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Code Block
languagecpp
titlemain.c
// Blink an LED
#include <stdbool.h>
#include "gpio.h"
#include "interrupt.h"
#include "log.h"
#include "soft_timer.h"
#include "wait.h"

#define BLINK_LED_TIMEOUT_SECS 1

// Timeout callback
static void prv_blink_timeout(SoftTimerID timer_id, void *context) {
  GPIOAddress *led = context;
  gpio_toggle_state(led);

  LOG_DEBUG("Toggling LED\n");

  // Schedule another timer - this creates a periodic timer
  soft_timer_start_seconds(BLINK_LED_TIMEOUT_SECS, prv_blink_timeout, &led, NULL);
}

int main(void) {
  LOG_DEBUG("Hello World!\n");

  // Initialize our modules
  gpio_init();
  interrupt_init();
  soft_timer_init();

  // Set up the pin
  GPIOAddress led = {
    .port = GPIO_PORT_C,  //
    .pin = 9,             //
  };
  GPIOSettings gpio_settings = {
    .direction = GPIO_DIR_OUT,  //
    .state = GPIO_STATE_LOW,    //
  };
  gpio_init_pin(&led, &gpio_settings);

  // Begin a timer
  soft_timer_start_seconds(BLINK_LED_TIMEOUT_SECS, prv_blink_timeout, &led, NULL);

  // Infinite loop
  while (true) {
    // Wait for interrupts
    wait();
  }

  return 0;
}

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