Merge branch 'air720dev' into master

README.md

@@ -2,6 +2,7 @@
 
 ## 1. 简介 ##
 
+
 AT device 软件包是由 RT-Thread AT 组件针对不同 AT 设备的移植文件和示例代码组成，目前支持的 AT 设备有：ESP8266、ESP32、M26、MC20、RW007、MW31、SIM800C、W60X 、SIM76XX、A9/A9G、BC26 系列设备等，目前上述设备都完成对 `AT socket` 功能的移植，及设备通过 AT 命令实现标准 socket 编程接口，完成 socket 通讯的功能，具体功能介绍可参考 [《RT-Thread 编程指南》](https://www.rt-thread.org/document/site/programming-manual/at/at/)AT 命令章节 。 
 
 ### 1.1. 目录结构 ###

SConscript

@@ -103,6 +103,7 @@ if GetDepend(['AT_DEVICE_USING_BC26']):
     if GetDepend(['AT_DEVICE_BC26_SAMPLE']):
         src += Glob('samples/at_sample_bc26.c')
         
+
 group = DefineGroup('at_device', src, depend = ['PKG_USING_AT_DEVICE'], CPPPATH = path)
 
 Return('group')

class/air720/at_device_air720.h

@@ -0,0 +1,66 @@
+/*
+ * File      : at_device_air720.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-05-16     chenyong     first version
+ */
+
+#ifndef __AT_DEVICE_AIR720_H__
+#define __AT_DEVICE_AIR720_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+
+#include <at_device.h>
+
+/* The maximum number of sockets supported by the air720 device */
+#define AT_DEVICE_AIR720_SOCKETS_NUM      6  
+
+struct at_device_air720
+{     
+    char *device_name;
+    char *client_name;
+
+    int power_pin;
+    int power_status_pin;
+    size_t recv_line_num;
+    struct at_device device;
+
+    void *user_data;
+};
+
+#ifdef AT_USING_SOCKET
+
+/* air720 device socket initialize */
+int air720_socket_init(struct at_device *device);
+
+/* air720 device class socket register */
+int air720_socket_class_register(struct at_device_class *class);
+
+#endif /* AT_USING_SOCKET */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AT_DEVICE_AIR720_H__ */

class/air720/at_socket_air720.c

@@ -0,0 +1,661 @@
+/*
+ * File      : at_socket_air720.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-06-12     malongwei    first version
+ * 2019-05-13     chenyong     multi AT socket client support
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <at_device_air720.h>
+
+
+#if !defined(AT_SW_VERSION_NUM) || AT_SW_VERSION_NUM < 0x10300
+#error "This AT Client version is older, please check and update latest AT Client!"
+#endif
+
+#define LOG_TAG "at.skt"
+#include <at_log.h>
+
+#if defined(AT_DEVICE_USING_AIR720) && defined(AT_USING_SOCKET)
+
+#define AIR720_MODULE_SEND_MAX_SIZE 1000
+
+/* set real event by current socket and current state */
+#define SET_EVENT(socket, event) (((socket + 1) << 16) | (event))
+
+/* AT socket event type */
+#define AIR720_EVENT_CONN_OK (1L << 0)
+#define AIR720_EVENT_SEND_OK (1L << 1)
+#define AIR720_EVENT_RECV_OK (1L << 2)
+#define AIR720_EVNET_CLOSE_OK (1L << 3)
+#define AIR720_EVENT_CONN_FAIL (1L << 4)
+#define AIR720_EVENT_SEND_FAIL (1L << 5)
+
+static at_evt_cb_t at_evt_cb_set[] = {
+    [AT_SOCKET_EVT_RECV] = NULL,
+    [AT_SOCKET_EVT_CLOSED] = NULL,
+};
+
+static int air720_socket_event_send(struct at_device *device, uint32_t event)
+{
+    return (int)rt_event_send(device->socket_event, event);
+}
+
+static int air720_socket_event_recv(struct at_device *device, uint32_t event, uint32_t timeout, rt_uint8_t option)
+{
+    int result = RT_EOK;
+    rt_uint32_t recved;
+
+    result = rt_event_recv(device->socket_event, event, option | RT_EVENT_FLAG_CLEAR, timeout, &recved);
+    if (result != RT_EOK)
+    {
+        return -RT_ETIMEOUT;
+    }
+
+    return recved;
+}
+
+/**
+ * close socket by AT commands.
+ *
+ * @param current socket
+ *
+ * @return  0: close socket success
+ *         -1: send AT commands error
+ *         -2: wait socket event timeout
+ *         -5: no memory
+ */
+static int air720_socket_close(struct at_socket *socket)
+{
+    uint32_t event = 0;
+    int result = RT_EOK;
+    at_response_t resp = RT_NULL;
+    int device_socket = (int)socket->user_data;
+    struct at_device *device = (struct at_device *)socket->device;
+
+    resp = at_create_resp(64, 0, rt_tick_from_millisecond(300));
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for air720 device(%s) response structure.", device->name);
+        return -RT_ENOMEM;
+    }
+
+    /* clear socket close event */
+    event = SET_EVENT(device_socket, AIR720_EVNET_CLOSE_OK);
+    air720_socket_event_recv(device, event, 0, RT_EVENT_FLAG_OR);
+
+    if (at_obj_exec_cmd(device->client, resp, "AT+CIPCLOSE=%d", device_socket) < 0)
+    {
+        result = -RT_ERROR;
+        goto __exit;
+    }
+
+    if (air720_socket_event_recv(device, event, rt_tick_from_millisecond(300 * 3), RT_EVENT_FLAG_AND) < 0)
+    {
+        LOG_E("air720 device(%s) socket(%d) close failed, wait close OK timeout.", device->name, device_socket);
+        result = -RT_ETIMEOUT;
+        goto __exit;
+    }
+
+__exit:
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    return result;
+}
+
+/**
+ * create TCP/UDP client or server connect by AT commands.
+ *
+ * @param socket current socket
+ * @param ip server or client IP address
+ * @param port server or client port
+ * @param type connect socket type(tcp, udp)
+ * @param is_client connection is client
+ *
+ * @return   0: connect success
+ *          -1: connect failed, send commands error or type error
+ *          -2: wait socket event timeout
+ *          -5: no memory
+ */
+static int air720_socket_connect(struct at_socket *socket, char *ip, int32_t port, enum at_socket_type type, rt_bool_t is_client)
+{
+    uint32_t event = 0;
+    rt_bool_t retryed = RT_FALSE;
+    at_response_t resp = RT_NULL;
+    int result = RT_EOK, event_result = 0;
+    int device_socket = (int)socket->user_data;
+    struct at_device *device = (struct at_device *)socket->device;
+
+    RT_ASSERT(ip);
+    RT_ASSERT(port >= 0);
+    
+    resp = at_create_resp(128, 0, 5 * RT_TICK_PER_SECOND);
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for air720 device(%s) response structure.", device->name);
+        return -RT_ENOMEM;
+    }
+
+__retry:
+
+    /* clear socket connect event */
+    event = SET_EVENT(device_socket, AIR720_EVENT_CONN_OK | AIR720_EVENT_CONN_FAIL);
+    air720_socket_event_recv(device, event, 0, RT_EVENT_FLAG_OR);
+
+    if (is_client)
+    {
+        switch (type)
+        {
+        case AT_SOCKET_TCP:
+            /* send AT commands(eg: AT+QIOPEN=0,"TCP","x.x.x.x", 1234) to connect TCP server */
+            if (at_obj_exec_cmd(device->client, RT_NULL,
+                                "AT+CIPSTART=%d,\"TCP\",\"%s\",%d", device_socket, ip, port) < 0)
+            {
+                result = -RT_ERROR;
+                goto __exit;
+            }
+            break;
+
+        case AT_SOCKET_UDP:
+            if (at_obj_exec_cmd(device->client, RT_NULL,
+                                "AT+CIPSTART=%d,\"UDP\",\"%s\",%d", device_socket, ip, port) < 0)
+            {
+                result = -RT_ERROR;
+                goto __exit;
+            }
+            break;
+
+        default:
+            LOG_E("air720 device(%s) not supported connect type : %d.", device->name, type);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+    }
+
+    /* waiting result event from AT URC, the device default connection timeout is 75 seconds, but it set to 10 seconds is convenient to use */
+    if (air720_socket_event_recv(device, SET_EVENT(device_socket, 0), 10 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR) < 0)
+    {
+        LOG_E("air720 device(%s) socket(%d) connect failed, wait connect result timeout.", device->name, device_socket);
+        result = -RT_ETIMEOUT;
+        goto __exit;
+    }
+    /* waiting OK or failed result */
+    event_result = air720_socket_event_recv(device,
+                                            AIR720_EVENT_CONN_OK | AIR720_EVENT_CONN_FAIL, 1 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR);
+    if (event_result < 0)
+    {
+        LOG_E("air720 device(%s) socket(%d) connect failed, wait connect OK|FAIL timeout.", device->name, device_socket);
+        result = -RT_ETIMEOUT;
+        goto __exit;
+    }
+    /* check result */
+    if (event_result & AIR720_EVENT_CONN_FAIL)
+    {
+        if (retryed == RT_FALSE)
+        {
+            LOG_D("air720 device(%s) socket(%d) connect failed, maybe the socket was not be closed at the last time and now will retry.",
+                  device->name, device_socket);
+            if (air720_socket_close(socket) < 0)
+            {
+                result = -RT_ERROR;
+                goto __exit;
+            }
+            retryed = RT_TRUE;
+            goto __retry;
+        }
+        LOG_E("air720 device(%s) socket(%d) connect failed.", device->name, device_socket);
+        result = -RT_ERROR;
+        goto __exit;
+    }
+
+__exit:
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    if (result != RT_EOK)
+    {
+        
+    }
+
+    return result;
+}
+
+/**
+ * send data to server or client by AT commands.
+ *
+ * @param socket current socket
+ * @param buff send buffer
+ * @param bfsz send buffer size
+ * @param type connect socket type(tcp, udp)
+ *
+ * @return >=0: the size of send success
+ *          -1: send AT commands error or send data error
+ *          -2: waited socket event timeout
+ *          -5: no memory
+ */
+static int air720_socket_send(struct at_socket *socket, const char *buff, size_t bfsz, enum at_socket_type type)
+{
+    uint32_t event = 0;
+    int result = RT_EOK, event_result = 0;
+    size_t cur_pkt_size = 0, sent_size = 0;
+    at_response_t resp = RT_NULL;
+    int device_socket = (int)socket->user_data;
+    struct at_device *device = (struct at_device *)socket->device;
+    rt_mutex_t lock = device->client->lock;
+
+    RT_ASSERT(buff);
+
+    resp = at_create_resp(128, 2, 5 * RT_TICK_PER_SECOND);
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for air720 device(%s) response structure.", device->name);
+        return -RT_ENOMEM;
+    }
+
+    rt_mutex_take(lock, RT_WAITING_FOREVER);
+
+    /* clear socket connect event */
+    event = SET_EVENT(device_socket, AIR720_EVENT_SEND_OK | AIR720_EVENT_SEND_FAIL);
+    air720_socket_event_recv(device, event, 0, RT_EVENT_FLAG_OR);
+
+    /* set AT client end sign to deal with '>' sign.*/
+    at_obj_set_end_sign(device->client, '>');
+
+    while (sent_size < bfsz)
+    {
+        if (bfsz - sent_size < AIR720_MODULE_SEND_MAX_SIZE)
+        {
+            cur_pkt_size = bfsz - sent_size;
+        }
+        else
+        {
+            cur_pkt_size = AIR720_MODULE_SEND_MAX_SIZE;
+        }
+
+        /* send the "AT+QISEND" commands to AT server than receive the '>' response on the first line. */
+        if (at_obj_exec_cmd(device->client, resp, "AT+CIPSEND=%d,%d", device_socket, cur_pkt_size) < 0)
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* send the real data to server or client */
+        result = (int)at_client_obj_send(device->client, buff + sent_size, cur_pkt_size);
+        if (result == 0)
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* waiting result event from AT URC */
+        if (air720_socket_event_recv(device, SET_EVENT(device_socket, 0), 15 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR) < 0)
+        {
+            LOG_E("air720 device(%s) socket(%d) send failed, wait connect result timeout.", device->name, device_socket);
+            result = -RT_ETIMEOUT;
+            goto __exit;
+        }
+        /* waiting OK or failed result */
+        event_result = air720_socket_event_recv(device,
+                                                AIR720_EVENT_SEND_OK | AIR720_EVENT_SEND_FAIL, 5 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR);
+        if (event_result < 0)
+        {
+            LOG_E("air720 device(%s) socket(%d) send failed, wait connect OK|FAIL timeout.", device->name, device_socket);
+            result = -RT_ETIMEOUT;
+            goto __exit;
+        }
+        /* check result */
+        if (event_result & AIR720_EVENT_SEND_FAIL)
+        {
+            LOG_E("air720 device(%s) socket(%d) send failed.", device->name, device_socket);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        sent_size += cur_pkt_size;
+    }
+
+__exit:
+    /* reset the end sign for data conflict */
+    at_obj_set_end_sign(device->client, 0);
+
+    rt_mutex_release(lock);
+
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    return result;
+}
+
+/**
+ * domain resolve by AT commands.
+ *
+ * @param name domain name
+ * @param ip parsed IP address, it's length must be 16
+ *
+ * @return  0: domain resolve success
+ *         -1: send AT commands error or response error
+ *         -2: wait socket event timeout
+ *         -5: no memory
+ */
+static int air720_domain_resolve(const char *name, char ip[16])
+{
+#define RESOLVE_RETRY 5
+
+    int i, result = RT_EOK;
+    char recv_ip[16] = {0};
+    at_response_t resp = RT_NULL;
+    struct at_device *device = RT_NULL;
+
+    RT_ASSERT(name);
+    RT_ASSERT(ip);
+
+    device = at_device_get_first_initialized();
+    if (device == RT_NULL)
+    {
+        LOG_E("get first initialization air720 device failed.");
+        return -RT_ERROR;
+    }
+
+    /* The maximum response time is 14 seconds, affected by network status */
+    resp = at_create_resp(128, 4, 14 * RT_TICK_PER_SECOND);
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for air720 device(%s) response structure.", device->name);
+        return -RT_ENOMEM;
+    }
+
+    for (i = 0; i < RESOLVE_RETRY; i++)
+    {
+        int err_code = 0;
+
+        if (at_obj_exec_cmd(device->client, resp, "AT+CDNSGIP=\"%s\"", name) < 0)
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* domain name prase error options */
+        if (at_resp_parse_line_args_by_kw(resp, "+CDNSGIP: 0", "+CDNSGIP: 0,%d", &err_code) > 0)
+        {
+            /* 3 - network error, 8 - dns common error */
+            if (err_code == 3 || err_code == 8)
+            {
+                result = -RT_ERROR;
+                goto __exit;
+            }
+        }
+
+        /* parse the third line of response data, get the IP address */
+        if (at_resp_parse_line_args_by_kw(resp, "+CDNSGIP:", "%*[^,],%*[^,],\"%[^\"]", recv_ip) < 0)
+        {
+            rt_thread_mdelay(100);
+            /* resolve failed, maybe receive an URC CRLF */
+            continue;
+        }
+
+        if (rt_strlen(recv_ip) < 8)
+        {
+            rt_thread_mdelay(100);
+            /* resolve failed, maybe receive an URC CRLF */
+            continue;
+        }
+        else
+        {
+            rt_thread_mdelay(10);
+            rt_strncpy(ip, recv_ip, 15);
+            ip[15] = '\0';
+            break;
+        }
+    }
+
+__exit:
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    return result;
+}
+
+/**
+ * set AT socket event notice callback
+ *
+ * @param event notice event
+ * @param cb notice callback
+ */
+static void air720_socket_set_event_cb(at_socket_evt_t event, at_evt_cb_t cb)
+{
+    if (event < sizeof(at_evt_cb_set) / sizeof(at_evt_cb_set[1]))
+    {
+        at_evt_cb_set[event] = cb;
+    }
+}
+
+static void urc_connect_func(struct at_client *client, const char *data, rt_size_t size)
+{
+    int device_socket = 0;
+    struct at_device *device = RT_NULL;
+    char *client_name = client->device->parent.name;
+
+    RT_ASSERT(data && size);
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_CLIENT, client_name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get air720 device by client name(%s) failed.", client_name);
+        return;
+    }
+
+    /* get the current socket by receive data */
+    sscanf(data, "%d,%*s", &device_socket);
+
+    if (strstr(data, "CONNECT OK"))
+    {
+        air720_socket_event_send(device, SET_EVENT(device_socket, AIR720_EVENT_CONN_OK));
+    }
+    else if (strstr(data, "CONNECT FAIL"))
+    {
+        air720_socket_event_send(device, SET_EVENT(device_socket, AIR720_EVENT_CONN_FAIL));
+    }
+}
+
+static void urc_send_func(struct at_client *client, const char *data, rt_size_t size)
+{
+    int device_socket = 0;
+    struct at_device *device = RT_NULL;
+    char *client_name = client->device->parent.name;
+
+    RT_ASSERT(data && size);
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_CLIENT, client_name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get air720 device by client name(%s) failed.", client_name);
+        return;
+    }
+
+    /* get the current socket by receive data */
+    sscanf(data, "%d,%*s", &device_socket);
+
+    if (rt_strstr(data, "SEND OK"))
+    {
+        air720_socket_event_send(device, SET_EVENT(device_socket, AIR720_EVENT_SEND_OK));
+    }
+    else if (rt_strstr(data, "SEND FAIL"))
+    {
+        air720_socket_event_send(device, SET_EVENT(device_socket, AIR720_EVENT_SEND_FAIL));
+    }
+}
+
+static void urc_close_func(struct at_client *client, const char *data, rt_size_t size)
+{
+    int device_socket = 0;
+    struct at_device *device = RT_NULL;
+    char *client_name = client->device->parent.name;
+
+    RT_ASSERT(data && size);
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_CLIENT, client_name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get air720 device by client name(%s) failed.", client_name);
+        return;
+    }
+
+    /* get the current socket by receive data */
+    sscanf(data, "%d,%*s", &device_socket);
+
+    if (rt_strstr(data, "CLOSE OK"))
+    {
+        air720_socket_event_send(device, SET_EVENT(device_socket, AIR720_EVNET_CLOSE_OK));
+    }
+    else if (rt_strstr(data, "CLOSED"))
+    {
+        struct at_socket *socket = RT_NULL;
+
+        /* get AT socket object by device socket descriptor */
+        socket = &(device->sockets[device_socket]);
+
+        /* notice the socket is disconnect by remote */
+        if (at_evt_cb_set[AT_SOCKET_EVT_CLOSED])
+        {
+            at_evt_cb_set[AT_SOCKET_EVT_CLOSED](socket, AT_SOCKET_EVT_CLOSED, RT_NULL, 0);
+        }
+    }
+}
+
+static void urc_recv_func(struct at_client *client, const char *data, rt_size_t size)
+{
+    int device_socket = 0;
+    rt_int32_t timeout;
+    rt_size_t bfsz = 0, temp_size = 0;
+    char *recv_buf = RT_NULL, temp[8] = {0};
+    struct at_socket *socket = RT_NULL;
+    struct at_device *device = RT_NULL;
+    char *client_name = client->device->parent.name;
+
+    RT_ASSERT(data && size);
+
+    /* get the current socket and receive buffer size by receive data */
+    sscanf(data, "+RECEIVE,%d,%d:", &device_socket, (int *)&bfsz);
+    /* get receive timeout by receive buffer length */
+    timeout = bfsz;
+
+    if (device_socket < 0 || bfsz == 0)
+    {
+        return;
+    }
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_CLIENT, client_name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get air720 device by client name(%s) failed.", client_name);
+        return;
+    }
+
+    recv_buf = (char *)rt_calloc(1, bfsz);
+    if (recv_buf == RT_NULL)
+    {
+        LOG_E("no memory for air720 device(%s) URC receive buffer (%d).", device->name, bfsz);
+        /* read and clean the coming data */
+        while (temp_size < bfsz)
+        {
+            if (bfsz - temp_size > sizeof(temp))
+            {
+                at_client_obj_recv(client, temp, sizeof(temp), timeout);
+            }
+            else
+            {
+                at_client_obj_recv(client, temp, bfsz - temp_size, timeout);
+            }
+            temp_size += sizeof(temp);
+        }
+        return;
+    }
+
+    /* sync receive data */
+    if (at_client_obj_recv(client, recv_buf, bfsz, timeout) != bfsz)
+    {
+        LOG_E("air720 device(%s) receive size(%d) data failed.", device->name, bfsz);
+        rt_free(recv_buf);
+        return;
+    }
+
+    /* get AT socket object by device socket descriptor */
+    socket = &(device->sockets[device_socket]);
+
+    /* notice the receive buffer and buffer size */
+    if (at_evt_cb_set[AT_SOCKET_EVT_RECV])
+    {
+        at_evt_cb_set[AT_SOCKET_EVT_RECV](socket, AT_SOCKET_EVT_RECV, recv_buf, bfsz);
+    }
+}
+
+/* air720 device URC table for the socket data */
+static const struct at_urc urc_table[] =
+    {
+        {"", ", CONNECT OK\r\n", urc_connect_func},
+        {"", ", CONNECT FAIL\r\n", urc_connect_func},
+        {"", ", SEND OK\r\n", urc_send_func},
+        {"", ", SEND FAIL\r\n", urc_send_func},
+        {"", ", CLOSE OK\r\n", urc_close_func},
+        {"", ", CLOSED\r\n", urc_close_func},
+        {"+RECEIVE,", "\r\n", urc_recv_func},
+};
+
+static const struct at_socket_ops air720_socket_ops =
+    {
+        air720_socket_connect,
+        air720_socket_close,
+        air720_socket_send,
+        air720_domain_resolve, 
+        air720_socket_set_event_cb,
+};
+
+int air720_socket_init(struct at_device *device)
+{
+    RT_ASSERT(device);
+
+    /* register URC data execution function  */
+    at_obj_set_urc_table(device->client, urc_table, sizeof(urc_table) / sizeof(urc_table[0]));
+
+    return RT_EOK;
+}
+
+int air720_socket_class_register(struct at_device_class *class)
+{
+    RT_ASSERT(class);
+
+    class->socket_num = AT_DEVICE_AIR720_SOCKETS_NUM;
+    class->socket_ops = &air720_socket_ops;
+
+    return RT_EOK;
+}
+
+#endif /* AT_DEVICE_USING_air720 && AT_USING_SOCKET */

inc/at_device.h

@@ -56,6 +56,7 @@ extern "C" {
 #define AT_DEVICE_CLASS_A9G            0x0AU
 #define AT_DEVICE_CLASS_BC26           0x0BU
 
+
 /* Options and Commands for AT device control opreations */
 #define AT_DEVICE_CTRL_POWER_ON        0x01L
 #define AT_DEVICE_CTRL_POWER_OFF       0x02L

samples/at_sample_air720.c

@@ -0,0 +1,53 @@
+/*
+ * File      : at_sample_air720.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-12-07     liang.shao     first version
+ */
+
+#include <at_device_air720.h>
+
+#define LOG_TAG                        "at.sample"
+#include <at_log.h>
+
+#define AIR720_SAMPLE_DEIVCE_NAME     "air720"
+
+static struct at_device_air720 sim0 =
+{
+    AIR720_SAMPLE_DEIVCE_NAME,
+    AIR720_SAMPLE_CLIENT_NAME,
+
+    AIR720_SAMPLE_POWER_PIN,
+    AIR720_SAMPLE_STATUS_PIN,
+    AIR720_SAMPLE_RECV_BUFF_LEN,
+};
+
+static int air720_device_register(void)
+{
+    struct at_device_air720 *air720 = &sim0;
+    
+    return at_device_register(&(air720->device),
+                              air720->device_name,
+                              air720->client_name,
+                              AT_DEVICE_CLASS_AIR720,
+                              (void *) air720);
+}
+INIT_APP_EXPORT(air720_device_register);
+//MSH_CMD_EXPORT(air720_device_register,air720_device_register);