gistfile1.txt

#include "mgos.h"

void sayit(void *arg) {
  LOG(LL_INFO, ("TICK!"));
}

IRAM void _timer_cb(void *arg) {
  static uint32_t count = 0;
  if (((++count) % 1000) == 0) {
    mgos_invoke_cb(sayit, NULL, true);
  }
  (void) arg;
}

enum mgos_app_init_result mgos_app_init(void) {
  mgos_set_hw_timer(1000, 1, _timer_cb, NULL);
  return MGOS_APP_INIT_SUCCESS;
}