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at_device/at_socket_sim800c.c
chenyong 7d16f36a54 【修改】ec20、m26、sim800c 等模块部分命令发送修改为 resp 响应模式 
Signed-off-by: chenyong <1521761801@qq.com>
2019-05-25 11:43:31 +08:00

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/*
* File : at_socket_sim800c.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
*/
#include <stdio.h>
#include <string.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <sys/socket.h>
#include <at.h>
#include <at_socket.h>
#if !defined(RT_USING_NETDEV)
#error "This RT-Thread version is older, please check and updata laster RT-Thread!"
#else
#include <arpa/inet.h>
#include <netdev.h>
#endif /* RT_USING_NETDEV */
#if !defined(AT_SW_VERSION_NUM) || AT_SW_VERSION_NUM < 0x10200
#error "This AT Client version is older, please check and update latest AT Client!"
#endif
#define LOG_TAG "at.sim800c"
#include <at_log.h>
#ifdef AT_DEVICE_SIM800C
#define SIM800C_NETDEV_NAME "sim800c"
#define SIM800C_MODULE_SEND_MAX_SIZE 1000
#define SIM800C_WAIT_CONNECT_TIME 5000
#define SIM800C_THREAD_STACK_SIZE 1024
#define SIM800C_THREAD_PRIORITY (RT_THREAD_PRIORITY_MAX/2)
/* set real event by current socket and current state */
#define SET_EVENT(socket, event) (((socket + 1) << 16) | (event))
/* AT socket event type */
#define SIM800C_EVENT_CONN_OK (1L << 0)
#define SIM800C_EVENT_SEND_OK (1L << 1)
#define SIM800C_EVENT_RECV_OK (1L << 2)
#define SIM800C_EVNET_CLOSE_OK (1L << 3)
#define SIM800C_EVENT_CONN_FAIL (1L << 4)
#define SIM800C_EVENT_SEND_FAIL (1L << 5)
/* AT+CSTT command default*/
char *CSTT_CHINA_MOBILE = "AT+CSTT=\"CMNET\"";
char *CSTT_CHINA_UNICOM = "AT+CSTT=\"UNINET\"";
char *CSTT_CHINA_TELECOM = "AT+CSTT=\"CTNET\"";
static int cur_socket;
static rt_event_t at_socket_event;
static rt_mutex_t at_event_lock;
static at_evt_cb_t at_evt_cb_set[] = {
[AT_SOCKET_EVT_RECV] = NULL,
[AT_SOCKET_EVT_CLOSED] = NULL,
};
static int at_socket_event_send(uint32_t event)
{
return (int) rt_event_send(at_socket_event, event);
}
static int at_socket_event_recv(uint32_t event, uint32_t timeout, rt_uint8_t option)
{
int result = 0;
rt_uint32_t recved;
result = rt_event_recv(at_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 sim800c_socket_close(int socket)
{
int result = 0;
at_response_t resp = RT_NULL;
resp = at_create_resp(128, 0, RT_TICK_PER_SECOND);
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
cur_socket = socket;
/* Clear socket close event */
at_socket_event_recv(SET_EVENT(socket, SIM800C_EVNET_CLOSE_OK), 0, RT_EVENT_FLAG_OR);
if (at_exec_cmd(resp, "AT+CIPCLOSE=%d", socket) < 0)
{
result = -RT_ERROR;
goto __exit;
}
if (at_socket_event_recv(SET_EVENT(socket, SIM800C_EVNET_CLOSE_OK), rt_tick_from_millisecond(300*3), RT_EVENT_FLAG_AND) < 0)
{
LOG_E("socket (%d) close failed, wait close OK timeout.", socket);
result = -RT_ETIMEOUT;
goto __exit;
}
__exit:
rt_mutex_release(at_event_lock);
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 sim800c_socket_connect(int socket, char *ip, int32_t port, enum at_socket_type type, rt_bool_t is_client)
{
int result = 0, event_result = 0;
rt_bool_t retryed = RT_FALSE;
at_response_t resp = RT_NULL;
RT_ASSERT(ip);
RT_ASSERT(port >= 0);
resp = at_create_resp(128, 0, 5 * RT_TICK_PER_SECOND);
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
/* lock AT socket connect */
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
__retry:
/* Clear socket connect event */
at_socket_event_recv(SET_EVENT(socket, SIM800C_EVENT_CONN_OK | SIM800C_EVENT_CONN_FAIL), 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_exec_cmd(resp, "AT+CIPSTART=%d,\"TCP\",\"%s\",%d", socket, ip, port) < 0)
{
result = -RT_ERROR;
goto __exit;
}
break;
case AT_SOCKET_UDP:
if (at_exec_cmd(resp, "AT+CIPSTART=%d,\"UDP\",\"%s\",%d", socket, ip, port) < 0)
{
result = -RT_ERROR;
goto __exit;
}
break;
default:
LOG_E("Not supported connect type : %d.", 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 (at_socket_event_recv(SET_EVENT(socket, 0), 10 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR) < 0)
{
LOG_E("socket (%d) connect failed, wait connect result timeout.", socket);
result = -RT_ETIMEOUT;
goto __exit;
}
/* waiting OK or failed result */
if ((event_result = at_socket_event_recv(SIM800C_EVENT_CONN_OK | SIM800C_EVENT_CONN_FAIL, 1 * RT_TICK_PER_SECOND,
RT_EVENT_FLAG_OR)) < 0)
{
LOG_E("socket (%d) connect failed, wait connect OK|FAIL timeout.", socket);
result = -RT_ETIMEOUT;
goto __exit;
}
/* check result */
if (event_result & SIM800C_EVENT_CONN_FAIL)
{
if (!retryed)
{
LOG_E("socket (%d) connect failed, maybe the socket was not be closed at the last time and now will retry.", socket);
if (sim800c_socket_close(socket) < 0)
{
goto __exit;
}
retryed = RT_TRUE;
goto __retry;
}
LOG_E("socket (%d) connect failed, failed to establish a connection.", socket);
result = -RT_ERROR;
goto __exit;
}
__exit:
/* unlock AT socket connect */
rt_mutex_release(at_event_lock);
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 sim800c_socket_send(int socket, const char *buff, size_t bfsz, enum at_socket_type type)
{
int result = 0, event_result = 0;
at_response_t resp = RT_NULL;
size_t cur_pkt_size = 0, sent_size = 0;
RT_ASSERT(buff);
resp = at_create_resp(128, 2, 5 * RT_TICK_PER_SECOND);
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* Clear socket connect event */
at_socket_event_recv(SET_EVENT(socket, SIM800C_EVENT_SEND_OK | SIM800C_EVENT_SEND_FAIL), 0, RT_EVENT_FLAG_OR);
/* set current socket for send URC event */
cur_socket = socket;
/* set AT client end sign to deal with '>' sign.*/
at_set_end_sign('>');
while (sent_size < bfsz)
{
if (bfsz - sent_size < SIM800C_MODULE_SEND_MAX_SIZE)
{
cur_pkt_size = bfsz - sent_size;
}
else
{
cur_pkt_size = SIM800C_MODULE_SEND_MAX_SIZE;
}
/* send the "AT+QISEND" commands to AT server than receive the '>' response on the first line. */
if (at_exec_cmd(resp, "AT+CIPSEND=%d,%d", socket, cur_pkt_size) < 0)
{
result = -RT_ERROR;
goto __exit;
}
/* send the real data to server or client */
result = (int) at_client_send(buff + sent_size, cur_pkt_size);
if (result == 0)
{
result = -RT_ERROR;
goto __exit;
}
/* waiting result event from AT URC */
if (at_socket_event_recv(SET_EVENT(socket, 0), 10 * RT_TICK_PER_SECOND, RT_EVENT_FLAG_OR) < 0)
{
LOG_E("socket (%d) send failed, wait connect result timeout.", socket);
result = -RT_ETIMEOUT;
goto __exit;
}
/* waiting OK or failed result */
if ((event_result = at_socket_event_recv(SIM800C_EVENT_SEND_OK | SIM800C_EVENT_SEND_FAIL, 5 * RT_TICK_PER_SECOND,
RT_EVENT_FLAG_OR)) < 0)
{
LOG_E("socket (%d) send failed, wait connect OK|FAIL timeout.", socket);
result = -RT_ETIMEOUT;
goto __exit;
}
/* check result */
if (event_result & SIM800C_EVENT_SEND_FAIL)
{
LOG_E("socket (%d) send failed, return failed.", socket);
result = -RT_ERROR;
goto __exit;
}
if (type == AT_SOCKET_TCP)
{
//cur_pkt_size = cur_send_bfsz;
}
sent_size += cur_pkt_size;
}
__exit:
/* reset the end sign for data conflict */
at_set_end_sign(0);
rt_mutex_release(at_event_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 sim800c_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;
RT_ASSERT(name);
RT_ASSERT(ip);
/* The maximum response time is 14 seconds, affected by network status */
resp = at_create_resp(128, 4, 14 * RT_TICK_PER_SECOND);
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
for (i = 0; i < RESOLVE_RETRY; i++)
{
int err_code = 0;
if (at_exec_cmd(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 (strlen(recv_ip) < 8)
{
rt_thread_mdelay(100);
/* resolve failed, maybe receive an URC CRLF */
continue;
}
else
{
strncpy(ip, recv_ip, 15);
ip[15] = '\0';
//LOG_I("DNS IP:%s",ip);
break;
}
}
__exit:
rt_mutex_release(at_event_lock);
if (resp)
{
at_delete_resp(resp);
}
return result;
}
/**
* set AT socket event notice callback
*
* @param event notice event
* @param cb notice callback
*/
static void sim800c_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(const char *data, rt_size_t size)
{
int socket = 0;
RT_ASSERT(data && size);
sscanf(data, "%d,%*", &socket);
if (strstr(data, "CONNECT OK"))
{
at_socket_event_send(SET_EVENT(socket, SIM800C_EVENT_CONN_OK));
}
else if (strstr(data, "CONNECT FAIL"))
{
at_socket_event_send(SET_EVENT(socket, SIM800C_EVENT_CONN_FAIL));
}
}
static void urc_send_func(const char *data, rt_size_t size)
{
RT_ASSERT(data && size);
if (strstr(data, "SEND OK"))
{
at_socket_event_send(SET_EVENT(cur_socket, SIM800C_EVENT_SEND_OK));
}
else if (strstr(data, "SEND FAIL"))
{
at_socket_event_send(SET_EVENT(cur_socket, SIM800C_EVENT_SEND_FAIL));
}
}
static void urc_close_func(const char *data, rt_size_t size)
{
int socket = 0;
RT_ASSERT(data && size);
if (strstr(data, "CLOSE OK"))
{
at_socket_event_send(SET_EVENT(cur_socket, SIM800C_EVNET_CLOSE_OK));
}
else if (strstr(data, "CLOSED"))
{
sscanf(data, "%d, CLOSED", &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, NULL, 0);
}
}
}
static void urc_recv_func(const char *data, rt_size_t size)
{
int socket = 0;
rt_size_t bfsz = 0, temp_size = 0;
rt_int32_t timeout;
char *recv_buf = RT_NULL, temp[8];
RT_ASSERT(data && size);
/* get the current socket and receive buffer size by receive data */
sscanf(data, "+RECEIVE,%d,%d:", &socket, (int *) &bfsz);
/* get receive timeout by receive buffer length */
timeout = bfsz;
if (socket < 0 || bfsz == 0)
return;
recv_buf = rt_calloc(1, bfsz);
if (!recv_buf)
{
LOG_E("no memory for URC receive buffer (%d)!", bfsz);
/* read and clean the coming data */
while (temp_size < bfsz)
{
if (bfsz - temp_size > sizeof(temp))
{
at_client_recv(temp, sizeof(temp), timeout);
}
else
{
at_client_recv(temp, bfsz - temp_size, timeout);
}
temp_size += sizeof(temp);
}
return;
}
/* sync receive data */
if (at_client_recv(recv_buf, bfsz, timeout) != bfsz)
{
LOG_E("receive size(%d) data failed!", bfsz);
rt_free(recv_buf);
return;
}
/* 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);
}
}
static void urc_func(const char *data, rt_size_t size)
{
RT_ASSERT(data);
LOG_I("URC data : %.*s", size, data);
}
static const struct at_urc urc_table[] = {
{"RDY", "\r\n", urc_func},
{"", ", 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},
};
#define AT_SEND_CMD(resp, resp_line, timeout, cmd) \
do \
{ \
if (at_exec_cmd(at_resp_set_info(resp, 128, resp_line, rt_tick_from_millisecond(timeout)), cmd) < 0) \
{ \
result = -RT_ERROR; \
goto __exit; \
} \
} while(0); \
static void sim800c_power_on(void)
{
if (rt_pin_read(AT_DEVICE_STATUS_PIN) == PIN_HIGH)
return;
rt_pin_write(AT_DEVICE_POWER_PIN, PIN_HIGH);
while (rt_pin_read(AT_DEVICE_STATUS_PIN) == PIN_LOW)
{
rt_thread_mdelay(10);
}
rt_pin_write(AT_DEVICE_POWER_PIN, PIN_LOW);
}
static void sim800c_power_off(void)
{
if (rt_pin_read(AT_DEVICE_STATUS_PIN) == PIN_LOW)
return;
rt_pin_write(AT_DEVICE_POWER_PIN, PIN_HIGH);
while (rt_pin_read(AT_DEVICE_STATUS_PIN) == PIN_HIGH)
{
rt_thread_mdelay(10);
}
rt_pin_write(AT_DEVICE_POWER_PIN, PIN_LOW);
}
static int sim800c_netdev_set_info(struct netdev *netdev);
static int sim800c_netdev_check_link_status(struct netdev *netdev);
/* init for SIM800C */
static void sim800c_init_thread_entry(void *parameter)
{
#define CPIN_RETRY 10
#define CSQ_RETRY 10
#define CREG_RETRY 10
#define CGREG_RETRY 20
at_response_t resp = RT_NULL;
int i, qimux;
char parsed_data[10];
rt_err_t result = RT_EOK;
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
while (1)
{
result = RT_EOK;
rt_memset(parsed_data, 0, sizeof(parsed_data));
rt_thread_mdelay(500);
sim800c_power_on();
rt_thread_mdelay(2000);
resp = at_create_resp(128, 0, rt_tick_from_millisecond(300));
if (!resp)
{
LOG_E("No memory for response structure!");
result = -RT_ENOMEM;
goto __exit;
}
LOG_D("Start initializing the SIM800C module");
/* wait SIM800C startup finish */
if (at_client_wait_connect(SIM800C_WAIT_CONNECT_TIME))
{
result = -RT_ETIMEOUT;
goto __exit;
}
/* disable echo */
AT_SEND_CMD(resp, 0, 300, "ATE0");
/* get module version */
AT_SEND_CMD(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_exec_cmd(at_resp_set_info(resp, 128, 2, 5 * RT_TICK_PER_SECOND), "AT+CPIN?");
if (at_resp_get_line_by_kw(resp, "READY"))
{
LOG_D("SIM card detection success");
break;
}
rt_thread_mdelay(1000);
}
if (i == CPIN_RETRY)
{
LOG_E("SIM card detection failed!");
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(resp, 0, 300, "AT+CREG?");
at_resp_parse_line_args_by_kw(resp, "+CREG:", "+CREG: %s", &parsed_data);
if (!strncmp(parsed_data, "0,1", sizeof(parsed_data)) || !strncmp(parsed_data, "0,5", sizeof(parsed_data)))
{
LOG_D("GSM network is registered (%s)", parsed_data);
break;
}
rt_thread_mdelay(1000);
}
if (i == CREG_RETRY)
{
LOG_E("The GSM network is register failed (%s)", parsed_data);
result = -RT_ERROR;
goto __exit;
}
/* check the GPRS network is registered */
for (i = 0; i < CGREG_RETRY; i++)
{
AT_SEND_CMD(resp, 0, 300, "AT+CGREG?");
at_resp_parse_line_args_by_kw(resp, "+CGREG:", "+CGREG: %s", &parsed_data);
if (!strncmp(parsed_data, "0,1", sizeof(parsed_data)) || !strncmp(parsed_data, "0,5", sizeof(parsed_data)))
{
LOG_D("GPRS network is registered (%s)", parsed_data);
break;
}
rt_thread_mdelay(1000);
}
if (i == CGREG_RETRY)
{
LOG_E("The GPRS network is register failed (%s)", parsed_data);
result = -RT_ERROR;
goto __exit;
}
/* check signal strength */
for (i = 0; i < CSQ_RETRY; i++)
{
AT_SEND_CMD(resp, 0, 300, "AT+CSQ");
at_resp_parse_line_args_by_kw(resp, "+CSQ:", "+CSQ: %s", &parsed_data);
if (strncmp(parsed_data, "99,99", sizeof(parsed_data)))
{
LOG_D("Signal strength: %s", parsed_data);
break;
}
rt_thread_mdelay(1000);
}
if (i == CSQ_RETRY)
{
LOG_E("Signal strength check failed (%s)", parsed_data);
result = -RT_ERROR;
goto __exit;
}
/* the device default response timeout is 40 seconds, but it set to 15 seconds is convenient to use. */
AT_SEND_CMD(resp, 2, 20 * 1000, "AT+CIPSHUT");
/* Set to multiple connections */
AT_SEND_CMD(resp, 0, 300, "AT+CIPMUX?");
at_resp_parse_line_args_by_kw(resp, "+CIPMUX:", "+CIPMUX: %d", &qimux);
if (qimux == 0)
{
AT_SEND_CMD(resp, 0, 300, "AT+CIPMUX=1");
}
AT_SEND_CMD(resp, 0, 300, "AT+COPS?");
at_resp_parse_line_args_by_kw(resp, "+COPS:", "+COPS: %*[^\"]\"%[^\"]", &parsed_data);
if (strcmp(parsed_data, "CHINA MOBILE") == 0)
{
/* "CMCC" */
LOG_I("%s", parsed_data);
AT_SEND_CMD(resp, 0, 300, CSTT_CHINA_MOBILE);
}
else if (strcmp(parsed_data, "CHN-UNICOM") == 0)
{
/* "UNICOM" */
LOG_I("%s", parsed_data);
AT_SEND_CMD(resp, 0, 300, CSTT_CHINA_UNICOM);
}
else if (strcmp(parsed_data, "CHN-CT") == 0)
{
AT_SEND_CMD(resp, 0, 300, CSTT_CHINA_TELECOM);
/* "CT" */
LOG_I("%s", parsed_data);
}
/* the device default response timeout is 150 seconds, but it set to 20 seconds is convenient to use. */
AT_SEND_CMD(resp, 0, 20 * 1000, "AT+CIICR");
AT_SEND_CMD(resp, 2, 300, "AT+CIFSR");
if(at_resp_get_line_by_kw(resp, "ERROR") != RT_NULL)
{
LOG_E("Get the local address failed");
result = -RT_ERROR;
goto __exit;
}
__exit:
if (resp)
{
at_delete_resp(resp);
}
if (!result)
{
LOG_I("AT network initialize success!");
rt_mutex_release(at_event_lock);
break;
}
else
{
LOG_E("AT network initialize failed (%d)!", result);
sim800c_power_off();
}
rt_thread_mdelay(1000);
}
/* set network interface device status and address information */
sim800c_netdev_set_info(netdev_get_by_name(SIM800C_NETDEV_NAME));
sim800c_netdev_check_link_status(netdev_get_by_name(SIM800C_NETDEV_NAME));
}
int sim800c_net_init(void)
{
#ifdef PKG_AT_INIT_BY_THREAD
rt_thread_t tid;
tid = rt_thread_create("sim800c_net_init", sim800c_init_thread_entry, RT_NULL, SIM800C_THREAD_STACK_SIZE, SIM800C_THREAD_PRIORITY, 20);
if (tid)
{
rt_thread_startup(tid);
}
else
{
LOG_E("Create AT initialization thread fail!");
}
#else
sim800c_init_thread_entry(RT_NULL);
#endif
return RT_EOK;
}
#ifdef FINSH_USING_MSH
#include <finsh.h>
MSH_CMD_EXPORT_ALIAS(sim800c_net_init, at_net_init, initialize AT network);
#endif
static const struct at_device_ops sim800c_socket_ops = {
sim800c_socket_connect,
sim800c_socket_close,
sim800c_socket_send,
sim800c_domain_resolve,
sim800c_socket_set_event_cb,
};
/* set sim800c network interface device status and address information */
static int sim800c_netdev_set_info(struct netdev *netdev)
{
#define SIM800C_IEMI_RESP_SIZE 32
#define SIM800C_IPADDR_RESP_SIZE 32
#define SIM800C_DNS_RESP_SIZE 96
#define SIM800C_INFO_RESP_TIMO rt_tick_from_millisecond(300)
int result = RT_EOK;
at_response_t resp = RT_NULL;
ip_addr_t addr;
if (netdev == RT_NULL)
{
LOG_E("Input network interface device is NULL.\n");
return -RT_ERROR;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* 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(SIM800C_IEMI_RESP_SIZE, 0, SIM800C_INFO_RESP_TIMO);
if (resp == RT_NULL)
{
LOG_E("SIM800C set IP address failed, no memory for response object.");
result = -RT_ENOMEM;
goto __exit;
}
/* set network interface device hardware address(IEMI) */
{
#define SIM800C_NETDEV_HWADDR_LEN 8
#define SIM800C_IEMI_LEN 15
char iemi[SIM800C_IEMI_LEN] = {0};
int i = 0, j = 0;
/* send "AT+GSN" commond to get device IEMI */
if (at_exec_cmd(resp, "AT+GSN") < 0)
{
result = -RT_ERROR;
goto __exit;
}
if (at_resp_parse_line_args(resp, 2, "%s", iemi) <= 0)
{
LOG_E("Prase \"AT+GSN\" commands resposne data error!");
result = -RT_ERROR;
goto __exit;
}
LOG_D("SIM800C IEMI number: %s", iemi);
netdev->hwaddr_len = SIM800C_NETDEV_HWADDR_LEN;
/* get hardware address by IEMI */
for (i = 0, j = 0; i < SIM800C_NETDEV_HWADDR_LEN && j < SIM800C_IEMI_LEN; i++, j+=2)
{
if (j != SIM800C_IEMI_LEN - 1)
{
netdev->hwaddr[i] = (iemi[j] - '0') * 10 + (iemi[j + 1] - '0');
}
else
{
netdev->hwaddr[i] = (iemi[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, SIM800C_IPADDR_RESP_SIZE, 2, SIM800C_INFO_RESP_TIMO);
/* send "AT+CIFSR" commond to get IP address */
if (at_exec_cmd(resp, "AT+CIFSR") < 0)
{
result = -RT_ERROR;
goto __exit;
}
if (at_resp_parse_line_args_by_kw(resp, ".", "%s", ipaddr) <= 0)
{
LOG_E("Prase \"AT+CIFSR\" commands resposne data error!");
result = -RT_ERROR;
goto __exit;
}
LOG_D("SIM800C IP address: %s", 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, SIM800C_DNS_RESP_SIZE, 0, SIM800C_INFO_RESP_TIMO);
/* send "AT+CDNSCFG?" commond to get DNS servers address */
if (at_exec_cmd(resp, "AT+CDNSCFG?") < 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("Prase \"AT+CDNSCFG?\" commands resposne data error!");
result = -RT_ERROR;
goto __exit;
}
LOG_D("SIM800C primary DNS server address: %s", dns_server1);
LOG_D("SIM800C secondary DNS server address: %s", 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);
}
rt_mutex_release(at_event_lock);
return result;
}
static void check_link_status_entry(void *parameter)
{
#define SIM800C_LINK_STATUS_OK 1
#define SIM800C_LINK_RESP_SIZE 64
#define SIM800C_LINK_RESP_TIMO (3 * RT_TICK_PER_SECOND)
#define SIM800C_LINK_DELAY_TIME (30 * RT_TICK_PER_SECOND)
struct netdev *netdev = (struct netdev *)parameter;
at_response_t resp = RT_NULL;
int result_code, link_status;
resp = at_create_resp(SIM800C_LINK_RESP_SIZE, 0, SIM800C_LINK_RESP_TIMO);
if (resp == RT_NULL)
{
LOG_E("sim800c set check link status failed, no memory for response object.");
return;
}
while (1)
{
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* send "AT+CGREG?" commond to check netweork interface device link status */
if (at_exec_cmd(resp, "AT+CGREG?") < 0)
{
rt_mutex_release(at_event_lock);
rt_thread_mdelay(SIM800C_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 ((SIM800C_LINK_STATUS_OK == link_status) != netdev_is_link_up(netdev))
{
netdev_low_level_set_link_status(netdev, (SIM800C_LINK_STATUS_OK == link_status));
}
rt_mutex_release(at_event_lock);
rt_thread_mdelay(SIM800C_LINK_DELAY_TIME);
}
}
static int sim800c_netdev_check_link_status(struct netdev *netdev)
{
#define SIM800C_LINK_THREAD_STACK_SIZE 512
#define SIM800C_LINK_THREAD_PRIORITY (RT_THREAD_PRIORITY_MAX - 2)
#define SIM800C_LINK_THREAD_TICK 20
rt_thread_t tid;
char tname[RT_NAME_MAX];
if (netdev == RT_NULL)
{
LOG_E("Input network interface device is NULL.\n");
return -RT_ERROR;
}
rt_memset(tname, 0x00, sizeof(tname));
rt_snprintf(tname, RT_NAME_MAX, "%s_link", netdev->name);
tid = rt_thread_create(tname, check_link_status_entry, (void *)netdev,
SIM800C_LINK_THREAD_STACK_SIZE, SIM800C_LINK_THREAD_PRIORITY, SIM800C_LINK_THREAD_TICK);
if (tid)
{
rt_thread_startup(tid);
}
return RT_EOK;
}
static int sim800c_netdev_set_up(struct netdev *netdev)
{
netdev_low_level_set_status(netdev, RT_TRUE);
LOG_D("The network interface device(%s) set up status", netdev->name);
return RT_EOK;
}
static int sim800c_netdev_set_down(struct netdev *netdev)
{
netdev_low_level_set_status(netdev, RT_FALSE);
LOG_D("The network interface device(%s) set down status", netdev->name);
return RT_EOK;
}
static int sim800c_netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, ip_addr_t *dns_server)
{
#define SIM800C_DNS_RESP_LEN 8
#define SIM800C_DNS_RESP_TIMEO rt_tick_from_millisecond(300)
at_response_t resp = RT_NULL;
int result = RT_EOK;
RT_ASSERT(netdev);
RT_ASSERT(dns_server);
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
resp = at_create_resp(SIM800C_DNS_RESP_LEN, 0, SIM800C_DNS_RESP_TIMEO);
if (resp == RT_NULL)
{
LOG_D("sim800c set dns server failed, no memory for response object.");
result = -RT_ENOMEM;
goto __exit;
}
/* send "AT+CDNSCFG=<pri_dns>[,<sec_dns>]" commond to set dns servers */
if (at_exec_cmd(resp, "AT+CDNSCFG=\"%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);
}
rt_mutex_release(at_event_lock);
return result;
}
static int sim800c_netdev_ping(struct netdev *netdev, const char *host, size_t data_len, uint32_t timeout, struct netdev_ping_resp *ping_resp)
{
#define SIM800C_PING_RESP_SIZE 128
#define SIM800C_PING_IP_SIZE 16
#define SIM800C_PING_TIMEO (5 * RT_TICK_PER_SECOND)
#define SIM800C_PING_ERR_TIME 600
#define SIM800C_PING_ERR_TTL 255
int result = RT_EOK;
at_response_t resp = RT_NULL;
char ip_addr[SIM800C_PING_IP_SIZE] = {0};
int response, time, ttl, i;
RT_ASSERT(netdev);
RT_ASSERT(host);
RT_ASSERT(ping_resp);
for (i = 0; i < rt_strlen(host) && !isalpha(host[i]); i++);
if (i < strlen(host))
{
/* check domain name is usable */
if (sim800c_domain_resolve(host, ip_addr) < 0)
{
return -RT_ERROR;
}
rt_memset(ip_addr, 0x00, SIM800C_PING_IP_SIZE);
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
resp = at_create_resp(SIM800C_PING_RESP_SIZE, 0, SIM800C_PING_TIMEO);
if (resp == RT_NULL)
{
LOG_D("sim800c set dns server failed, no memory for response object.");
result = -RT_ERROR;
goto __exit;
}
/* send "AT+CIPPING=<IP addr>[,<retryNum>[,<dataLen>[,<timeout>[,<ttl>]]]]" commond to send ping request */
if (at_exec_cmd(resp, "AT+CIPPING=%s,1,%d,%d,64", host, data_len, SIM800C_PING_TIMEO / (RT_TICK_PER_SECOND / 10)) < 0)
{
result = -RT_ERROR;
goto __exit;
}
if (at_resp_parse_line_args_by_kw(resp, "+CIPPING:", "+CIPPING:%d,\"%[^\"]\",%d,%d",
&response, ip_addr, &time, &ttl) <= 0)
{
LOG_D("Prase \"AT+CIPPING\" commands resposne data error!");
result = -RT_ERROR;
goto __exit;
}
/* the ping request timeout expires, the response time settting to 600 and ttl setting to 255 */
if (time == SIM800C_PING_ERR_TIME && ttl == SIM800C_PING_ERR_TTL)
{
result = -RT_ETIMEOUT;
goto __exit;
}
inet_aton(ip_addr, &(ping_resp->ip_addr));
ping_resp->data_len = data_len;
/* reply time, in units of 100 ms */
ping_resp->ticks = time * 100;
ping_resp->ttl = ttl;
__exit:
if (resp)
{
at_delete_resp(resp);
}
rt_mutex_release(at_event_lock);
return result;
}
void sim800c_netdev_netstat(struct netdev *netdev)
{
// TODO netstat support
}
const struct netdev_ops sim800c_netdev_ops =
{
sim800c_netdev_set_up,
sim800c_netdev_set_down,
RT_NULL, /* not support set ip, netmask, gatway address */
sim800c_netdev_set_dns_server,
RT_NULL, /* not support set DHCP status */
sim800c_netdev_ping,
sim800c_netdev_netstat,
};
static int sim800c_netdev_add(const char *netdev_name)
{
#define SIM800C_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)
{
return -RT_ENOMEM;
}
netdev->mtu = SIM800C_NETDEV_MTU;
netdev->ops = &sim800c_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
return netdev_register(netdev, netdev_name, RT_NULL);
}
static int at_socket_device_init(void)
{
/* create current AT socket event */
at_socket_event = rt_event_create("at_se", RT_IPC_FLAG_FIFO);
if (at_socket_event == RT_NULL)
{
LOG_E("AT client port initialize failed! at_sock_event create failed!");
return -RT_ENOMEM;
}
/* create current AT socket event lock */
at_event_lock = rt_mutex_create("at_se", RT_IPC_FLAG_FIFO);
if (at_event_lock == RT_NULL)
{
LOG_E("AT client port initialize failed! at_sock_lock create failed!");
rt_event_delete(at_socket_event);
return -RT_ENOMEM;
}
/* initialize AT client */
at_client_init(AT_DEVICE_NAME, AT_DEVICE_RECV_BUFF_LEN);
/* register URC data execution function */
at_set_urc_table(urc_table, sizeof(urc_table) / sizeof(urc_table[0]));
/* add network interface device to netdev list */
if (sim800c_netdev_add(SIM800C_NETDEV_NAME) < 0)
{
LOG_E("SIM800C network interface device(%d) add failed.", SIM800C_NETDEV_NAME);
return -RT_ENOMEM;
}
/* initialize sim800c network */
rt_pin_mode(AT_DEVICE_POWER_PIN, PIN_MODE_OUTPUT);
rt_pin_mode(AT_DEVICE_STATUS_PIN, PIN_MODE_INPUT);
sim800c_net_init();
/* set sim800c AT Socket options */
at_socket_device_register(&sim800c_socket_ops);
return RT_EOK;
}
INIT_APP_EXPORT(at_socket_device_init);
#endif /* AT_DEVICE_SIM800C */
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