4g gns update

main.c

@@ -109,6 +109,7 @@ int main(int argc, char *argv[]) {
 
     system("pkill firefox");
     Delay_Ms(30,0);
+    reconnect_4g();
     gStart=time(NULL);//开始时间戳
    
     serial_Init();//串口初始化

opensh.c

@@ -49,3 +49,23 @@ void refresh_cam()
     pclose(fp);
     printf("recam\n");
 }
+
+int reconnect_4g()
+{
+     FILE *file = fopen("/etc/resolv.conf", "w");
+    if (file == NULL) {
+        perror("Failed to open /etc/resolv.conf");
+        return 1;
+    }
+
+    // 写入 nameserver 8.8.8.8
+    const char *nameserver = "nameserver 8.8.8.8\n";
+    if (fputs(nameserver, file) == EOF) {
+        perror("Failed to write to /etc/resolv.conf");
+        fclose(file);
+        return 1;
+    }
+
+    // 关闭文件
+    fclose(file);
+}

opensh.h

@@ -10,4 +10,5 @@ extern char gwebcam[100];
 int opencamsh();
 
 void refresh_cam();
+int reconnect_4g();
 #endif
\ No newline at end of file