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前言：前邊講過stm32通用bootloader的實現方法，沒有看過的，可以參考這一篇文章：STM32通用Bootloader——FOTA，這次將在上篇bootloader的基礎上，介紹app如何通過多種固件下載器實現OTA升級。

此項目硬件使用的是STM32F429開發板，代碼全部使用RT-Thread Studio搭積木的方式實現，僅僅改動了幾行代碼，開發效率非常高。此項目的地址：https://gitee.com/Aladdin-Wang/RT-FOTA-STM32L431.git

使用到的軟件包和組件：

在這里插入圖片描述

1.準備工作

1.1 新建工程

由于此項目使用的esp8266需要一個串口，我使用的是uart2，所以需要還需要配置uart2：

增加uart接收緩沖區大小：

1.2 打開fal和at device軟件包

配置fal軟件包

配置sfud組件

配置SPI

配置fal_cfg.h

1#ifndef_FAL_CFG_H_ 2#define_FAL_CFG_H_ 3 4#include 5#include 6 7#defineFLASH_SIZE_GRANULARITY_16K(4*16*1024) 8#defineFLASH_SIZE_GRANULARITY_64K(64*1024) 9#defineFLASH_SIZE_GRANULARITY_128K(7*128*1024) 10 11#defineSTM32_FLASH_START_ADRESS_16KSTM32_FLASH_START_ADRESS 12#defineSTM32_FLASH_START_ADRESS_64K(STM32_FLASH_START_ADRESS_16K+FLASH_SIZE_GRANULARITY_16K) 13#defineSTM32_FLASH_START_ADRESS_128K(STM32_FLASH_START_ADRESS_64K+FLASH_SIZE_GRANULARITY_64K) 14/*=====================FlashdeviceConfiguration=========================*/ 15externconststructfal_flash_devstm32_onchip_flash_16k; 16externconststructfal_flash_devstm32_onchip_flash_64k; 17externconststructfal_flash_devstm32_onchip_flash_128k; 18externstructfal_flash_devnor_flash0; 19 20/*flashdevicetable*/ 21#defineFAL_FLASH_DEV_TABLE 22{ 23&stm32_onchip_flash_16k, 24&stm32_onchip_flash_64k, 25&stm32_onchip_flash_128k, 26&nor_flash0, 27} 28/*======================PartitionConfiguration==========================*/ 29#ifdefFAL_PART_HAS_TABLE_CFG 30/*partitiontable*/ 31#defineFAL_PART_TABLE 32{ 33{FAL_PART_MAGIC_WROD,"bootloader","onchip_flash_16k",0,FLASH_SIZE_GRANULARITY_16K,0}, 34{FAL_PART_MAGIC_WROD,"param","onchip_flash_64k",0,FLASH_SIZE_GRANULARITY_64K,0}, 35{FAL_PART_MAGIC_WROD,"app","onchip_flash_128k",0,FLASH_SIZE_GRANULARITY_128K,0}, 36{FAL_PART_MAGIC_WROD,"ef","W25Q128",0,1024*1024,0}, 37{FAL_PART_MAGIC_WROD,"download","W25Q128",1024*1024,512*1024,0}, 38{FAL_PART_MAGIC_WROD,"factory","W25Q128",(1024+512)*1024,512*1024,0}, 39} 40#endif/*FAL_PART_HAS_TABLE_CFG*/ 41 42#endif/*_FAL_CFG_H_*/

初始化spi flash和fal軟件包

1#include 2#include"spi_flash.h" 3#include"spi_flash_sfud.h" 4#include"drv_spi.h" 5 6#ifdefined(RT_USING_SFUD) 7staticintrt_hw_spi_flash_init(void) 8{ 9__HAL_RCC_GPIOF_CLK_ENABLE(); 10rt_hw_spi_device_attach("spi5","spi50",GPIOF,GPIO_PIN_6); 11 12if(RT_NULL==rt_sfud_flash_probe("W25Q128","spi50")) 13{ 14return-RT_ERROR; 15} 16 17returnRT_EOK; 18} 19INIT_COMPONENT_EXPORT(rt_hw_spi_flash_init); 20#endif1intfs_init(void) 2{ 3/*partitioninitialized*/ 4fal_init(); 5return0; 6} 7INIT_ENV_EXPORT(fs_init);

配置at device軟件包

1.3 配置中斷重定向

1/** 2*Functionota_app_vtor_reconfig 3*DescriptionSetVectorTablebaselocationtothestartaddrofapp(RT_APP_PART_ADDR). 4*/ 5staticintota_app_vtor_reconfig(void) 6{ 7#defineNVIC_VTOR_MASK0x3FFFFF80 8/*SettheVectorTablebaselocationbyuserapplicationfirmwaredefinition*/ 9SCB->VTOR=0x8020000&NVIC_VTOR_MASK; 10 11return0; 12} 13INIT_BOARD_EXPORT(ota_app_vtor_reconfig);

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

2.阿里云物聯網平臺OTA

注冊 LinkPlatform 平臺

創建產品

產品詳情：

添加設備

添加自定義Topic

配置ali iotkit軟件包
將剛才新建的阿里云設備信息填寫到配置信息里：

將軟件包的示例mqtt-example.c和ota_mqtt-example.c拷貝到applications目錄備用

配置mbedtls軟件包

更改ota_mqtt-example.c中的部分代碼：

1staticint_ota_mqtt_client(void) 2{ 3#defineOTA_BUF_LEN(16385) 4#defineDEFAULT_DOWNLOAD_PART"download" 5intrc=0,ota_over=0; 6void*pclient=NULL,*h_ota=NULL; 7iotx_conn_info_ptpconn_info; 8iotx_mqtt_param_tmqtt_params; 9 10//FILE*fp; 11staticcharbuf_ota[OTA_BUF_LEN]; 12conststructfal_partition*dl_part=RT_NULL; 13 14//if(NULL==(fp=fopen("ota.bin","wb+"))){ 15//EXAMPLE_TRACE("openfilefailed"); 16//gotodo_exit; 17//} 18 19/**port; 36mqtt_params.host=pconn_info->host_name; 37mqtt_params.client_id=pconn_info->client_id; 38mqtt_params.username=pconn_info->username; 39mqtt_params.password=pconn_info->password; 40mqtt_params.pub_key=pconn_info->pub_key; 41 42mqtt_params.request_timeout_ms=2000; 43mqtt_params.clean_session=0; 44mqtt_params.keepalive_interval_ms=60000; 45mqtt_params.read_buf_size=OTA_MQTT_MSGLEN; 46mqtt_params.write_buf_size=OTA_MQTT_MSGLEN; 47 48mqtt_params.handle_event.h_fp=event_handle; 49mqtt_params.handle_event.pcontext=NULL; 50 51/*ConstructaMQTTclientwithspecifyparameter*/ 52pclient=IOT_MQTT_Construct(&mqtt_params); 53if(NULL==pclient){ 54EXAMPLE_TRACE("MQTTconstructfailed"); 55rc=-1; 56gotodo_exit; 57} 58h_ota=IOT_OTA_Init(g_product_key,g_device_name,pclient); 59if(NULL==h_ota){ 60rc=-1; 61EXAMPLE_TRACE("initializeOTAfailed"); 62gotodo_exit; 63} 64 65 66do{ 67uint32_tfirmware_valid; 68 69EXAMPLE_TRACE("waitotaupgradecommand...."); 70 71/*handletheMQTTpacketreceivedfromTCPorSSLconnection*/ 72IOT_MQTT_Yield(pclient,200); 73 74if(IOT_OTA_IsFetching(h_ota)){ 75uint32_tlast_percent=0,percent=0; 76charmd5sum[33]; 77charversion[128]={0}; 78uint32_tlen,size_downloaded,size_file; 79IOT_OTA_Ioctl(h_ota,IOT_OTAG_FILE_SIZE,&size_file,4); 80/*Getdownloadpartitioninformationanderasedownloadpartitiondata*/ 81if((dl_part=fal_partition_find(DEFAULT_DOWNLOAD_PART))==RT_NULL) 82{ 83LOG_E("Firmwaredownloadfailed!Partition(%s)finderror!","download"); 84rc=-1; 85gotodo_exit; 86} 87 88LOG_I("Starteraseflash(%s)partition!",dl_part->name); 89 90if(fal_partition_erase(dl_part,0,size_file)name); 93rc=-1; 94gotodo_exit; 95} 96LOG_I("Eraseflash(%s)partitionsuccess!",dl_part->name); 97 98rt_uint32_tcontent_pos=0,content_write_sz; 99 100do{ 101 102len=IOT_OTA_FetchYield(h_ota,buf_ota,OTA_BUF_LEN,1); 103if(len>0){ 104content_write_sz=fal_partition_write(dl_part,content_pos,(uint8_t*)buf_ota,len); 105if(content_write_sz!=len) 106{ 107LOG_I("WriteOTAdatatofilefailed"); 108 109IOT_OTA_ReportProgress(h_ota,IOT_OTAP_BURN_FAILED,RT_NULL); 110 111gotodo_exit; 112} 113else 114{ 115content_pos=content_pos+len; 116LOG_I("receive%dbytes,totalrecieve:%dbytes",content_pos,size_file); 117} 118}else{ 119IOT_OTA_ReportProgress(h_ota,IOT_OTAP_FETCH_FAILED,NULL); 120EXAMPLE_TRACE("otafetchfail"); 121} 122 123/*getOTAinformation*/ 124IOT_OTA_Ioctl(h_ota,IOT_OTAG_FETCHED_SIZE,&size_downloaded,4); 125IOT_OTA_Ioctl(h_ota,IOT_OTAG_FILE_SIZE,&size_file,4); 126 127last_percent=percent; 128percent=(size_downloaded*100)/size_file; 129if(percent-last_percent>0){ 130IOT_OTA_ReportProgress(h_ota,percent,NULL); 131} 132IOT_MQTT_Yield(pclient,100); 133}while(!IOT_OTA_IsFetchFinish(h_ota)); 134 135IOT_OTA_Ioctl(h_ota,IOT_OTAG_MD5SUM,md5sum,33); 136IOT_OTA_Ioctl(h_ota,IOT_OTAG_VERSION,version,128); 137IOT_OTA_Ioctl(h_ota,IOT_OTAG_CHECK_FIRMWARE,&firmware_valid,4); 138if(0==firmware_valid){ 139EXAMPLE_TRACE("Thefirmwareisinvalid"); 140}else{ 141EXAMPLE_TRACE("Thefirmwareisvalid"); 142IOT_OTA_ReportVersion(h_ota,version); 143 144LOG_I("Downloadfirmwaretoflashsuccess."); 145LOG_I("Systemnowwillrestart..."); 146 147HAL_SleepMs(1000); 148 149/*Resetthedevice,Startnewfirmware*/ 150externvoidrt_hw_cpu_reset(void); 151rt_hw_cpu_reset(); 152} 153 154ota_over=1; 155} 156HAL_SleepMs(2000); 157}while(!ota_over); 158 159HAL_SleepMs(1000); 160 161do_exit: 162 163if(NULL!=h_ota){ 164IOT_OTA_Deinit(h_ota); 165} 166 167if(NULL!=pclient){ 168IOT_MQTT_Destroy(&pclient); 169} 170 171returnrc; 172}

編譯工程，將bin文件上傳到阿里云：

阿里云不支持rbl格式的文件，直接將rt_ota_packaging_tool生成的rbl文件后綴改為bin，上傳即可。