零代码玩转OTA升级

AIoT-KK

发布于 2020-07-13 16:57:50

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发布于 2020-07-13 16:57:50

前言： 前边讲过stm32通用bootloader的实现方法，没有看过的，可以参考这一篇文章：STM32通用Bootloader——FOTA，这次将在上篇bootloader的基础上，介绍app如何通过多种固件下载器实现OTA升级。

先看下演示视频，此视频演示了四种升级方式，分别是：

阿里云物联网平台OTA
HTTP OTA
Ymodem OTA
不用app，使用Bootloader中的Ymodem OTA

http://mpvideo.qpic.cn/0bf2kqaamaaaeyagvopme5pfavgdazkaabqa.f10002.mp4?dis_k=4e2ee09b44f51d627de5bf0b01b98a48&dis_t=1594630606

此项目硬件使用的是STM32F429开发板，代码全部使用RT-Thread Studio搭积木的方式实现，仅仅改动了几行代码，开发效率非常高。此项目的地址：https://gitee.com/Aladdin-Wang/RT-FOTA-STM32L431.git

使用到的软件包和组件：

在这里插入图片描述

1.准备工作

1.1 新建工程

由于此项目使用的esp8266需要一个串口，我使用的是uart2，所以需要还需要配置uart2：

增加uart接收缓冲区大小：

1.2 打开fal和at device软件包

配置fal软件包

配置sfud组件

配置SPI

配置fal_cfg.h

#ifndef _FAL_CFG_H_
#define _FAL_CFG_H_

#include <rtconfig.h>
#include <board.h>

#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;
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, "bootloader", "onchip_flash_16k",  0 , FLASH_SIZE_GRANULARITY_16K , 0}, \
    {FAL_PART_MAGIC_WROD, "param",      "onchip_flash_64k",  0 , FLASH_SIZE_GRANULARITY_64K , 0}, \
    {FAL_PART_MAGIC_WROD, "app",        "onchip_flash_128k", 0 , FLASH_SIZE_GRANULARITY_128K, 0}, \
    {FAL_PART_MAGIC_WROD, "ef",         "W25Q128",           0 , 1024 * 1024, 0}, \
    {FAL_PART_MAGIC_WROD, "download",   "W25Q128",          1024 * 1024 , 512 * 1024, 0}, \
    {FAL_PART_MAGIC_WROD, "factory",    "W25Q128",          (1024 + 512) * 1024 , 512 * 1024, 0}, \
}
#endif /* FAL_PART_HAS_TABLE_CFG */

#endif /* _FAL_CFG_H_ */

初始化spi flash和fal软件包

#include <rtthread.h>
#include "spi_flash.h"
#include "spi_flash_sfud.h"
#include "drv_spi.h"

#if defined(RT_USING_SFUD)
static int rt_hw_spi_flash_init(void)
{
    __HAL_RCC_GPIOF_CLK_ENABLE();
    rt_hw_spi_device_attach("spi5", "spi50", GPIOF, GPIO_PIN_6);

    if (RT_NULL == rt_sfud_flash_probe("W25Q128", "spi50"))
    {
        return -RT_ERROR;
    }

    return RT_EOK;
}
INIT_COMPONENT_EXPORT(rt_hw_spi_flash_init);
#endif

int fs_init(void)
{
    /* partition initialized */
    fal_init();
    return 0;
}
INIT_ENV_EXPORT(fs_init);

配置at device软件包

1.3 配置中断重定向

/**
 * Function    ota_app_vtor_reconfig
 * Description Set Vector Table base location to the start addr of app(RT_APP_PART_ADDR).
*/
static int ota_app_vtor_reconfig(void)
{
    #define NVIC_VTOR_MASK   0x3FFFFF80
    /* Set the Vector Table base location by user application firmware definition */
    SCB->VTOR = 0x8020000 & NVIC_VTOR_MASK;

    return 0;
}
INIT_BOARD_EXPORT(ota_app_vtor_reconfig);

烧录bootloader: bootloader的制作方法请参考官方的教程https://www.rt-thread.org/document/site/application-note/system/rtboot/an0028-rtboot/或者STM32通用Bootloader——FOTA

2.阿里云物联网平台OTA

注册 LinkPlatform 平台

创建产品

产品详情：

添加设备

添加自定义Topic

配置ali iotkit软件包 将刚才新建的阿里云设备信息填写到配置信息里：

将软件包的示例mqtt-example.c和ota_mqtt-example.c拷贝到applications目录备用

配置mbedtls软件包

更改ota_mqtt-example.c中的部分代码：

static int _ota_mqtt_client(void)
{
#define OTA_BUF_LEN        (16385)
#define DEFAULT_DOWNLOAD_PART "download"
    int rc = 0, ota_over = 0;
    void *pclient = NULL, *h_ota = NULL;
    iotx_conn_info_pt pconn_info;
    iotx_mqtt_param_t mqtt_params;

    // FILE *fp;
    static char buf_ota[OTA_BUF_LEN];
    const struct fal_partition * dl_part = RT_NULL;

    // if (NULL == (fp = fopen("ota.bin", "wb+"))) {
    //     EXAMPLE_TRACE("open file failed");
    //     goto do_exit;
    // }

    /**< get device info*/
    HAL_GetProductKey(g_product_key);
    HAL_GetDeviceName(g_device_name);
    HAL_GetDeviceSecret(g_device_secret);
    /**< end*/

    /* Device AUTH */
    if (0 != IOT_SetupConnInfo(g_product_key, g_device_name, g_device_secret, (void **)&pconn_info)) {
        EXAMPLE_TRACE("AUTH request failed!");
        rc = -1;
        goto do_exit;
    }

    /* Initialize MQTT parameter */
    memset(&mqtt_params, 0x0, sizeof(mqtt_params));

    mqtt_params.port = pconn_info->port;
    mqtt_params.host = pconn_info->host_name;
    mqtt_params.client_id = pconn_info->client_id;
    mqtt_params.username = pconn_info->username;
    mqtt_params.password = pconn_info->password;
    mqtt_params.pub_key = pconn_info->pub_key;

    mqtt_params.request_timeout_ms = 2000;
    mqtt_params.clean_session = 0;
    mqtt_params.keepalive_interval_ms = 60000;
    mqtt_params.read_buf_size = OTA_MQTT_MSGLEN;
    mqtt_params.write_buf_size = OTA_MQTT_MSGLEN;

    mqtt_params.handle_event.h_fp = event_handle;
    mqtt_params.handle_event.pcontext = NULL;

    /* Construct a MQTT client with specify parameter */
    pclient = IOT_MQTT_Construct(&mqtt_params);
    if (NULL == pclient) {
        EXAMPLE_TRACE("MQTT construct failed");
        rc = -1;
        goto do_exit;
    }
    h_ota = IOT_OTA_Init(g_product_key, g_device_name, pclient);
    if (NULL == h_ota) {
        rc = -1;
        EXAMPLE_TRACE("initialize OTA failed");
        goto do_exit;
    }


        do {
            uint32_t firmware_valid;

            EXAMPLE_TRACE("wait ota upgrade command....");

            /* handle the MQTT packet received from TCP or SSL connection */
            IOT_MQTT_Yield(pclient, 200);

            if (IOT_OTA_IsFetching(h_ota)) {
                uint32_t last_percent = 0, percent = 0;
                char md5sum[33];
                char version[128] = {0};
                uint32_t len, size_downloaded, size_file;
                IOT_OTA_Ioctl(h_ota, IOT_OTAG_FILE_SIZE, &size_file, 4);
                /* Get download partition information and erase download partition data */
                if ((dl_part = fal_partition_find(DEFAULT_DOWNLOAD_PART)) == RT_NULL)
                {
                    LOG_E("Firmware download failed! Partition (%s) find error!", "download");
                    rc = -1;
                    goto do_exit;
                }

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

                if (fal_partition_erase(dl_part, 0, size_file) < 0)
                {
                    LOG_E("Firmware download failed! Partition (%s) erase error!", dl_part->name);
                    rc = -1;
                    goto do_exit;
                }
                LOG_I("Erase flash (%s) partition success!", dl_part->name);

                rt_uint32_t content_pos = 0, content_write_sz;

                do {

                    len = IOT_OTA_FetchYield(h_ota, buf_ota, OTA_BUF_LEN, 1);
                    if (len > 0) {
                        content_write_sz = fal_partition_write(dl_part, content_pos, (uint8_t *)buf_ota, len);
                        if (content_write_sz !=  len)
                        {
                            LOG_I("Write OTA data to file failed");

                            IOT_OTA_ReportProgress(h_ota, IOT_OTAP_BURN_FAILED, RT_NULL);

                            goto do_exit;
                        }
                        else
                        {
                            content_pos = content_pos + len;
                            LOG_I("receive %d bytes, total recieve: %d bytes", content_pos, size_file);
                        }
                    } else {
                        IOT_OTA_ReportProgress(h_ota, IOT_OTAP_FETCH_FAILED, NULL);
                        EXAMPLE_TRACE("ota fetch fail");
                    }

                    /* get OTA information */
                    IOT_OTA_Ioctl(h_ota, IOT_OTAG_FETCHED_SIZE, &size_downloaded, 4);
                    IOT_OTA_Ioctl(h_ota, IOT_OTAG_FILE_SIZE, &size_file, 4);

                    last_percent = percent;
                    percent = (size_downloaded * 100) / size_file;
                    if (percent - last_percent > 0) {
                        IOT_OTA_ReportProgress(h_ota, percent, NULL);
                    }
                    IOT_MQTT_Yield(pclient, 100);
                } while (!IOT_OTA_IsFetchFinish(h_ota));

                IOT_OTA_Ioctl(h_ota, IOT_OTAG_MD5SUM, md5sum, 33);
                IOT_OTA_Ioctl(h_ota, IOT_OTAG_VERSION, version, 128);
                IOT_OTA_Ioctl(h_ota, IOT_OTAG_CHECK_FIRMWARE, &firmware_valid, 4);
                if (0 == firmware_valid) {
                    EXAMPLE_TRACE("The firmware is invalid");
                } else {
                    EXAMPLE_TRACE("The firmware is valid");
                    IOT_OTA_ReportVersion(h_ota, version);

                    LOG_I("Download firmware to flash success.");
                    LOG_I("System now will restart...");

                    HAL_SleepMs(1000);

                    /* Reset the device, Start new firmware */
                    extern void rt_hw_cpu_reset(void);
                    rt_hw_cpu_reset();
                }

                ota_over = 1;
            }
            HAL_SleepMs(2000);
        } while (!ota_over);

    HAL_SleepMs(1000);

do_exit:

    if (NULL != h_ota) {
        IOT_OTA_Deinit(h_ota);
    }

    if (NULL != pclient) {
        IOT_MQTT_Destroy(&pclient);
    }

    return rc;
}

编译工程，将bin文件上传到阿里云： 阿里云不支持rbl格式的文件，直接将rt_ota_packaging_tool生成的rbl文件后缀改为bin，上传即可。