[arduino code examples for F24]-05 Read free GPIO state

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * GPIO Status Monitoring

 *

 * This program monitors the status (high or low) of multiple GPIO pins on the ESP32-S3.

 * It prints the status of the pins to the serial monitor whenever a change is detected.

 *

 * GPIO Pins Monitored:

 * - GPIO 48

 * - GPIO 47

 * - GPIO 21

 * - GPIO 15

 * - GPIO 14

 * - GPIO 13

 * - GPIO 12

 * - GPIO 40

 *

 * Hardware Requirements:

 * - Connect the pins to appropriate devices or pull them to HIGH/LOW for testing

 */



#define GPIO_PIN_48 48

#define GPIO_PIN_47 47

#define GPIO_PIN_21 21

#define GPIO_PIN_15 15

#define GPIO_PIN_14 14

#define GPIO_PIN_13 13

#define GPIO_PIN_12 12

#define GPIO_PIN_40 40



// Store the previous state of the GPIO pins

bool prevState[8] = {false, false, false, false, false, false, false, false};



void setup() {

  // Initialize serial communication for debugging purposes

  Serial.begin(115200); // Initialize the serial monitor at 115200 baud

  while (!Serial);      // Wait for the serial monitor to open



  // Initialize GPIO pins as inputs

  pinMode(GPIO_PIN_48, INPUT);

  pinMode(GPIO_PIN_47, INPUT);

  pinMode(GPIO_PIN_21, INPUT);

  pinMode(GPIO_PIN_15, INPUT);

  pinMode(GPIO_PIN_14, INPUT);

  pinMode(GPIO_PIN_13, INPUT);

  pinMode(GPIO_PIN_12, INPUT);

  pinMode(GPIO_PIN_40, INPUT);



  Serial.println("GPIO Status Monitoring Started");

}



void loop() {

  // Read the current state of each GPIO pin

  bool currentState[8];

  currentState[0] = digitalRead(GPIO_PIN_48);

  currentState[1] = digitalRead(GPIO_PIN_47);

  currentState[2] = digitalRead(GPIO_PIN_21);

  currentState[3] = digitalRead(GPIO_PIN_15);

  currentState[4] = digitalRead(GPIO_PIN_14);

  currentState[5] = digitalRead(GPIO_PIN_13);

  currentState[6] = digitalRead(GPIO_PIN_12);

  currentState[7] = digitalRead(GPIO_PIN_40);



  // Check for changes in GPIO pin states

  for (int i = 0; i < 8; i++) {

    if (currentState[i] != prevState[i]) {

      // Print the pin number and its new state if it has changed

      Serial.print("GPIO ");

      Serial.print(i == 0 ? GPIO_PIN_48 : 

                   i == 1 ? GPIO_PIN_47 : 

                   i == 2 ? GPIO_PIN_21 : 

                   i == 3 ? GPIO_PIN_15 : 

                   i == 4 ? GPIO_PIN_14 : 

                   i == 5 ? GPIO_PIN_13 : 

                   i == 6 ? GPIO_PIN_12 : GPIO_PIN_40);

      Serial.print(" changed to ");

      Serial.println(currentState[i] ? "HIGH" : "LOW");

      // Update the previous state

      prevState[i] = currentState[i];

    }

  }



  // Delay to avoid flooding the serial monitor

  delay(100); // Adjust the delay as needed

}