41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
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#include <Arduino.h>
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/*Program to control LED (ON/OFF) from ESP32 using Serial Bluetooth
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* Thanks to Neil Kolbans for his efoorts in adding the support to Arduino IDE
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* Turotial on: www.circuitdigest.com
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*/
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#include "BluetoothSerial.h" //Header File for Serial Bluetooth, will be added by default into Arduino
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BluetoothSerial ESP_BT; //Object for Bluetooth
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int incoming;
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void setup() {
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Serial.begin(9600); //Start Serial monitor in 9600
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ESP_BT.begin("ESP32_LED_Control"); //Name of your Bluetooth Signal
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Serial.println("Bluetooth Device is Ready to Pair");
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pinMode (LED_BUILTIN, OUTPUT);//Specify that LED pin is output
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}
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void loop() {
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if (ESP_BT.available()) { //Check if we receive anything from Bluetooth
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incoming = ESP_BT.read(); //Read what we recevive
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Serial.print("Received:"); Serial.println(incoming);
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if (incoming == 49) {
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digitalWrite(LED_BUILTIN, HIGH);
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ESP_BT.println("LED turned ON");
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}
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if (incoming == 48) {
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digitalWrite(LED_BUILTIN, LOW);
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ESP_BT.println("LED turned OFF");
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}
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if (incoming == 57) {
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ESP_BT.println("[APP] Free memory: " + String(esp_get_free_heap_size()) + " bytes");
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}
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}
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delay(1000);
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}
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