HarmonyOS鸿蒙Next HiSpark IPC DIY Camera中hi3518-wifi的配置与使用

HarmonyOS鸿蒙Next HiSpark IPC DIY Camera中hi3518-wifi的配置与使用 【编译生成wifi可执行文件】 请参考以下示例代码编译可执行程序wpa_supplicant：

#include <dlfcn.h>
#include <pthread.h>
#include <stdio.h>
#include <string.h>

pthread_t g_wpaThread;

char* g_wpaArg[20] = {0};
int g_wpaArgc = 0;

static void* ThreadMain()
{
    printf("[WpaSample]init wpa_supplicant.\n");

    void *handleLibWpa = dlopen("/usr/lib/libwpa.so", RTLD_NOW | RTLD_LOCAL);
    if (handleLibWpa == NULL) {
        printf("[WpaSample]dlopen libwpa failed.\n");
        return NULL;
    }
    int (*func)(int, char **) = NULL;
    func = dlsym(handleLibWpa, "wpa_main");
    if (func == NULL) {
        dlclose(handleLibWpa);
        printf("[WpaSample]dlsym wpa_main failed.\n");
        return NULL;
    }
    int ret = func(g_wpaArgc, g_wpaArg);

    printf("[WpaSample]run wpa_main failed, ret:%d.\n", ret);
    for (int i = 0; i < g_wpaArgc; i++) {
        printf("[WpaSample]arg %d:%s.\n", i, g_wpaArg[i]);
    }

    if (dlclose(handleLibWpa) != 0) {
        printf("[WpaSample]dlclose libwpa failed.\n");
        return NULL;
    }
    return NULL;
}

int main(int argc, char *argv[])
{
    g_wpaArgc = argc;
    for (int i = 0; i < g_wpaArgc; i++) {
        g_wpaArg[i] = argv[i];
    }

    int ret = pthread_create(&g_wpaThread, NULL, ThreadMain, NULL);
    if (ret != 0) {
        printf("[WpaSample]create thread failed error:%s.\n", strerror(ret));
        return 1;
    }
    pthread_join(g_wpaThread, NULL);
    return 0;
}

【修改station模式的配置】 将以下配置写到配置文件wpa_supplicant.conf

country=GB
ctrl_interface=udp
network={
    #要连接的SSID
    ssid="example"
    #如果不需要加密就写key_mgmt=NONE
    #key_mgmt=NONE
    #如果需要加密就写这行密码
    psk="12345678"
}

【修改ap模式的配置】 将以下配置写到配置文件hostapd.conf

interface=wlan0
driver=hdf wifi
ctrl_interface=udp
ssid=testap
hw_mode=g
channel=1
ignore_broadcast_ssid=0
#下面是wpa2-psk类型加密的配置
#如果不需要加密可以删除
auth_algs=1
wpa=2
wpa_passphrase=12345678
rsn_pairwise=CCMP

【使用方法】

将wpa_supplicant、wpa_supplicant.conf、hostapd.conf拷贝到单板中（sdcard目录）

启动sta的命令：

./sdcard/wpa_supplicant -i wlan0 -c /sdcard/wpa_supplicant.conf

启动ap的命令：

./sdcard/hostapd -i wlan0 /sdcard/hostapd.conf

【WIFI设备检测】 进入OHOS界面后，输入ifconfig，检查wlan0网口是否加载正常，加载成功标识如下：

OHOS # ifconfig
wlan0 ip:0.0.0.0 netmask:0.0.0.0 gateway:0.0.0.0
    HWaddr 0a:11:31:aa:7e:1a MTU:1500 Stop Link UP
lo ip:127.0.0.1 netmask:255.0.0.0 gateway:127.0.0.1
    ip6: ::1/64 
    HWaddr 00 MTU:16436 Running Link UP