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XR806不仅硬件功能多，XR806也提供了功能极其丰富的SDK，几天体验下来非常容易上手。常见的功能几乎都有相应的cmd或demo实现，HAL也做得非常全面，非常适合快速开发。这一点超级好评！本文章要实现的无线OTA也基于该SDK。 环境搭建本实验主机环境为ubuntu，并基于freertos sdk开发，这里不详述，全志在线以及其他文章有很多介绍了。 https://xr806.docs.aw-ol.com/ 无线OTA简述OTA全称空中下载技术，及通过网络在线更新软件。当产品发布以后，若能支持网络升级，那将省去不少人力。所以OTA对于物联网产品是十分重要的功能。XR806 SDK中提供了两种升级方式：通过文件系统升级；通过http网络升级。同时也提供了完整的分区备份/校验/加密等功能，使得升级功能不容易被入侵。 无线OTA实验步骤hello_demo工程位于project/demo/hello_demo。该工程虽然只在main.c中打印了"hello world"，看似功能简单。但它其实还支持许多cmd，位于project/demo/hello_demo/command.c： static const struct cmd_data g_main_cmds[] = { #if PRJCONF_NET_EN { "net", cmd_net_exec, CMD_DESC("network command") }, #endif { "mem", cmd_mem_exec, CMD_DESC("memory command") }, { "heap", cmd_heap_exec, CMD_DESC("heap use information command") }, { "thread", cmd_thread_exec, CMD_DESC("thread information command") }, { "upgrade", cmd_upgrade_exec, CMD_DESC("upgrade command") }, { "reboot", cmd_reboot_exec, CMD_DESC("reboot command") }, #ifdef CONFIG_OTA { "ota", cmd_ota_exec, CMD_DESC("over the airtechnology upgrade commands") }, #endif { "pm", cmd_pm_exec, CMD_DESC("power management command") }, { "efpg", cmd_efpg_exec, CMD_DESC("efpg command") }, { "help", cmd_main_help_exec, CMD_DESC(CMD_HELP_DESC) }, };我们需要在menuconfig中使能OTA和NET（默认已经全部支持）。所以hello_demo工程默认是支持http网络以及OTA功能，基础条件都具备，接下来看看该如何使用。 1. 使用PHOENIXMC工具编译烧录HELLO工程sudo ./phoenixMC -i ../out/xr_system.img
烧录完成：
打开串口查看日志：
sudo minicom -D /dev/ttyUSB0 -b 115200
2. 修改HELLO工程，编译生成即将要升级的固件修改hello.c，将打印修改为“OTA OK!” int main(void) { platform_init(); while (1) { OS_Sleep(10); printf("OTA OK! @ %u sec\n", OS_GetTicks()); //修改打印 } return 0; }重新编译 yhz@lab:~/work/misc/xr806_sdk$ make build yhz@lab:~/work/misc/xr806_sdk$ md5sum out/xr_system.img 6e79ddbdad10928c16a50805c2ca0f1c out/xr_system.img3. 使用NET CMD命令连接WIFI
Set STA mode： $ net mode sta <ACK> 200 OK [net INF] no need to switch wlan mode 0 Enable STA： $ net sta enable <ACK> 200 OK Config SAT： $ net sta config dmesg-4g 88880000 //wifi名称和密码 <ACK> 200 OK Connect wifi： $ net sta connect <ACK> 200 OK en1: Trying to associate with 34:ca:81:89:da:fc (SSID='dmesg-4g' freq=2462 MHz) en1: WPA: Key negotiation completed with 34:ca:81:89:da:fc [PTK=CCMP GTK=CCMP] en1: CTRL-EVENT-CONNECTED - Connection to 34:ca:81:89:da:fc completed [id=0 id_str=] [net INF] msg <wlan connected> [net INF] netif is link up [net INF] start DHCP... WAR drop=1135, fctl=0x00d0. [net INF] netif (IPv4) is up [net INF] address: 192.168.10.5 [net INF] gateway: 192.168.10.1 [net INF] netmask: 255.255.255.0 [net INF] msg <network up> Check： $ net ifconfig status <ACK> 200 en1 up, address:192.168.10.5 gateway:192.168.10.1 netmask:255.255.255.0 $ net ping 192.168.10.11 <ACK> 200 OK PING 192.168.10.11 108 bytes of data. 100 bytes from 192.168.10.11: icmp_seq=1 time=9 ms 100 bytes from 192.168.10.11: icmp_seq=2 time=6 ms 100 bytes from 192.168.10.11: icmp_seq=3 time=14 ms --- 192.168.10.11 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 3029ms rtt min/avg/max/mdev = 6/9/14/8 ms至此，wifi配置完成，xr806已成功联网。接下来配置镜像服务器。 4. 使用APACHE2搭建HTTP服务器 sudo apt-get update sudo apt install apache2 sudo ufw app list sudo ufw allow 'Apache' sudo systemctl status apache2整个搭建过程很简单。apache2的默认文件位置位于/var/www/html/目录下。
给该文件夹增加权限： sudo chmod 777 -R /var/www/html/这样服务器环境就搭建好了，将待OTA的镜像放到/var/www/html/目录下： yhz@lab:~/work/misc/xr806_sdk$ cp out/xr_system.img /var/www/html/ yhz@lab:~/work/misc/xr806_sdk$ yhz@lab:~/work/misc/xr806_sdk$ md5sum /var/www/html/xr_system.img 6e79ddbdad10928c16a50805c2ca0f1c /var/www/html/xr_system.img5. 开始OTA在第三步中我们已经连接了wifi，此时xr806可以从服务器获取新的镜像。使用ota命令开始升级： $ ota http http://192.168.10.11/xr_system.img <ACK> 200 OK OTA: erase flash... OTA: start loading image... Hello world! @ 41063083 sec OTA: loading image (50 KB)... OTA: loading image (101 KB)... OTA: loading image (150 KB)... OTA: loading image (200 KB)... OTA: loading image (251 KB)... OTA: loading image (300 KB)... OTA: loading image (350 KB)... OTA: loading image (401 KB)... OTA: loading image (450 KB)... OTA: loading image (500 KB)... OTA: loading image (551 KB)... OTA: loading image (600 KB)... OTA: loading image (651 KB)... OTA: loading image (701 KB)... OTA: loading image (750 KB)... OTA: loading image (801 KB)... OTA: loading image (850 KB)... OTA: loading image (901 KB)... OTA: loading image (951 KB)... OTA: loading image (1000 KB)... OTA: finish loading image(0x000fab60) OTA: finish checkinuse default flash chip mJedec 0x0 [FD I]: mode: 0x10, freq: 96000000Hz, drv: 0 [FD I]: jedec: 0x0, suspend_support: 1 mode select:e wlan information =================================================== firmware: version : R0-XR_C07.08.52.67_ULP_R_02.132 Jan 10 2023 19:14:11-Y02.132 buffer : 8 driver: version : XR_V02.06.10 mac address: in use : 0c:69:88:39:e6:01 in use : 0c:69:88:39:e6:02 ==================================================================== wlan mode:a platform information =============================================== XR806 SDK v1.2.2 Oct 24 2023 00:13:09 62800400 heap space [0x216014, 0x24bc00), size 220140 cpu clock 160000000 Hz HF clock 40000000 Hz sdk option: XIP : enable INT LF OSC : enable INT LDO : select INT LDO / EXT PWR: enable SIP flash : enable mac address: efuse : 80:74:84:05:b2:56 in use : 0c:69:88:39:e6:01 ==================================================================== $ $ OTA OK! @ 10165 sec $ OTA OK! @ 20165 sec至此，OTA升级完毕。 感慨一下，xr806的硬件和SDK功能很强大，开发起来真的很快~~~!
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