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at_device/class/esp32/at_device_esp32.c

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/*
* File : at_socket_esp32.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2019-10-26 zylx first version
*/
#include <stdio.h>
#include <string.h>
#include <at_device_esp32.h>
#define LOG_TAG "at.dev.esp32"
#include <at_log.h>
#ifdef AT_DEVICE_USING_ESP32
#define ESP32_WAIT_CONNECT_TIME 5000
#define ESP32_THREAD_STACK_SIZE 2048
#define ESP32_THREAD_PRIORITY (RT_THREAD_PRIORITY_MAX / 2)
/* ============================= esp32 network interface operations ============================= */
static int esp32_netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, ip_addr_t *dns_server);
static void esp32_get_netdev_info(struct rt_work *work, void *work_data)
{
#define AT_ADDR_LEN 32
#define AT_ERR_DNS_SERVER "255.255.255.255"
#define AT_DEF_DNS_SERVER "114.114.114.114"
at_response_t resp = RT_NULL;
char ip[AT_ADDR_LEN] = {0}, mac[AT_ADDR_LEN] = {0};
char gateway[AT_ADDR_LEN] = {0}, netmask[AT_ADDR_LEN] = {0};
char dns_server1[AT_ADDR_LEN] = {0}, dns_server2[AT_ADDR_LEN] = {0};
const char *resp_expr = "%*[^\"]\"%[^\"]\"";
const char *resp_dns = "+CIPDNS:%s";
ip_addr_t ip_addr;
rt_uint32_t mac_addr[6] = {0};
rt_uint32_t num = 0;
rt_uint8_t dhcp_stat = 0;
struct rt_delayed_work *delay_work = (struct rt_delayed_work *)work;
struct at_device *device = (struct at_device *)work_data;
struct netdev *netdev = device->netdev;
struct at_client *client = device->client;
if (delay_work)
{
rt_free(delay_work);
}
resp = at_create_resp(512, 0, rt_tick_from_millisecond(300));
if (resp == RT_NULL)
{
LOG_E("no memory for resp create.");
return;
}
/* send mac addr query commond "AT+CIFSR" and wait response */
if (at_obj_exec_cmd(client, resp, "AT+CIFSR") < 0)
{
goto __exit;
}
if (at_resp_parse_line_args_by_kw(resp, "STAMAC", resp_expr, mac) <= 0)
{
LOG_E("%s device parse \"AT+CIFSR\" cmd error.", device->name);
goto __exit;
}
/* send addr info query commond "AT+CIPSTA?" and wait response */
if (at_obj_exec_cmd(client, resp, "AT+CIPSTA?") < 0)
{
LOG_E("%s device send \"AT+CIPSTA?\" cmd error.", device->name);
goto __exit;
}
if (at_resp_parse_line_args_by_kw(resp, "ip", resp_expr, ip) <= 0 ||
at_resp_parse_line_args_by_kw(resp, "gateway", resp_expr, gateway) <= 0 ||
at_resp_parse_line_args_by_kw(resp, "netmask", resp_expr, netmask) <= 0)
{
LOG_E("%s device prase \"AT+CIPSTA?\" cmd error.", device->name);
goto __exit;
}
/* set netdev info */
inet_aton(gateway, &ip_addr);
netdev_low_level_set_gw(netdev, &ip_addr);
inet_aton(netmask, &ip_addr);
netdev_low_level_set_netmask(netdev, &ip_addr);
inet_aton(ip, &ip_addr);
netdev_low_level_set_ipaddr(netdev, &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?" and wait response */
if (at_obj_exec_cmd(device->client, resp, "AT+CIPDNS?") < 0)
{
LOG_W("please check and update %s device firmware to support the \"AT+CIPDNS?\" cmd.", device->name);
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("%s device prase \"AT+CIPDNS?\" cmd error.", device->name);
goto __exit;
}
/* set primary DNS server address */
if (rt_strlen(dns_server1) > 0 &&
rt_strncmp(dns_server1, AT_ERR_DNS_SERVER, rt_strlen(AT_ERR_DNS_SERVER)) != 0)
{
inet_aton(dns_server1, &ip_addr);
netdev_low_level_set_dns_server(netdev, 0, &ip_addr);
}
else
{
inet_aton(AT_DEF_DNS_SERVER, &ip_addr);
esp32_netdev_set_dns_server(netdev, 0, &ip_addr);
}
/* set secondary DNS server address */
if (rt_strlen(dns_server2) > 0 )
{
inet_aton(dns_server2, &ip_addr);
netdev_low_level_set_dns_server(netdev, 1, &ip_addr);
}
/* send DHCP query commond " AT+CWDHCP_CUR?" and wait response */
if (at_obj_exec_cmd(client, resp, "AT+CWDHCP?") < 0)
{
goto __exit;
}
/* parse response data, get the DHCP status */
if (at_resp_parse_line_args_by_kw(resp, "+CWDHCP:", "+CWDHCP:%d", &dhcp_stat) < 0)
{
LOG_E("%s device prase DHCP status error.", device->name);
goto __exit;
}
/* Bit0 - SoftAP DHCP status, Bit1 - Station DHCP status */
netdev_low_level_set_dhcp_status(netdev, dhcp_stat & 0x01 ? RT_TRUE : RT_FALSE);
__exit:
if (resp)
{
at_delete_resp(resp);
}
}
static int esp32_net_init(struct at_device *device);
static int esp32_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)
{
esp32_net_init(device);
netdev_low_level_set_status(netdev, RT_TRUE);
LOG_D("network interface device(%s) set up status", netdev->name);
}
return RT_EOK;
}
static int esp32_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 by netdev(%s) failed.", netdev->name);
return -RT_ERROR;
}
if (device->is_init == RT_TRUE)
{
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 esp32_netdev_set_addr_info(struct netdev *netdev, ip_addr_t *ip_addr, ip_addr_t *netmask, ip_addr_t *gw)
{
#define IPADDR_RESP_SIZE 128
#define IPADDR_SIZE 16
int result = RT_EOK;
at_response_t resp = RT_NULL;
struct at_device *device = RT_NULL;
char ip_str[IPADDR_SIZE] = {0};
char gw_str[IPADDR_SIZE] = {0};
char netmask_str[IPADDR_SIZE] = {0};
RT_ASSERT(netdev);
RT_ASSERT(ip_addr || netmask || gw);
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(IPADDR_RESP_SIZE, 0, rt_tick_from_millisecond(300));
if (resp == RT_NULL)
{
LOG_E("no memory for resp create.");
result = -RT_ENOMEM;
goto __exit;
}
/* Convert numeric IP address into decimal dotted ASCII representation. */
if (ip_addr)
rt_memcpy(ip_str, inet_ntoa(*ip_addr), IPADDR_SIZE);
else
rt_memcpy(ip_str, inet_ntoa(netdev->ip_addr), IPADDR_SIZE);
if (gw)
rt_memcpy(gw_str, inet_ntoa(*gw), IPADDR_SIZE);
else
rt_memcpy(gw_str, inet_ntoa(netdev->gw), IPADDR_SIZE);
if (netmask)
rt_memcpy(netmask_str, inet_ntoa(*netmask), IPADDR_SIZE);
else
rt_memcpy(netmask_str, inet_ntoa(netdev->netmask), IPADDR_SIZE);
/* send addr info set commond "AT+CIPSTA_CUR=<ip>[,<gateway>,<netmask>]" and wait response */
if (at_obj_exec_cmd(device->client, resp, "AT+CIPSTA_CUR=\"%s\",\"%s\",\"%s\"",
ip_str, gw_str, netmask_str) < 0)
{
LOG_E("%s device set address failed.", device->name);
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("%s device set address success.", device->name);
}
__exit:
if (resp)
{
at_delete_resp(resp);
}
return result;
}
static int esp32_netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, ip_addr_t *dns_server)
{
#define DNS_RESP_SIZE 128
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 by netdev(%s) failed.", netdev->name);
return -RT_ERROR;
}
resp = at_create_resp(DNS_RESP_SIZE, 0, rt_tick_from_millisecond(300));
if (resp == RT_NULL)
{
LOG_E("no memory for resp create.");
return -RT_ENOMEM;
}
/* send dns server set commond "AT+CIPDNS_CUR=<enable>[,<DNS server0>,<DNS server1>]" and wait response */
if (at_obj_exec_cmd(device->client, resp, "AT+CIPDNS_CUR=1,\"%s\"", inet_ntoa(*dns_server)) < 0)
{
LOG_E("%s device set DNS failed.", device->name);
result = -RT_ERROR;
}
else
{
netdev_low_level_set_dns_server(netdev, dns_num, dns_server);
LOG_D("%s device set DNS(%s) success.", device->name, inet_ntoa(*dns_server));
}
if (resp)
{
at_delete_resp(resp);
}
return result;
}
static int esp32_netdev_set_dhcp(struct netdev *netdev, rt_bool_t is_enabled)
{
#define ESP32_STATION 1
#define RESP_SIZE 128
int result = RT_EOK;
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 by netdev(%s) failed.", netdev->name);
return -RT_ERROR;
}
resp = at_create_resp(RESP_SIZE, 0, rt_tick_from_millisecond(300));
if (resp == RT_NULL)
{
LOG_E("no memory for resp struct.");
return -RT_ENOMEM;
}
/* send dhcp set commond "AT+CWDHCP_CUR=<mode>,<en>" and wait response */
if (at_obj_exec_cmd(device->client, resp, "AT+CWDHCP_CUR=%d,%d", ESP32_STATION, is_enabled) < 0)
{
LOG_E("%s device set DHCP status(%d) failed.", device->name, is_enabled);
result = -RT_ERROR;
goto __exit;
}
else
{
netdev_low_level_set_dhcp_status(netdev, is_enabled);
LOG_D("%s device set DHCP status(%d) ok.", device->name, is_enabled);
}
__exit:
if (resp)
{
at_delete_resp(resp);
}
return result;
}
#ifdef NETDEV_USING_PING
static int esp32_netdev_ping(struct netdev *netdev, const char *host,
size_t data_len, uint32_t timeout, struct netdev_ping_resp *ping_resp)
{
#define ESP32_PING_IP_SIZE 16
rt_err_t result = RT_EOK;
at_response_t resp = RT_NULL;
struct at_device *device = RT_NULL;
char ip_addr[ESP32_PING_IP_SIZE] = {0};
int req_time;
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;
}
resp = at_create_resp(64, 0, timeout);
if (resp == RT_NULL)
{
LOG_E("no memory for resp create.");
return -RT_ENOMEM;
}
/* send domain commond "AT+CIPDOMAIN=<domain name>" and wait response */
if (at_obj_exec_cmd(device->client, resp, "AT+CIPDOMAIN=\"%s\"", host) < 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", ip_addr) < 0)
{
result = -RT_ERROR;
goto __exit;
}
/* send ping commond "AT+PING=<IP>" and wait response */
if (at_obj_exec_cmd(device->client, resp, "AT+PING=\"%s\"", host) < 0)
{
result = -RT_ERROR;
goto __exit;
}
if (at_resp_parse_line_args_by_kw(resp, "+", "+PING:%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);
}
return result;
}
#endif /* NETDEV_USING_PING */
#ifdef NETDEV_USING_NETSTAT
void esp32_netdev_netstat(struct netdev *netdev)
{
#define ESP32_NETSTAT_RESP_SIZE 320
#define ESP32_NETSTAT_TYPE_SIZE 4
#define ESP32_NETSTAT_IPADDR_SIZE 17
#define ESP32_NETSTAT_EXPRESSION "+CIPSTATUS:%*d,\"%[^\"]\",\"%[^\"]\",%d,%d,%*d"
at_response_t resp = RT_NULL;
struct at_device *device = RT_NULL;
int remote_port, local_port, i;
char *type = RT_NULL;
char *ipaddr = 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;
}
type = (char *) rt_calloc(1, ESP32_NETSTAT_TYPE_SIZE);
ipaddr = (char *) rt_calloc(1, ESP32_NETSTAT_IPADDR_SIZE);
if ((type && ipaddr) == RT_NULL)
{
LOG_E("no memory for ipaddr create.");
goto __exit;
}
resp = at_create_resp(ESP32_NETSTAT_RESP_SIZE, 0, 5 * RT_TICK_PER_SECOND);
if (resp == RT_NULL)
{
LOG_E("no memory for resp create.", device->name);
goto __exit;
}
/* send network connection information commond "AT+CIPSTATUS" and wait response */
if (at_obj_exec_cmd(device->client, resp, "AT+CIPSTATUS") < 0)
{
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, ESP32_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);
}
}
#endif /* NETDEV_USING_NETSTAT */
static const struct netdev_ops esp32_netdev_ops =
{
esp32_netdev_set_up,
esp32_netdev_set_down,
esp32_netdev_set_addr_info,
esp32_netdev_set_dns_server,
esp32_netdev_set_dhcp,
#ifdef NETDEV_USING_PING
esp32_netdev_ping,
#endif
#ifdef NETDEV_USING_NETSTAT
esp32_netdev_netstat,
#endif
};
static struct netdev *esp32_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)
{
LOG_E("no memory for netdev create.");
return RT_NULL;
}
netdev->mtu = ETHERNET_MTU;
netdev->ops = &esp32_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;
}
/* ============================= esp32 device operations ============================= */
#define AT_SEND_CMD(client, resp, cmd) \
do { \
(resp) = at_resp_set_info((resp), 256, 0, 5 * RT_TICK_PER_SECOND); \
if (at_obj_exec_cmd((client), (resp), (cmd)) < 0) \
{ \
result = -RT_ERROR; \
goto __exit; \
} \
} while(0) \
static void esp32_netdev_start_delay_work(struct at_device *device)
{
struct rt_delayed_work *net_work = RT_NULL;
net_work = (struct rt_delayed_work *)rt_calloc(1, sizeof(struct rt_delayed_work));
if (net_work == RT_NULL)
{
return;
}
rt_delayed_work_init(net_work, esp32_get_netdev_info, (void *)device);
rt_work_submit(&(net_work->work), RT_TICK_PER_SECOND);
}
static void esp32_init_thread_entry(void *parameter)
{
#define INIT_RETRY 5
struct at_device *device = (struct at_device *) parameter;
struct at_device_esp32 *esp32 = (struct at_device_esp32 *) device->user_data;
struct at_client *client = device->client;
at_response_t resp = RT_NULL;
rt_err_t result = RT_EOK;
rt_size_t i = 0, retry_num = INIT_RETRY;
rt_bool_t wifi_is_conn = RT_FALSE;
LOG_D("%s device initialize start.", device->name);
/* wait esp32 device startup finish */
if (at_client_obj_wait_connect(client, ESP32_WAIT_CONNECT_TIME))
{
return;
}
resp = at_create_resp(128, 0, 5 * RT_TICK_PER_SECOND);
if (resp == RT_NULL)
{
LOG_E("no memory for resp create.");
return;
}
while (retry_num--)
{
/* reset module */
AT_SEND_CMD(client, resp, "AT+RST");
/* reset waiting delay */
rt_thread_mdelay(1000);
/* disable echo */
AT_SEND_CMD(client, resp, "ATE0");
/* set current mode to Wi-Fi station */
AT_SEND_CMD(client, resp, "AT+CWMODE=1");
/* get module version */
AT_SEND_CMD(client, 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));
}
AT_SEND_CMD(client, resp, "AT+CIPMUX=1");
/* initialize successfully */
result = RT_EOK;
break;
__exit:
if (result != RT_EOK)
{
rt_thread_mdelay(1000);
LOG_I("%s device initialize retry...", device->name);
}
}
/* connect to WiFi AP */
if (at_obj_exec_cmd(client, at_resp_set_info(resp, 512, 0, 20 * RT_TICK_PER_SECOND),
"AT+CWJAP=\"%s\",\"%s\"", esp32->wifi_ssid, esp32->wifi_password) != RT_EOK)
{
LOG_W("%s device wifi connect failed, check ssid(%s) and password(%s).",
device->name, esp32->wifi_ssid, esp32->wifi_password);
}
else
{
wifi_is_conn = RT_TRUE;
}
if (resp)
{
at_delete_resp(resp);
}
if (result != RT_EOK)
{
netdev_low_level_set_status(device->netdev, RT_FALSE);
LOG_E("%s device network initialize failed(%d).", device->name, result);
}
else
{
device->is_init = RT_TRUE;
netdev_low_level_set_status(device->netdev, RT_TRUE);
if (wifi_is_conn)
{
netdev_low_level_set_link_status(device->netdev, RT_TRUE);
}
esp32_netdev_start_delay_work(device);
LOG_I("%s device network initialize successfully.", device->name);
}
}
static int esp32_net_init(struct at_device *device)
{
#ifdef AT_DEVICE_ESP32_INIT_ASYN
rt_thread_t tid;
tid = rt_thread_create("esp_net", esp32_init_thread_entry, (void *) device,
ESP32_THREAD_STACK_SIZE, ESP32_THREAD_PRIORITY, 20);
if (tid)
{
rt_thread_startup(tid);
}
else
{
LOG_E("create %s device init thread failed.", device->name);
return -RT_ERROR;
}
#else
esp32_init_thread_entry(device);
#endif /* AT_DEVICE_ESP32_INIT_ASYN */
return RT_EOK;
}
static void urc_busy_p_func(struct at_client *client, const char *data, rt_size_t size)
{
LOG_D("system is processing a commands...");
}
static void urc_busy_s_func(struct at_client *client, const char *data, rt_size_t size)
{
LOG_D("system is sending data...");
}
static void urc_func(struct at_client *client, const char *data, rt_size_t size)
{
struct at_device *device = RT_NULL;
char *client_name = client->device->parent.name;
RT_ASSERT(client && 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 (rt_strstr(data, "WIFI CONNECTED"))
{
LOG_I("%s device wifi is connected.", device->name);
if (device->is_init)
{
netdev_low_level_set_link_status(device->netdev, RT_TRUE);
esp32_netdev_start_delay_work(device);
}
}
else if (rt_strstr(data, "WIFI DISCONNECT"))
{
LOG_I("%s device wifi is disconnect.", device->name);
if (device->is_init)
{
netdev_low_level_set_link_status(device->netdev, RT_FALSE);
}
}
}
static const struct at_urc urc_table[] =
{
{"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},
};
static int esp32_init(struct at_device *device)
{
struct at_device_esp32 *esp32 = (struct at_device_esp32 *) device->user_data;
/* initialize AT client */
at_client_init(esp32->client_name, esp32->recv_line_num);
device->client = at_client_get(esp32->client_name);
if (device->client == RT_NULL)
{
LOG_E("get AT client(%s) failed.", esp32->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
esp32_socket_init(device);
#endif
/* add esp32 device to the netdev list */
device->netdev = esp32_netdev_add(esp32->device_name);
if (device->netdev == RT_NULL)
{
LOG_E("add netdev(%s) failed.", esp32->device_name);
return -RT_ERROR;
}
/* initialize esp32 device network */
return esp32_netdev_set_up(device->netdev);
}
static int esp32_deinit(struct at_device *device)
{
return esp32_netdev_set_down(device->netdev);
}
/* reset eap8266 device and initialize device network again */
static int esp32_reset(struct at_device *device)
{
int result = RT_EOK;
struct at_client *client = device->client;
/* send "AT+RST" commonds to esp32 device */
result = at_obj_exec_cmd(client, RT_NULL, "AT+RST");
rt_thread_mdelay(1000);
/* waiting 10 seconds for esp32 device reset */
device->is_init = RT_FALSE;
if (at_client_obj_wait_connect(client, ESP32_WAIT_CONNECT_TIME))
{
return -RT_ETIMEOUT;
}
/* initialize esp32 device network */
esp32_net_init(device);
device->is_init = RT_TRUE;
return result;
}
/* change eap8266 wifi ssid and password information */
static int esp32_wifi_info_set(struct at_device *device, struct at_device_ssid_pwd *info)
{
int result = RT_EOK;
struct at_response *resp = RT_NULL;
if (info->ssid == RT_NULL || info->password == RT_NULL)
{
LOG_E("input wifi ssid(%s) and password(%s) error.", info->ssid, info->password);
return -RT_ERROR;
}
resp = at_create_resp(128, 0, 20 * RT_TICK_PER_SECOND);
if (resp == RT_NULL)
{
LOG_E("no memory for resp create.");
return -RT_ENOMEM;
}
/* connect to input wifi ap */
if (at_obj_exec_cmd(device->client, resp, "AT+CWJAP=\"%s\",\"%s\"", info->ssid, info->password) != RT_EOK)
{
LOG_E("%s device wifi connect failed, check ssid(%s) and password(%s).",
device->name, info->ssid, info->password);
result = -RT_ERROR;
}
if (resp)
{
at_delete_resp(resp);
}
return result;
}
static int esp32_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_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_GET_SIGNAL:
case AT_DEVICE_CTRL_GET_GPS:
case AT_DEVICE_CTRL_GET_VER:
LOG_W("not support the control cmd(%d).", cmd);
break;
case AT_DEVICE_CTRL_RESET:
result = esp32_reset(device);
break;
case AT_DEVICE_CTRL_SET_WIFI_INFO:
result = esp32_wifi_info_set(device, (struct at_device_ssid_pwd *) arg);
break;
default:
LOG_E("input error control cmd(%d).", cmd);
break;
}
return result;
}
static const struct at_device_ops esp32_device_ops =
{
esp32_init,
esp32_deinit,
esp32_control,
};
static int esp32_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 class create.");
return -RT_ENOMEM;
}
/* fill ESP32 device class object */
#ifdef AT_USING_SOCKET
esp32_socket_class_register(class);
#endif
class->device_ops = &esp32_device_ops;
return at_device_class_register(class, AT_DEVICE_CLASS_ESP32);
}
INIT_DEVICE_EXPORT(esp32_device_class_register);
#endif /* AT_DEVICE_USING_ESP32 */
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