@ Eric-Katzfey We are trying to expose the USB ports on the MH Carrier board, and I understand that this is solved in V1.0.1. Two questions: Is this stable enough for us to use a pre-release for testing? If so, how can we get the SDK to flash? If no to #1, but the code for the MH carrier is ready, is it possible for us to update the 1.0 SDK we are running? As I understand it, it would be a combination of kernel update and source code update for the carrier board. Thanks Jason

@ modaltb Yes absolutely. In fact, I think some simple code update to voxl-mavlink-server would solve this. Essentially, we know the following: It seems the ModalAI FC will ALWAYS be ttyACM0 when plugged into the MH Carrier board. At least this was true in all of our tests. We know that ttyACM0 shows up in dmesg -w really fast on boot, well before the MH Radio even gets ttyACM1 (Not sure why that is...) We have found that VOXL will hold the ttyHSx file in /dev even when the device is not connected and this cannot exist before enabling the UDEV rule or mavlink-server will think the UART is in use. So there needs to be some smart checking to ensure whatever value you have in the conf file DOESN'T exist BEFORE starting the udev rules AND before starting mavlink-server. Create a file... sudo nano /etc/udev/rules.d/99-usb-serial.rules Put this in it for the ModalAI FC detected on the MH Radio USB carrier board SUBSYSTEM=="tty", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="a330", SYMLINK+="ttyHS9" Save the file and chmod +x to ensure access Refresh UDEV with below to enable it sudo udevadm control --reload-rules sudo udevadm trigger In my case I chose ttyHS9. I have been experimenting with a script/service as a workaround, but ideally the above would be programmed into mavlink-server itself to allow access to the FC over USB and not a UART, and even better over the MH Radio USB.

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SDK V1.0.1 Beta

Unsolved VOXL 2 and VOXL 2 Mini

21 Posts 5 Posters 6.8k Views 3 Watching

M modaltb

@Mastermind thank you so much for documenting this, we are going give this a go and get it into our docs! Thanks for spending the time (and sticking up for us in the other post )
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#21

@modaltb Support is hard! I am not sure I could do it.
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