Add files via upload

class/m6315/at_device_m6315.c

@@ -0,0 +1,969 @@
+/*
+ * File      : at_socket_m6315.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 <ctype.h>
+
+#include <at_device_m6315.h>
+
+#define LOG_TAG                        "at.dev.m6315"
+#include <at_log.h>
+
+#ifdef AT_DEVICE_USING_M6315
+
+#define M6315_WAIT_CONNECT_TIME      5000
+#define M6315_THREAD_STACK_SIZE      2048
+#define M6315_THREAD_PRIORITY        (RT_THREAD_PRIORITY_MAX/2)
+
+
+static void m6315_power_on(struct at_device *device)
+{
+    struct at_device_m6315 *m6315 = RT_NULL;
+
+    m6315 = (struct at_device_m6315 *) device->user_data;
+
+    /* not nead to set pin configuration for m26 device power on */
+    if (m6315->power_pin == -1 || m6315->power_status_pin == -1)
+    {
+        return;
+    }
+
+    if (rt_pin_read(m6315->power_status_pin) == PIN_HIGH)
+    {
+        return;
+    }
+    rt_pin_write(m6315->power_pin, PIN_HIGH);
+
+    while (rt_pin_read(m6315->power_status_pin) == PIN_LOW)
+    {
+        rt_thread_mdelay(10);
+    }
+    rt_pin_write(m6315->power_pin, PIN_LOW);
+}
+
+static void m6315_power_off(struct at_device *device)
+{
+    struct at_device_m6315 *m6315 = RT_NULL;
+
+    m6315 = (struct at_device_m6315 *) device->user_data;
+
+    /* not nead to set pin configuration for m6315 device power on */
+    if (m6315->power_pin == -1 || m6315->power_status_pin == -1)
+    {
+        return;
+    }
+
+    if (rt_pin_read(m6315->power_status_pin) == PIN_LOW)
+    {
+        return;
+    }
+    rt_pin_write(m6315->power_pin, PIN_HIGH);
+
+    while (rt_pin_read(m6315->power_status_pin) == PIN_HIGH)
+    {
+        rt_thread_mdelay(10);
+    }
+    rt_pin_write(m6315->power_pin, PIN_LOW);
+}
+
+/* =============================  m6315 network interface operations ============================= */
+
+/* set m6315 network interface device status and address information */
+static int m6315_netdev_set_info(struct netdev *netdev)
+{
+#define M6315_IMEI_RESP_SIZE      32
+#define M6315_IPADDR_RESP_SIZE    32
+#define M6315_DNS_RESP_SIZE       96
+#define M6315_INFO_RESP_TIMO      rt_tick_from_millisecond(300)
+
+    int result = RT_EOK;
+    ip_addr_t addr;
+    at_response_t resp = RT_NULL;
+    struct at_device *device = RT_NULL;
+
+    RT_ASSERT(netdev);
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_NETDEV, netdev->name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get device(%s) failed.");
+        return -RT_ERROR;
+    }
+
+    /* set network interface device status */
+    netdev_low_level_set_status(netdev, RT_TRUE);
+    netdev_low_level_set_link_status(netdev, RT_TRUE);
+    netdev_low_level_set_dhcp_status(netdev, RT_TRUE);
+
+    resp = at_create_resp(M6315_IMEI_RESP_SIZE, 0, M6315_INFO_RESP_TIMO);
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for resp create.");
+        result = -RT_ENOMEM;
+        goto __exit;
+    }
+
+    /* set network interface device hardware address(IMEI) */
+    {
+        #define M6315_NETDEV_HWADDR_LEN   8
+        #define M6315_IMEI_LEN            15
+
+        char imei[M6315_IMEI_LEN] = {0};
+        int i = 0, j = 0;
+
+        /* send "AT+GSN" commond to get device IMEI */
+        if (at_obj_exec_cmd(device->client, resp, "AT+GSN") < 0)
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        if (at_resp_parse_line_args(resp, 2, "%s", imei) <= 0)
+        {
+            LOG_E("%s device prase \"AT+GSN\" cmd error.", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        LOG_D("%s device IMEI number: %s", device->name, imei);
+
+        netdev->hwaddr_len = M6315_NETDEV_HWADDR_LEN;
+        /* get hardware address by IMEI */
+        for (i = 0, j = 0; i < M6315_NETDEV_HWADDR_LEN && j < M6315_IMEI_LEN; i++, j += 2)
+        {
+            if (j != M6315_IMEI_LEN - 1)
+            {
+                netdev->hwaddr[i] = (imei[j] - '0') * 10 + (imei[j + 1] - '0');
+            }
+            else
+            {
+                netdev->hwaddr[i] = (imei[j] - '0');
+            }
+        }
+    }
+
+    /* set network interface device IP address */
+    {
+        #define IP_ADDR_SIZE_MAX    16
+        char ipaddr[IP_ADDR_SIZE_MAX] = {0};
+
+        at_resp_set_info(resp, M6315_IPADDR_RESP_SIZE, 2, M6315_INFO_RESP_TIMO);
+
+        /* send "AT+QILOCIP" commond to get IP address */
+        if (at_obj_exec_cmd(device->client, resp, "AT+QILOCIP") < 0)
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        if (at_resp_parse_line_args_by_kw(resp, ".", "%s", ipaddr) <= 0)
+        {
+            LOG_E("%s device prase \"AT+QILOCIP\" cmd error.", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        LOG_D("%s device IP address: %s", device->name, ipaddr);
+
+        /* set network interface address information */
+        inet_aton(ipaddr, &addr);
+        netdev_low_level_set_ipaddr(netdev, &addr);
+    }
+
+    /* set network interface device dns server */
+    {
+        #define DNS_ADDR_SIZE_MAX   16
+        char dns_server1[DNS_ADDR_SIZE_MAX] = {0}, dns_server2[DNS_ADDR_SIZE_MAX] = {0};
+
+        at_resp_set_info(resp, M6315_DNS_RESP_SIZE, 0, M6315_INFO_RESP_TIMO);
+
+        /* send "AT+QIDNSCFG?" commond to get DNS servers address */
+        if (at_obj_exec_cmd(device->client, resp, "AT+QIDNSCFG?") < 0)
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        if (at_resp_parse_line_args_by_kw(resp, "PrimaryDns:", "PrimaryDns:%s", dns_server1) <= 0 ||
+            at_resp_parse_line_args_by_kw(resp, "SecondaryDns:", "SecondaryDns:%s", dns_server2) <= 0)
+        {
+            LOG_E("%s device prase \"AT+QIDNSCFG?\" cmd error.", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        LOG_D("%s device primary DNS server address: %s", device->name, dns_server1);
+        LOG_D("%s device secondary DNS server address: %s", device->name, dns_server2);
+
+        inet_aton(dns_server1, &addr);
+        netdev_low_level_set_dns_server(netdev, 0, &addr);
+
+        inet_aton(dns_server2, &addr);
+        netdev_low_level_set_dns_server(netdev, 1, &addr);
+    }
+
+__exit:
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    return result;
+}
+
+static void check_link_status_entry(void *parameter)
+{
+#define M6315_LINK_STATUS_OK   1
+#define M6315_LINK_RESP_SIZE   64
+#define M6315_LINK_RESP_TIMO   (3 * RT_TICK_PER_SECOND)
+#define M6315_LINK_DELAY_TIME  (30 * RT_TICK_PER_SECOND)
+
+    at_response_t resp = RT_NULL;
+    int result_code, link_status;
+    struct at_device *device = RT_NULL;
+    struct netdev *netdev = (struct netdev *)parameter;
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_NETDEV, netdev->name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get device(%s) failed.", netdev->name);
+        return;
+    }
+
+    resp = at_create_resp(M6315_LINK_RESP_SIZE, 0, M6315_LINK_RESP_TIMO);
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for resp create.");
+        return;
+    }
+
+    while (1)
+    {
+        /* send "AT+CGREG?" commond  to check netweork interface device link status */
+        if (at_obj_exec_cmd(device->client, resp, "AT+CGREG?") < 0)
+        {
+            rt_thread_mdelay(M6315_LINK_DELAY_TIME);
+
+            continue;
+        }
+
+        link_status = -1;
+        at_resp_parse_line_args_by_kw(resp, "+CGREG:", "+CGREG: %d,%d", &result_code, &link_status);
+
+        /* check the network interface device link status  */
+        if ((M6315_LINK_STATUS_OK == link_status) != netdev_is_link_up(netdev))
+        {
+            netdev_low_level_set_link_status(netdev, (M6315_LINK_STATUS_OK == link_status));
+        }
+
+        rt_thread_mdelay(M6315_LINK_DELAY_TIME);
+    }
+}
+
+static int m6315_netdev_check_link_status(struct netdev *netdev)
+{
+#define M6315_LINK_THREAD_TICK           20
+#define M6315_LINK_THREAD_STACK_SIZE     (1024 + 512)
+#define M6315_LINK_THREAD_PRIORITY       (RT_THREAD_PRIORITY_MAX - 2)
+
+    rt_thread_t tid;
+    char tname[RT_NAME_MAX] = {0};
+
+    RT_ASSERT(netdev);
+
+    rt_snprintf(tname, RT_NAME_MAX, "%s", netdev->name);
+
+    tid = rt_thread_create(tname, check_link_status_entry, (void *) netdev,
+            M6315_LINK_THREAD_STACK_SIZE, M6315_LINK_THREAD_PRIORITY, M6315_LINK_THREAD_TICK);
+    if (tid)
+    {
+        rt_thread_startup(tid);
+    }
+
+    return RT_EOK;
+}
+
+static int m6315_net_init(struct at_device *device);
+
+static int m6315_netdev_set_up(struct netdev *netdev)
+{
+    struct at_device *device = RT_NULL;
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_NETDEV, netdev->name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get device(%s) failed.", netdev->name);
+        return -RT_ERROR;
+    }
+
+    if (device->is_init == RT_FALSE)
+    {
+        m6315_net_init(device);
+        device->is_init = RT_TRUE;
+
+        netdev_low_level_set_status(netdev, RT_TRUE);
+        LOG_D("network interface device(%s) set up status.", netdev->name);
+    }
+
+    return RT_EOK;
+}
+
+static int m6315_netdev_set_down(struct netdev *netdev)
+{
+    struct at_device *device = RT_NULL;
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_NETDEV, netdev->name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get device(%s) failed.", netdev->name);
+        return -RT_ERROR;
+    }
+
+    if (device->is_init == RT_TRUE)
+    {
+        m6315_power_off(device);
+        device->is_init = RT_FALSE;
+
+        netdev_low_level_set_status(netdev, RT_FALSE);
+        LOG_D("network interface device(%s) set down status.", netdev->name);
+    }
+
+    return RT_EOK;
+}
+
+static int m6315_netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, ip_addr_t *dns_server)
+{
+#define M6315_DNS_RESP_LEN     8
+#define M6315_DNS_RESP_TIMEO   rt_tick_from_millisecond(300)
+
+    int result = RT_EOK;
+    at_response_t resp = RT_NULL;
+    struct at_device *device = RT_NULL;
+
+    RT_ASSERT(netdev);
+    RT_ASSERT(dns_server);
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_NETDEV, netdev->name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get device(%s) failed.", netdev->name);
+        return -RT_ERROR;
+    }
+
+    resp = at_create_resp(M6315_DNS_RESP_LEN, 0, M6315_DNS_RESP_TIMEO);
+    if (resp == RT_NULL)
+    {
+        LOG_D("no memory for resp create.");
+        result = -RT_ENOMEM;
+        goto __exit;
+    }
+
+    /* send "AT+QIDNSCFG=<pri_dns>[,<sec_dns>]" commond to set dns servers */
+    if (at_obj_exec_cmd(device->client, resp, "AT+QIDNSCFG=\"%s\"", inet_ntoa(*dns_server)) < 0)
+    {
+        result = -RT_ERROR;
+        goto __exit;
+    }
+
+    netdev_low_level_set_dns_server(netdev, dns_num, dns_server);
+
+__exit:
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    return result;
+}
+
+
+#ifdef NETDEV_USING_PING
+static int m6315_netdev_ping(struct netdev *netdev, const char *host,
+        size_t data_len, uint32_t timeout, struct netdev_ping_resp *ping_resp)
+{
+#define M6315_PING_RESP_SIZE         128
+#define M6315_PING_IP_SIZE           16
+#define M6315_PING_TIMEO             (5 * RT_TICK_PER_SECOND)
+    int result = -RT_ERROR;
+    int response, time, ttl, bytes;
+    char ip_addr[M6315_PING_IP_SIZE] = {0};
+    at_response_t resp = RT_NULL;
+    struct at_device *device = RT_NULL;
+    int sent, recv, lost, min, max, avg;
+		
+    RT_ASSERT(netdev);
+    RT_ASSERT(host);
+    RT_ASSERT(ping_resp);
+
+    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_NETDEV, netdev->name);
+    if (device == RT_NULL)
+    {
+        LOG_E("get device(%s) failed.", netdev->name);
+        return -RT_ERROR;
+    }
+
+    /* Response line number set six because no \r\nOK\r\n at the end*/
+    resp = at_create_resp(M6315_PING_RESP_SIZE, 6, M6315_PING_TIMEO);
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for resp create.");
+        result = -RT_ERROR;
+        goto __exit;
+    }
+
+    /* send "AT+QPING="<host>"[,[<timeout>][,<pingnum>]]" timeout:1-255 second, pingnum:1-10, commond to send ping request */
+    at_obj_exec_cmd(device->client, resp, "AT+QPING= \"%s\", 100, 1", host);
+    sscanf(at_resp_get_line_by_kw(resp, "+QPING:"), "+QPING:%d,%*s", &response);
+    switch (response)
+    {
+    case 0:
+        if (at_resp_parse_line_args(resp, 4, "+QPING: %d, %[^,], %d, %d, %d",
+            &response, ip_addr, &bytes, &time, &ttl) != RT_NULL) 
+        {
+            /* ping result reponse at the sixth line */
+            if (at_resp_parse_line_args(resp, 6, "+QPING: %d, %d, %d, %d, %d, %d, %d",
+                 &response, &sent, &recv, &lost, &min, &max, &avg) != RT_NULL) 
+            {
+                // ping result 2
+                if (response == 2)  
+                {
+                    inet_aton(ip_addr, &(ping_resp->ip_addr));
+                    ping_resp->data_len = bytes;
+                    ping_resp->ticks = time;
+                    ping_resp->ttl = ttl;
+                    result = RT_EOK;
+                }
+            }
+        }
+        break;
+    case 1:
+        LOG_E("%s device Ping request timeout.", device->name);
+        break;
+    case 3:
+        LOG_E("%s device TCP/IP stack is busy.", device->name);
+        break;
+    case 4:
+        LOG_E("%s device Remote server not found.", device->name);
+        break;
+    case 5:
+        LOG_E("%s device Activate PDP context failed.", device->name);
+        break;
+    default:
+        break;
+    }    
+
+
+ __exit:
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    return result;
+}
+#endif /* NETDEV_USING_PING */
+
+const struct netdev_ops m6315_netdev_ops =
+{
+    m6315_netdev_set_up,
+    m6315_netdev_set_down,
+
+    RT_NULL, /* not support set ip, netmask, gatway address */
+    m6315_netdev_set_dns_server,
+    RT_NULL, /* not support set DHCP status */
+
+#ifdef NETDEV_USING_PING
+    m6315_netdev_ping,
+#endif
+    RT_NULL,
+};
+
+static struct netdev *m6315_netdev_add(const char *netdev_name)
+{
+#define M6315_NETDEV_MTU       1500
+    struct netdev *netdev = RT_NULL;
+
+    RT_ASSERT(netdev_name);
+
+    netdev = (struct netdev *) rt_calloc(1, sizeof(struct netdev));
+    if (netdev == RT_NULL)
+    {
+        LOG_E("no memory for netdev create.");
+        return RT_NULL;
+    }
+
+    netdev->mtu = M6315_NETDEV_MTU;
+    netdev->ops = &m6315_netdev_ops;
+
+#ifdef SAL_USING_AT
+    extern int sal_at_netdev_set_pf_info(struct netdev *netdev);
+    /* set the network interface socket/netdb operations */
+    sal_at_netdev_set_pf_info(netdev);
+#endif
+
+    netdev_register(netdev, netdev_name, RT_NULL);
+
+    return netdev;
+}
+
+/* =============================  m6315 device operations ============================= */
+
+#define AT_SEND_CMD(client, resp, resp_line, timeout, cmd)                                         \
+    do {                                                                                           \
+        (resp) = at_resp_set_info((resp), 128, (resp_line), rt_tick_from_millisecond(timeout));    \
+        if (at_obj_exec_cmd((client), (resp), (cmd)) < 0)                                          \
+        {                                                                                          \
+            result = -RT_ERROR;                                                                    \
+            goto __exit;                                                                           \
+        }                                                                                          \
+    } while(0)                                                                                     \
+
+/* init for m6315 */
+static void m6315_init_thread_entry(void *parameter)
+{
+#define INIT_RETRY                     5
+#define CPIN_RETRY                     10
+#define CSQ_RETRY                      10
+#define CREG_RETRY                     10
+#define CGREG_RETRY                    20
+#define CGATT_RETRY                    10
+#define IPADDR_RETRY                   10
+#define COMMON_RETRY                   10
+
+    int i, qimux, retry_num = INIT_RETRY;
+    char parsed_data[10] = {0};
+    rt_err_t result = RT_EOK;
+    at_response_t resp = RT_NULL;
+    struct at_device *device = (struct at_device *)parameter;
+    struct at_client *client = device->client;
+
+    resp = at_create_resp(128, 0, rt_tick_from_millisecond(500));   
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for resp create.");
+        return;
+    }
+
+    LOG_D("start init %s device", device->name);
+
+    while (retry_num--)
+    {
+        rt_memset(parsed_data, 0, sizeof(parsed_data));
+        rt_thread_mdelay(500);
+        m6315_power_on(device);
+        rt_thread_mdelay(1000);
+
+        /* wait m6315 startup finish */
+        if (at_client_obj_wait_connect(client, M6315_WAIT_CONNECT_TIME))
+        {
+            result = -RT_ETIMEOUT;
+            goto __exit;
+        }
+								
+        /* disable echo */
+        AT_SEND_CMD(client, resp, 0, 300, "ATE0");
+        /* get module version */
+        AT_SEND_CMD(client, resp, 0, 300, "ATI");
+        /* show module version */
+        for (i = 0; i < (int)resp->line_counts - 1; i++)
+        {
+            LOG_D("%s", at_resp_get_line(resp, i + 1));
+        }
+        /* check SIM card */
+        for (i = 0; i < CPIN_RETRY; i++)
+        {
+            AT_SEND_CMD(client, resp, 2, 5 * RT_TICK_PER_SECOND, "AT+CPIN?");
+
+            if (at_resp_get_line_by_kw(resp, "READY"))
+            {
+                LOG_D("%s device SIM card detection success.", device->name);
+                break;
+            }
+            rt_thread_mdelay(1000);
+        }
+        if (i == CPIN_RETRY)
+        {
+            LOG_E("%s device SIM card detection failed.", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+        /* waiting for dirty data to be digested */
+        rt_thread_mdelay(10);
+
+        /* check the GSM network is registered */
+        for (i = 0; i < CREG_RETRY; i++)
+        {
+            AT_SEND_CMD(client, resp, 0, 300, "AT+CREG?");
+            at_resp_parse_line_args_by_kw(resp, "+CREG:", "+CREG: %s", &parsed_data);
+            if (!strncmp(parsed_data, "0,1", strlen(parsed_data)) ||
+                !strncmp(parsed_data, "0,5", strlen(parsed_data)))
+            {
+                LOG_D("%s device GSM is registered(%s),", device->name, parsed_data);
+                break;
+            }
+            rt_thread_mdelay(1000);
+        }
+        if (i == CREG_RETRY)
+        {
+            LOG_E("%s device GSM is register failed(%s).", device->name, parsed_data);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+
+        /* check packet domain attach or detach */
+        for (i = 0; i < CGATT_RETRY; i++)
+        {
+            AT_SEND_CMD(client, resp, 0, 300, "AT+CGATT?");
+            at_resp_parse_line_args_by_kw(resp, "+CGATT:", "+CGATT: %s", &parsed_data);
+            if (!strncmp(parsed_data, "1", 1))
+            {
+                LOG_D("%s device Packet domain attach.", device->name);
+                break;
+            }
+
+            rt_thread_mdelay(1000);
+        }
+        if (i == CGATT_RETRY)
+        {
+            LOG_E("%s device GPRS attach failed.", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* Define PDP Context */
+        for (i = 0; i < COMMON_RETRY; i++)
+        {            
+            if (at_obj_exec_cmd(device->client, resp, "AT+CGDCONT=1,\"IP\",\"CMNET\"") == RT_EOK)
+            {
+                LOG_D("%s device Define PDP Context Success.", device->name);
+                break;
+            }
+            rt_thread_mdelay(1000);
+        }
+        if (i == COMMON_RETRY)
+        {
+            LOG_E("%s device Define PDP Context failed.", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* PDP Context Activate*/
+        for (i = 0; i < COMMON_RETRY; i++)
+        {            
+            if (at_obj_exec_cmd(device->client, resp, "AT+CGACT=1,1") == RT_EOK)
+            {
+                LOG_D("%s device PDP Context Activate Success.", device->name);
+                break;
+            }
+            rt_thread_mdelay(1000);
+        }
+        if (i == COMMON_RETRY)
+        {
+            LOG_E("%s device PDP Context Activate failed.", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* check the GPRS network is registered */
+        for (i = 0; i < CGREG_RETRY; i++)
+        {
+            AT_SEND_CMD(client, resp, 0, 300, "AT+CGREG?");
+            at_resp_parse_line_args_by_kw(resp, "+CGREG:", "+CGREG: %s", &parsed_data);
+            if (!strncmp(parsed_data, "0,1", strlen(parsed_data)) ||
+                !strncmp(parsed_data, "0,5", strlen(parsed_data)))
+            {
+                LOG_D("%s device GPRS is registered(%s).", device->name, parsed_data);
+                break;
+            }
+            rt_thread_mdelay(1000);
+        }
+        if (i == CGREG_RETRY)
+        {
+            LOG_E("%s device GPRS is register failed(%s).", device->name, parsed_data);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* check signal strength */
+        for (i = 0; i < CSQ_RETRY; i++)
+        {
+            AT_SEND_CMD(client, resp, 2, 300, "AT+CSQ");
+            at_resp_parse_line_args_by_kw(resp, "+CSQ:", "+CSQ: %s", &parsed_data);
+            if (strncmp(parsed_data, "99,99", strlen(parsed_data)))
+            {
+                LOG_D("%s device signal strength: %s", device->name, parsed_data);
+                break;
+            }
+            rt_thread_mdelay(1000);
+        }
+        if (i == CSQ_RETRY)
+        {
+            LOG_E("%s device signal strength check failed (%s)", device->name, parsed_data);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* check the GPRS network IP address */
+        for (i = 0; i < IPADDR_RETRY; i++)
+        {            
+            if (at_obj_exec_cmd(device->client, resp, "AT+CGPADDR=1") == RT_EOK)
+            {
+                #define IP_ADDR_SIZE_MAX    16
+                char ipaddr[IP_ADDR_SIZE_MAX] = {0};
+                
+                /* parse response data "+CGPADDR: 1,<IP_address>" */
+                if (at_resp_parse_line_args_by_kw(resp, "+CGPADDR:", "+CGPADDR: %*d,%s", ipaddr) > 0)
+                {
+                    LOG_D("%s device IP address: %s", device->name, ipaddr);
+                    break;
+                }
+            }
+            rt_thread_mdelay(1000);
+        }
+        if (i == IPADDR_RETRY)
+        {
+            LOG_E("%s device GPRS is get IP address failed", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        /* Set to multiple connections */
+        AT_SEND_CMD(client, resp, 0, 300, "AT+QIMUX?");
+        at_resp_parse_line_args_by_kw(resp, "+QIMUX:", "+QIMUX: %d", &qimux);
+        if (qimux == 0)
+        {
+            AT_SEND_CMD(client, resp, 0, 300, "AT+QIMUX=1");
+        }
+        else if (qimux == 1)
+        {
+            /* Close Already Opened GPRS/CSD PDP*/                         
+            AT_SEND_CMD(device->client, resp, 2, 300, "AT+QIDEACT");
+            if (at_resp_get_line_by_kw(resp, "DEACT OK") == RT_NULL)
+            {
+                LOG_E("%s device prase \"AT+QIDEACT\" cmd error.", device->name);
+                result = -RT_ERROR;
+                goto __exit;
+            }                   
+        }
+        
+        /* Start task & set entry point default apn,username,password */
+        if (at_obj_exec_cmd(device->client, resp, "AT+QIREGAPP") < 0)
+        {
+            LOG_E("%s device Start task & set default params failed.", device->name);
+            result = -RT_ERROR;
+            goto __exit;            
+        }
+
+        /* PDP Context Activate */
+        if (at_obj_exec_cmd(device->client, resp, "AT+QIACT") < 0)
+        {
+            LOG_E("%s device PDP Context Activate failed.", device->name);
+            result = -RT_ERROR;
+            goto __exit;
+        }          
+
+        /* initialize successfully  */
+        result = RT_EOK;
+        break;
+
+    __exit:
+        if (result != RT_EOK)
+        {
+            /* power off the m6315 device */
+            m6315_power_off(device);
+            rt_thread_mdelay(1000);
+
+            LOG_I("%s device initialize retry...", device->name);
+        }
+    }
+
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    if (result == RT_EOK)
+    {
+        /* set network interface device status and address information */
+        m6315_netdev_set_info(device->netdev);
+        /* check and create link staus sync thread  */
+        if (rt_thread_find(device->netdev->name) == RT_NULL)
+        {
+            m6315_netdev_check_link_status(device->netdev);
+        }
+
+        LOG_I("%s device network initialize success!", device->name);
+
+    }
+    else
+    {
+        LOG_E("%s device network initialize failed(%d)!", device->name, result);
+    }
+}
+
+static int m6315_net_init(struct at_device *device)
+{
+#ifdef AT_DEVICE_M6315_INIT_ASYN
+    rt_thread_t tid;
+
+    tid = rt_thread_create("m6315_net", m6315_init_thread_entry, (void *)device,
+                M6315_THREAD_STACK_SIZE, M6315_THREAD_PRIORITY, 20);
+    if (tid)
+    {
+        rt_thread_startup(tid);
+    }
+    else
+    {
+        LOG_E("create %s device init thread failed.", device->name);
+        return -RT_ERROR;
+    }
+#else
+    m6315_init_thread_entry(device);
+#endif /* AT_DEVICE_M6315_INIT_ASYN */
+
+    return RT_EOK;
+}
+
+static void urc_func(struct at_client *client, const char *data, rt_size_t size)
+{
+    RT_ASSERT(data);
+
+    LOG_I("URC data : %.*s", size, data);
+}
+
+
+/* m6315 device URC table for the device control */
+static const struct at_urc urc_table[] =
+{
+    {"RDY",         "\r\n",                 urc_func},
+    {"+PDP DEACT",  "\r\n",                 urc_func},
+};
+
+static int m6315_init(struct at_device *device)
+{
+    struct at_device_m6315 *m6315 = (struct at_device_m6315 *) device->user_data;
+
+    /* initialize AT client */
+    at_client_init(m6315->client_name, m6315->recv_line_num);
+
+    device->client = at_client_get(m6315->client_name);
+    if (device->client == RT_NULL)
+    {
+        LOG_E("get AT client(%s) failed.", m6315->client_name);
+        return -RT_ERROR;
+    }
+
+    /* register URC data execution function  */
+    at_obj_set_urc_table(device->client, urc_table, sizeof(urc_table) / sizeof(urc_table[0]));
+
+#ifdef AT_USING_SOCKET
+    m6315_socket_init(device);
+#endif
+
+    /* add m6315 device to the netdev list */
+    device->netdev = m6315_netdev_add(m6315->device_name);
+    if (device->netdev == RT_NULL)
+    {
+        LOG_E("get netdev(%s) failed.", m6315->device_name);
+        return -RT_ERROR;
+    }
+
+    /* initialize m6315 pin configuration */
+    if (m6315->power_pin != -1 && m6315->power_status_pin != -1)
+    {
+        rt_pin_mode(m6315->power_pin, PIN_MODE_OUTPUT);
+        rt_pin_mode(m6315->power_status_pin, PIN_MODE_INPUT);
+    }
+
+    /* initialize m6315 device network */
+    return m6315_netdev_set_up(device->netdev);
+}
+
+static int m6315_deinit(struct at_device *device)
+{
+    return m6315_netdev_set_down(device->netdev);
+}
+
+static int m6315_control(struct at_device *device, int cmd, void *arg)
+{
+    int result = -RT_ERROR;
+
+    RT_ASSERT(device);
+
+    switch (cmd)
+    {
+    case AT_DEVICE_CTRL_POWER_ON:
+    case AT_DEVICE_CTRL_POWER_OFF:
+    case AT_DEVICE_CTRL_RESET:
+    case AT_DEVICE_CTRL_LOW_POWER:
+    case AT_DEVICE_CTRL_SLEEP:
+    case AT_DEVICE_CTRL_WAKEUP:
+    case AT_DEVICE_CTRL_NET_CONN:
+    case AT_DEVICE_CTRL_NET_DISCONN:
+    case AT_DEVICE_CTRL_SET_WIFI_INFO:
+    case AT_DEVICE_CTRL_GET_SIGNAL:
+    case AT_DEVICE_CTRL_GET_GPS:
+    case AT_DEVICE_CTRL_GET_VER:
+        LOG_W("not support the control command(%d).", cmd);
+        break;
+    default:
+        LOG_E("input error control command(%d).", cmd);
+        break;
+    }
+
+    return result;
+}
+
+const struct at_device_ops m6315_device_ops =
+{
+    m6315_init,
+    m6315_deinit,
+    m6315_control,
+};
+
+static int m6315_device_class_register(void)
+{
+    struct at_device_class *class = RT_NULL;
+
+    class = (struct at_device_class *) rt_calloc(1, sizeof(struct at_device_class));
+    if (class == RT_NULL)
+    {
+        LOG_E("no memory for device class create.");
+        return -RT_ENOMEM;
+    }
+
+    /* fill m6315 device class object */
+#ifdef AT_USING_SOCKET
+    m6315_socket_class_register(class);
+#endif
+    class->device_ops = &m6315_device_ops;
+
+    return at_device_class_register(class, AT_DEVICE_CLASS_M6315);
+}
+INIT_DEVICE_EXPORT(m6315_device_class_register);
+
+#endif /* AT_DEVICE_USING_M6315 */

class/m6315/at_device_m6315.h

@@ -0,0 +1,66 @@
+/*
+ * File      : at_device_m6315.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_M6315_H__
+#define __AT_DEVICE_M6315_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+
+#include <at_device.h>
+
+/* The maximum number of sockets supported by the m6315 device */
+#define AT_DEVICE_M6315_SOCKETS_NUM      8
+
+struct at_device_m6315
+{
+    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
+
+/* m6315 device socket initialize */
+int m6315_socket_init(struct at_device *device);
+
+/* m6315 device class socket register */
+int m6315_socket_class_register(struct at_device_class *class);
+
+#endif /* AT_USING_SOCKET */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AT_DEVICE_M6315_H__ */

class/m6315/at_socket_m6315.c

@@ -0,0 +1,636 @@
+/*
+ * File      : at_socket_m6315.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_m6315.h>
+
+#define LOG_TAG                        "at.skt.m6315"
+#include <at_log.h>
+
+#if defined(AT_DEVICE_USING_M6315) && defined(AT_USING_SOCKET)
+
+#define M6315_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 M6315_EVENT_CONN_OK          (1L << 0)
+#define M6315_EVENT_SEND_OK          (1L << 1)
+#define M6315_EVENT_RECV_OK          (1L << 2)
+#define M6315_EVNET_CLOSE_OK         (1L << 3)
+#define M6315_EVENT_CONN_FAIL        (1L << 4)
+#define M6315_EVENT_SEND_FAIL        (1L << 5)
+#define M6315_EVENT_CONN_ALREADY     (1L << 6)
+
+static at_evt_cb_t at_evt_cb_set[] = {
+        [AT_SOCKET_EVT_RECV] = NULL,
+        [AT_SOCKET_EVT_CLOSED] = NULL,
+};
+
+static int m6315_socket_event_send(struct at_device *device, uint32_t event)
+{
+    return (int) rt_event_send(device->socket_event, event);
+}
+
+static int m6315_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 m6315_socket_close(struct at_socket *socket)
+{
+    uint32_t event = 0;
+    int result = RT_EOK;
+    int device_socket = (int) socket->user_data;
+    struct at_device *device = (struct at_device *) socket->device;
+    
+    /* clear socket close event */
+    event = SET_EVENT(device_socket, M6315_EVNET_CLOSE_OK);
+    m6315_socket_event_recv(device, event, 0, RT_EVENT_FLAG_OR);
+    
+    if (at_obj_exec_cmd(device->client, NULL, "AT+QICLOSE=%d", device_socket) < 0)
+    {
+        result = -RT_ERROR;
+        goto __exit;
+    }
+
+    if (m6315_socket_event_recv(device, event, rt_tick_from_millisecond(300*3), RT_EVENT_FLAG_AND) < 0)
+    {
+        LOG_E("%s device socket(%d) wait close OK timeout.", device->name, device_socket);
+        result = -RT_ETIMEOUT;
+        goto __exit;
+    }
+
+__exit:    
+    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 m6315_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 resp create.");
+        return -RT_ENOMEM;
+    }
+
+__retry:
+
+    /* clear socket connect event */
+    event = SET_EVENT(device_socket, M6315_EVENT_CONN_OK | M6315_EVENT_CONN_FAIL | M6315_EVENT_CONN_ALREADY);
+    m6315_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+QIOPEN=%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+QIOPEN=%d,\"UDP\",\"%s\",%d", device_socket, ip, port) < 0)
+            {
+                result = -RT_ERROR;
+                goto __exit;
+            }
+            break;
+
+        default:
+            LOG_E("%s device 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 (m6315_socket_event_recv(device, SET_EVENT(device_socket, 0), 10 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR) < 0)
+    {
+        LOG_E("%s device socket(%d) wait connect result timeout.", device->name, device_socket);
+        result = -RT_ETIMEOUT;
+        goto __exit;
+    }
+    /* waiting OK or failed result */
+    event_result = m6315_socket_event_recv(device,
+            M6315_EVENT_CONN_OK | M6315_EVENT_CONN_FAIL | M6315_EVENT_CONN_ALREADY, 1 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR);
+    if (event_result < 0)
+    {
+        LOG_E("%s device socket(%d) wait connect OK|FAIL|ALREADY timeout.", device->name, device_socket);
+        result = -RT_ETIMEOUT;
+        goto __exit;
+    }
+    /* check result */
+    if (event_result & M6315_EVENT_CONN_FAIL)
+    {
+        if (retryed == RT_FALSE)
+        {
+            LOG_D("%s device socket(%d) connect failed, the socket was not be closedand now will connect retry.",
+                    device->name, device_socket);
+            if (m6315_socket_close(socket) < 0)
+            {
+                result = -RT_ERROR;
+                goto __exit;
+            }
+            retryed = RT_TRUE;
+            goto __retry;
+        }
+        LOG_E("%s device socket(%d) connect failed.", device->name, device_socket);
+        result = -RT_ERROR;
+        goto __exit;
+    }
+
+__exit:
+    if (resp)
+    {
+        at_delete_resp(resp);
+    }
+
+    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 m6315_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, 20 * RT_TICK_PER_SECOND);
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for resp create.");
+        return -RT_ENOMEM;
+    }
+
+    rt_mutex_take(lock, RT_WAITING_FOREVER);
+
+    /* clear socket connect event */
+    event = SET_EVENT(device_socket, M6315_EVENT_SEND_OK | M6315_EVENT_SEND_FAIL);
+    m6315_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 < M6315_MODULE_SEND_MAX_SIZE)
+        {
+            cur_pkt_size = bfsz - sent_size;
+        }
+        else
+        {
+            cur_pkt_size = M6315_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+QISEND=%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 (m6315_socket_event_recv(device, SET_EVENT(device_socket, 0), 20 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR) < 0)
+        {
+            LOG_E("%s device socket(%d) wait send result timeout.", device->name, device_socket);
+            result = -RT_ETIMEOUT;
+            goto __exit;
+        }
+        /* waiting OK or failed result */
+        event_result = m6315_socket_event_recv(device,
+                M6315_EVENT_SEND_OK | M6315_EVENT_SEND_FAIL, 15 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR);
+        if (event_result < 0)
+        {
+            LOG_E("%s device socket(%d) wait send connect OK|FAIL timeout.", device->name, device_socket);
+            result = -RT_ETIMEOUT;
+            goto __exit;
+        }
+        /* check result */
+        if (event_result & M6315_EVENT_SEND_FAIL)
+        {
+            LOG_E("%s device 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 > 0 ? sent_size : 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 m6315_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 init device failed.");
+        return -RT_ERROR;
+    }
+
+    /* The maximum response time is 20 seconds, affected by network status */
+    resp = at_create_resp(128, 4, 20 * RT_TICK_PER_SECOND);
+    if (resp == RT_NULL)
+    {
+        LOG_E("no memory for resp create.");
+        return -RT_ENOMEM;
+    }
+
+    for (i = 0; i < RESOLVE_RETRY; i++)
+    {
+
+        if (at_obj_exec_cmd(device->client, resp, "AT+QIDNSGIP=\"%s\"", name) < 0)      //MODIFY name
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+
+        if (at_resp_parse_line_args(resp, 4, "%s", 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 m6315_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 device(%s) failed.", client_name);
+        return;
+    }
+
+    if (strstr(data, "ALREADY CONNECT"))
+    {
+        m6315_socket_event_send(device, SET_EVENT(device_socket, M6315_EVENT_CONN_ALREADY));
+        return;
+    }    
+
+    /* get the current socket by receive data */
+    sscanf(data, "%d,%*s", &device_socket);
+
+    if (strstr(data, "CONNECT OK"))
+    {
+        m6315_socket_event_send(device, SET_EVENT(device_socket, M6315_EVENT_CONN_OK));
+    }
+    else if (strstr(data, "CONNECT FAIL"))
+    {
+        m6315_socket_event_send(device, SET_EVENT(device_socket, M6315_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 device(%s) failed.", client_name);
+        return;
+    }
+
+    /* get the current socket by receive data */
+//    sscanf(data, "%d,%*s", &device_socket);
+
+    if (rt_strstr(data, "SEND OK"))
+    {
+        m6315_socket_event_send(device, SET_EVENT(device_socket, M6315_EVENT_SEND_OK));
+    }
+    else if (rt_strstr(data, "SEND FAIL"))
+    {
+        m6315_socket_event_send(device, SET_EVENT(device_socket, M6315_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 device(%s) failed.", client_name);
+        return;
+    }
+
+    /* get the current socket by receive data */
+    sscanf(data, "%d,%*s", &device_socket);
+
+    if (rt_strstr(data, "CLOSE OK"))
+    {
+        m6315_socket_event_send(device, SET_EVENT(device_socket, M6315_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);
+    /* set receive timeout by receive buffer length, not less than 10 ms */
+    timeout = bfsz > 10 ? bfsz : 10;
+
+    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 device(%s) failed.", client_name);
+        return;
+    }
+
+    recv_buf = (char *) rt_calloc(1, bfsz);
+    if (recv_buf == RT_NULL)
+    {
+        LOG_E("no memory for receive buffer(%d).", 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("%s device 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);
+    }
+}
+
+/* m6315 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},
+    {"",            "ALREADY CONNECT\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 m6315_socket_ops =
+{
+    m6315_socket_connect,
+    m6315_socket_close,
+    m6315_socket_send,
+    m6315_domain_resolve,
+    m6315_socket_set_event_cb,
+};
+
+int m6315_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 m6315_socket_class_register(struct at_device_class *class)
+{
+    RT_ASSERT(class);
+
+    class->socket_num = AT_DEVICE_M6315_SOCKETS_NUM;
+    class->socket_ops = &m6315_socket_ops;
+
+    return RT_EOK;
+}
+
+#endif /* AT_DEVICE_USING_M6315 && AT_USING_SOCKET */