SIM7600数据回调拨号上网

DataCall用于设置/查询APN，CDMA网络下拨号用户和密码，连接网络，断开网络等功能，最多同时支持8个链接，建议序列号从7号开始使用。

1. API

1）int datacall_init(); 初始化网络

输入：无

输出：无

返回值：无

2）int start_dataCall(app_tech_e tech, int ip_family, int profile); //建立数据链接

输入	tech: 使用制式（枚举） 1.umts 2.cdma 3.1x 。。。 ip_family: ip类型 4：ip4 6：ip6 profile： 序列号
输出	无
返回值	0：成功  -1：失败

3）int stop_dataCall(int profile); //断开链接

输入：profile序列号

4）int get_datacall_info_by_profile(int profile, datacall_info_type *callinfo)

功能	获取数据链接参数
输入	profile 序列号
输出	callinfo 链接参数结构体
返回值	0：成功  -1：失败

5）int datacall_deinit(); //释放网络资源

输入：无

输出：无

返回值：无

2. 数据回调函数

void simcom_datacall_test()
{
    const char *options_list[] = {
        "1. start data call",
        "2. stop data call",
        "3. get call Info",
        "4. back",
    };

    int opt = 0;
    int i,j;
    char scan_string[100] = {0};
    if(datacall_init() != 0)
    {
        return;
    }

    while(1)
    {
        printf("\nPlease select an option to test from the items listed below.\n");
        print_option_menu(options_list, sizeof(options_list)/sizeof(options_list[0]));
        printf("Option > ");

        memset(scan_string, 0, sizeof(scan_string));
        if (fgets(scan_string, sizeof(scan_string), stdin) == NULL)
            continue;

        /* Convert the option to an integer, and switch on the option entered. */
        opt = atoi(scan_string);
        switch(opt)
        {
            case 1: /* start data call*/
                {
                    int profile;
                    printf("\nPlease input profile index:\n");			             
                    memset(scan_string, 0, sizeof(scan_string));
                    if (fgets(scan_string, sizeof(scan_string), stdin) == NULL)
                        break;
                    profile = atoi(scan_string);
                    if(profile > 16 || profile == 6)     //Profile = 1 for system. profile=6 for wifi
                    {
                        printf("please select other profile.\n");
                        break;
                    }
                    start_dataCall(app_tech_auto, DSI_IP_VERSION_4, profile);
                }
                break;
            case 2: /*stop data call*/
                {
                    int profile;
                    printf("\nPlease input profile index:\n");			             
                    memset(scan_string, 0, sizeof(scan_string));
                    if (fgets(scan_string, sizeof(scan_string), stdin) == NULL)
                        break;
                    profile = atoi(scan_string);
                    if(profile <= 1 || profile > 16 || profile == 6)     //Profile = 1 for system. profile=6 for wifi
                    {
                        printf("please select other profile.\n");
                        break;
                    }
                    stop_dataCall(profile);
                }
                break;
            case 3:
                {
                    /* get data call infomation*/
                    int profile;
                    int ret;
                    datacall_info_type callinfo;
                    printf("\nPlease input profile index:\n");			             
                    memset(scan_string, 0, sizeof(scan_string));
                    if (fgets(scan_string, sizeof(scan_string), stdin) == NULL)
                        break;
                    profile = atoi(scan_string);
                    
                    ret = get_datacall_info_by_profile(profile,&callinfo);
                    if(ret == 0)
                    {
                        printf("DC: profile=%d\n", callinfo.profile);					
                        printf("DC: handle=%d\n", callinfo.handle);
                        printf("DC: if_name=%s\n", callinfo.if_name);
                        printf("DC: ip_str=%s\n", callinfo.ip_str);
                        printf("DC: mask=%d\n", callinfo.mask);
                        printf("DC: pri_dns_str=%s\n", callinfo.pri_dns_str);
                        printf("DC: sec_dns_str=%s\n", callinfo.sec_dns_str);
                        printf("DC: handle=%d\n", callinfo.status);
                    }
                }
                break;
            case 4:
                break;
            default:
                break;
        }

        if(opt == 4)
        {
            break;
        }
    }
	datacall_deinit();
}