ESP8266 UDP通信

#include "driver/uart.h"

#include "espconn.h"

void ICACHE_FLASH_ATTR

user_rf_pre_init(void){}

struct espconn user_udp_espconn;

ETSTimer connect_timer;

ETSTimer test_timer;

//udp发送函数

void ICACHE_FLASH_ATTR user_udp_send(void *data)

{

    char yladdr[6] = {0};

    char DeviceBuffer[40] = {0};//将获取的MAC地址格式化输出到一个buffer里面

	os_printf("正在发送...\r\n");

    wifi_get_macaddr(STATION_IF, yladdr);//查询MAC地址

    os_sprintf(DeviceBuffer,"设备地址为："MACSTR"\r\n", MAC2STR(yladdr));//格式化MAC地址

    espconn_sent(&user_udp_espconn, DeviceBuffer, os_strlen(DeviceBuffer));

}

//udp发送回调

void ICACHE_FLASH_ATTR user_udp_sent_cb(void *arg)

{

	os_timer_disarm(&test_timer);

	os_timer_setfn(&test_timer, user_udp_send, NULL);

	os_timer_arm(&test_timer, 1000, 0);//1秒钟发送一次

}

//udp接收回调

void ICACHE_FLASH_ATTR user_udp_recv_cb(void *arg,

        char *pdata,

        unsigned short len)

{

	os_printf("UDP已经接收数据：%s", pdata);

}

//创建UDP连接

void ICACHE_FLASH_ATTR wifi_conned(void *arg)

{

	uint8 status = 0;

	static uint8 count = 0;

	count++;

	os_timer_disarm(&connect_timer);

	status = wifi_station_get_connect_status();

	if(status == STATION_GOT_IP)

	{

		wifi_set_broadcast_if(STATIONAP_MODE); //设置UDP广播的发送接口

		user_udp_espconn.type = ESPCONN_UDP;

		user_udp_espconn.proto.udp = (esp_udp*)os_zalloc(sizeof(esp_udp));

		user_udp_espconn.proto.udp->local_port = 2525;

		user_udp_espconn.proto.udp->remote_port = 1112;

		const char udp_remote_ip[] = {255,255,255,255}; //用于存放远程IP地址

		os_memcpy(&user_udp_espconn.proto.udp->remote_ip, udp_remote_ip, sizeof(udp_remote_ip));

		espconn_regist_recvcb(&user_udp_espconn, user_udp_recv_cb); //接收回调函数

		espconn_regist_sentcb(&user_udp_espconn, user_udp_sent_cb); //发送回调函数

		espconn_create(&user_udp_espconn); //创建UDP连接

		user_udp_send(NULL);

		return;

	}

	else

	{

		if(count >= 7)

		{

			os_printf("wifi连接失败！");

        	return;

        }

	}

	os_timer_arm(&connect_timer, 2000, 0);

}

//加入当前可用wiff

void ICACHE_FLASH_ATTR scan_done(void *arg, STATUS status)

{

	char ssid[] = "Feixun_1003";

	char password[] = "12345678";

	struct station_config stationConf = {0};

	if (status == OK)

	{

		os_memcpy(&stationConf.ssid, ssid, os_strlen(ssid)); //加入当前可用wiff

		os_memcpy(&stationConf.password, password, os_strlen(password));	//密码

		wifi_station_set_config_current(&stationConf);

		wifi_station_connect();

		os_timer_setfn(&connect_timer, wifi_conned, NULL);

		os_timer_arm(&connect_timer, 2000, 0);

	}

}

void to_scan(void)

{

	wifi_station_scan(NULL, scan_done);

	return;

}

//配置ESP8266

void user_init()

{

	struct softap_config config = {0};

	char ssid[] = "ESP8266";

	char password[] = "12345678";

	uart_init(BIT_RATE_115200, BIT_RATE_115200);

	os_delay_us(60000);

	wifi_set_opmode(STATIONAP_MODE);

	wifi_softap_get_config(&config);

	config.ssid_len = os_strlen(ssid);

	os_memset(config.ssid, 0, sizeof(config.ssid));

	os_memcpy(config.ssid, ssid, config.ssid_len);

	os_memset(config.password, 0, sizeof(config.password));

	os_memcpy(config.password, password, os_strlen(password));

	wifi_softap_set_config(&config);

	system_init_done_cb(to_scan);

	return;

}
巴特西

ESP8266 UDP通信

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