app控制esp32內建LED

建立控制端APP

appinventor

上傳程式到ESP32

和上一篇"藍芽基本通訊&控制LED-ESP32"大同小異-https://esp32blairan.blogspot.com/2021/05/esp32_7.html

#include <BluetoothSerial.h>

BluetoothSerial myBT;

char incomeData;

void setup(){

    Serial.begin(115200);

    myBT.begin("ctkBT-01");

    pinMode(LED_BUILTIN, OUTPUT);

}

void loop(){

    if (myBT.available()){

        incomeData=myBT.read();

        if (incomeData=='1'){

            digitalWrite(LED_BUILTIN, HIGH);

        }

        if (incomeData=='0'){

            digitalWrite(LED_BUILTIN, LOW);

        }

    }

}

藍芽連結手機APP和ESP32