#include <stdio.h>
#include "pico/stdlib.h"
#include "steptime.pio.h"

#define PAD_PIN 26

#define ST_LOOP 200
#define ST_SETTLE 20000

int main() {
  PIO pio;
  uint sm;
  uint offset;

  stdio_init_all();

  gpio_init(PAD_PIN);
  gpio_set_dir(PAD_PIN, GPIO_IN);
  gpio_pull_up(PAD_PIN);

  // claim a pio statemachine
  bool ok = pio_claim_free_sm_and_add_program_for_gpio_range(&steptime_program,
                                                             &pio,
                                                             &sm,
                                                             &offset,
                                                             PAD_PIN,
                                                             1,
                                                             true);
  hard_assert(ok);

  // setup steptime on pio statemachine
  steptime_program_init(pio, sm, offset, PAD_PIN);

  for (;;) {
    pio_sm_put(pio, sm, ST_LOOP);
    pio_sm_put(pio, sm, ST_SETTLE);

    printf("value=%d\n", pio_sm_get(pio, sm));

    sleep_ms(250);
  }
}