main fsm sketch for bins

IRQ serie modem
IRQ serie gps
IRQ serie nano.

IRQ rtc - cuenta minutos

void send_msg_gps();
void send_msg_modem();
void send_msg_nano();

bool new_msg_gps_;
bool new_msg_modem_;
bool new_msg_nano_;

enum gps_state {TURNING_ON =0, CONFIGURING=1, FIXING=2};



unsigned int minute_counter

main:


void one_minute_alarm()
{
  minute_counter++;

  if (should_fix_gps(minute_counter))
  {
    if (gps_state == OFF)
      gps_state = POWER_ON;
  }

  if (should_read_nano(minute_counter)) {
    if (nano_state == OFF)
      nano_state = POWER_ON;
  }

  if (should_send_message(minute_counter)) {
    if (modem_state == NOT_SENDING)
      modem_state = SEND_MESSAGE;
  }
}



main()
{

  init_board()  //
  configure_one_minute_timer_callback(one_minute_alarm);

 while(true)
 {

   switch (gps_state)
  {
      case POWER_ON:
        power_gps_on() // GPIO operation.
        gps_state = FIXING;
        gps_timeout = minute_counter + 10;
        break;
      case FIXING:
        if(new_msg_gps_ && gps_has_fix(gps_message_buffer_))
        {
          save_gps_location_in_event_buffer(gps_message_buffer_);
          gps_state = POWER_OFF;
        }
        else (minute_counter > gps_timeout) {
          gps_state = POWER_OFF;
        }
        break;
      case POWER_OFF:
        power_gps_off();
        gps_state = OFF;
        break;
      case OFF;
        break;
  }

  switch (nano_state)
  {
    case POWER_ON:
      turn_nano_on(); // gpio operation
      nano_state = TURNING_ON;
      break;
    case OFF:
      break;
    case POWER_OFF:
      turn_nano_off(); // gpio operation
      nano_state = OFF;
      break;

    case TURNING_ON:
      if (new_msg_nano_ && nano_message_buffer_ == "ME PRENDI") {
        send_msg_nano("configuracion");
        nano_state = CONFIGURING;
      }
      else {
        send_msg_nano("reset");
        nano_state = TURNING_ON;
      }
    case CONFIGURING:
      if (nano_message_buffer_ == "ME CONFIGURE") {
        send_msg_nano("read tags");
        nano_state = READING;
      }
      else {
        send_msg_nano("reset");
        nano_state = TURNING_ON;
      }
    }
    case READING:
      if (new_tag_read_from_nano(nano_message_buffer_)) {
        add_tag_id_event_to_message(tag_id);
        process_and_deduplicate_tag_ids();
        nano_state = POWER_OFF;
      }
      else {
        send_msg_nano("reset");
        nano_state = TURNING_ON;
      }
    }
}