STM32三方库固件升级与OTA详解

官方网站：http://iot.rt-thread.com

官方文档：https://www.rt-thread.org/document/site/#/rt-thread-version/rt-thread-standard/application-note/system/rtboot/an0028-rtboot

新建产品->固件升级->生成Bootloader：

将会生成bin固件发送到邮箱并下载：

配置工程、Target->Production Programming（JLINK方式）：

由于此时app分区还没有对应的app程序，所以会卡住：

修改程序链接脚本中ROM的起始地址和大小：

由于App分区的起始地址为0x08020000（根据实际情况），需要修改链接脚本和中断向量的跳转地址；

注意：rt-thread/src/components.c->rtthread_startup为初始化函数，初始化完毕进入main。

修改中断向量表位置（board.c）：

RT_WEAK void rt_hw_board_init()

{

 // 中断向量表偏移

 SCB->VTOR = ((uint32_t)0x8020000);

… …

在 main 函数中添加版本信息（用于区别APP分区）：

#define APP_VERSION "1.0.0"

int main(void)

{

rt_kprintf("/* ———Application——— */\n");

 rt_kprintf("The current version of APP firmware is %s\n", APP_VERSION);

    … …

SFUD（全称 Serial Flash Universal Driver）是一款开源的串行 SPI Flash 通用驱动库;

FAL：Flash 抽象层。      

使能组件：

修改board.h:

#define BSP_USING_ON_CHIP_FLASH

#define BSP_USING_SPI2

添加fal_config：

// 修改fal_cfg.h：

/*******************************************

 * File: fal_cfg.h

 * Describe: FAL_FLASH分区表

 * Author: Xiangfu DING

 * Time: 2025-02-10

*******************************************/

#ifndef _FAL_CFG_H_

#define _FAL_CFG_H_

#include <rtconfig.h>

#include <board.h>

#ifndef FAL_USING_NOR_FLASH_DEV_NAME

#define NOR_FLASH_DEV_NAME             "norflash0"

#else

#define NOR_FLASH_DEV_NAME              FAL_USING_NOR_FLASH_DEV_NAME

#endif

// STM32F407VGT6 – 内部 Flash 大小为 1024KB（分为 4 个 16KB 扇区、1 个 64KB 扇区、7 个 128KB 扇区）

#define FLASH_SIZE_GRANULARITY_16K        (4 * 16 * 1024)

#define FLASH_SIZE_GRANULARITY_64K        (64 * 1024)

#define FLASH_SIZE_GRANULARITY_128K        (7 * 128 * 1024)

#define STM32_FLASH_START_ADRESS_16K    STM32_FLASH_START_ADRESS

#define STM32_FLASH_START_ADRESS_64K    (STM32_FLASH_START_ADRESS_16K + FLASH_SIZE_GRANULARITY_16K)

#define STM32_FLASH_START_ADRESS_128K    (STM32_FLASH_START_ADRESS_64K + FLASH_SIZE_GRANULARITY_64K)

/* ===================== Flash device Configuration ========================= */

extern const struct fal_flash_dev stm32_onchip_flash_16k;

extern const struct fal_flash_dev stm32_onchip_flash_64k;

extern const struct fal_flash_dev stm32_onchip_flash_128k;

/* ===================== Flash device Configuration ========================= */

extern struct fal_flash_dev nor_flash0;

/* flash device table */

#define FAL_FLASH_DEV_TABLE                                          \

{                                                                    \

    &stm32_onchip_flash_16k,                                         \

    &stm32_onchip_flash_64k,                                         \

    &stm32_onchip_flash_128k,                                        \

    &nor_flash0,                                                     \

}

/* ====================== Partition Configuration ========================== */

#ifdef FAL_PART_HAS_TABLE_CFG

/* partition table */

#define FAL_PART_TABLE \

{ \

    {FAL_PART_MAGIC_WROD,        "app",     "onchip_flash",      0 * 1024,       512 * 1024, 0}, \

    {FAL_PART_MAGIC_WROD,   "download", NOR_FLASH_DEV_NAME,      0 * 1024,       512 * 1024, 0}, \

}

#endif /* FAL_PART_HAS_TABLE_CFG */

#endif /* _FAL_CFG_H_ */

// 初始化

#include "fal.h"

int main(void)

{

 // 初始化W25Q64

    rt_hw_spi_device_attach("spi2", "spi20", GPIOB, GPIO_PIN_12);

    //flash名称要正确

    if (RT_NULL == rt_sfud_flash_probe("W25Q64", "spi20")) {

     rt_kprintf("rt_sfud_flash_probe failed!\n");

    }

 // 初始化FAL

 fal_init();

    … …

https://codeload.github.com/RT-Thread-packages/ota_downloader/zip/refs/tags/1.0.0

打开资源所在目录：

打包固件：

注意：OTA只会增量升级，固件版本必须大于当前app分区版本号才可以触发。

/*******************************************

 * File: sdota.c

 * Describe: SD卡固件升级

 * Author: Xiangfu DING

 * Time: 2025-02-07

*******************************************/

#include "sdota.h"

#include "core.h"

#include <rtdevice.h>

#include <drv_common.h>

#include <rtdbg.h>

#include <finsh.h>

#include <fal.h>

#include <dfs_fs.h>

static void print_progress(size_t cur_size, size_t total_size)

{

    uint8_t progress = cur_size * 100 / total_size;

    if (progress > 100) {

        progress = 100;

    }

    rt_kprintf("Download progress: %d%\n", progress);

}

int sdOtaDownload(const char* uri)

{

    const struct fal_partition *dl_part = RT_NULL;

    int begin_offset = 0;

    int file_size = 0;

    int fd;

    struct stat fileStat;

    uint8_t buffer[1024];

    int ret = RT_EOK;

    rt_kprintf("sdOtaDownload uri: %s\n", uri);

    // 打开并检查固件是否存在

    fd = open(uri, O_RDONLY);

    if (fd < 0) {

        rt_kprintf("Firmware does not exist!\n");

        goto __exit;

    }

    // 获取固件大小

    if (stat(uri, &fileStat) == 0) {

        file_size =  fileStat.st_size;

        rt_kprintf("Firmware size: %d\n", file_size);

    } else {

        rt_kprintf("Failed to get file size for %s\n", uri);

        goto __exit;

    }

    // 获取下载分区信息并擦除下载分区数据

    if ((dl_part = fal_partition_find("download")) == RT_NULL) {

        rt_kprintf("Firmware download failed! Partition (%s) find error!\n", "download");

        ret = -RT_ERROR;

        goto __exit;

    }

    // 擦除Download分区

    rt_kprintf("Start erase flash (%s) partition!\n", dl_part->name);

    if (fal_partition_erase(dl_part, 0, file_size) < 0) {

        rt_kprintf("Firmware download failed! Partition (%s) erase error!\n", dl_part->name);

        ret = -RT_ERROR;

        goto __exit;

    }

    rt_kprintf("Erase flash (%s) partition success!\n", dl_part->name);

    // 拷贝固件到Download分区

    while (begin_offset < file_size) {

        // 读取文件到缓冲区

        int length = read(fd, buffer, sizeof(buffer));

        if (length < 0) {

            rt_kprintf("Read file error!\n");

            ret = -RT_ERROR;

            goto __exit;

        }

        // 写入闪存分区

        if (fal_partition_write(dl_part, begin_offset, buffer, length) < 0) {

            rt_kprintf("Firmware download failed! Partition (%s) write data error!\n", dl_part->name);

            ret = -RT_ERROR;

            goto __exit;

        }

        // 更新下载的偏移量

        begin_offset += length;

        // 打印下载进度

        print_progress(begin_offset, file_size);

    }

    // 重启升级固件

    if (ret == RT_EOK) {

        rt_kprintf("Download firmware to flash success.\n");

        rt_kprintf("System now will restart…\n");

        rt_thread_delay(rt_tick_from_millisecond(5));

        // Reset the device, Start new firmware

        extern void rt_hw_cpu_reset(void);

        rt_hw_cpu_reset();

    } else {

        rt_kprintf("Download firmware failed!\n");

    }

__exit:

    close(fd);

    return ret;

}

void sdota(int argc, char **argv)

{

    sdOtaDownload(FIRMWARE_PATH);

}

MSH_CMD_EXPORT(sdota, "The sd card firmware is upgraded");

该软件包会自动勾选webclient软件包：

HTTP升级源码位置：

使用示例：

http_ota http://192.168.0.108:8080/download/rtthread.rbl