BUHANKA/RP2040-MacroPad
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button work, but dont understand how read input from pin

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This commit is contained in:
Buhanka 2026-04-08 17:57:25 +03:00
parent 42783e98e4
commit 2c547f642f
1 changed files with 21 additions and 15 deletions
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36
main.c
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@ -1,3 +1,4 @@
#include <stdint.h>
#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/gpio.h"
@ -7,31 +8,36 @@
#define BUTTON_PIN_COLUMN_1 18
#define LED_PIN 25
void button_callback(uint pin);
void button_callback(uint gpio, uint32_t events);
int main() {
stdio_init_all();
printf("Starting\n");
gpio_init(BUTTON_PIN_ROW_1);
gpio_init(BUTTON_PIN_COLUMN_1);
//gpio_init(BUTTON_PIN_COLUMN_1);
gpio_set_dir(BUTTON_PIN_COLUMN_1, GPIO_OUT);
gpio_set_dir(BUTTON_PIN_ROW_1, GPIO_IN);
gpio_pull_up(BUTTON_PIN_ROW_1);
gpio_pull_up(BUTTON_PIN_ROW_1);
gpio_pull_up(BUTTON_PIN_COLUMN_1);
gpio_set_irq_enabled(BUTTON_PIN_ROW_1, GPIO_IRQ_EDGE_RISE | GPIO_IRQ_EDGE_FALL, true);
gpio_set_irq_callback(&button_callback);
irq_set_enabled(IO_IRQ_BANK0, true);
//gpio_set_irq_enabled_with_callback(BUTTON_PIN_ROW_1, GPIO_IRQ_EDGE_FALL | GPIO_IRQ_EDGE_RISE, true, &button_callback);
gpio_init(LED_PIN);
gpio_set_dir(LED_PIN, GPIO_OUT);
while (true) {
if (!gpio_get(BUTTON_PIN_ROW_1)) {
gpio_put(LED_PIN, 0);
// printf("ROW: %i\n", gpio_get(BUTTON_PIN_ROW_1));
// printf("COLUMN: %i\n", gpio_get(BUTTON_PIN_COLUMN_1));
} else {
gpio_put(LED_PIN, 1);
// printf("ROW: %i\n", gpio_get(BUTTON_PIN_ROW_1));
// printf("COLUMN: %i\n", gpio_get(BUTTON_PIN_COLUMN_1));
}
sleep_ms(1000);
}
}
void button_callback(uint pin){
void button_callback(uint gpio, uint32_t events){
gpio_acknowledge_irq(gpio, events);
if(gpio == BUTTON_PIN_ROW_1){
if (events == GPIO_IRQ_EDGE_RISE){
gpio_put(LED_PIN, true);
printf("irq is happend \n");
}
else{
gpio_put(LED_PIN, false);
}
}
}