sdlog2: added 'signal_lost' logging

src/modules/sdlog2/sdlog2.c

@@ -1176,6 +1176,7 @@ int sdlog2_thread_main(int argc, char *argv[])
 			/* Copy only the first 8 channels of 14 */
 			memcpy(log_msg.body.log_RC.channel, buf.rc.chan, sizeof(log_msg.body.log_RC.channel));
 			log_msg.body.log_RC.channel_count = buf.rc.chan_count;
+			log_msg.body.log_RC.signal_lost = buf.rc.signal_lost;
 			LOGBUFFER_WRITE_AND_COUNT(RC);
 		}
 

src/modules/sdlog2/sdlog2_messages.h

@@ -161,6 +161,7 @@ struct log_STAT_s {
 struct log_RC_s {
 	float channel[8];
 	uint8_t channel_count;
+	uint8_t signal_lost;
 };
 
 /* --- OUT0 - ACTUATOR_0 OUTPUT --- */
@@ -323,7 +324,7 @@ static const struct log_format_s log_formats[] = {
 	LOG_FORMAT(GPS, "QBffLLfffff", "GPSTime,FixType,EPH,EPV,Lat,Lon,Alt,VelN,VelE,VelD,Cog"),
 	LOG_FORMAT(ATTC, "ffff", "Roll,Pitch,Yaw,Thrust"),
 	LOG_FORMAT(STAT, "BBfBB", "MainState,ArmState,BatRem,BatWarn,Landed"),
-	LOG_FORMAT(RC, "ffffffffB", "Ch0,Ch1,Ch2,Ch3,Ch4,Ch5,Ch6,Ch7,Count"),
+	LOG_FORMAT(RC, "ffffffffBB", "Ch0,Ch1,Ch2,Ch3,Ch4,Ch5,Ch6,Ch7,Count,SignalLost"),
 	LOG_FORMAT(OUT0, "ffffffff", "Out0,Out1,Out2,Out3,Out4,Out5,Out6,Out7"),
 	LOG_FORMAT(AIRS, "ff", "IndSpeed,TrueSpeed"),
 	LOG_FORMAT(ARSP, "fff", "RollRateSP,PitchRateSP,YawRateSP"),