Merge remote-tracking branch 'upstream/master'

src/drivers/ets_airspeed/ets_airspeed.cpp

@@ -84,8 +84,9 @@
 
 /**
  * The Eagle Tree Airspeed V3 cannot provide accurate reading below speeds of 15km/h.
+ * You can set this value to 12 if you want a zero reading below 15km/h.
  */
-#define MIN_ACCURATE_DIFF_PRES_PA 12
+#define MIN_ACCURATE_DIFF_PRES_PA 0
 
 /* Measurement rate is 100Hz */
 #define CONVERSION_INTERVAL	(1000000 / 100)	/* microseconds */
@@ -463,8 +464,8 @@ ETSAirspeed::collect()
 
 	uint16_t diff_pres_pa = val[1] << 8 | val[0];
 
+	// XXX move the parameter read out of the driver.
 	param_get(param_find("SENS_DPRES_OFF"), &_diff_pres_offset);
-
 	if (diff_pres_pa < _diff_pres_offset + MIN_ACCURATE_DIFF_PRES_PA) {
 		diff_pres_pa = 0;
 

src/drivers/hott_telemetry/messages.c

@@ -108,7 +108,7 @@ build_eam_response(uint8_t *buffer, size_t *size)
 	memset(&airspeed, 0, sizeof(airspeed));
 	orb_copy(ORB_ID(airspeed), airspeed_sub, &airspeed);
 
-	uint16_t speed = (uint16_t)(airspeed.indicated_airspeed_m_s);
+	uint16_t speed = (uint16_t)(airspeed.indicated_airspeed_m_s * 3.6f);
 	msg.speed_L = (uint8_t)speed & 0xff;
 	msg.speed_H = (uint8_t)(speed >> 8) & 0xff;