#2020征文-开发板#基于TCP控制鸿蒙3861三色灯板亮灭(附demo指导) 精华

import("//build/lite/config/component/lite_component.gni")

lite_component("app") {
    features = [
        "iothardware:wifi_demo",
    ]
}
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static void OnWifiConnectionChanged(int state, WifiLinkedInfo* info)
{
    if (!info) return;

    printf("%s %d, state = %d, info = \r\n", __FUNCTION__, __LINE__, state);
    PrintLinkedInfo(info);

    if (state == WIFI_STATE_AVALIABLE) {
        g_connected = 1;
    } else {
        g_connected = 0;
    }
}
static void OnWifiScanStateChanged(int state, int size)
{
    printf("%s %d, state = %X, size = %d\r\n", __FUNCTION__, __LINE__, state, size);
}
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static void PrintLinkedInfo(WifiLinkedInfo* info)
{
    if (!info) return;
    static char macAddress[32] = {0};
    unsigned char* mac = info->bssid;
    snprintf(macAddress, sizeof(macAddress), "%02X:%02X:%02X:%02X:%02X:%02X",
        mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
    printf("bssid: %s, rssi: %d, connState: %d, reason: %d, ssid: %s\r\n",
        macAddress, info->rssi, info->connState, info->disconnectedReason, info->ssid);
}
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(void)arg;
WifiErrorCode errCode;
WifiEvent eventListener = {
    .OnWifiConnectionChanged = OnWifiConnectionChanged,
    .OnWifiScanStateChanged = OnWifiScanStateChanged
};
WifiDeviceConfig apConfig = {0};
int netId = -1;
osDelay(10);
errCode = RegisterWifiEvent(&eventListener);
printf("RegisterWifiEvent: %d\r\n", errCode);
strcpy(apConfig.ssid, "helloworld");
strcpy(apConfig.preSharedKey, "12345678");
apConfig.securityType = WIFI_SEC_TYPE_PSK;
errCode = EnableWifi();
printf("EnableWifi: %d\r\n", errCode);
osDelay(10);
errCode = AddDeviceConfig(&apConfig, &netId);
printf("AddDeviceConfig: %d\r\n", errCode);
g_connected = 0;
errCode = ConnectTo(netId);
printf("ConnectTo(%d): %d\r\n", netId, errCode);
while (!g_connected) {
    osDelay(10);
}
printf("g_connected: %d\r\n", g_connected);
osDelay(50);
struct netif* iface = netifapi_netif_find("wlan0");
if (iface) {
    err_t ret = netifapi_dhcp_start(iface);
    printf("netifapi_dhcp_start: %d\r\n", ret);
    osDelay(200); // wait DHCP server give me IP
    ret = netifapi_netif_common(iface, dhcp_clients_info_show, NULL);
    printf("netifapi_netif_common: %d\r\n", ret);
}
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ssize_t retval = 0;
int sockfd = socket(AF_INET, SOCK_STREAM, 0); // TCP socket
unsigned short port=5678;
struct sockaddr_in serverAddr = {0};
serverAddr.sin_family = AF_INET;  // AF_INET表示IPv4协议
serverAddr.sin_port = htons(port);  // 端口号，从主机字节序转为网络字节序
if (inet_pton(AF_INET, PARAM_SERVER_ADDR, &serverAddr.sin_addr) <= 0) {  // 将主机IP地址从“点分十进制”字符串 转化为 标准格式（32位整数）
printf("inet_pton failed!\r\n");
goto do_cleanup;
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    if (connect(sockfd, (struct sockaddr *)&serverAddr, sizeof(serverAddr)) < 0) {
        printf("connect failed!\r\n");
        goto do_cleanup;
    }
    printf("connect to server %s success!\r\n", PARAM_SERVER_ADDR);
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retval = recv(sockfd, &response, sizeof(response), 0);
if (retval <= 0) {
    printf("send response from server failed or done, %ld!\r\n", retval);
    goto do_cleanup;
}
response[retval] = '\0';
printf("recv response{%s} %ld from server done!\r\n", response, retval);
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    GpioInit();
    IoSetFunc(RED_LED_PIN_NAME,RED_LED_PIN_FUNCTION);
    IoSetFunc(GREEN_LED_PIN_NAME,GREEN_LED_PIN_FUNCTION);
    IoSetFunc(RELLOW_LED_PIN_NAME,RELLOW_LED_PIN_FUNCTION);
    GpioSetDir(RED_LED_PIN_NAME,WIFI_IOT_GPIO_DIR_OUT);
    GpioSetDir(GREEN_LED_PIN_NAME,WIFI_IOT_GPIO_DIR_OUT);
    GpioSetDir(RELLOW_LED_PIN_NAME,WIFI_IOT_GPIO_DIR_OUT);
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    if(strncmp(RED_ON,response,5) == 0){
        printf("red on----------------");
        GpioSetOutputVal(RED_LED_PIN_NAME,LED_BRIGHT);
    }
    else if(strncmp(RED_OFF,response,6) == 0){
        printf("red off--------------");
        GpioSetOutputVal(RED_LED_PIN_NAME,LED_DARK);
    }else if(strncmp(GREEN_ON,response,7) == 0){
        printf("red on----------------");
        GpioSetOutputVal(GREEN_LED_PIN_NAME,LED_BRIGHT);
    }
    else if(strncmp(GREEN_OFF,response,8) == 0){
        printf("red off--------------");
        GpioSetOutputVal(GREEN_LED_PIN_NAME,LED_DARK);
    }else
        if(strncmp(RELLOW_ON,response,8) == 0){
        printf("red on----------------");
        GpioSetOutputVal(RELLOW_LED_PIN_NAME,LED_BRIGHT);
    }
    else if(strncmp(RELLOW_OFF,response,9) == 0){
        printf("red off--------------");
        GpioSetOutputVal(RELLOW_LED_PIN_NAME,LED_DARK);
    }else
    {
        printf("error index");
    }
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