Any way to disable external barometer?

ArduPlane Plane 4.1
1

Hi, I have a gps/mag that also happens to have barometer - all of this is on (1) UART MSP connection - and the sensor is on top of the craft, open to the wind. Admittedly, I just realized that this sensor has a baro and have had several flights so far with no issue because, luckily, Ardupilot considers the FC baro as the primary. To add to that, I conformal coated over the entire sensor when I thought it was just a gps/mag.

I started to realize the issue when exporting my logs to Dashware and noticed the altimeter guage bouncing around like a drunk sailor. My csv log export shows two separate baro entry lines sequentially, one for each baro and they are wildly apart in readings - for obvious reasons.

I can figure out how to ignore the second baro in my log exports, but I’m nervous that Aruplane will, at some point, under some circumstance, use the second/external baro reading and drive the plane into the ground. Any way to tell Arduplane to ignore or disable it?

Cheers!

Edit: Corrected the connection type to MSP.

2

What kind of flight controller are you using. Normally external i2c buses are not probed for barometers. (BARO_EXT_BUS is -1).

3

Apologies, its a " Matek M8Q-CAN GPS Module w/ Compass, Barometer & UAVCAN" using UART MSP (I’ll correct the OP). So I’m looking to disable the secondary baro on MSP without disabling the GPS and mag on the same MSP port.

4

Use it via CANBus. Then you can connect to it in Mission Planner via SLCan and set the AP_Periph (Which runs on the module) parameter BARO_DISABLE to 0.

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5

Ok. Thanks for the help.

6

Success. Thanks again. Technically it is BARO_ENABLE to 0.

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