sketch.ino

diagram.json

#include <Arduino.h>

// Define task priorities
#define LED_TASK_PRIORITY 1
#define BUTTON_TASK_PRIORITY 2

// Declare task handles
TaskHandle_t xLedTaskHandle = NULL;
TaskHandle_t xButtonTaskHandle = NULL;

// LED Task function
void vLedTask(void *parameter) {
    const int ledPin = 2; // Use built-in LED pin
    pinMode(ledPin, OUTPUT);
    while (1) {
        digitalWrite(ledPin, HIGH);
        vTaskDelay(500 / portTICK_PERIOD_MS);
        digitalWrite(ledPin, LOW);
        vTaskDelay(500 / portTICK_PERIOD_MS);
    }
}

// Button Task function
void vButtonTask(void *parameter) {
    const int buttonPin = 0; // GPIO 0 for button
    pinMode(buttonPin, INPUT_PULLUP); // Set pin 0 as input with pull-up resistor
    while (1) {
        int buttonState = digitalRead(buttonPin); // Read button state
        if (buttonState == LOW) { // Button pressed
            if (eTaskGetState(xLedTaskHandle) == eRunning) { // Check if LED task is running
                vTaskSuspend(xLedTaskHandle);
                Serial.println("LED Task Suspended");
            }
        } else { // Button released
            if (eTaskGetState(xLedTaskHandle) == eSuspended) { // Check if LED task is suspended
                vTaskResume(xLedTaskHandle);
                Serial.println("LED Task Resumed");
            }
        }
        vTaskDelay(100 / portTICK_PERIOD_MS); // Debounce delay
    }
}

void setup() {
    // Initialize Serial Communication
    Serial.begin(9600);

    // Create LED Task
    xTaskCreatePinnedToCore(
        vLedTask,               // Task function
        "LED Task",             // Task name
        1024,                   // Stack size
        NULL,                   // Task parameter
        LED_TASK_PRIORITY,      // Task priority
        &xLedTaskHandle,        // Task handle
        1                      // Core to run on
    );

    // Create Button Task
    xTaskCreatePinnedToCore(
        vButtonTask,            // Task function
        "Button Task",          // Task name
        1024,                   // Stack size
        NULL,                   // Task parameter
        BUTTON_TASK_PRIORITY,   // Task priority
        &xButtonTaskHandle,     // Task handle
        1                      // Core to run on
    );

    // Delete "setup and loop" task
    vTaskDelete(NULL);
}

void loop() {
    // Execution should never get here
}
