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imfatant
Readme Mistake?
sudo sed -i 's|#dtb_overlay=/lib/firmware/
Did you really mean to commit out the UART4 and ADC overlays? note the # in the sed command in the readme instructions
Yes, I did. I'm trying to remember the reason. I think it was because enabling them stopped something else working.. Now, if only I could remember.
I wonder if this is why my Battery is not detected. I will comment out the ADC and see if that makes the battery voltage detection work. I am also struggling with the Spectrum DSMX receiver on the DSM port of the Beagle Bone Blue. If I load 3.6 Srducopter DSM works in 4.0 no DSM if I load 3.6 then 4.0 I get DSM.
Commenting them back out had no effect on DSM or Battery on BeagleBone Blue and Ardupilot V4.0.3rc1
Do you know if you can use the DSM labled port on the Beagle Bone Blue. Reading this https://github.com/ArduPilot/ardupilot/issues/6641 and looking at https://github.com/ArduPilot/ardupilot/blob/05a0fe615b50fc2fa8dba11e541ba4f5740a1181/libraries/AP_HAL_Linux/HAL_Linux_Class.cpp
static RCInput_Multi rcinDriver{2, new RCInput_AioPRU, new RCInput_RCProtocol(NULL, "/dev/ttyO4")};
So it looks like DSM serial port 4 is used.
I see SBUS FD -1 115200 FD -1 written to the console
https://github.com/ArduPilot/ardupilot/blob/a153799e261de0fcc0008730e0f755e367f87d60/libraries/AP_HAL_Linux/RCInput_RCProtocol.cpp line 126
printf("SBUS FD %d 115200 FD %d\n", fd_inverted, fd_115200);
So not sure why no Spektrum DSM2 being detected with v 4.0
so issue seems to be that on bone versions of kernel /dev/ttyO4 is not avalible but on ti versions of kernel it is, next comes the issue of the a bug in the kernels so latest 19_ti kernel crashes. RobertCNelson did fix 19_bone kernel so it now works but no /dev/tty09 kernel. I am able to run 9_ti kernel but now I get a bunch of DSM_DECODE_STATE_DESYNC messages and no DSM input.