CANbus for Ardupilot with UAVCAN and UC4H

ppoirier · January 26, 2019, 8:59pm

Yep did this test before, I do it again to prove that when I remove olliw subdirectory

I confirm that the file is exactly like this one:

olliw42/uavcan4hobbyists/blob/master/dsdl-stuff/dsdl/olliw/uc4h/28310.GenericBatteryInfo.uavcan

#
# Generic battery info.
#

uint16 battery_id

float16 voltage
float16 current
float16 charge_consumed_mAh
float16 energy_consumed_Wh

uint8 STATUS_FLAG_ERROR_OVERVOLTAGE  = 1
uint8 STATUS_FLAG_ERROR_UNDERVOLTAGE = 2
uint8 STATUS_FLAG_ERROR_OVERCURRENT  = 4
uint8 STATUS_FLAG_ERROR_UNDERCURRENT = 8
uint8 status_flags

float16[<=12] cell_voltages

Its like there is some data missing in the PayLoad , does the Node need a special configuration ?

olliw42 · January 26, 2019, 9:10pm

have you put the dsdl in the correct subfolder?
the sequence of folders must be identical to that in the repo

EDIT: just checked your gui screenshot in the above again, and it seems you have placed it into the power.equipment subfolder, which would be incorrect

ppoirier · January 26, 2019, 9:18pm

Well that was according to your instructions ?

They thus need to be made aware to the tool by copying the message definition files to a particular folder: Move the folder „olliw“ with the .uavcan dsdl definition files to the folder „C:\Program Files (x86)\UAVCAN\UAVCAN GUI Tool\uavcan\dsdl_files\uavcan\equipment\power“. Now, after a restart, the UAVCAN GUI tool should show the new messages in e.g. the bus monitor, and not display „unknown“.

olliw42 · January 26, 2019, 9:26pm

oh sh…
this was so for the first version of the messages, but I have placed them in my “own” uavcan.olliw vendor specific section since quite a while, it seems I have updated the messages but have forgotten to correct the subfolder
I’m very sorry

the sequence of folders should match the sequence in the dsdl name, e.g. uavcan.olliw.uc4h.GenericBatteryInfo => uavcan/olliw/uc4h/28310.GenericBatteryInfo.uavcan

ppoirier · January 26, 2019, 9:27pm

No problem…
Right Place

Right Data == Showing a 3S connected to a 4 Ohms 50 Watt Dummy Load with a disconnect-reconnect sequence test

@olliw42 Thanks, and please update the wiki

olliw42 · January 26, 2019, 9:33pm

the sequence of folders should match the sequence in the dsdl name, e.g. uavcan.olliw.uc4h.GenericBatteryInfo => uavcan/olliw/uc4h/28310.GenericBatteryInfo.uavcan

so, the olliw folder should go up two folders, to a subfolder of uavcan

olliw42 · January 26, 2019, 10:17pm

Thanks

thx for your patience, I should have noticed this earlier from the screen shot

and please update the wiki

already done

olliw42 · January 26, 2019, 10:31pm

btw, if you happen to have a FrSky lipo multi cell voltage sensor, you also could use the cell voltage feature: For your v1.1 powerbrick, you would connect it to Gnd and Tx on the UART pin header, and would grab power from a C5V pin, e.g. on the CAN port pin header

makeflyeasy · August 9, 2019, 7:06am

Hello!I am very glad to see such an excellent UAVCAN module. I am a fixed wing player. Do you have any instructions and cases to use on fixed wings?