int[] bytes;
/* All telemetry packets have these fields */
- public int rssi() { return AltosConvert.telem_to_rssi(AltosLib.int8(bytes, bytes.length - 3)); }
- public int status() { return AltosLib.uint8(bytes, bytes.length - 2); }
+ static public int rssi(int[] bytes) { return AltosConvert.telem_to_rssi(AltosLib.int8(bytes, bytes.length - 3)); }
+ static public int status(int[] bytes) { return AltosLib.uint8(bytes, bytes.length - 2); }
+
+ public int rssi() { return rssi(bytes); }
+ public int status() { return status(bytes); }
/* All telemetry packets report these fields in some form */
public abstract int serial();
/* Mark when we received the packet */
long received_time;
+ /* Mark frequency packet was received on */
+ public double frequency = AltosLib.MISSING;
+
static boolean cksum(int[] bytes) {
int sum = 0x5a;
for (int i = 1; i < bytes.length - 1; i++)
public void provide_data(AltosDataListener listener) {
listener.set_serial(serial());
- if (listener.state == AltosLib.ao_flight_invalid)
+ if (listener.state() == AltosLib.ao_flight_invalid)
listener.set_state(AltosLib.ao_flight_startup);
+ if (frequency != AltosLib.MISSING)
+ listener.set_frequency(frequency);
listener.set_tick(tick());
listener.set_rssi(rssi(), status());
listener.set_received_time(received_time);
if (!cksum(bytes))
throw new ParseException(String.format("invalid line \"%s\"", hex), 0);
+ if ((status(bytes) & PKT_APPEND_STATUS_1_CRC_OK) == 0)
+ throw new AltosCRCException(rssi(bytes));
+
/* length, data ..., rssi, status, checksum -- 4 bytes extra */
switch (bytes.length) {
case AltosLib.ao_telemetry_standard_len + 4:
return telem;
}
+ public void set_frequency(double frequency) {
+ this.frequency = frequency;
+ }
+
public AltosTelemetry() {
this.received_time = System.currentTimeMillis();
}