General Purpose Input/Output (GPIO) Pins

Contents

General Purpose Input/Output (GPIO) Pins#

The General Purpose Input/Output (GPIO) pins on the PULSAR C6 development board are used to connect external devices to the microcontroller. These pins can be configured as either input or output. In this section, we will explore how to work with GPIO pins on the PULSAR C6 development board using both MicroPython and C++.

_images/top.png — Fig. 13 PULSAR C6 Development Board#

Let’s begin with a simple example: blinking an LED. This example demonstrates how to control GPIO pins on the PULSAR C6 development board using both MicroPython and C++.

Working with LEDs on ESP32-C6#

In this section, we will learn how to control a single LED using a microcontroller. The LED will be connected to a GPIO pin, and we will control its on/off states using a simple program.

LED Blinking Example#

Tip

The following example demonstrates how to blink an LED connected to GPIO pin 6 on the PULSAR C6 development board. The LED will turn on for 1 second and then turn off for 1 second, repeating this pattern indefinitely.

import machine
import time

led = machine.Pin(6, machine.Pin.OUT)

def loop():
    while True:
        led.on()  # Turn the LED on
        time.sleep(1)  # Wait for 1 second
        led.off()  # Turn the LED off
        time.sleep(1)  # Wait for 1 second

loop()

#define LED 6

// The setup function runs once when you press reset or power the board
void setup() {
    // Initialize digital pin LED as an output.
    pinMode(LED, OUTPUT);
}

// The loop function runs continuously
void loop() {
    digitalWrite(LED, HIGH);   // Turn the LED on (HIGH is the voltage level)
    delay(1000);              // Wait for 1 second
    digitalWrite(LED, LOW);   // Turn the LED off (LOW is the voltage level)
    delay(1000);              // Wait for 1 second
}

#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"

#define BLINK_GPIO GPIO_NUM_6  // Puedes cambiarlo según tu hardware

void app_main(void)
{
    // Configura el GPIO como salida
    gpio_reset_pin(BLINK_GPIO);
    gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);

    while (1) {
        // Enciende el LED
        gpio_set_level(BLINK_GPIO, 1);
        vTaskDelay(pdMS_TO_TICKS(500)); // 500 ms

        // Apaga el LED
        gpio_set_level(BLINK_GPIO, 0);
        vTaskDelay(pdMS_TO_TICKS(500)); // 500 ms
    }
}