sprintf(th_data,"tem:%.2f , hum:%.2f",T,H); esp\_ble\_gatts\_set\_attr\_value(param->read.handle,sizeof(th_data),(uint8\_t\*)th_data); } break; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19.
sprintf(g_fullPath,“%s/%s”,g_curPath,g_curImg_p->name); printf(g_fullPath); lv_img_set_src(ui_Image1, g_fullPath); // 显示图片的总数和索引 sprintf(g_fullPath,“%d/%d,exit”,g_curImg_p->index,imgs_total_nums); lv_label_set_text(ui_Labbtnswitch, g_fullPath); } }stat...
audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT); audio.setVolume(10);// 0...21charhttpPath[60];sprintf(httpPath,"%s%s%s","http://music.163.com/song/media/outer/url?id=", music_id,".mp3"); Serial.println(httpPath); audio.connecttohost(httpPath);// 128k mp3xTaskCreatePinnedToCore(...
(1000 / portTICK_RATE_MS); sprintf(cPayload, "%s : %d ", "hello from ESP32 (QOS0)", i++); paramsQOS0.payloadLen = strlen(cPayload); @@ -328,5 +360,5 @@ void app_main() ESP_ERROR_CHECK( err ); initialise_wifi(); - xTaskCreatePinnedToCore(&aws_iot_task, "aws_iot_...
sprintf(p_request, "POST %s HTTP/1.0\r\nHost: %s:%d\r\nContent-Length: %d\r\nUser-Agent: ESP32\r\nAccept: */*\r\n\r\n", url->path, url->host, url->port,length) 这个就是我们首先要写的东西。 这个里面有一个很关机的参数是Content-Length:length 这个代表的是payload段的长度,因为...
u8g2.setCursor(15,55);sprintf(str,"Vol: %2.2u",rx.getVolume()); u8g2.print(str); u8g2.sendBuffer();delay(1000); } 网络收音: 这里其实可以重点讲解一下,因为涉及到了DAC。关于什么是ADC/DAC大家可以看这篇博文: 整个webradio的实现过程可以划分为三部分: ...
__IO u8 mqttstate=0;charwifi_uid[]="rookie";charwifi_pwd[]="yy061457";//连接WIFI ESP32可以设置为自动重连voidConnectWifi(void){sprintf((char*)Rx2_sBuf,CONNECTWIFI,wifi_uid,wifi_pwd);HAL_UART_Transmit(&huart2,Rx2_sBuf,strlen((constchar*)Rx2_sBuf),10); ...
lcd_buff, "%s",ssid);lcd_show_string(0, 90, 320, 16, 16, lcd_buff, BLUE);sprintf(lcd_...
sprintf(payload, “%s}”, payload); // Closes the dictionary brackets Serial.println(payload); Serial.println(client.publish(topic1,payload) ? “published” : “notpublished”); //Do same for other topic as well client.publish()将数据发布到UbiDots。
ESP_LOGI(TAG,"MQTT_EVENT_DATA");printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);printf("DATA=%.*s\r\n", event->data_len, event->data);sprintf(cmdbuf,"%.*s",event->data_len,event->data);if(strstr(cmdbuf,":ledred")){ ...