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 8
* - GPIO 9
* - GPIO 10
* - GPIO 15
* - GPIO 16
* - GPIO 17
* - GPIO 18
* - GPIO 0
*
* Hardware Requirements:
* - Connect the pins to appropriate devices or pull them to HIGH/LOW for testing
*/
#define GPIO_PIN_8 8
#define GPIO_PIN_9 9
#define GPIO_PIN_10 10
#define GPIO_PIN_15 15
#define GPIO_PIN_16 16
#define GPIO_PIN_17 17
#define GPIO_PIN_18 18
#define GPIO_PIN_0 0
// 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_8, INPUT);
pinMode(GPIO_PIN_9, INPUT);
pinMode(GPIO_PIN_10, INPUT);
pinMode(GPIO_PIN_15, INPUT);
pinMode(GPIO_PIN_16, INPUT);
pinMode(GPIO_PIN_17, INPUT);
pinMode(GPIO_PIN_18, INPUT);
pinMode(GPIO_PIN_0, 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_8);
currentState[1] = digitalRead(GPIO_PIN_9);
currentState[2] = digitalRead(GPIO_PIN_10);
currentState[3] = digitalRead(GPIO_PIN_15);
currentState[4] = digitalRead(GPIO_PIN_16);
currentState[5] = digitalRead(GPIO_PIN_17);
currentState[6] = digitalRead(GPIO_PIN_18);
currentState[7] = digitalRead(GPIO_PIN_0);
// 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_8 :
i == 1 ? GPIO_PIN_9 :
i == 2 ? GPIO_PIN_10 :
i == 3 ? GPIO_PIN_15 :
i == 4 ? GPIO_PIN_16 :
i == 5 ? GPIO_PIN_17 :
i == 6 ? GPIO_PIN_18 : GPIO_PIN_0);
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
}
4-free-gpio-state.zip (Size: 1.04 KB / Downloads: 4)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:
4-free-gpio-state.ino.merged.zip (Size: 179.58 KB / Downloads: 6)