SmartPDCode/pro/src/Cellular.c

#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>
#include <errno.h>
#include "cJSON.h"
#include "json_handle.h"
#include "websocket_handle.h"
#include "common.h"
#include "sys.h"
#include "Cellular.h"
#include <pthread.h>
#include "thread.h"
#include "paras.h"
#include "lock.h"
#include "elog.h"
#include "cfg.h"


#if 0
    #define LOGE  log_e
    #define LOGW  log_w
    #define LOGD  log_d
#else
    #define LOGD  printf
    #define LOGW  printf
    #define LOGE  printf
#endif


#define USE_CELL
//#define GNSS_ENABLE               //EC200N-CN, 不支持gnss

#define RETRY_TIMES                 3
#define BUF_LEN                     2000
#define AT_PORT                     "/dev/ttyUSB1"
#define BAUD_RATE                   B115200
#define QUERY_INTERVAL              1000        // 查询间隔，毫秒
#define RSSI_DBM_MIN1               -113        // LTE、HSDPA网络最小信号值，对应RSSI值范围0-57
#define RSSI_DBM_MIN2               -116        // TD-SCDMA网络最小信号值，对应RSSI值范围100-199 
    
#define CONTEXT_ID                  "1"         //1~15
#define CONNECT_ID                  "0"         //0~11
#define CONNECT_TIMEOUT             "5"
#define CHUNCK_SIZE                 1460

#define MQTT_VER                    4       //3: v3.1   4: v3.1.1

#define MQTT_WILL                   0
#define MQTT_RETAIN                 0

#define MQTT_MAX                    6
#define MQTT_QOS                    2
#define MQTT_CHUNCK_SIZE            1500



enum {
    AT_OK=0,
    AT_ERR,
    AT_TOUT,
};
enum {
    AT_STAT_UNINIT=0,
    AT_STAT_INITED,
};
enum {
    SOCK_TCP=0,
    SOCK_UDP,
};
enum {
    URC_SOCK=0,
    URC_MQTT,
    URC_GNSS,
    URC_NTP,
    URC_SMS,
    URC_CALL,
    URC_ERR,
};
typedef int (*urc_fn_t)(int urc, void *data, int len);


typedef struct {
    int     cmd;
    char    para[100];
}at_para_t;
typedef struct {
    char    *cmd;
    char    *ok;
    char    *err;
    int     timeout;                //ms
}at_cmd_t;
typedef struct {
    int     cmd;
    char    *buf;
    int     dlen;
    int     blen;
}at_buf_t;
typedef struct {
    at_buf_t  rx;
    at_buf_t  tx;
}at_data_t;
typedef struct {
    void           *h;
    
    int             sock;
    int             cont_id;        //1~15
    int             cont_type;      //1:ipv4 2:ipv6 3:ipv4+ipv6
    int             conn_id;

    char            apn[64];
    char            username[128];
    char            password[128];
    int             authentication; //0:none 1:PAP 2:CHAP 3:PAP OR CHAP
    int             cdma_pwd;       //0:no save  1:save
}sock_conn_t;
typedef struct {
    char            host[100];
    uint16_t        port;
    char            username[64];
    char            password[64];
}mqtt_para_t;
typedef struct {
    int             flag;
    int             qos;
    int             retain;
    char            topic[256];
    char            message[256];
    int             message_len;
}mqtt_will_t;
typedef struct {
    char            product_key[64];    //aliyun used
    char            device_name[64];    //aliyun used
    char            device_secret[64];  //aliyun/ used

    char            product_id[64];     //onenet used
    char            access_key[64];     //onenet used

    int             hw_time_enable;     //huawei used
    char            product_secret[64]; //huawei used
    char            node_id[64];
}mqtt_plat_t;
typedef struct {
    void            *h;
    int             ver;                //3:v3.1  4:v3.1.1
    
    int             pdpId;              //1~15
    int             cliId;
    uint16_t        msgId;
    
    int             qos;
    int             retain;
    mqtt_will_t     will;

    int             timeout;            //1~60, default:5
    int             retry_times;
    int             timeout_notice;
    int             clean_session;
    int             keep_alive_time;    //0~3600 seconds  default:120, 0:do not disconnect

    int             ssl_enable;
    int             ssl_ctx_id;
    int             msg_recv_mode;      //0: urc, 1: not urc
    int             msg_len_enable;
    int             ping_interval;      //5~60, default:5
    int             proto_chk_enable;   //0:no check  1:check

    int             send_mode;          //0:string  1:hex
    int             recv_mode;          //0:string  1:hex
    int             view_mode;          //0:no echo   1:echo
    int             edit_mode;          //0:timeout not quit  1:timeout quit
    int             edit_time;          //1~120 seconds

    mqtt_plat_t     plat;
}mqtt_conn_t;
typedef struct {
    int             fd;
    CellInfo_t      *pcell;
    lock_t          lck;
    int             prod_id;

    int             stat;
    cell_all_t      all;
    int             curcmd;              //current cmd

    mqtt_conn_t     mq_conn[MQTT_MAX];
    at_data_t       data[AT_CMD_MAX];
    GlobalDeviceManager *dm;
}cell_handle_t;
static cell_handle_t ceHandle={0};


static at_cmd_t all_cmd[AT_CMD_MAX]={
    //genernal cmd
    {"AT",              "OK",         "ERROR",       300},      //测试命令
    {"ATI",             "OK",         "ERROR",       300},      //显示MT的ID信息
    {"AT+GMI",          "OK",         "ERROR",       300},      //请求制造商信息
    {"AT+GMM",          "OK",         "ERROR",       300},      //请求TA型号ID
    {"AT+GMR",          "OK",         "ERROR",       300},      //请求TA固件版本ID
    {"AT+CGMI",         "OK",         "ERROR",       300},      //同GMI
    {"AT+CGMM",         "OK",         "ERROR",       300},      //同GMM
    {"AT+CGMR",         "OK",         "ERROR",       300},      //同GMR
    {"AT+GSN",          "OK",         "ERROR",       300},      //请求国际移动设备识别码(IMEI) 
    {"AT+CGSN",         "OK",         "ERROR",       300},      //同GSN
    {"AT&F",            "OK",         "ERROR",       300},      //重置AT命令设置为出厂设置
    {"AT&V",            "OK",         "ERROR",       300},      //显示当前配置
    {"AT&W",            "OK",         "ERROR",       300},      //存储当前设置到用户自定义配置文件
    {"ATZ",             "OK",         "ERROR",       300},      //从用户定义配置文件还原所有AT命令设置
    {"ATQ",             "OK",         "ERROR",       300},      //设置结果码回显模式
    {"ATV",             "OK",         "ERROR",       300},      //TA响应格式
    {"ATE0",            "OK",         "ERROR",       300},      //设置命令回显模式
    {"ATS3",            "OK",         "ERROR",       300},      //设置命令行终止符
    {"ATS4",            "OK",         "ERROR",       300},      //设置响应格式字符
    {"ATS5",            "OK",         "ERROR",       300},      //设置命令行编辑字符
    {"ATX",             "OK",         "ERROR",       300},      //设置CONNECT结果码格式和检测呼叫进程
    {"AT+CFUN",         "OK",         "ERROR",       15000},    //设置功能模式
    {"AT+CMEE",         "OK",         "ERROR",       300},      //设置错误讯息格式
    {"AT+CSCS",         "OK",         "ERROR",       300},      //选择TE字符集
    {"AT+QURCCFG",      "OK",         "ERROR",       300},      //配置URC指示选项
    {"AT+QPPPDROP",     "OK",         "ERROR",       300},      //终止PPP连接
                                                     
    //serial cmd                                     
    {"AT&C",            "OK",         "ERROR",       300},      //设置DCD信号模式
    {"AT&D",            "OK",         "ERROR",       300},      //设置DTR信号模式
    {"AT+IFC",          "OK",         "ERROR",       300},      //设置串口的流控方式
    {"AT+IPR",          "OK",         "ERROR",       300},      //设置固定的串口通信波特率
                                                     
    //status cmd                                     
    {"AT+CPAS",         "OK",         "ERROR",       300},      //查询ME活动状态
    {"AT+CEER",         "OK",         "ERROR",       300},      //上报扩展错误
    {"AT+QCFG",         "OK",         "ERROR",       300},      //扩展命令, 较多子命令
    {"AT+QINDCFG",      "OK",         "ERROR",       300},      //控制URC上报
                                                     
    //sim cmd                                        
    {"AT+CIMI",         "OK",         "ERROR",       300},      //查询IMSI
    {"AT+CLCK",         "OK",         "ERROR",       5000},     //功能锁定
    {"AT+CPIN",         "OK",         "ERROR",       5000},     //PIN管理
    {"AT+CPWD",         "OK",         "ERROR",       5000},     //修改密码
    {"AT+CSIM",         "OK",         "ERROR",       300},      //通用(U)SIM卡访问
    {"AT+CRSM",         "OK",         "ERROR",       300},      //(U)SIM卡受限访问
    {"AT+QCCID",        "OK",         "ERROR",       300},      //查询ICCID
    {"AT+QPINC",        "OK",         "ERROR",       300},      //获取PIN剩余重试次数
    {"AT+QINISTAT",     "OK",         "ERROR",       300},      //查询(U)SIM卡初始化状态
    {"AT+QSIMDET",      "OK",         "ERROR",       300},      //(U)SIM卡检测
    {"AT+QSIMSTAT",     "OK",         "ERROR",       300},      //(U)SIM卡插拔状态上报
    {"AT+QDSIM",        "OK",         "ERROR",       50000},    //选择(U)SIM卡
                                                     
    //network service cmd                            
    {"AT+COPS",         "OK",         "ERROR",       300000},   //选择运营商
    {"AT+CREG",         "OK",         "ERROR",       300},      //CS域网络注册状态
    {"AT+CSQ",          "OK",         "ERROR",       300},      //查询信号强度
    {"AT+CPOL",         "OK",         "ERROR",       300},      //配置首选运营商列表
    {"AT+COPN",         "OK",         "ERROR",       300},      //查询运营商名称列表
    {"AT+CTZU",         "OK",         "ERROR",       300},      //自动更新时区
    {"AT+CTZR",         "OK",         "ERROR",       300},      //上报时区变化
    {"AT+QLTS",         "OK",         "ERROR",       500},      //获取通过网络同步的最新时间
    {"AT+QNWINFO",      "OK",         "ERROR",       300},      //查询网络信息
                                                     
    //call cmd                                       
    {"ATA",             "OK",         "ERROR",       90000},    //呼叫应答
    {"ATD",             "OK",         "ERROR",       5000},     //发起呼叫
    {"AT+COLP",         "OK",         "ERROR",       15000},    //被叫线路识别显示
    {"AT+ATH",          "OK",         "ERROR",       90000},    //挂断现有连接
    {"AT+CHUP",         "OK",         "ERROR",       90000},    //挂断语音通话
    {"+++",             "OK",         "ERROR",       300},      //从数据模式切换至命令模式
    {"AT+ATO",          "OK",         "ERROR",       300},      //从命令模式切换至数据模式
    {"AT+ATSO",         "OK",         "ERROR",       300},      //设置自动应答前振铃次数
    {"AT+CLCC",         "OK",         "ERROR",       300},      //查询当前 ME 呼叫
    {"AT^DSCI",         "OK",         "ERROR",       300},      //指示呼叫状态
                                                     
    //phonebook cmd                                  
    {"AT+CNUM",         "OK",         "ERROR",       300},      //查询本机号码
    {"AT+CPBF",         "OK",         "ERROR",       300},      //搜索电话本
    {"AT+CPBR",         "OK",         "ERROR",       300},      //读取电话本条目
    {"AT+CPBS",         "OK",         "ERROR",       300},      //设置电话本存储器
    {"AT+CPBW",         "OK",         "ERROR",       300},      //写入电话本
                                                     
    //sms cmd                                        
    {"AT+CSMS",         "OK",         "ERROR",       300},      //选择短消息服务类型
    {"AT+CMGF",         "OK",         "ERROR",       300},      //配置短消息模式
    {"AT+CSCA",         "OK",         "ERROR",       300},      //设置短消息服务中心地址
    {"AT+CPMS",         "OK",         "ERROR",       300},      //配置短消息首选存储位置
    {"AT+CMGD",         "OK",         "ERROR",       300},      //删除短消息
    {"AT+CMGL",         "OK",         "ERROR",       300},      //按状态读取短消息
    {"AT+CMGR",         "OK",         "ERROR",       300},      //按照索引读取短消息
    {"AT+CMGS",         ">",          "ERROR",       120000},   //发送短消息
    {"AT+CMMS",         "OK",         "ERROR",       300},      //发送多条短消息
    {"AT+CMGW",         "OK",         "ERROR",       300},      //存储短消息
    {"AT+CMSS",         "OK",         "ERROR",       300},      //从存储器发送短消息
    {"AT+CNMA",         "OK",         "ERROR",       300},      //新短消息确认
    {"AT+CNMI",         "OK",         "ERROR",       300},      //设置短消息上报方式
    {"AT+CSCB",         "OK",         "ERROR",       300},      //选择小区广播消息类型
    {"AT+CSDH",         "OK",         "ERROR",       300},      //设置文本模式下参数显示
    {"AT+CSMP",         "OK",         "ERROR",       300},      //设置短消息文本模式参数
    {"AT+QCMGS",        "OK",         "ERROR",       120000},   //发送级联短消息
    {"AT+QCMGR",        "OK",         "ERROR",       300},      //读取级联短消息
                                                     
    //gps cmd                                        
    {"AT+QGPSCFG",      "OK",         "ERROR",       300},      //配置GNSS
    {"AT+QGPSDEL",      "OK",         "ERROR",       300},      //删除辅助数据
    {"AT+QGPS",         "OK",         "ERROR",       300},      //打开GNSS
    {"AT+QGPSEND",      "OK",         "ERROR",       300},      //关闭GNSS
    {"AT+QGPSLOC",      "OK",         "ERROR",       300},      //获取定位信息
    {"AT+QGPSNMEA",     "OK",         "ERROR",       300},      //获取指定的NMEA语句
    {"AT+QAGPS",        "OK",         "ERROR",       300},      //启用/禁用AGPS

    //tcp/udp cmd
    {"AT+QICFG",        "OK",         "ERROR",       300},      //配置可选参数
    {"AT+QICSGP",       "OK",         "ERROR",       300},      //配置TCP/IP场景参数
    {"AT+QIACT",        "OK",         "ERROR",       10000},    //激活PDP场景
    {"AT+QIDEACT",      "OK",         "ERROR",       10000},    //去激活PDP场景
    {"AT+QIOPEN",       "OK",         "ERROR",       300},      //打开Socket服务
    {"AT+QICLOSE",      "OK",         "ERROR",       300},      //关闭Socket服务
    {"AT+QISTATE",      "OK",         "ERROR",       300},      //查询Socket服务状态
    {"AT+QISEND",       ">",          "ERROR",       300},      //发送数据
    {"AT+QIRD",         "OK",         "ERROR",       300},      //读取收到的TCP/IP数据
    {"AT+QISENDEX",     "OK",         "ERROR",       300},      //发送16进制字符串数据
    {"AT+QISWTMD",      "OK",         "ERROR",       300},      //切换数据访问模式
    {"AT+QNTP",         "OK",         "ERROR",       300},      //进行远程服务器Ping操作
    {"AT+QPING",        "+QPING",     "ERROR",       3000},     //使用NTP服务器同步本地时间
    {"AT+QIDNSCFG",     "OK",         "ERROR",       300},      //配置DNS服务器地址
    {"AT+QIDNSGIP",     "OK",         "ERROR",       300},      //用域名获取IP地址
    {"AT+QISDE",        "OK",         "ERROR",       300},      //控制是否回显AT+QISEND要发送的
    {"AT+QIGETERROR",   "OK",         "ERROR",       300},      //查询上一个AT命令错误代码

    //mqtt cmd
    {"AT+QMTCFG",       "OK",         "ERROR",       300},      //配置MQTT可选参数
    {"AT+QMTOPEN",      "OK",         "ERROR",       300},      //打开MQTT客户端网络
    {"AT+QMTCLOSE",     "OK",         "ERROR",       300},      //关闭MQTT客户端网络
    {"AT+QMTCONN",      "OK",         "ERROR",       300},      //连接客户端到MQTT服务器
    {"AT+QMTDISC",      "OK",         "ERROR",       300},      //客户端断开与MQTT服务器的连接
    {"AT+QMTSUB",       "OK",         "ERROR",       300},      //订阅主题
    {"AT+QMTUNS",       "OK",         "ERROR",       300},      //退订主题
    {"AT+QMTPUBEX",     ">",          "ERROR",       300},      //发布消息
    {"AT+QMTRECV",      "OK",         "ERROR",       300},      //从缓存中读取消息

    //domain cmd                                     
    {"AT+CGATT",        "OK",         "ERROR",       140000},   //PS域附着或去附着
    {"AT+CGDCONT",      "OK",         "ERROR",       3000},     //定义PDP上下文
    {"AT+CGQREQ",       "OK",         "ERROR",       300},      //服务质量参数请求
    {"AT+CGQMIN",       "OK",         "ERROR",       300},      //服务质量参数(最低可接受的)
    {"AT+CGEQREQ",      "OK",         "ERROR",       300},      //3G服务质量参数(请求的)
    {"AT+CGEQMIN",      "OK",         "ERROR",       300},      //3G 服务质量参数(最低可接受的)
    {"AT+CGACT",        "OK",         "ERROR",       150000},   //PDP上下文激活/去激活
    {"AT+CGDATA",       "OK",         "ERROR",       300},      //进入数据传输状态
    {"AT+CGPADDR",      "OK",         "ERROR",       300},      //显示PDP地址
    {"AT+CGCLASS",      "OK",         "ERROR",       300},      //GPRS移动站点等级
    {"AT+CGEREG",       "OK",         "ERROR",       300},      //PS域网络注册状态
    {"AT+CGEREP",       "OK",         "ERROR",       300},      //分组域事件上报
    {"AT+CGSMS",        "OK",         "ERROR",       300},      //选择MO短消息服务
    {"AT+CEREG",        "OK",         "ERROR",       300},      //EPS网络注册状态
    {"AT+QGDCNT",       "OK",         "ERROR",       300},      //流量统计
    {"AT+QAUGDCNT",     "OK",         "ERROR",       300},      //自动保存流量统计
    {"AT+QNETDEVCTL",   "OK",         "ERROR",       2000},     //连接USB网卡
    {"AT+QCEERCATCFG",  "OK",         "ERROR",       300},      //配置2G/4G下AT+CEER返回格式
                                                     
    //hardware cmd                                   
    {"AT+QPOWD",        "OK",         "ERROR",       300},      //关闭模块
    {"AT+CCLK",         "OK",         "ERROR",       300},      //实时时钟
    {"AT+QSCLK",        "OK",         "ERROR",       300},      //禁用/启用睡眠模式  
};
at_para_t init_para[]={
        {AT_CMD_AT,         ""},
        {AT_CMD_ATE,        "0"},
        {AT_CMD_CPIN,       "?"},
        {AT_CMD_CREG,       "?"},
        //{AT_CMD_CGDCONT,    ""},
        {AT_CMD_QICSGP,     ""},
        {AT_CMD_QIDEACT,    "="CONTEXT_ID},
        {AT_CMD_QIACT,      "="CONTEXT_ID},
        {AT_CMD_QCFG,       "=\"usbnet\",1"},   //set module to ecm mode
        {AT_CMD_QNETDEVCTL, "=3,"CONTEXT_ID",0"},
        {AT_CMD_CMGF,       "=1"},
        {AT_CMD_CSCS,       "=GSM"},
        
#ifdef GNSS_ENABLE
        {AT_CMD_QGPS,       "=1"},
        {AT_CMD_QGPSCFG,    "=\"gnssconfig\",5"},
        {AT_CMD_QGPSCFG,    "=\"gpsnmeatype\",1"},
#endif
        {-1,                ""},
    };

///////////////////////////////////////////////////////////////////////////////////////////////////////
static at_cmd_t* data_of(int cmd)
{
    return &all_cmd[cmd];
}
static int rssi_to_dbm(int rssi)
{
    int dbm=0;

    if(rssi>=0 && rssi<=31) {
        dbm = RSSI_DBM_MIN1+rssi*2;
    }
    else if(rssi>=100 && rssi<=191) {
        dbm = RSSI_DBM_MIN2+rssi;
    }
    return dbm;
}
static char* str_get(char *buf, char c)
{
    int i,len=strlen(buf);
    for(i=0; i<len; i++) {
        if(buf[i]==c) return buf+i;
    }
    return buf;
}
static int mem_find(char *buf, int len, char *str)
{
    int i,slen=strlen(str);
    for(i=0; i<=len-slen; i++) {
        if(memcmp(buf+i, str, slen)==0) {
            return 0;
        }
    }
    return -1;
}
static void mem_print(char *buf, int len)
{
    int i;
    for(i=0; i<len; i++) {
        LOGD("%d, ", buf[i]);
        if((i+1)%16==0) LOGD("\n");
    }
    LOGD("\n");
}
static int nic_set(int nic, int on)
{
    char tmp[200],path[100];
    const char *ifname=sys_get_ifname(nic);

    sprintf(path, "/var/run/udhcpc_%s.pid", ifname);

    sprintf(tmp, "kill $(cat %s)", path);
    system(tmp);

    sprintf(tmp, "ip link set dev %s %s", ifname, on?"up":"down");
    system(tmp);

    if(on) {
        sprintf(tmp, "udhcpc -R -b -i %s -p %s ", ifname, path);
        system(tmp);
    }
    return 0;
}
static int cell_reset(cell_handle_t *h);
static int cell_sock_init(cell_handle_t *h);
static int cell_get_info(cell_handle_t *h, cell_info_t *info);
static int cell_get_stat(cell_handle_t *h, cell_stat_t *stat);
static void conn_init(cell_handle_t *h, mqtt_conn_t *conn);
//////////////////////////////////////////////////////////////////////////////////





#ifdef USE_CELL
static int port_setup(cell_handle_t *h, int speed);

static void msleep(int ms)
{
    usleep(ms*1000);
}
static void reset_var(CellularManager *pcell)
{
    //pcell->mode = 0;
    pcell->Link_status = false; // 4G网络连接状态
    pcell->Signal_strength = 0; // 4G信号强度
    sprintf(pcell->Cellular_name, "-");
    sprintf(pcell->Cellular_Num, "-");
    //pcell->Cellular_IMEI[64]="-"; // IMEI号

   // pcell->GPS_status = false;  // GPS功能启用
    pcell->GPS_latitude = 0.0;  // GPS��度
    pcell->GPS_longitude = 0.0; // GPS经度
    pcell->GPS_altitude = 0.0;  // GPS海��高度
    pcell->GPS_speed = 0.0;     // GPS速度，单位km/h
    pcell->GPS_nsat = 0;        // GPS��星数量
    sprintf(pcell->GPS_utc, "-");

    //pcell->SMS_status = false; // 短信功能启用
}
static int port_init(cell_handle_t *h)
{
    h->fd = open(AT_PORT, O_RDWR | O_NOCTTY | O_NONBLOCK);
    if(h->fd<0) {
        return -1;
    }
    port_setup(h, BAUD_RATE);
    //reset_var(h->pcell);

    return 0;
}
static int port_deinit(cell_handle_t *h)
{
    if(h->fd<0) {
        return -1;
    }
    return close(h->fd);
}
static int port_read(cell_handle_t *h, void *data, int len)
{
    return read(h->fd, data, len);
}
static int port_write(cell_handle_t *h, void *data, int len)
{
    return write(h->fd, data, len);
}
static int port_setup(cell_handle_t *h, int speed)
{
    struct termios tty;

    if (tcgetattr(h->fd, &tty) != 0) {
        LOGE("Read 4G Module tcgetattr!!!\n");
        return -1;
    }

    cfsetospeed(&tty, speed);
    cfsetispeed(&tty, speed);

    tty.c_cflag = (tty.c_cflag & ~CSIZE) | CS8; // 8-bit chars
    tty.c_iflag &= ~IGNBRK;                     // disable break processing
    tty.c_lflag = 0;                            // no signaling chars, no echo,
                                                // no canonical processing
    tty.c_oflag = 0;                            // no remapping, no delays
    tty.c_cc[VMIN] = 0;                         // read doesn't block
    tty.c_cc[VTIME] = 5;                        // 0.5 seconds read timeout

    tty.c_iflag &= ~(IXON | IXOFF | IXANY); // shut off xon/xoff ctrl
    tty.c_cflag |= (CLOCAL | CREAD);   // ignore modem controls,
                                       // enable reading
    tty.c_cflag &= ~(PARENB | PARODD); // shut off parity
    tty.c_cflag |= 0;
    tty.c_cflag &= ~CSTOPB;
    tty.c_cflag &= ~CRTSCTS;

    if (tcsetattr(h->fd, TCSANOW, &tty) != 0) {
        LOGE("Read 4G Module tcsetattr!!!\n");
        return -1;
    }
    return 0;
}
static int port_wait(cell_handle_t *h, int timeout)
{
    int r;
    char buf[100];
    fd_set	fset;
    struct timeval tv;

    tv.tv_sec = timeout/1000;
	tv.tv_usec = (timeout%1000)*1000;

    FD_ZERO(&fset); FD_SET(h->fd, &fset);
    r = select(h->fd + 1, &fset, NULL, NULL, &tv);
    if (r<=0) {
        if(r<0) {
            //LOGE("port_wait error %s\n", strerror(errno));
        }
        else {
            //LOGE("port_wait timeout\n");
        }
    }
    return r;
}
static int port_recv(cell_handle_t *h, char *buf, int buflen, int timeout)
{
    int r;

    r = port_wait(h, timeout);
    if(r<0) {
        return -1;
    }

    r = port_read(h, buf, buflen);
    if(r<=0) {
        return -1;
    }
    return r;
}
static int send_cmd(cell_handle_t *h, int cmd, char *para, char *rcv, int rcvlen)
{
    int i,r,l,tout,finish=0;
    int tlen=0,buflen,wait_step=10;
    char buf[BUF_LEN],*pbuf;
    at_cmd_t *pcmd=data_of(cmd);

    sprintf(buf, "%s%s\r", pcmd->cmd, para?para:"");

    LOGD("[tx]: %s\n", buf);
    for(i=0; i<RETRY_TIMES; i++) {
        tout = 0;
        port_write(h, buf, strlen(buf));
        while(tout<pcmd->timeout) {
            l = port_wait(h, wait_step);
            if(l>0) {
                if(rcv && rcvlen>0) {
                    pbuf = rcv;
                    buflen = rcvlen;
                }
                else {
                    pbuf = buf;
                    buflen = sizeof(buf);
                }

                l = port_read(h, pbuf+tlen, buflen);
                if(l>0) {
                    tlen += l; pbuf[tlen] = 0;

                    LOGD("[rx]: %s\n", pbuf);
                    if(pcmd->ok && strlen(pcmd->ok) && strstr(pbuf, pcmd->ok)) {
                        return AT_OK;
                    }
                    
                    if(pcmd->err && strlen(pcmd->err) && strstr(pbuf, pcmd->err)) {
                        return AT_ERR;
                    }
                }
            }
            tout += wait_step;
        }
    }
    cell_reset(h);

    return AT_TOUT;
}
static int send_data(cell_handle_t *h, void *data, int len, int timeout)
{
    char buf[100];
    int l,tlen=0,tout=0,wait_step=10;

    l = port_write(h, data, len);
    if(l==len) {
        while(tout<timeout) {
            l = port_wait(h, wait_step);
            if(l>0) {
                l = port_read(h, buf, sizeof(buf));
                if(l>0) {
                    tlen += l; buf[tlen] = 0;
                    if(strstr(buf, "OK")) {
                        return AT_OK;
                    }
                    else if(strstr(buf, "ERROR")) {
                        return AT_ERR;
                    }
                }
            }
            tout += wait_step;
        }
    }
    return AT_TOUT;
}
////////////////////////////////////////////////////////////////////////////
static int cell_reset(cell_handle_t *h)
{
    int r;

    r = send_cmd(h, AT_CMD_CFUN, "=1,1", NULL, 0);
    if(r==AT_OK) {
        h->stat = AT_STAT_UNINIT;
    }
    return (r==AT_OK)?0:-1;
}
static int cell_init(cell_handle_t *h)
{
    int i,r;
    at_para_t *p=init_para;

    if(h->stat==AT_STAT_INITED) {
        return 0;
    }

    for(i=0;; i++) {
        if(p[i].cmd==-1) {
            break;
        }

        if(p[i].cmd==AT_CMD_CGDCONT) {
            sprintf(p[i].para, "=%s,\"IPV4V6\",\"%s\"", CONTEXT_ID, h->pcell->apn);
        }
        else if(p[i].cmd==AT_CMD_QICSGP) {
            sprintf(p[i].para, "=%s,3,\"%s\",\"%s\",\"%s\"", CONTEXT_ID, h->pcell->apn,h->pcell->username,h->pcell->password);
        }

        r = send_cmd(h, p[i].cmd, p[i].para, NULL, 0);
        if(r!=AT_OK) {
            break;
        }
    }

    if(r==0) {
        h->stat = AT_STAT_INITED;
        cell_get_info(h, &h->all.info);
    }

    return r?-1:0;
}
static int cell_deinit(cell_handle_t *h)
{
    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    return 0;
}
static int cell_get_info(cell_handle_t *h, cell_info_t *info)
{
    int r;
    char buf[400];
    
    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    memset(info, 0, sizeof(cell_info_t));
    r = send_cmd(h, AT_CMD_CNUM, NULL, buf, sizeof(buf));
    if(r==AT_OK) {
        r = sscanf(str_get(buf,'+'), "+CNUM: %*s,%s,%*d", info->cnum);
    }

    r = send_cmd(h, AT_CMD_GSN, NULL, buf, sizeof(buf));
    if(r==AT_OK) {
        r = sscanf(str_get(buf,'+'), "%s", info->imei);
    }

    r = send_cmd(h, AT_CMD_CIMI, NULL, buf, sizeof(buf));
    if(r==AT_OK) {
        r = sscanf(str_get(buf,'+'), "%s", info->imsi);
    }

    r = send_cmd(h, AT_CMD_CGDCONT, "?", buf, sizeof(buf));
    if(r==AT_OK) {
        r = sscanf(str_get(buf,'+'), "+CGDCONT: %*d,\"%*[^\"]\",\"%[^\"]", info->apn);
    }

    r = send_cmd(h, AT_CMD_COPS, "?", buf, sizeof(buf));
    if(r==AT_OK) {
        r = sscanf(str_get(buf,'+'), "+COPS: %*d,%*d,\"%[^\"]", info->isp);
    }

    LOGD("___info->apn:  %s\n", info->apn);
    LOGD("___info->isp:  %s\n", info->isp);
    LOGD("___info->imei: %s\n", info->imei);
    LOGD("___info->imsi: %s\n", info->imsi);
    LOGD("___info->cnum: %s\n", info->cnum);
   
    return 0;
}
static int cell_get_sig(cell_handle_t *h, cell_stat_t *stat)
{
    char buf[200];
    int rssi,ber,r=-1;

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    r = send_cmd(h, AT_CMD_CSQ, NULL, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }

    r = sscanf(str_get(buf,'+'), "%*s %d,%d", &rssi, &ber);
    if(r<2) {
        return -1;
    }
    stat->dbm = rssi_to_dbm(rssi);
    stat->ber = ber;

    return 0;
}
static int cell_get_gnss(cell_handle_t *h, cell_stat_t *stat)
{
    int r;
    char buf[200],utc[32],date[32];

#ifdef GNSS_ENABLE
    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    r = send_cmd(h, AT_CMD_QGPSLOC, "=0", buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }

    r = sscanf(str_get(buf,'+'), "+QGPSLOC: %s,%s,%s,%*d,%d,%*d,%*d,%*d,%*d,%s,%d", utc, stat->latitude, stat->longitude, &stat->altitude, date, &stat->nsta);
    if(r<6) {
        return -1;
    }
    //
#endif

    return 0;
}
static int cell_get_ping(cell_handle_t *h, cell_stat_t *stat)
{
    int r,ret;
    char buf[200],utc[32],date[32];

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    r = send_cmd(h, AT_CMD_QPING, "=1,\"163.com\",3,2,", buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }

    r = sscanf(str_get(buf,'+'), "+QPING: %d", &ret);
    if(r<1) {
        return -1;
    }
    if(ret==0) {
        stat->linked = 1;
    }
    else {
        stat->linked = 0;
    }
    return 0;
}
static int cell_get_time(cell_handle_t *h, cell_stat_t *stat)
{
    int r,offset;
    char opr,buf[200],date[24],time[24];
    struct tm utc_tm;

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    r = send_cmd(h, AT_CMD_QLTS, "=1", buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }

    r = sscanf(str_get(buf,'+'), "+QLTS: \"%d/%d/%d,%d:%d:%d",&utc_tm.tm_year,&utc_tm.tm_mon,&utc_tm.tm_mday,&utc_tm.tm_hour,&utc_tm.tm_min,&utc_tm.tm_sec);
    if(r<6) {
        return -1;
    }
    stat->utctime = mktime2(&utc_tm, 0);
    //print_time("999", &utc_tm);

    return 0;
}
static int cell_get_stat(cell_handle_t *h, cell_stat_t *stat)
{
    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    cell_get_sig(h,  stat);
    cell_get_gnss(h, stat);
    cell_get_ping(h, stat);
    cell_get_time(h, stat);

    return 0;
}
static int cell_sock_conn(cell_handle_t *h, int sock, char *host, uint16_t port, sock_conn_t *conn)
{
    int r;
    char buf[200];

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    sprintf(buf, "=%s,%s,%s,“%s”,%d,0,1", CONTEXT_ID, CONNECT_ID, (sock==SOCK_TCP)?"TCP":"UDP", host, port);
    r = send_cmd(h, AT_CMD_QIOPEN, buf, NULL, 0);
    if(r!=AT_OK) {
        return -1;
    }
    conn->h = h;
    conn->sock = sock;
    conn->cont_id = atoi(CONTEXT_ID);
    conn->conn_id = atoi(CONNECT_ID);

    return 0;
}
static int cell_sock_disconn(sock_conn_t *conn)
{
    int r;
    char buf[200];
    cell_handle_t *h=(cell_handle_t*)conn->h;

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    sprintf(buf, "=%s,%s", CONNECT_ID, CONNECT_TIMEOUT);
    r = send_cmd(h, AT_CMD_QICLOSE, buf, NULL, 0);
    if(r!=AT_OK) {
        return -1;
    }
    conn->h = NULL;
    conn->sock = -1;
    conn->cont_id = -1;
    conn->conn_id = -1;

    return 0;
}
static int cell_sock_send(sock_conn_t *conn, void *data, int len)
{
    int r=0,rt,offset=0,remain_len,send_len;
    char buf[100],*pd=(char*)data;
    cell_handle_t *h=(cell_handle_t*)conn->h;

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    sprintf(buf, "=%d,%d", conn->conn_id, len);
    rt = send_cmd(h, AT_CMD_QISEND, buf, NULL, 0);
    if(rt!=AT_OK) {
        return -1;
    }

    while(offset<len) {
        remain_len = len - offset;
        send_len = (remain_len>CHUNCK_SIZE)?CHUNCK_SIZE:remain_len;
        
        rt = send_data(h, data+offset, send_len, 500);
        if(rt!=AT_OK) {
            r = -1; break;
        }
        offset += send_len;
    }

    return r;
}
static int cell_sock_stat(sock_conn_t *conn)
{
    int r;
    char buf[100];
    cell_handle_t *h=(cell_handle_t*)conn->h;

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    r = send_cmd(h, AT_CMD_QISTATE, NULL, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }

    return 0;
}
static int cell_sock_connected(cell_handle_t *h)
{
    return 0;
}
static mqtt_conn_t* get_mqtt_conn_free(cell_handle_t *h)
{
    int i;
    for(i=0; i<MQTT_MAX; i++) {
        if(h->mq_conn[i].h==NULL) {
            return &h->mq_conn[i];
        }
    }
    return NULL;
}
static int cell_mqtt_init(cell_handle_t *h)
{
    int i;
    at_cmd_t *pcmd=NULL;

    for(i=0; i<MQTT_MAX; i++) {
        h->mq_conn[i].cliId = i;
    }

    return 0;
}
static int cell_mqtt_conn(cell_handle_t *h, mqtt_para_t *para)
{
    int r;
    char tmp[200],buf[100];
    mqtt_conn_t *conn=NULL;

    conn = get_mqtt_conn_free(h);
    if(!conn) {
        return -1;
    }
    conn_init(h, conn);

    sprintf(tmp, "=%d,\"%s\",%d", conn->cliId, para->host, para->port);
    r = send_cmd(h, AT_CMD_QMTOPEN, tmp, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }

    sprintf(tmp, "=%d,\"mqtt%d\",\"%s\",\"%s\"", conn->cliId, conn->cliId, para->username, para->password);
    r = send_cmd(h, AT_CMD_QMTCONN, tmp, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }
    conn->h = h;
    conn->qos = 2;
    conn->retain = 0;

    return 0;
}
static int cell_mqtt_disconn(mqtt_conn_t *conn)
{
    int r;
    char tmp[100],buf[100];
    at_cmd_t *pcmd=NULL;

    sprintf(tmp, "=%d", conn->cliId);
    r = send_cmd(conn->h, AT_CMD_QMTDISC, tmp, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }

    r = send_cmd(conn->h, AT_CMD_QMTCLOSE, tmp, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }
    conn->msgId = 0;
    conn->h = NULL;

    return 0;
}
static int cell_mqtt_sub(mqtt_conn_t *conn, char *topic)
{
    int r;
    char buf[500];
    at_cmd_t *pcmd=NULL;

    sprintf(buf, "=%d, %d, \"%s\",%d", conn->cliId, conn->msgId, topic, conn->qos);
    r = send_cmd(conn->h, AT_CMD_QMTSUB, buf, NULL, 0);
    if(r!=AT_OK) {
        return -1;
    }
    return 0;
}
static int cell_mqtt_pub(mqtt_conn_t *conn, char *topic, void *data, int len)
{
    char buf[200],*pd=(char*)data;
    int r=0,rt,offset=0,remain_len,send_len;

    sprintf(buf, "=%d,%d,%d,%d,\"%s\",%d", conn->cliId, conn->msgId, conn->qos, conn->retain, topic, len);
    rt = send_cmd(conn->h, AT_CMD_QMTPUB, NULL, buf, sizeof(buf));
    if(rt!=AT_OK) {
        return -1;
    }

    while(offset<len) {
        remain_len = len - offset;
        send_len = (remain_len>CHUNCK_SIZE)?CHUNCK_SIZE:remain_len;
        rt = send_data(conn->h, data+offset, send_len, 500);
        if(rt!=AT_OK) {
            r = -1; break;
        }
        offset += send_len;
    }

    return 0;
}
static int cell_send_sms(cell_handle_t *h, char *number, char *txt)
{
    int r=-1,rt;
    char tmp[100],buf[200];

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    sprintf(tmp, "=\"%s\"", number);
    r = send_cmd(h, AT_CMD_CMGS, tmp, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }

    snprintf(buf, sizeof(buf), "%s\x1a", txt);
    r = send_data(h, buf, strlen(buf), 5000);

    return r;
}
static int cell_send_call(cell_handle_t *h, char *number, void *data, int len)
{
    int r;
    char buf[100];

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    sprintf(buf, "%s", number);
    r = send_cmd(h, AT_CMD_ATD, NULL, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }
    return 0;
}


/////////////////////////////////////////////////////////////////////////
static int conn_cfg(mqtt_conn_t *conn, char *item, char *value)
{
    int r;
    char tmp[100],buf[200];
    cell_handle_t *h=(cell_handle_t*)conn->h;

    if(h->stat==AT_STAT_UNINIT) {
        return -1;
    }

    sprintf(tmp, "=\"%s\",%s", item, value);
    r = send_cmd(h, AT_CMD_QMTCFG, NULL, buf, sizeof(buf));
    if(r!=AT_OK) {
        return -1;
    }
    return 0;
}
static void conn_init(cell_handle_t *h, mqtt_conn_t *conn)
{
    char buf[100];

    conn->h = h;
    conn->ver = MQTT_VER;
    conn->pdpId = conn->cliId+1;    //1~15
    conn->msgId = 0;
    conn->qos = MQTT_QOS;
    conn->retain = 1;

    conn->will.flag = MQTT_WILL;
    conn->will.qos = MQTT_QOS;
    conn->will.retain = MQTT_RETAIN;
    strcpy(conn->will.topic, "");
    strcpy(conn->will.message, "");
    conn->will.message_len = strlen(conn->will.message);

    conn->timeout = 10;                  //1~60, default:5
    conn->retry_times = 3;
    conn->timeout_notice = 1;
    conn->clean_session = 1;

    conn->ssl_enable = 0;
    conn->ssl_ctx_id = 0;

    conn->msg_recv_mode = 0;      //0: urc, 1: not urc
    conn->msg_len_enable = 1;
    conn->ping_interval = 5;      //5~60, default:5
    conn->proto_chk_enable = 0;   //0:no check  1:check

    conn->send_mode = 0;          //0:string  1:hex
    conn->recv_mode = 0;          //0:string  1:hex
    conn->view_mode = 0;          //0:no echo   1:echo
    conn->edit_mode = 0;          //0:timeout not quit  1:timeout quit
    conn->edit_time = 5;          //1~120 seconds

    //conn->plat.product_key[64];    //aliyun used
    //conn->plat.device_name[64];    //aliyun used
    //conn->plat.device_secret[64];  //aliyun/ used
    
    //conn->plat.hw_time_enable;     //huawei used
    //conn->plat.product_secret[64]; //huawei used
    //conn->plat.node_id[64];

    //conn->plat.product_id[64];     //onenet used
    //conn->plat.access_key[64];     //onenet used

    sprintf(buf, "%d,%d", conn->cliId, conn->ver);
    conn_cfg(conn, "version",   buf);

    sprintf(buf, "%d,%d", conn->cliId, conn->pdpId);
    conn_cfg(conn, "pdpcid",    buf);

    sprintf(buf, "%d,%d", conn->cliId, conn->keep_alive_time);
    conn_cfg(conn, "keepalive", buf);

    sprintf(buf, "%d,%d", conn->cliId, conn->clean_session);
    conn_cfg(conn, "session",   buf);

    sprintf(buf, "%d,%d,%d,%d", conn->cliId, conn->timeout, conn->retry_times, conn->timeout_notice);
    conn_cfg(conn, "timeout",   buf);

    sprintf(buf, "%d,%d,%d", conn->cliId, conn->ssl_enable, conn->ssl_ctx_id);
    conn_cfg(conn, "ssl",       buf);

    sprintf(buf, "%d,%d", conn->cliId, conn->ping_interval);
    conn_cfg(conn, "qmtping",   buf);

    //sprintf(buf, "%d,%d,%d,%d,\"%s\",\"%s\"", conn->cliId, conn->will.flag, conn->will.qos, conn->will.retain, conn->will.topic, conn->will.message);
    //conn_cfg(conn, "will",       buf);

    //sprintf(buf, "%d,%d,%d,%d,\"%s\",%d", conn->cliId, conn->will.flag, conn->will.qos, conn->will.retain, conn->will.topic, conn->will.message_len);
    //conn_cfg(conn, "willex",       buf);

    sprintf(buf, "%d,%d", conn->cliId, conn->send_mode);
    conn_cfg(conn, "send/mode",       buf);

    sprintf(buf, "%d,%d,%d", conn->cliId, conn->msg_recv_mode, conn->msg_len_enable);
    conn_cfg(conn, "recv/mode",       buf);

    sprintf(buf, "%d,%d", conn->cliId, conn->view_mode);
    conn_cfg(conn, "view/mode",       buf);

    sprintf(buf, "%d,%d,%d", conn->cliId, conn->edit_mode, conn->edit_time);
    conn_cfg(conn, "edit/timeout",    buf);

    sprintf(buf, "%d,%d", conn->cliId, conn->proto_chk_enable);
    conn_cfg(conn, "protocol/check",  buf);

    sprintf(buf, "%d,%d,%d", conn->cliId, conn->send_mode, conn->recv_mode);
    conn_cfg(conn, "dataformat",      buf);

#if 0   //aliyun
    sprintf(buf, "%d,\"%s\",\"%s\",\"%s\"", conn->cliId, conn->plat.product_key, conn->plat.device_name, conn->plat.device_secret);
    conn_cfg(conn, "aliauth",      buf);
#endif

#if 0   //huawei
    sprintf(buf, "%d,\"%s\",\"%s\"", conn->cliId, conn->plat.product_id, conn->plat.device_secret);
    conn_cfg(conn, "hwauth",      buf);

    sprintf(buf, "%d,\"%s\",\"%s\",\"%s\"", conn->cliId, conn->plat.product_id, conn->plat.product_secret, conn->plat.node_id);
    conn_cfg(conn, "hwprodid",      buf);
#endif

#if 0   //onenet
    sprintf(buf, "%d,\"%s\",\"%s\"", conn->cliId, conn->plat.product_id, conn->plat.access_key);
    conn_cfg(conn, "onenet",      buf);
#endif
}

static int cell_test(cell_handle_t *h)
{
    int r;
    cell_info_t info;
    cell_stat_t stat;

    cell_get_info(h, &info);
    while(1) {
        r = cell_get_stat(h, &stat);
        if(r==0) {
            LOGD("___dbm: %d ber: %d\n", stat.dbm, stat.ber);
        }
        else {
            LOGE("___ get stat failed\n");
        }
        sleep(3);
    }
    return 0;
}
/////////////////////////////////////////////////////////////////////////
static int urc_handle(char *data, int len)
{
    char *key=NULL;

    key = "+QIURC: ";
    if(strstr(data, key)) {

    }
    
    key = "+QMT";
    if(strstr(data, key)) {

    }


    return 0;
}

static void* cellular_thread(void *arg)
{
    int r;
    uint32_t cnt=0;
    char rxbuf[BUF_LEN];
    thread_handle_t *th=(thread_handle_t*)arg;
    cell_handle_t *h=(cell_handle_t*)th->arg;

    port_init(h);
    while (th->quit==0) {
        cnt++;
        if(h->pcell->mode) {

            if(cnt%5==0) {
                cell_init(h);
            }

            if(cnt%5==0) {
                cell_get_stat(h, &h->all.stat);
            }
        }
        sleep(1);
    }
    cell_deinit(h);
    port_deinit(h);

    pthread_exit(NULL);
}
#endif

int cellular_reset(void)
{
    int r=-1;
    cell_handle_t *h=&ceHandle;

#ifdef USE_CELL
    r = cell_reset(h);
#endif

    return r;
}



int cellular_init(void)
{
    int r;
    cell_handle_t *h=&ceHandle;

#ifdef USE_CELL
    memset(h, 0, sizeof(cell_handle_t));
    
    h->dm = &__globalDeviceManage;
    h->pcell = &h->dm->_globalDevInfo.cell;
    h->prod_id = h->dm->_globalDevInfo.product.id;
    h->lck = lock_d_init();
    nic_set(NIC_USB, 1);

    thread_start(THREAD_ID_CELLULAR, cellular_thread, h);
#endif

    return 0;
}

int cellular_deinit(void)
{
    cell_handle_t *h=&ceHandle;

#ifdef USE_CELL
    lock_d_deinit(h->lck);
    thread_stop(THREAD_ID_CELLULAR);
#endif

    return 0;
}


int cellular_get_all(cell_all_t *all)
{
    int r=-1;
    cell_handle_t *h=&ceHandle;

#ifdef USE_CELL
    if(all) {
        *all = h->all;
        r = 0;
    }
#endif

    return r;
}


int cellular_is_connected(void)
{
    int r=0;
    cell_handle_t *h=&ceHandle;

#ifdef USE_CELL
    r = h->all.stat.linked;
#endif

    return r;
}



int cellular_test(void)
{
    cell_handle_t *h=&ceHandle;

#ifdef USE_CELL
    cell_test(h);
#endif

    return 0;
}