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Esp 32 bluetooth led

Fer NG answered on December 8, 2022 Popularity 6/10 Helpfulness 3/10

answer Esp 32 bluetooth led

Esp 32 bluetooth led

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#include "BluetoothSerial.h"
#define LED4 4

BluetoothSerial SerialBT;

void setup() {
  Serial.begin(115200);
  initBT();
  pinMode(LED4, OUTPUT);
}

void initBT(){
  if(!SerialBT.begin("ESP32CAM-CLASSIC-BT")){
    Serial.println("An error occurred initializing Bluetooth");
    ESP.restart();
  }else{
    Serial.println("Bluetooth initialized");
  }

  SerialBT.register_callback(btCallback);
  Serial.println("The device started, now you can pair it with bluetooth");
}

void btCallback(esp_spp_cb_event_t event, esp_spp_cb_param_t *param){
  if(event == ESP_SPP_SRV_OPEN_EVT){
    Serial.println("Client Connected!");
  }else if(event == ESP_SPP_DATA_IND_EVT){
    Serial.printf("ESP_SPP_DATA_IND_EVT len=%d, handle=%d\n\n", param->data_ind.len, param->data_ind.handle);
        String stringRead = String(*param->data_ind.data);
        int paramInt = stringRead.toInt() - 48;
        Serial.printf("paramInt: %d\n", paramInt);
        if(paramInt == 1){digitalWrite(LED4, HIGH); writeSerialBT("LED 4 is ON.");}
        if(paramInt == 0){digitalWrite(LED4, LOW); writeSerialBT("LED 4 is OFF.");}
        if(paramInt == 3){
          if(digitalRead(LED4)){writeSerialBT("LED 4 now is ON.");}
          else {writeSerialBT("LED 4 now is OFF.");}
        }
    }
}

void writeSerialBT(String respuesta){
  SerialBT.println(respuesta);
  SerialBT.flush();
}

void loop() { }

Popularity 6/10 Helpfulness 3/10 Language whatever

Source: community.appinventor.mit.edu

Tags: bluetooth led whatever

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Contributed on Dec 08 2022

Fer NG

0 Answers Avg Quality 2/10

Esp 32 bluetooth led

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