137 lines
No EOL
3.4 KiB
C
137 lines
No EOL
3.4 KiB
C
|
|
|
|
/*
|
|
TCP_send example
|
|
this example will creat a TCP connect,
|
|
and send data constantly.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "freertos/event_groups.h"
|
|
#include "esp_wifi.h"
|
|
#include "esp_event_loop.h"
|
|
#include "esp_system.h"
|
|
#include "nvs_flash.h"
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include "driver/uart.h"
|
|
#include "soc/uart_struct.h"
|
|
|
|
/*AP info and tcp_sever info*/
|
|
//#define DEFAULTSSID "wifi-12"
|
|
//#define DEFAULTPWD "sumof1+1=2"
|
|
#define DEFAULTSSID "tp_wifi_test1"
|
|
#define DEFAULTPWD "1234567890"
|
|
#define DEFAULTPORT 4567
|
|
#define DEFAULTSEVER "192.168.0.102"
|
|
#define BUFFSIZE 1024
|
|
|
|
/* FreeRTOS event group to signal when we are connected & ready to make a request */
|
|
static EventGroupHandle_t wifi_event_group;
|
|
|
|
/**/
|
|
static int connectedflag = 0;
|
|
static int clientsocket;
|
|
static struct sockaddr_in serverAddr;
|
|
|
|
|
|
static esp_err_t event_handler(void *ctx, system_event_t *event)
|
|
{
|
|
switch(event->event_id) {
|
|
case SYSTEM_EVENT_STA_START:
|
|
esp_wifi_connect();
|
|
//printf("event_handler:SYSTEM_EVENT_STA_START\n");
|
|
break;
|
|
case SYSTEM_EVENT_STA_DISCONNECTED:
|
|
//printf("event_handler:SYSTEM_EVENT_STA_DISCONNECTED\n");
|
|
esp_wifi_connect();
|
|
break;
|
|
case SYSTEM_EVENT_STA_CONNECTED:
|
|
//printf("event_handler:SYSTEM_EVENT_STA_CONNECTED!\n");
|
|
break;
|
|
case SYSTEM_EVENT_STA_GOT_IP:
|
|
printf("event_handler:SYSTEM_EVENT_STA_GOT_IP!\n");
|
|
connectedflag=1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
//wifi_init
|
|
static void wifi_init()
|
|
{
|
|
tcpip_adapter_init();
|
|
wifi_event_group = xEventGroupCreate();
|
|
ESP_ERROR_CHECK( esp_event_loop_init(event_handler, NULL) );
|
|
|
|
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
|
|
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
|
|
wifi_config_t wifi_config = {
|
|
.sta = {
|
|
.ssid = DEFAULTSSID,
|
|
.password = DEFAULTPWD
|
|
},
|
|
};
|
|
|
|
ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
|
|
ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
|
|
ESP_ERROR_CHECK( esp_wifi_start() );
|
|
esp_wifi_connect();
|
|
|
|
printf("wifi_init over.\n");
|
|
}
|
|
|
|
|
|
//this task establish a tcp connection and send data
|
|
static void tcp_client(void *pvParameters)
|
|
{
|
|
do
|
|
{
|
|
vTaskDelay(100);
|
|
}
|
|
while(!connectedflag);
|
|
//wating for connecting to AP
|
|
|
|
clientsocket = socket(AF_INET, SOCK_STREAM, 0);
|
|
if(clientsocket < 0)
|
|
{
|
|
printf("socket failed!\n");
|
|
vTaskDelete(NULL);
|
|
}
|
|
serverAddr.sin_family = AF_INET;
|
|
serverAddr.sin_port = htons(DEFAULTPORT);
|
|
serverAddr.sin_addr.s_addr = inet_addr(DEFAULTSEVER);
|
|
|
|
printf("connecting to sever...\n");
|
|
if(connect(clientsocket, (struct sockaddr *)&serverAddr, sizeof(serverAddr)) < 0)
|
|
{
|
|
printf("connect to sever error!\n");
|
|
vTaskDelete(NULL);
|
|
}
|
|
|
|
printf("connect succeed!\n");
|
|
|
|
//create a new task...
|
|
//send(clientsocket, "hello", 6, 0);
|
|
|
|
vTaskDelay(1000/portTICK_RATE_MS);
|
|
char buffsend[BUFFSIZE];
|
|
memset(buffsend,97,BUFFSIZE);//'a'=97
|
|
//send as much as it can
|
|
while(1)
|
|
{
|
|
send(clientsocket, buffsend, BUFFSIZE, 0);
|
|
//vTaskDelay(3000/portTICK_RATE_MS);
|
|
}
|
|
}
|
|
|
|
|
|
void app_main(void)
|
|
{
|
|
nvs_flash_init();
|
|
wifi_init();
|
|
xTaskCreate(&tcp_client,"tcp_client",4096,NULL,5,NULL);
|
|
} |