stm32 hal库 bootloader程序代码

以下是一个简单的基于HAL库的STM32 bootloader程序代码，可以用于在芯片上下载和更新应用程序。

#include "main.h"
#include "stm32f1xx_hal.h"

#define FLASH_START_ADDRESS 0x08000000
#define FLASH_END_ADDRESS   0x08010000

typedef void (*pFunction)(void);

void bootloader(void);
void jump_to_application(uint32_t address);

int main(void)
{
    HAL_Init();
    __HAL_RCC_GPIOC_CLK_ENABLE();
    GPIO_InitTypeDef GPIO_InitStruct = {0};
    GPIO_InitStruct.Pin = GPIO_PIN_13;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
    if (HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13) == GPIO_PIN_RESET)
    {
        bootloader(); // Enter bootloader mode
    }
    else
    {
        jump_to_application(FLASH_START_ADDRESS); // Jump to application
    }
}

void bootloader(void)
{
    // Perform any necessary initialization

    // Wait for data to arrive over the communication interface (e.g. UART)
    while (/* no data received */);

    // Erase the flash memory sectors where the application will be written
    FLASH_EraseInitTypeDef eraseInitStruct = {0};
    eraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
    eraseInitStruct.Sector = FLASH_SECTOR_0;
    eraseInitStruct.NbSectors = FLASH_SECTOR_TOTAL;
    eraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
    uint32_t error = 0;
    HAL_FLASH_Unlock();
    if (HAL_FLASHEx_Erase(&eraseInitStruct, &error) != HAL_OK)
    {
        // Handle error
    }
    HAL_FLASH_Lock();

    // Receive data and write it to the flash memory
    uint32_t address = FLASH_START_ADDRESS;
    while (/* data received */)
    {
        HAL_FLASH_Unlock();
        if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, address, /* data */) != HAL_OK)
        {
            // Handle error
        }
        HAL_FLASH_Lock();
        address += sizeof(uint32_t);
    }

    // Jump to application
    jump_to_application(FLASH_START_ADDRESS);
}

void jump_to_application(uint32_t address)
{
    pFunction appEntry = (pFunction) *(__IO uint32_t*) (address + 4);
    __set_MSP(*(__IO uint32_t*) address);
    appEntry();
}

这个程序会在启动时检查GPIOC的第13个引脚，如果它被拉低，则进入bootloader模式，否则直接跳转到应用程序。在bootloader模式下，程序会等待从通信接口（如UART）接收数据，并将其写入flash存储器中。最后，程序会跳转到应用程序的入口点。请注意，这个程序只是一个基础版本，实际情况下可能需要进行更多的错误检查和容错处理。