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https://github.com/espressif/esp-idf
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5ecc88cb33
You can set esp32 as AP/STA, client/sever, sender/recever in menuconfig. You can set whether to display delay time info in menuconfig. Now you can transfer data between esp and esp.
252 lines
6.5 KiB
C
252 lines
6.5 KiB
C
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#include "tcp_perf.h"
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extern int connectedflag;
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extern int totle_data;
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#if ESP_TCP_PERF_TX && ESP_TCP_DELAY_INFO
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extern int totle_pack;
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extern int send_success;
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extern int send_fail;
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extern int delay_classify[5];
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#endif
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/* FreeRTOS event group to signal when we are connected & ready to make a request */
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static EventGroupHandle_t wifi_event_group;
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/*socket*/
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static int sever_socket;
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static struct sockaddr_in sever_addr;
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static struct sockaddr_in client_addr;
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static unsigned int socklen = sizeof(client_addr);
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static int connect_soc;
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static esp_err_t event_handler(void *ctx, system_event_t *event)
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{
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switch(event->event_id) {
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case SYSTEM_EVENT_STA_START:
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esp_wifi_connect();
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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esp_wifi_connect();
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break;
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case SYSTEM_EVENT_STA_CONNECTED:
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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ESP_LOGI(TAG, "event_handler:SYSTEM_EVENT_STA_GOT_IP!\n");
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ESP_LOGI(TAG, "ip:%s\n",ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
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connectedflag=1;
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break;
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case SYSTEM_EVENT_AP_STACONNECTED:
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ESP_LOGI(TAG, "station:"MACSTR" join,AID=%d\n",
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MAC2STR(event->event_info.sta_connected.mac),
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event->event_info.sta_connected.aid);
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connectedflag=1;
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break;
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case SYSTEM_EVENT_AP_STADISCONNECTED:
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ESP_LOGI(TAG, "station:"MACSTR"leave,AID=%d\n",
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MAC2STR(event->event_info.sta_disconnected.mac),
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event->event_info.sta_disconnected.aid);
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break;
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default:
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break;
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}
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return ESP_OK;
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}
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//send data
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void send_data(void *pvParameters)
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{
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int len=0;
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char databuff[DEFAULT_PKTSIZE];
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memset(databuff,97,DEFAULT_PKTSIZE);
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vTaskDelay(100/portTICK_RATE_MS);
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ESP_LOGI(TAG,"start sending...");
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while(1)
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{
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#if ESP_TCP_PERF_TX && ESP_TCP_DELAY_INFO
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//delaytime
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struct timeval tv_start;
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struct timeval tv_finish;
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unsigned int send_delay_ms;
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totle_pack++;
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gettimeofday(&tv_start,NULL);
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#endif
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len=send(connect_soc, databuff, DEFAULT_PKTSIZE, 0);
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#if ESP_TCP_PERF_TX && ESP_TCP_DELAY_INFO
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gettimeofday(&tv_finish,NULL);
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#endif
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if(len>0)
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{
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totle_data+=len;
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#if ESP_TCP_PERF_TX && ESP_TCP_DELAY_INFO
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send_success++;
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send_delay_ms=(tv_finish.tv_sec-tv_start.tv_sec)*1000
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+(tv_finish.tv_usec-tv_start.tv_usec)/1000;
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//ESP_LOGI(TAG, "send_delay_ms=%d",send_delay_ms);
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if(send_delay_ms<30)
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delay_classify[0]++;
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else if(send_delay_ms<100)
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delay_classify[1]++;
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else if(send_delay_ms<300)
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delay_classify[2]++;
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else if(send_delay_ms<1000)
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delay_classify[3]++;
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else
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delay_classify[4]++;
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#endif
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}
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else
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{
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#if ESP_TCP_PERF_TX && ESP_TCP_DELAY_INFO
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send_fail++;
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#endif
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/*for faster send&receive,don't show error code.
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*if it can't work as expectations,unnote the two lines here
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**/
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//perror("data_count error");
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//vTaskDelay(500/portTICK_RATE_MS);
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}
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}
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}
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//send data
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void recv_data(void *pvParameters)
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{
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int len=0;
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char databuff[DEFAULT_PKTSIZE];
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while(1)
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{
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len=recv(connect_soc, databuff, DEFAULT_PKTSIZE, 0);
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if(len>0)
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{
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totle_data+=len;
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}
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else
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{
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perror("data_count error");
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vTaskDelay(500/portTICK_RATE_MS);
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}
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}
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}
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//use this esp32 as a tcp sever. return 0:success -1:error
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int creat_tcp_sever()
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{
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ESP_LOGI(TAG, "sever socket....port=%d\n",DEFAULTPORT);
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sever_socket = socket(AF_INET, SOCK_STREAM, 0);
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if(sever_socket < 0)
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{
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perror("socket() error:");
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return -1;
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}
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sever_addr.sin_family = AF_INET;
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sever_addr.sin_port = htons(DEFAULTPORT);
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sever_addr.sin_addr.s_addr = htonl(INADDR_ANY);
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if(bind(sever_socket,(struct sockaddr*)&sever_addr,sizeof(sever_addr))<0)
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{
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perror("bind() error");
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close(sever_socket);
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return -1;
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}
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if(listen(sever_socket,5)<0)
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{
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perror("listen() error");
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close(sever_socket);
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return -1;
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}
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connect_soc = accept(sever_socket,(struct sockaddr*)&client_addr,&socklen);
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if(connect_soc<0)
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{
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perror("accept() error");
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close(sever_socket);
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return -1;
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}
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/*connection established，now can send/recv*/
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ESP_LOGI(TAG, "tcp connection established!");
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return 0;
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}
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//use this esp32 as a tcp client. return 0:success -1:error
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int creat_tcp_client()
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{
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ESP_LOGI(TAG, "client socket....severip:port=%s:%d\n",DEFAULTSEVERIP,DEFAULTPORT);
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connect_soc = socket(AF_INET, SOCK_STREAM, 0);
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if(connect_soc < 0)
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{
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perror("socket failed!");
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return -1;
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}
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sever_addr.sin_family = AF_INET;
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sever_addr.sin_port = htons(DEFAULTPORT);
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sever_addr.sin_addr.s_addr = inet_addr(DEFAULTSEVERIP);
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printf("connecting to sever...");
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if(connect(connect_soc, (struct sockaddr *)&sever_addr, sizeof(sever_addr)) < 0)
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{
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perror("connect to sever error!");
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return -1;
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}
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ESP_LOGI(TAG,"connect to sever success!");
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return 0;
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}
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//wifi_init_sta
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void wifi_init_sta()
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{
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tcpip_adapter_init();
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wifi_event_group = xEventGroupCreate();
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ESP_ERROR_CHECK( esp_event_loop_init(event_handler, NULL) );
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = DEFAULTSSID,
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.password = DEFAULTPWD
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},
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};
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ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
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ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
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ESP_ERROR_CHECK( esp_wifi_start() );
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ESP_LOGI(TAG, "wifi_init_sta finished.");
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ESP_LOGI(TAG, "connect to ap SSID:%s password:%s \n",DEFAULTSSID,DEFAULTPWD);
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}
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//wifi_init_softap
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void wifi_init_softap()
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{
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tcpip_adapter_init();
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wifi_event_group = xEventGroupCreate();
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ESP_ERROR_CHECK( esp_event_loop_init(event_handler, NULL) );
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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wifi_config_t wifi_config = {
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.ap = {
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.ssid = DEFAULTSSID,
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.ssid_len=0,
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.max_connection=MAXSTACONN,
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.password = DEFAULTPWD,
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.authmode=WIFI_AUTH_WPA_WPA2_PSK
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},
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};
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ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_AP) );
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ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_AP, &wifi_config) );
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ESP_ERROR_CHECK( esp_wifi_start() );
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ESP_LOGI(TAG, "wifi_init_softap finished.SSID:%s password:%s \n",DEFAULTSSID,DEFAULTPWD);
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}
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void close_socket()
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{
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close(connect_soc);
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close(sever_socket);
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}
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