use red LED to indicate system startup

2 files changed, 20 insertions, 12 deletions

diff --git a/ao_flight.c b/ao_flight.c
index f31b4cd4..5060b53c 100644
--- a/ao_flight.c
+++ b/ao_flight.c
@@ -20,15 +20,15 @@
 
 /* Main flight thread. */
 
-__xdata struct ao_adc	ao_flight_data;
-__data enum flight_state	ao_flight_state;
-__data uint16_t			ao_flight_state_tick;
-__data int16_t			ao_flight_accel;
-__data int16_t			ao_flight_pres;
-__data int16_t			ao_ground_pres;
-__data int16_t			ao_ground_accel;
-__data int16_t			ao_min_pres;
-__data uint16_t			ao_launch_time;
+__xdata struct ao_adc		ao_flight_data;		/* last acquired data */
+__data enum flight_state	ao_flight_state;	/* current flight state */
+__data uint16_t			ao_flight_state_tick;	/* time of last data */
+__data int16_t			ao_flight_accel;	/* filtered acceleration */
+__data int16_t			ao_flight_pres;		/* filtered pressure */
+__data int16_t			ao_ground_pres;		/* startup pressure */
+__data int16_t			ao_ground_accel;	/* startup acceleration */
+__data int16_t			ao_min_pres;		/* minimum recorded pressure */
+__data uint16_t			ao_launch_time;		/* time of launch detect */
 
 /* Accelerometer calibration
  *
@@ -111,6 +111,8 @@ ao_flight(void)
 				ao_flight_state_tick = ao_time();
 				ao_report_notify();
 			}
+			/* signal successful initialization by turning off the LED */
+			ao_led_off(AO_LED_RED);
 			break;
 		case ao_flight_launchpad:
 			if (ao_flight_accel < ACCEL_BOOST || 
diff --git a/ao_main.c b/ao_main.c
index 85fb04f3..a63cadb7 100644
--- a/ao_main.c
+++ b/ao_main.c
@@ -24,12 +24,18 @@ main(void)
 	while (!(SLEEP & SLEEP_XOSC_STB))
 		;
 
+	/* Turn on the red LED until the system is stable */
+	ao_led_init();
+	ao_led_on(AO_LED_RED);
+
 	ao_timer_init();
 	ao_adc_init();
 	ao_beep_init();
-	ao_led_init();
-	ao_usb_init();
-	ao_ee_init();
 	ao_cmd_init();
+	ao_ee_init();
+	ao_flight_init();
+	ao_log_init();
+	ao_report_init();
+	ao_usb_init();
 	ao_start_scheduler();
 }