/*
 * LAB Name: Raspberry Pi Pico Digital Inputs & Outputs (C/C++ SDK)
 * Author: Khaled Magdy
 * For More Info Visit: www.DeepBlueMbedded.com
*/
#include "pico/stdlib.h"
 
#define LED_PIN 20
#define BTN_PIN 21
 
int main() 
{
    gpio_init(LED_PIN);
    gpio_set_dir(LED_PIN, GPIO_OUT);
    gpio_init(BTN_PIN);
    gpio_set_dir(BTN_PIN, GPIO_IN);
    while (1) 
    {
        while(gpio_get(BTN_PIN))
        {
           gpio_put(LED_PIN, 1);
        }
        gpio_put(LED_PIN, 0);
    }
}