D1和D2域进入DStandby待机方式后，继续保存用户数据。

⑤ Backup SRAM区

备份RAM区，位于D3域，数据带宽是32bit，挂在AHB总线上，大部分主控都能访问这块SRAM区。

速度：240MHz。

地址：0x3880 0000，大小4KB。

用途：用途不限，主要用于系统进入低功耗模式后，继续保存数据（Vbat引脚外接电池）。

2、FLASH

STM32H743ZIT6 的 FLASH 容量为 2048K 字节（2MB）， STM32H743 的闪存模块组织如表所示

分为两个BANK，每个BANK均分为8个扇区。每个扇区的大小为128KB。

这次我们实现IAP，通过bootloader和APP两个程序来实现。bootloader程序存放BANK1的扇区0，APP程序存放在BANK1的扇区1。FLASHA和FLASHB对应的总线是AXI SRAM，生成的BIN文件对应的栈顶地址也落在AXI_SRAM内。我们打开APP的BIN文件，即可看到栈顶地址为0x240005A0。

综上。stm32H743ZIT6的内存和闪存地址

ITCMRAM (xrw) : ORIGIN = 0x00000000, LENGTH = 64K

DTCMRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K

AXI_SRAM (xrw) : ORIGIN = 0x24000000, LENGTH = 512K

SRAM1 (xrw) : ORIGIN = 0x30000000, LENGTH = 128K

SRAM2 (xrw) : ORIGIN = 0x30020000, LENGTH = 128K

SRAM3 (xrw) : ORIGIN = 0x30040000, LENGTH = 32K

SRAM4 (xrw) : ORIGIN = 0x38000000, LENGTH = 64K

FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K

flash擦写

flash擦写分为四步

FLASH写入的时候，需要先解锁，接着擦除，然后写入，最后给FLASH上锁。

1、解锁

HAL_FLASH_Unlock( )；

2、擦除

HAL_FLASHEx_Erase（&EraseInitStruct,&SectorError）;

FLASH_EraseInitTypeDef EraseInitStruct;

EraseInitStruct.Banks = FLASH_BANK_1;//擦除对应的BANK

EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS ;//擦除模式按照扇区

EraseInitStruct.Sector = FLASH_SECTOR_1;//APP占用的起始地址所在的扇区

EraseInitStruct.NbSectors = 1; //APP占用的扇区数

EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3; //供电电压

回顾STM32F103的Flash擦除的最小单位是页，也就是每次一擦除，都会把擦除地址所在页的整页数据擦掉；

STM32F407的Flash擦除的最小单位是扇区，也就是每次一擦除，都会把擦除地址所在扇区的扇区数据擦掉；

3、写入

if(HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD,Address, data_Address) == HAL_OK) //写入函数，按照字格式写入，每次写入8个字，即32个字节

{ Address = Address + 4 * 8;

data_Address = data_Address + 4 * 8;

}

回顾F1和F4，每次写入4字节。

4、上锁

HAL_FLASH_Lock( )；

 stm32cubemx配置

1. bootloader配置

①MPU配置

②RCC配置

③串口配置

④烧写配置

⑤时钟树配置

⑥KEIL配置

1. IAP程序配置

和BOOTLOADER的stmcubemx配置一样

KEIL配置

添加

$K\ARM\ARMCC\bin\fromelf.exe --bin --output=Bin\@L.bin !L

代码

1. IAP代码

/* USER CODE BEGIN Header *//********************************************************************************* @file : main.c* @brief : Main program body******************************************************************************* @attention** Copyright (c) 2024 STMicroelectronics.* All rights reserved.** This software is licensed under terms that can be found in the LICENSE file* in the root directory of this software component.* If no LICENSE file comes with this software, it is provided AS-IS.********************************************************************************//* USER CODE END Header *//* Includes ------------------------------------------------------------------*/#include "main.h"#include "dma.h"#include "memorymap.h"#include "usart.h"#include "gpio.h"/* Private includes ----------------------------------------------------------*//* USER CODE BEGIN Includes */#include "stdio.h"#include "string.h"#include "stm32h7xx_ll_rcc.h"#define ENABLE_INT() __set_PRIMASK(0) /* 使能全局中断 */#define DISABLE_INT() __set_PRIMASK(1) /* 禁止全局中断 */#if 1//下面两个变量放进函数内部会跳转失败，跳件错误中断！void (*JumpToNewAPP_ResetHandler)(void); /* 声明一个函数指针 */void JumpToAddr_NewAPP(uint32_t Addr_APP_Start);__IO uint32_t BootAddr = 0x08020000;//0x1FFFF000; /* 的系统 BootLoader 地址 *//* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*//* USER CODE BEGIN PTD *//* USER CODE END PTD *//* Private define ------------------------------------------------------------*//* USER CODE BEGIN PD *//* USER CODE END PD *//* Private macro -------------------------------------------------------------*//* USER CODE BEGIN PM */#define NVIC_VectTab_RAM_Start ((uint32_t)0x24000000) //RAM起始地址#define NVIC_VectTab_RAM_End ((uint32_t)0x24020000) //RAM结束地址，大小为512K，根据自己的实际芯片大小修改#define NVIC_VectTab_FLASH ((uint32_t)0x08000000) //Flash起始地址#define BOOT_SIZE 0x20000 //Boot大小，128KB，占用第一个扇区#define ApplicationAddress (NVIC_VectTab_FLASH + BOOT_SIZE) //APP的起始地址#define Application_SIZE 0x20000 //APP大小为128KB。占用第二个扇区#define FLASH_USER_END_ADDR (ApplicationAddress+Application_SIZE) //APP的结束地址#define UPDATE_CMD "update" //升级擦除指令typedef void (*iapfun)(void);void SystemClock_Config(void);/* USER CODE END PM *//* Private variables ---------------------------------------------------------*//* USER CODE BEGIN PV */uint32_t SectorError = 0 ; //擦除错误的扇区地址，擦除成功时候该值为0xffffffffiapfun jump2app; //用函数指针指向复位函数入口地址// unsigned int count2 = 0;unsigned char datatemp[256] = {0};//用于存放串口接收缓冲区，存放256B数据。unsigned char boot_flag = 0;//擦除完成标志unsigned char time_out_flag = 0;//接收串口数据超时标志/* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/void SystemClock_Config(void);static void MPU_Config(void);/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*//* USER CODE BEGIN 0 */int fputc(int ch, FILE *f){HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xffff);return ch;}uint32_t STMFLASH_ReadWord(uint32_t faddr){return *(uint32_t *)faddr;}/* USER CODE END 0 *//*** @brief The application entry point.* @retval int*/int main(void){/* USER CODE BEGIN 1 *//* USER CODE END 1 *//* MPU Configuration--------------------------------------------------------*/MPU_Config();/* Enable the CPU Cache *//* Enable I-Cache---------------------------------------------------------*/SCB_EnableICache();/* Enable D-Cache---------------------------------------------------------*/SCB_EnableDCache();/* 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_DMA_Init();MX_USART1_UART_Init();/* USER CODE BEGIN 2 */unsigned char i;printf("boot start\r\n");printf("input \"update\"\t to erasure user flash, or wait 10s to start user app\r\n");//提示输出指令“update”，10s内没接收到指令，开始启动APPfor (int j = 0; j < 18 * 1024 / 4; j++){uint32_t tempSTM32flash1 = STMFLASH_ReadWord(0x08020000 + j * 4);uint32_t tempSTM32flash2 = STMFLASH_ReadWord(0x08040000 + j * 4);if (tempSTM32flash1 != tempSTM32flash2){printf("not same Addr=0x%08X\r\n", 0x08040000 + j * 4);}}for (i = 0; i < 10; i++){//上电后每秒阻塞接收升级指令，连续10秒未收到则跳转App，10秒内收到则接收App数据并写入for (int count = 0; count < 256; count++){datatemp[count] = 0xFF;}HAL_UART_Receive(&huart1, datatemp, 256, 1000);if (strstr((const char *)datatemp, UPDATE_CMD) != NULL) //查询接收的数据是否包含指令。{// 擦除App区域FLASH_EraseInitTypeDef EraseInitStruct;EraseInitStruct.Banks = FLASH_BANK_1;//擦除对应的BANKEraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS ;//擦除模式按照扇区EraseInitStruct.Sector = FLASH_SECTOR_1;//APP占用的起始地址所在的扇区// EraseInitStruct.Sector = FLASH_SECTOR_2;//APP占用的起始地址所在的扇区EraseInitStruct.NbSectors = 1; //APP占用的扇区数EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3; //供电电压HAL_FLASH_Unlock();//解锁// SCB_CleanInvalidateDCache();if (HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK) //如果擦除不成功，上锁{HAL_FLASH_Lock();printf("Erase fail at:0x%x\n\r", SectorError); //返回擦除失败的扇区位置return 0;}FLASH_WaitForLastOperation(5000 * 10, FLASH_BANK_1);printf("当SectorError=0x%X\t;表示擦除成功\r\n", SectorError);boot_flag = 1;//擦除成功，开始升级printf("Erase OK\n\r");break;}}if (boot_flag == 1){HAL_StatusTypeDef temp;//状态标志符unsigned int Address;//地址变量unsigned int data_32;//按照字写入,也就是4Bunsigned int buff_32[8];//按照字写入,也就是32Bunsigned char j = 0;//printf("ready to receive bin, please send in 30s\n\r");//提示在30s内发送2进制APP文件Address = ApplicationAddress; //指向预留存放APP的FLASH地址for (int count = 0; count < 256; count++){datatemp[count] = 0xFF;}temp = HAL_UART_Receive(&huart1, datatemp, 256, 30 * 1000); //在30s内通过串口1发送2进制APP文件if (temp == HAL_TIMEOUT){//阻塞30S，未收到App数据则退出printf("time out, end wait to receive bin\n\r");return 0;}else if (temp == HAL_OK){//收到则循环接收，每秒阻塞接收256字节，并写入Flashwhile (1){unsigned char i;HAL_FLASH_Unlock();//解锁uint32_t data_Address = (uint32_t)(&datatemp);for (i = 0; i < 8; i++) //把接收的256字节，按照每次写入32字节，写入8次{if (Address < FLASH_USER_END_ADDR) //写入地址未超出预留区域{if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD, Address, data_Address) == HAL_OK) //写入函数，按照字格式写入，每次写入32个字{Address = Address + 4 * 8;data_Address = data_Address + 4 * 8;}else{HAL_FLASH_Lock();printf("write fail at: 0x%x\n\r", Address);return 0;}}elseprintf("写入的升级程序超出预留APP区域\r\n");}HAL_FLASH_Lock();printf("write 256 btye OK: 0x%x\t%d\n\r", Address, j++);//循环调用串口接收函数。最后一包数据不足256字节时会接收超时，防止app数据不完整，不足256字节数据接收完以后处理一次，下一次接收超时认为接收完成，跳转Appfor (int count = 0; count < 256; count++){datatemp[count] = 0xFF;}temp = HAL_UART_Receive(&huart1, datatemp, 256, 2 * 1000);if (temp == HAL_TIMEOUT){time_out_flag++;if (time_out_flag == 2){printf("End write OK\n\r");goto START_APP;}}}}}else if (boot_flag == 0) //没有收到升级命令{START_APP:printf("start user app\n\r");HAL_Delay(10);/*判断App的栈顶指针是否合法(即是否有App)。ApplicationAddress为App在flash中的地址，(*(volatile u32*)ApplicationAddress)的意思取用户程序首地址里面的数据，这个数据就是用户代码的堆栈地址，堆栈地址指向RAM，而RAM的起始地址是0x20000000，因此上面的判断语句执行：判断用户代码的堆栈地址是否落在:0x20000000~0x2001ffff区间中这里的目的是判断App的栈顶指针是否在0x20000000到0x2001FFFF之间，在的话就认为有App，不在就没有*/printf("ApplicationAddress:%0x\r\n", (*(unsigned int *)ApplicationAddress));if (((*(unsigned int *)ApplicationAddress) >= NVIC_VectTab_RAM_Start) &&((*(unsigned int *)ApplicationAddress) <= NVIC_VectTab_RAM_End)){__set_MSP(*(unsigned int *)ApplicationAddress); //调用__set_MSP重新设定栈顶代地址，把栈顶地址设置为APP代码指向的栈顶地址。jump2app = (iapfun) * (unsigned int *)(ApplicationAddress + 4); //获得新的复位函数入口地址,让jump2这个函数指针指向复位函数入口地址。jump2app(); //跳转到新的复位函数}else{printf("no user app\n\r");return 0;}}/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */}/*** @brief System Clock Configuration* @retval None*/void SystemClock_Config(void){RCC_OscInitTypeDef RCC_OscInitStruct = {0};RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};/** Supply configuration update enable*/HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);/** Configure the main internal regulator output voltage*/__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);while (!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}__HAL_RCC_SYSCFG_CLK_ENABLE();__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);while (!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;RCC_OscInitStruct.HSEState = RCC_HSE_ON;RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;RCC_OscInitStruct.PLL.PLLM = 1;RCC_OscInitStruct.PLL.PLLN = 120;RCC_OscInitStruct.PLL.PLLP = 2;RCC_OscInitStruct.PLL.PLLQ = 2;RCC_OscInitStruct.PLL.PLLR = 2;RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3;RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;RCC_OscInitStruct.PLL.PLLFRACN = 0;if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK){Error_Handler();}/** Initializes the CPU, AHB and APB buses clocks*/RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2| RCC_CLOCKTYPE_D3PCLK1 | RCC_CLOCKTYPE_D1PCLK1;RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK){Error_Handler();}}/* USER CODE BEGIN 4 */void JumpToAddr_NewAPP(uint32_t Addr_APP_Start){uint32_t i = 0;// Cache_Disable();/* 关闭全局中断 *///DISABLE_INT();/** 关闭全局中断 */__disable_irq();/* 关闭滴答定时器，复位到默认值 */SysTick->CTRL = 0;SysTick->LOAD = 0;SysTick->VAL = 0;/* 设置所有时钟到默认状态， 使用 HSI 时钟 *///LL_RCC_DeInit();HAL_RCC_DeInit();/* 关闭所有中断，清除所有中断挂起标志 */for (i = 0; i < 8; i++){NVIC->ICER[i] = 0xFFFFFFFF;NVIC->ICPR[i] = 0xFFFFFFFF;}/* 使能全局中断 *///ENABLE_INT();/** 使能全局中断 */__enable_irq();/* 跳转到系统 BootLoader，首地址是 MSP，地址+4 是复位中断服务程序地址 */JumpToNewAPP_ResetHandler = (void (*)(void))(*((uint32_t *)(Addr_APP_Start + 4)));/* 设置主堆栈指针 */__set_MSP(*(uint32_t *)Addr_APP_Start);/* 跳转到系统 BootLoader */JumpToNewAPP_ResetHandler();/* 跳转成功的话，不会执行到这里，用户可以在这里添加代码 */while (1){}}#endif/* USER CODE END 4 *//* MPU Configuration */void MPU_Config(void){MPU_Region_InitTypeDef MPU_InitStruct = {0};/* Disables the MPU */HAL_MPU_Disable();/** Initializes and configures the Region and the memory to be protected*/MPU_InitStruct.Enable = MPU_REGION_ENABLE;MPU_InitStruct.Number = MPU_REGION_NUMBER0;MPU_InitStruct.BaseAddress = 0x24000000;MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;MPU_InitStruct.SubRegionDisable = 0x0;MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;HAL_MPU_ConfigRegion(&MPU_InitStruct);/* Enables the MPU */HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);}/*** @brief This function is executed in case of error occurrence.* @retval None*/void Error_Handler(void){/* USER CODE BEGIN Error_Handler_Debug *//* User can add his own implementation to report the HAL error return state */__disable_irq();while (1){}/* USER CODE END Error_Handler_Debug */}#ifdef USE_FULL_ASSERT/*** @brief Reports the name of the source file and the source line number* where the assert_param error has occurred.* @param file: pointer to the source file name* @param line: assert_param error line source number* @retval None*/void assert_failed(uint8_t *file, uint32_t line){/* USER CODE BEGIN 6 *//* User can add his own implementation to report the file name and line number,ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) *//* USER CODE END 6 */}#endif /* USE_FULL_ASSERT */

1. APP代码

/* USER CODE BEGIN Header *//********************************************************************************* @file : main.c* @brief : Main program body******************************************************************************* @attention** Copyright (c) 2024 STMicroelectronics.* All rights reserved.** This software is licensed under terms that can be found in the LICENSE file* in the root directory of this software component.* If no LICENSE file comes with this software, it is provided AS-IS.********************************************************************************//* USER CODE END Header *//* Includes ------------------------------------------------------------------*/#include "main.h"#include "dma.h"#include "memorymap.h"#include "usart.h"#include "gpio.h"/* Private includes ----------------------------------------------------------*//* USER CODE BEGIN Includes */#include <stdio.h>/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*//* USER CODE BEGIN PTD *//* USER CODE END PTD *//* Private define ------------------------------------------------------------*//* USER CODE BEGIN PD *//* USER CODE END PD *//* Private macro -------------------------------------------------------------*//* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*//* USER CODE BEGIN PV *//* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/void SystemClock_Config(void);static void MPU_Config(void);/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*//* USER CODE BEGIN 0 */#define NVIC_VectTab_FLASH ((uint32_t)0x08000000) //Flash起始地址#define BOOT_SIZE 0x20000 //Boot大小 128KBint fputc(int ch, FILE *f){HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xffff);return ch;}/* USER CODE END 0 *//*** @brief The application entry point.* @retval int*/int main(void){/* USER CODE BEGIN 1 */SCB->VTOR = NVIC_VectTab_FLASH | BOOT_SIZE; /* 设置中断向量偏移地址 *//* USER CODE END 1 *//* MPU Configuration--------------------------------------------------------*/MPU_Config();/* Enable the CPU Cache *//* Enable I-Cache---------------------------------------------------------*/SCB_EnableICache();/* Enable D-Cache---------------------------------------------------------*/SCB_EnableDCache();/* 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_DMA_Init();MX_USART1_UART_Init();/* USER CODE BEGIN 2 */uint32_t Count = 0;printf("\n\r app start\n\r");/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */HAL_Delay(10);if(Count%100 == 0){printf("this is app!\t%d\n\r",Count/100);}Count++;}/* USER CODE END 3 */}/*** @brief System Clock Configuration* @retval None*/void SystemClock_Config(void){RCC_OscInitTypeDef RCC_OscInitStruct = {0};RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};/** Supply configuration update enable*/HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);/** Configure the main internal regulator output voltage*/__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}__HAL_RCC_SYSCFG_CLK_ENABLE();__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;RCC_OscInitStruct.HSEState = RCC_HSE_ON;RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;RCC_OscInitStruct.PLL.PLLM = 1;RCC_OscInitStruct.PLL.PLLN = 120;RCC_OscInitStruct.PLL.PLLP = 2;RCC_OscInitStruct.PLL.PLLQ = 2;RCC_OscInitStruct.PLL.PLLR = 2;RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3;RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;RCC_OscInitStruct.PLL.PLLFRACN = 0;if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK){Error_Handler();}/** Initializes the CPU, AHB and APB buses clocks*/RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2|RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK){Error_Handler();}}/* USER CODE BEGIN 4 *//* USER CODE END 4 *//* MPU Configuration */void MPU_Config(void){MPU_Region_InitTypeDef MPU_InitStruct = {0};/* Disables the MPU */HAL_MPU_Disable();/** Initializes and configures the Region and the memory to be protected*/MPU_InitStruct.Enable = MPU_REGION_ENABLE;MPU_InitStruct.Number = MPU_REGION_NUMBER0;MPU_InitStruct.BaseAddress = 0x24000000;MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;MPU_InitStruct.SubRegionDisable = 0x0;MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;HAL_MPU_ConfigRegion(&MPU_InitStruct);/* Enables the MPU */HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);}/*** @brief This function is executed in case of error occurrence.* @retval None*/void Error_Handler(void){/* USER CODE BEGIN Error_Handler_Debug *//* User can add his own implementation to report the HAL error return state */__disable_irq();while (1){}/* USER CODE END Error_Handler_Debug */}#ifdef USE_FULL_ASSERT/*** @brief Reports the name of the source file and the source line number* where the assert_param error has occurred.* @param file: pointer to the source file name* @param line: assert_param error line source number* @retval None*/void assert_failed(uint8_t *file, uint32_t line){/* USER CODE BEGIN 6 *//* User can add his own implementation to report the file name and line number,ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) *//* USER CODE END 6 */}#endif /* USE_FULL_ASSERT */

运行结果

• 烧写boot程序

用sscom打开串口。输入指令，注意只要输入的内容包含update即可匹配

• 发送设置

• 发送bin文件

• app烧录完成，并运行