main.c

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#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_boot_entry.h"
#include "ra8_err.h"
#include "ra8_isr.h"
#include "ra8_log.h"
#include "ra8_reset.h"
#include "ra8_time.h"

typedef enum : uint32_t {
  k_reset_cause_cpu_hz_at_reset = 8400000U, 
  k_reset_cause_settle_ms       = 200U,     
  k_reset_cause_loop_period_ms  = 50U,      
} reset_cause_demo_const_t;

volatile uint32_t g_reset_cause_loop = 0U;

volatile uint32_t g_reset_cause_initial = 0U;

RA8_INTERNAL static void internal_reset_cause_panic_halt(void)
{
  while (1) {
    __asm__ volatile("wfi");
  }
}
 
void main(void)
{
  if (ra8_time_init(k_reset_cause_cpu_hz_at_reset) != k_ra8_ok) {
    internal_reset_cause_panic_halt();
  }
  ra8_isr_globals_enable();
 
  if (ra8_reset_init() != k_ra8_ok) {
    internal_reset_cause_panic_halt();
  }
 
  ra8_reset_cause_t cause = k_ra8_reset_cause_unknown;
  if (ra8_reset_get_cause(&cause) != k_ra8_ok) {
    internal_reset_cause_panic_halt();
  }
  g_reset_cause_initial = (uint32_t)cause;
  ra8_log_info_val("reset_cause_demo", "boot cause", (uint32_t)cause);
 
  if (cause != k_ra8_reset_cause_software) {
    /* Cold boot (POR or other) -- trigger the SW-reset path that the HIL
     * gate validates. ra8_reset_software_reset does not return on target. */
    ra8_delay_ms(k_reset_cause_settle_ms);
    ra8_reset_software_reset();
    internal_reset_cause_panic_halt();
  }
 
  /* Post-reset boot: cause == software. Advance the HIL counter so
   * jlink_memprobe sees movement and the gate passes. */
  while (1) {
    g_reset_cause_loop += 1U;
    ra8_delay_ms(k_reset_cause_loop_period_ms);
  }
}