【XR806开发板试用】xr806使用tcp socket与手机通信-编程知识

本文为极术社区XR806开发板活动试用文章。
参考：基于星辰处理器的全志XR806开源鸿蒙开发板上手体验搭建环境。并成功编译。

项目源码： https://gitee.com/kingwho/smart-home

在同一个局域网中，手机与xr806连接后，手机 APP 每隔 1s，发送按键的值给xr806，用于控制xr806的led，然后xr806在返回按键，温度，适度（温度，适度为模拟数据）数据给手机app显示。

将 smart_home 放入 device/xradio/xr806/ohosdemo 下的目录，并修改 device/xradio/xr806/ohosdemo/BUILD.gn 为

group("ohosdemo") {deps = [#"hello_demo:app_hello",#"iot_peripheral:app_peripheral",#"wlan_demo:app_WlanTest","smart_home:app_smart_home",]
}

目录结构

.
├── BUILD.gn
└── src├── main.c├── tcp_net_socket.c└── tcp_net_socket.h

使用 WIFI 编译时会报错，进行如下操作即可，在随后的编译中可能还会出现，再次如下操作执行即可。

cd device/xradio/xr806/xr_skylark/project/demo/wlan_ble_demo/image/xr806
cp image_wlan_ble.cfg image_wlan_ble.cfg.bk
cat image_auto_cal.cfg > image_wlan_ble.cfg

cjson使用这些宏会报错，建议直接使用 cjson 宏定义后面函数。

#define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull())
#define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
#define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
#define cJSON_AddBoolToObject(object,name,b) cJSON_AddItemToObject(object, name, cJSON_CreateBool(b))
#define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
#define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s))
#define cJSON_AddRawToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateRaw(s))

xr806连接WIFI后 IP地址可由串口输出打印查看

[net INF] msg <wlan scan success>
GetScanInfoList Success.
AddDeviceConfig Success.
[net INF] no need to switch wlan mode 0
en1: Trying to associate with 94:83:c4:0e:70:be (SSID='GL-MT300N-V2-0be' freq=2437 MHz)
ConnectTo Success
en1: Associated with 94:83:c4:0e:70:be
en1: WPA: Key negotiation completed with 94:83:c4:0e:70:be [PTK=CCMP GTK=CCMP]
en1: CTRL-EVENT-CONNECTED - Connection to 94:83:c4:0e:70:be completed [id=0 id_str=]
[net INF] msg <wlan connected>
[net INF] netif is link up
[net INF] start DHCP...
[net INF] netif (IPv4) is up
[net INF] address: 192.168.8.248
[net INF] gateway: 192.168.8.1
[net INF] netmask: 255.255.255.0
[net INF] msg <network IPv6 state>
[net INF] IPv6 addr state change: 0x0 --> 0x1
[net INF] msg <>

xr806 的固件更新后，需要使用下载器软件重新加载下固件，否则下载的可能还是上次的固件。

BUILD.gn

import("//device/xradio/xr806/liteos_m/config.gni")static_library("app_smart_home") {configs = []sources = ["src/main.c","src/tcp_net_socket.c",]cflags = board_cflagsinclude_dirs = board_include_dirsinclude_dirs += ["//kernel/liteos_m/kernel/arch/include","//base/iot_hardware/peripheral/interfaces/kits","//utils/native/lite/include","//foundation/communication/wifi_lite/interfaces/wifiservice","//third_party/lwip/src/include","//third_party/cJSON",]
}

tcp_net_socket.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lwip/sockets.h"int tcp_server_init(int port)
{int sfd = 0;struct sockaddr_in saddr;sfd = socket(AF_INET,SOCK_STREAM,0);memset(&saddr, 0, sizeof(struct sockaddr));saddr.sin_family  = AF_INET;saddr.sin_port    = htons(port);saddr.sin_addr.s_addr = INADDR_ANY;bind(sfd, (struct  socket*)&saddr, sizeof(struct sockaddr));listen(sfd,5);return sfd;
}int tcp_server_accept(int sfd)
{int cfd = 0;struct  sockaddr_in caddr;memset(&caddr, 0, sizeof(struct sockaddr));int addrl = sizeof(struct sockaddr);cfd = accept(sfd , (struct sockaddr*)&caddr , &addrl);return cfd;
}

main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ohos_init.h"
#include "kernel/os/os.h"
#include "iot_gpio.h"
#include "wifi_device.h"
#include "cJSON.h"
#include "lwip/sockets.h"
#include "tcp_net_socket.h"static void wifi_connect(char *ssid, char *passwd);
static OS_Thread_t g_main_thread;static void MainThread(void *arg)
{unsigned int led_pin = 21; /* GPIOA_PIN21 */unsigned int key_pin = 11; /* GPIOA_PIN11 */IotGpioValue key_value;int led_value = 0;unsigned int tem = 0, hum = 0, s = 0;cJSON* dev_dat = NULL;int sfd = 0;int cfd = 0;char send_buf[512] = {0};char recv_buf[512] = {0};wifi_connect("GL-MT300N-V2-0be", "goodlife");IoTGpioInit(led_pin);IoTGpioSetDir(led_pin, IOT_GPIO_DIR_OUT);IoTGpioInit(key_pin);IoTGpioSetDir(key_pin, IOT_GPIO_DIR_IN);sfd = tcp_server_init(8080);cfd = tcp_server_accept(sfd);while (1) {srand( s++ );tem = rand()%10 + 20;hum = rand()%20 + 40;IoTGpioGetInputVal(key_pin, &key_value);printf("kw : hello world! key : %d tem : %d hum : %d\r\n", key_value, tem, hum);IoTGpioSetOutputVal(led_pin, led_value);recv(cfd, recv_buf, sizeof(recv_buf), 0);memset(send_buf, 0, sizeof(send_buf));sprintf(send_buf, "{\"led\":\"%d\",\"key\":\"%d\",\"tem\":\"%d\",\"hum\":\"%d\"}",\led_value, key_value, tem, hum);		send(cfd,send_buf, strlen(send_buf),0);dev_dat = cJSON_Parse(recv_buf);led_value = cJSON_GetObjectItem(dev_dat, "led")->valuestring[0] - '0';		printf("led data : %d\r\n", led_value);cJSON_Delete(dev_dat);}}static void wifi_connect(char *ssid, char *passwd)
{char *ssid_want_connect = ssid;char *psk = passwd;if (WIFI_SUCCESS != EnableWifi()) {printf("Error: EnableWifi fail.\n");return;}printf("EnableWifi Success.\n");if (WIFI_STA_ACTIVE == IsWifiActive())printf("Wifi is active.\n");OS_Sleep(1);if (WIFI_SUCCESS != Scan()) {printf("Error: Scan fail.\n");return;}printf("Wifi Scan Success.\n");OS_Sleep(1);WifiScanInfo scan_results[30];unsigned int scan_num = 30;if (WIFI_SUCCESS != GetScanInfoList(scan_results, &scan_num)) {printf("Error: GetScanInfoList fail.\n");return;}WifiDeviceConfig config = { 0 };int netId = 0;int i;for (i = 0; i < scan_num; i++) {if (0 == strcmp(scan_results[i].ssid, ssid_want_connect)) {memcpy(config.ssid, scan_results[i].ssid,WIFI_MAX_SSID_LEN);memcpy(config.bssid, scan_results[i].bssid,WIFI_MAC_LEN);strcpy(config.preSharedKey, psk);config.securityType = scan_results[i].securityType;config.wapiPskType = WIFI_PSK_TYPE_ASCII;config.freq = scan_results[i].frequency;break;}}if (i >= scan_num) {printf("Error: No found ssid in scan_results\n");return;}printf("GetScanInfoList Success.\n");if (WIFI_SUCCESS != AddDeviceConfig(&config, &netId)) {printf("Error: AddDeviceConfig Fail\n");return;}printf("AddDeviceConfig Success.\n");if (WIFI_SUCCESS != ConnectTo(netId)) {printf("Error: ConnectTo Fail\n");return;}printf("ConnectTo Success\n");OS_Sleep(3);WifiLinkedInfo get_linked_res;if (WIFI_SUCCESS != GetLinkedInfo(&get_linked_res)) {printf("Error: GetLinkedInfo Fail\n");return;}printf("GetLinkedInfo Success.\n");printf("ssid: %s\n", get_linked_res.ssid);printf("bssid: ");for (int j = 0; j < WIFI_MAC_LEN; j++) {printf("%02X", get_linked_res.bssid[j]);}printf("\n");printf("rssi: %d\n", get_linked_res.rssi);unsigned char get_mac_res[WIFI_MAC_LEN];if (WIFI_SUCCESS != GetDeviceMacAddress(get_mac_res)) {printf("Error: GetDeviceMacAddress Fail\n");return;}printf("GetDeviceMacAddress Success.\n");for (int j = 0; j < WIFI_MAC_LEN - 1; j++) {printf("%02X:", get_mac_res[j]);}printf("%02X\n", get_mac_res[WIFI_MAC_LEN - 1]);}
void SmartHome(void)
{if (OS_ThreadCreate(&g_main_thread, "MainThread", MainThread, NULL,OS_THREAD_PRIO_APP, 8 * 1024) != OS_OK) {printf("[ERR] Create MainThread Failed\n");}
}
SYS_RUN(SmartHome);

APP 采用 APIClode 开发，使用 html js 进行开发.
APICloude Studio 软件下载，以及使用：
https://docs.apicloud.com/apicloud3/#wifi-preview
手机安装 Apploader，可以进行调试
安装Apploader下载： https://docs.apicloud.com/Download/download
将 SmartHome 导入 APICloude Studio
html/main.html 对应登录界面, 如下可修改默认 IP 和端口号

    <div id="bt_log"><form name="myForm" action="" onsubmit="return validateForm()" method="post"><div><label>IP地址</label><input type="text" name="ip" value="192.168.8.248"></div><div><label>端口号</label><input type="text" name="port" value="8080"></div><div><input type="submit" class="btn" value="登录" onmouseover="this.style.backgroundPosition='left -36px'"onmouseout="this.style.backgroundPosition='left top'"></div></form></div>

在这里插入图片描述