[arduino code examples for B2]-02 Read digital input ports state

Code:
/*

   Made by KinCony IoT

   https://www.kincony.com



   Demo: KinCony B2 Digital Input Read

   Board: KinCony B2 (ESP32)



   Digital Input 1 -> GPIO6

   Digital Input 2 -> GPIO7

*/



#define DI1_PIN 6

#define DI2_PIN 7



// Store previous input states

int lastDI1State = HIGH;

int lastDI2State = HIGH;



void setup()

{

  // Initialize serial monitor

  Serial.begin(115200);

  Serial.println("KinCony B2 Digital Input Demo");



  // Configure digital input pins

  // Change INPUT to INPUT_PULLUP if your hardware requires internal pull-up

  pinMode(DI1_PIN, INPUT_PULLUP);

  pinMode(DI2_PIN, INPUT_PULLUP);



  // Read initial states

  lastDI1State = digitalRead(DI1_PIN);

  lastDI2State = digitalRead(DI2_PIN);



  Serial.print("DI1 Initial State: ");

  Serial.println(lastDI1State);



  Serial.print("DI2 Initial State: ");

  Serial.println(lastDI2State);

}



void loop()

{

  // Read current input states

  int di1State = digitalRead(DI1_PIN);

  int di2State = digitalRead(DI2_PIN);



  // Check if DI1 state changed

  if (di1State != lastDI1State)

  {

    lastDI1State = di1State;



    Serial.print("DI1 Changed: ");

    Serial.println(di1State);

  }



  // Check if DI2 state changed

  if (di2State != lastDI2State)

  {

    lastDI2State = di2State;



    Serial.print("DI2 Changed: ");

    Serial.println(di2State);

  }



  // Small delay for stability

  delay(10);

}