altos: Split out tiny telemetry from full telemetry

The TeleMini and TeleNano boards do not have either GPS or
accelermeters, and they also run the kalman filter which produces
standard unit measurements for the flight height/speed/accel
values. This makes the telemetry significantly
different. ao_telemetry_tiny.c sends the required data.

Note that TeleNano sends the same telemetry as telemini at this point;
there are a couple of values which are not useful, but the overhead of
sending them is small enough that the hassle of having three telemetry
formats seemed excessive.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/ao.h b/src/ao.h
index 075ec63a..0ba98dbd 100644
--- a/src/ao.h
+++ b/src/ao.h
@@ -925,6 +925,18 @@ struct ao_telemetry {
 	struct ao_gps_tracking_data	gps_tracking;
 };
 
+struct ao_telemetry_tiny {
+	uint16_t		serial;
+	uint16_t		flight;
+	uint8_t			flight_state;
+	int16_t			height;		/* AGL in meters */
+	int16_t			speed;		/* in m/s * 16 */
+	int16_t			accel;		/* in m/s² * 16 */
+	int16_t			ground_pres;	/* sensor units */
+	struct ao_adc		adc;		/* raw ADC readings */
+	char			callsign[AO_MAX_CALLSIGN];
+};
+
 /*
  * ao_radio_recv tacks on rssi and status bytes
  */
@@ -934,6 +946,12 @@ struct ao_telemetry_recv {
 	uint8_t			status;
 };
 
+struct ao_telemetry_tiny_recv {
+	struct ao_telemetry_tiny	telemetry_tiny;
+	int8_t				rssi;
+	uint8_t				status;
+};
+
 /* Set delay between telemetry reports (0 to disable) */
 
 #define AO_TELEMETRY_INTERVAL_PAD	AO_MS_TO_TICKS(1000)
@@ -949,6 +967,9 @@ ao_rdf_set(uint8_t rdf);
 void
 ao_telemetry_init(void);
 
+void
+ao_telemetry_tiny_init(void);
+
 /*
  * ao_radio.c
  */