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at_device/at_socket_esp8266.c

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/*
* File : at_socket_esp8266.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
* 2018-06-20 chenyong first version
*/
#include <stdio.h>
#include <string.h>
#include <rtthread.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.esp8266"
#include <at_log.h>
#ifdef AT_DEVICE_ESP8266
#define ESP8266_MODULE_SEND_MAX_SIZE 2048
#define ESP8266_WAIT_CONNECT_TIME 5000
#define ESP8266_THREAD_STACK_SIZE 1024
#define ESP8266_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 ESP8266_EVENT_CONN_OK (1L << 0)
#define ESP8266_EVENT_SEND_OK (1L << 1)
#define ESP8266_EVENT_RECV_OK (1L << 2)
#define ESP8266_EVNET_CLOSE_OK (1L << 3)
#define ESP8266_EVENT_CONN_FAIL (1L << 4)
#define ESP8266_EVENT_SEND_FAIL (1L << 5)
#define ESP8266_NETDEV_NAME "esp8266"
static int cur_socket;
static int cur_send_bfsz;
static struct rt_delayed_work esp8266_net_work;
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 esp8266_socket_close(int socket)
{
at_response_t resp = RT_NULL;
int result = RT_EOK;
resp = at_create_resp(64, 0, rt_tick_from_millisecond(5000));
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
if (at_exec_cmd(resp, "AT+CIPCLOSE=%d", socket) < 0)
{
result = -RT_ERROR;
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 esp8266_socket_connect(int socket, char *ip, int32_t port, enum at_socket_type type, rt_bool_t is_client)
{
at_response_t resp = RT_NULL;
int result = RT_EOK;
rt_bool_t retryed = RT_FALSE;
RT_ASSERT(ip);
RT_ASSERT(port >= 0);
resp = at_create_resp(128, 0, rt_tick_from_millisecond(5000));
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
__retry:
if (is_client)
{
switch (type)
{
case AT_SOCKET_TCP:
/* send AT commands to connect TCP server */
if (at_exec_cmd(resp, "AT+CIPSTART=%d,\"TCP\",\"%s\",%d,60", socket, ip, port) < 0)
{
result = -RT_ERROR;
}
break;
case AT_SOCKET_UDP:
if (at_exec_cmd(resp, "AT+CIPSTART=%d,\"UDP\",\"%s\",%d", socket, ip, port) < 0)
{
result = -RT_ERROR;
}
break;
default:
LOG_E("Not supported connect type : %d.", type);
result = -RT_ERROR;
goto __exit;
}
}
if (result != RT_EOK && !retryed)
{
LOG_D("socket (%d) connect failed, maybe the socket was not be closed at the last time and now will retry.", socket);
if (esp8266_socket_close(socket) < 0)
{
goto __exit;
}
retryed = RT_TRUE;
result = RT_EOK;
goto __retry;
}
__exit:
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 esp8266_socket_send(int socket, const char *buff, size_t bfsz, enum at_socket_type type)
{
int result = RT_EOK;
int event_result = 0;
at_response_t resp = RT_NULL;
size_t cur_pkt_size = 0, sent_size = 0;
RT_ASSERT(buff);
RT_ASSERT(bfsz > 0);
resp = at_create_resp(128, 2, rt_tick_from_millisecond(5000));
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* 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 < ESP8266_MODULE_SEND_MAX_SIZE)
{
cur_pkt_size = bfsz - sent_size;
}
else
{
cur_pkt_size = ESP8266_MODULE_SEND_MAX_SIZE;
}
/* send the "AT+CIPSEND" 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), rt_tick_from_millisecond(5 * 1000), 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(ESP8266_EVENT_SEND_OK | ESP8266_EVENT_SEND_FAIL, rt_tick_from_millisecond(5 * 1000),
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 & ESP8266_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 */
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
* -2: wait socket event timeout
* -5: no memory
*/
static int esp8266_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);
resp = at_create_resp(128, 0, rt_tick_from_millisecond(20000));
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++)
{
if (at_exec_cmd(resp, "AT+CIPDOMAIN=\"%s\"", name) < 0)
{
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, "+CIPDOMAIN:", "+CIPDOMAIN:%s", recv_ip) < 0)
{
rt_thread_delay(rt_tick_from_millisecond(100));
/* resolve failed, maybe receive an URC CRLF */
continue;
}
if (strlen(recv_ip) < 8)
{
rt_thread_delay(rt_tick_from_millisecond(100));
/* resolve failed, maybe receive an URC CRLF */
continue;
}
else
{
strncpy(ip, recv_ip, 15);
ip[15] = '\0';
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 esp8266_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_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, ESP8266_EVENT_SEND_OK));
}
else if (strstr(data, "SEND FAIL"))
{
at_socket_event_send(SET_EVENT(cur_socket, ESP8266_EVENT_SEND_FAIL));
}
}
static void urc_send_bfsz_func(const char *data, rt_size_t size)
{
int send_bfsz = 0;
RT_ASSERT(data && size);
sscanf(data, "Recv %d bytes", &send_bfsz);
cur_send_bfsz = send_bfsz;
}
static void urc_close_func(const char *data, rt_size_t size)
{
int socket = 0;
RT_ASSERT(data && size);
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, RT_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, "+IPD,%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_busy_p_func(const char *data, rt_size_t size)
{
RT_ASSERT(data && size);
LOG_D("system is processing a commands and it cannot respond to the current commands.");
}
static void urc_busy_s_func(const char *data, rt_size_t size)
{
RT_ASSERT(data && size);
LOG_D("system is sending data and it cannot respond to the current commands.");
}
static void urc_func(const char *data, rt_size_t size)
{
RT_ASSERT(data && size);
if (strstr(data, "WIFI CONNECTED"))
{
netdev_low_level_set_link_status(netdev_get_by_name(ESP8266_NETDEV_NAME), RT_TRUE);
rt_work_submit(&(esp8266_net_work.work), RT_TICK_PER_SECOND);
LOG_I("ESP8266 WIFI is connected.");
}
else if (strstr(data, "WIFI DISCONNECT"))
{
netdev_low_level_set_link_status(netdev_get_by_name(ESP8266_NETDEV_NAME), RT_FALSE);
LOG_I("ESP8266 WIFI is disconnect.");
}
}
static struct at_urc urc_table[] = {
{"SEND OK", "\r\n", urc_send_func},
{"SEND FAIL", "\r\n", urc_send_func},
{"Recv", "bytes\r\n", urc_send_bfsz_func},
{"", ",CLOSED\r\n", urc_close_func},
{"+IPD", ":", urc_recv_func},
{"busy p", "\r\n", urc_busy_p_func},
{"busy s", "\r\n", urc_busy_s_func},
{"WIFI CONNECTED", "\r\n", urc_func},
{"WIFI DISCONNECT", "\r\n", urc_func},
};
#define AT_SEND_CMD(resp, cmd) \
do \
{ \
if (at_exec_cmd(at_resp_set_info(resp, 256, 0, rt_tick_from_millisecond(5000)), cmd) < 0) \
{ \
LOG_E("RT AT send commands(%s) error!", cmd); \
result = -RT_ERROR; \
goto __exit; \
} \
} while(0); \
static void exp8266_get_netdev_info(struct rt_work *work, void *work_data)
{
#define AT_ADDR_LEN 32
at_response_t resp = RT_NULL;
char ip[AT_ADDR_LEN], mac[AT_ADDR_LEN];
char gateway[AT_ADDR_LEN], netmask[AT_ADDR_LEN];
char dns_server1[AT_ADDR_LEN] = {0}, dns_server2[AT_ADDR_LEN] = {0};
const char *resp_expr = "%*[^\"]\"%[^\"]\"";
const char *resp_dns = "+CIPDNS_CUR:%s";
ip_addr_t sal_ip_addr;
rt_uint32_t mac_addr[6] = {0};
rt_uint32_t num = 0;
rt_uint8_t dhcp_stat = 0;
struct netdev *netdev = RT_NULL;
netdev = (struct netdev *)work_data;
rt_memset(ip, 0x00, sizeof(ip));
rt_memset(mac, 0x00, sizeof(mac));
rt_memset(gateway, 0x00, sizeof(gateway));
rt_memset(netmask, 0x00, sizeof(netmask));
resp = at_create_resp(512, 0, rt_tick_from_millisecond(300));
if (!resp)
{
LOG_E("No memory for response structure!");
return;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* send mac addr query commond "AT+CIFSR" and wait response */
if (at_exec_cmd(resp, "AT+CIFSR") < 0)
{
LOG_E("AT send \"AT+CIFSR\" commands error!");
goto __exit;
}
if (at_resp_parse_line_args(resp, 2, resp_expr, mac) <= 0)
{
LOG_E("Parse error, current line buff : %s", at_resp_get_line(resp, 2));
goto __exit;
}
/* send addr info query commond "AT+CIPSTA?" and wait response */
if (at_exec_cmd(resp, "AT+CIPSTA?") < 0)
{
LOG_E("AT send \"AT+CIPSTA?\" commands error!");
goto __exit;
}
if (at_resp_parse_line_args(resp, 1, resp_expr, ip) <= 0 ||
at_resp_parse_line_args(resp, 2, resp_expr, gateway) <= 0 ||
at_resp_parse_line_args(resp, 3, resp_expr, netmask) <= 0)
{
LOG_E("Prase \"AT+CIPSTA?\" commands resposne data error!");
goto __exit;
}
/* set netdev info */
inet_aton(ip, &sal_ip_addr);
netdev_low_level_set_ipaddr(netdev, &sal_ip_addr);
inet_aton(gateway, &sal_ip_addr);
netdev_low_level_set_gw(netdev, &sal_ip_addr);
inet_aton(netmask, &sal_ip_addr);
netdev_low_level_set_netmask(netdev, &sal_ip_addr);
sscanf(mac, "%x:%x:%x:%x:%x:%x", &mac_addr[0], &mac_addr[1], &mac_addr[2], &mac_addr[3], &mac_addr[4], &mac_addr[5]);
for (num = 0; num < netdev->hwaddr_len; num++)
{
netdev->hwaddr[num] = mac_addr[num];
}
/* send dns server query commond "AT+CIPDNS_CUR?" and wait response */
if (at_exec_cmd(resp, "AT+CIPDNS_CUR?") < 0)
{
LOG_W("Get dns server failed! Please check and update your firmware to support the \"AT+CIPDNS_CUR?\" command.");
goto __exit;
}
if (at_resp_parse_line_args(resp, 1, resp_dns, dns_server1) <= 0 &&
at_resp_parse_line_args(resp, 2, resp_dns, dns_server2) <= 0)
{
LOG_E("Prase \"AT+CIPDNS_CUR?\" commands resposne data error!");
goto __exit;
}
if (strlen(dns_server1) > 0)
{
inet_aton(dns_server1, &sal_ip_addr);
netdev_low_level_set_dns_server(netdev, 0, &sal_ip_addr);
}
if (strlen(dns_server2) > 0)
{
inet_aton(dns_server2, &sal_ip_addr);
netdev_low_level_set_dns_server(netdev, 1, &sal_ip_addr);
}
/* send DHCP query commond " AT+CWDHCP_CUR?" and wait response */
if (at_exec_cmd(resp, "AT+CWDHCP_CUR?") < 0)
{
LOG_E("AT send \"AT+CWDHCP_CUR?\" commands error!");
goto __exit;
}
/* parse response data, get the DHCP status */
if (at_resp_parse_line_args_by_kw(resp, "+CWDHCP_CUR:", "+CWDHCP_CUR:%d", &dhcp_stat) < 0)
{
LOG_E("get DHCP status failed!");
goto __exit;
}
/* Bit0 - SoftAP DHCP status, Bit1 - Station DHCP status */
if (dhcp_stat & 0x02)
{
netdev_low_level_set_dhcp_status(netdev, RT_TRUE);
}
else
{
netdev_low_level_set_dhcp_status(netdev, RT_FALSE);
}
__exit:
rt_mutex_release(at_event_lock);
if (resp)
{
at_delete_resp(resp);
}
}
static void esp8266_init_thread_entry(void *parameter)
{
at_response_t resp = RT_NULL;
rt_err_t result = RT_EOK;
rt_size_t i;
resp = at_create_resp(128, 0, rt_tick_from_millisecond(5000));
if (!resp)
{
LOG_E("No memory for response structure!");
result = -RT_ENOMEM;
goto __exit;
}
rt_thread_delay(rt_tick_from_millisecond(5000));
/* reset module */
AT_SEND_CMD(resp, "AT+RST");
/* reset waiting delay */
rt_thread_delay(rt_tick_from_millisecond(1000));
/* disable echo */
AT_SEND_CMD(resp, "ATE0");
/* set current mode to Wi-Fi station */
AT_SEND_CMD(resp, "AT+CWMODE=1");
/* get module version */
AT_SEND_CMD(resp, "AT+GMR");
/* show module version */
for (i = 0; i < resp->line_counts - 1; i++)
{
LOG_D("%s", at_resp_get_line(resp, i + 1));
}
/* connect to WiFi AP */
if (at_exec_cmd(at_resp_set_info(resp, 128, 0, 20 * RT_TICK_PER_SECOND), "AT+CWJAP=\"%s\",\"%s\"",
AT_DEVICE_WIFI_SSID, AT_DEVICE_WIFI_PASSWORD) != RT_EOK)
{
LOG_E("AT network initialize failed, check ssid(%s) and password(%s).", AT_DEVICE_WIFI_SSID, AT_DEVICE_WIFI_PASSWORD);
result = -RT_ERROR;
goto __exit;
}
AT_SEND_CMD(resp, "AT+CIPMUX=1");
__exit:
if (resp)
{
at_delete_resp(resp);
}
if (!result)
{
netdev_low_level_set_status(netdev_get_by_name(ESP8266_NETDEV_NAME), RT_TRUE);
LOG_I("AT network initialize success!");
}
else
{
netdev_low_level_set_status(netdev_get_by_name(ESP8266_NETDEV_NAME), RT_FALSE);
LOG_E("AT network initialize failed (%d)!", result);
}
}
int esp8266_net_init(void)
{
#ifdef PKG_AT_INIT_BY_THREAD
rt_thread_t tid;
tid = rt_thread_create("esp8266_net_init", esp8266_init_thread_entry, RT_NULL, ESP8266_THREAD_STACK_SIZE, ESP8266_THREAD_PRIORITY, 20);
if (tid)
{
rt_thread_startup(tid);
}
else
{
LOG_E("Create AT initialization thread fail!");
}
#else
esp8266_init_thread_entry(RT_NULL);
#endif
return RT_EOK;
}
#ifdef FINSH_USING_MSH
#include <finsh.h>
MSH_CMD_EXPORT_ALIAS(esp8266_net_init, at_net_init, initialize AT network);
#endif
static const struct at_device_ops esp8266_socket_ops =
{
esp8266_socket_connect,
esp8266_socket_close,
esp8266_socket_send,
esp8266_domain_resolve,
esp8266_socket_set_event_cb,
};
static int esp8266_netdev_set_up(struct netdev *netdev)
{
netdev_low_level_set_status(netdev, RT_TRUE);
LOG_D("esp8266 network interface set up status.");
return RT_EOK;
}
static int esp8266_netdev_set_down(struct netdev *netdev)
{
netdev_low_level_set_status(netdev, RT_FALSE);
LOG_D("esp8266 network interface set down status.");
return RT_EOK;
}
static int esp8266_netdev_set_addr_info(struct netdev *netdev, ip_addr_t *ip_addr, ip_addr_t *netmask, ip_addr_t *gw)
{
#define RESP_SIZE 128
#define IPV4_ADDR_STRLEN_MAX 16
at_response_t resp = RT_NULL;
int result = RT_EOK;
char esp8266_ip_addr[IPV4_ADDR_STRLEN_MAX] = {0};
char esp8266_gw_addr[IPV4_ADDR_STRLEN_MAX] = {0};
char esp8266_netmask_addr[IPV4_ADDR_STRLEN_MAX] = {0};
RT_ASSERT(netdev);
RT_ASSERT(ip_addr || netmask || gw);
resp = at_create_resp(RESP_SIZE, 0, rt_tick_from_millisecond(300));
if (!resp)
{
LOG_E("No memory for response structure!");
result = -RT_ENOMEM;
goto __exit;
}
/* Convert numeric IP address into decimal dotted ASCII representation. */
if (ip_addr)
rt_memcpy(esp8266_ip_addr, inet_ntoa(*ip_addr), IPV4_ADDR_STRLEN_MAX);
else
rt_memcpy(esp8266_ip_addr, inet_ntoa(netdev->ip_addr), IPV4_ADDR_STRLEN_MAX);
if (gw)
rt_memcpy(esp8266_gw_addr, inet_ntoa(*gw), IPV4_ADDR_STRLEN_MAX);
else
rt_memcpy(esp8266_gw_addr, inet_ntoa(netdev->gw), IPV4_ADDR_STRLEN_MAX);
if (netmask)
rt_memcpy(esp8266_netmask_addr, inet_ntoa(*netmask), IPV4_ADDR_STRLEN_MAX);
else
rt_memcpy(esp8266_netmask_addr, inet_ntoa(netdev->netmask), IPV4_ADDR_STRLEN_MAX);
/* send addr info set commond "AT+CIPSTA_CUR=<ip>[,<gateway>,<netmask>]" and wait response */
if (at_exec_cmd(resp, "AT+CIPSTA_CUR=\"%s\",\"%s\",\"%s\"", esp8266_ip_addr, esp8266_gw_addr, esp8266_netmask_addr) < 0)
{
LOG_D("esp8266 set addr info failed.");
result = -RT_ERROR;
}
else
{
/* Update netdev information */
if (ip_addr)
netdev_low_level_set_ipaddr(netdev, ip_addr);
if (gw)
netdev_low_level_set_gw(netdev, gw);
if (netmask)
netdev_low_level_set_netmask(netdev, netmask);
LOG_D("esp8266 set addr info successfully.");
}
__exit:
if (resp)
{
at_delete_resp(resp);
}
return result;
}
static int esp8266_netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, ip_addr_t *dns_server)
{
#define RESP_SIZE 128
at_response_t resp = RT_NULL;
int result = RT_EOK;
RT_ASSERT(netdev);
RT_ASSERT(dns_server);
resp = at_create_resp(RESP_SIZE, 0, rt_tick_from_millisecond(300));
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* send dns server set commond "AT+CIPDNS_CUR=<enable>[,<DNS server0>,<DNS server1>]" and wait response */
if (at_exec_cmd(resp, "AT+CIPDNS_CUR=1,\"%s\"", inet_ntoa(*dns_server)) < 0)
{
LOG_E("set dns server(%s) failed", inet_ntoa(*dns_server));
result = -RT_ERROR;
}
else
{
netdev_low_level_set_dns_server(netdev, dns_num, dns_server);
LOG_D("esp8266 set dns server successfully.");
}
if (resp)
{
at_delete_resp(resp);
}
rt_mutex_release(at_event_lock);
return result;
}
static int esp8266_netdev_set_dhcp(struct netdev *netdev, rt_bool_t is_enabled)
{
#define ESP8266_STATION 1
#define RESP_SIZE 128
at_response_t resp = RT_NULL;
int result = RT_EOK;
RT_ASSERT(netdev);
resp = at_create_resp(RESP_SIZE, 0, rt_tick_from_millisecond(300));
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* send dhcp set commond "AT+CWDHCP_CUR=<mode>,<en>" and wait response */
if (at_exec_cmd(resp, "AT+CWDHCP_CUR=%d,%d", ESP8266_STATION, is_enabled) < 0)
{
LOG_E("set dhcp status(%d) failed", is_enabled);
result = -RT_ERROR;
goto __exit;
}
else
{
netdev_low_level_set_dhcp_status(netdev, is_enabled);
LOG_D("esp8266 set dhcp successfully.");
}
__exit:
if (resp)
{
at_delete_resp(resp);
}
rt_mutex_release(at_event_lock);
return result;
}
static int esp8266_netdev_ping(struct netdev *netdev, const char *host, size_t data_len, uint32_t timeout, struct netdev_ping_resp *ping_resp)
{
#define ESP8266_PING_IP_SIZE 16
at_response_t resp = RT_NULL;
rt_err_t result = RT_EOK;
int req_time;
char ip_addr[ESP8266_PING_IP_SIZE] = {0};
RT_ASSERT(netdev);
RT_ASSERT(host);
RT_ASSERT(ping_resp);
resp = at_create_resp(64, 0, timeout);
if (!resp)
{
LOG_E("No memory for response structure!");
return -RT_ENOMEM;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* send domain commond "AT+CIPDOMAIN=<domain name>" and wait response */
if (at_exec_cmd(resp, "AT+CIPDOMAIN=\"%s\"", host) < 0)
{
LOG_D("ping: send commond AT+CIPDOMAIN=<domain name> failed");
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, "+CIPDOMAIN:", "+CIPDOMAIN:%s", ip_addr) < 0)
{
LOG_E("ping: get the IP address failed");
result = -RT_ERROR;
goto __exit;
}
/* send ping commond "AT+PING=<IP>" and wait response */
if (at_exec_cmd(resp, "AT+PING=\"%s\"", host) < 0)
{
LOG_D("ping: unknown remote server host");
result = -RT_ERROR;
goto __exit;
}
if (at_resp_parse_line_args_by_kw(resp, "+", "+%d", &req_time) < 0)
{
result = -RT_ERROR;
goto __exit;
}
if (req_time)
{
inet_aton(ip_addr, &(ping_resp->ip_addr));
ping_resp->data_len = data_len;
ping_resp->ttl = 0;
ping_resp->ticks = req_time;
}
__exit:
if (resp)
{
at_delete_resp(resp);
}
rt_mutex_release(at_event_lock);
return result;
}
void esp8266_netdev_netstat(struct netdev *netdev)
{
#define ESP8266_NETSTAT_RESP_SIZE 320
#define ESP8266_NETSTAT_TYPE_SIZE 4
#define ESP8266_NETSTAT_IPADDR_SIZE 17
#define ESP8266_NETSTAT_EXPRESSION "+CIPSTATUS:%*d,\"%[^\"]\",\"%[^\"]\",%d,%d,%*d"
at_response_t resp = RT_NULL;
int remote_port, local_port, i;
char *type = RT_NULL;
char *ipaddr = RT_NULL;
type = rt_calloc(1, ESP8266_NETSTAT_TYPE_SIZE);
ipaddr = rt_calloc(1, ESP8266_NETSTAT_IPADDR_SIZE);
if ((type && ipaddr) == RT_NULL)
{
LOG_E("No memory for response structure!");
goto __exit;
}
resp = at_create_resp(ESP8266_NETSTAT_RESP_SIZE, 0, rt_tick_from_millisecond(5000));
if (!resp)
{
LOG_E("No memory for response structure!");
goto __exit;
}
rt_mutex_take(at_event_lock, RT_WAITING_FOREVER);
/* send network connection information commond "AT+CIPSTATUS" and wait response */
if (at_exec_cmd(resp, "AT+CIPSTATUS") < 0)
{
LOG_E("netstat: send commond AT+CIPSTATUS failed");
goto __exit;
}
for (i = 1; i <= resp->line_counts; i++)
{
if (strstr(at_resp_get_line(resp, i), "+CIPSTATUS"))
{
/* parse the third line of response data, get the network connection information */
if (at_resp_parse_line_args(resp, i, ESP8266_NETSTAT_EXPRESSION, type, ipaddr, &remote_port, &local_port) < 0)
goto __exit;
else
{
LOG_RAW("%s: %s:%d ==> %s:%d\n", type, inet_ntoa(netdev->ip_addr), local_port, ipaddr, remote_port);
}
}
}
__exit:
if (resp)
{
at_delete_resp(resp);
}
if (type)
{
rt_free(type);
}
if (ipaddr)
{
rt_free(ipaddr);
}
rt_mutex_release(at_event_lock);
}
const struct netdev_ops esp8266_netdev_ops =
{
esp8266_netdev_set_up,
esp8266_netdev_set_down,
esp8266_netdev_set_addr_info,
esp8266_netdev_set_dns_server,
esp8266_netdev_set_dhcp,
esp8266_netdev_ping,
esp8266_netdev_netstat,
};
static struct netdev *esp8266_netdev_add(const char *netdev_name)
{
#define ETHERNET_MTU 1500
#define HWADDR_LEN 6
struct netdev *netdev = RT_NULL;
RT_ASSERT(netdev_name);
netdev = (struct netdev *) rt_calloc(1, sizeof(struct netdev));
if (netdev == RT_NULL)
{
return RT_NULL;
}
netdev->mtu = ETHERNET_MTU;
netdev->ops = &esp8266_netdev_ops;
netdev->hwaddr_len = HWADDR_LEN;
#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;
}
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("RT 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("RT 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 esp8266 to the netdev list */
esp8266_netdev_add(ESP8266_NETDEV_NAME);
/* initialize esp8266 net workqueue */
rt_delayed_work_init(&esp8266_net_work, exp8266_get_netdev_info, (void *)netdev_get_by_name(ESP8266_NETDEV_NAME));
/* initialize esp8266 network */
esp8266_net_init();
/* set esp8266 AT Socket options */
at_socket_device_register(&esp8266_socket_ops);
return RT_EOK;
}
INIT_APP_EXPORT(at_socket_device_init);
#endif /* AT_DEVICE_ESP8266 */
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