main.c

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#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_board_ek_ra8d2.h"
#include "ra8_boot_entry.h"
#include "ra8_cgc.h"
#include "ra8_err.h"
#include "ra8_isr.h"
#include "ra8_time.h"

typedef enum : uint32_t {
  k_gpio_demo_poll_ms = 100U, 
} gpio_demo_const_t;

volatile uint32_t g_gpio_input_tick = 0U;

RA8_INTERNAL static void internal_gpio_demo_panic_halt(void)
{
  while (1) {
    __asm__ volatile("wfi");
  }
}

RA8_INTERNAL static void internal_gpio_demo_setup_or_halt(void)
{
  uint32_t cpuclk0_hz = 0U;
  if (ra8_cgc_init() != k_ra8_ok) {
    internal_gpio_demo_panic_halt();
  }
  if (ra8_cgc_get_clock_hz(k_ra8_clock_id_cpuclk0, &cpuclk0_hz) != k_ra8_ok) {
    internal_gpio_demo_panic_halt();
  }
  if (ra8_time_init(cpuclk0_hz) != k_ra8_ok) {
    internal_gpio_demo_panic_halt();
  }
  if (ra8_board_led_init(k_ra8_board_led1) != k_ra8_ok) {
    internal_gpio_demo_panic_halt();
  }
  if (ra8_board_sw_init(k_ra8_board_sw1) != k_ra8_ok) {
    internal_gpio_demo_panic_halt();
  }
}

[[nodiscard]] RA8_INTERNAL static ra8_err_t
internal_gpio_demo_one_iter(ra8_board_sw_state_t* out_state)
{
  ra8_err_t err = ra8_board_sw_read(k_ra8_board_sw1, out_state);
  if (err != k_ra8_ok) {
    return err;
  }
  if (*out_state == k_ra8_board_sw_pressed) {
    return ra8_board_led_on(k_ra8_board_led1);
  }
  return ra8_board_led_off(k_ra8_board_led1);
}
 
void main(void)
{
  internal_gpio_demo_setup_or_halt();
  ra8_isr_globals_enable();
 
  while (1) {
    ra8_board_sw_state_t s = k_ra8_board_sw_released;
    if (internal_gpio_demo_one_iter(&s) != k_ra8_ok) {
      break;
    }
    g_gpio_input_tick += 1U;
    ra8_delay_ms((uint32_t)k_gpio_demo_poll_ms);
  }
  internal_gpio_demo_panic_halt();
}