Use in Linux

[void-spark]

Any idea if this firmware works in Linux?
Would it also need a custom avrdude that supports composite devices or something similar?
Any special options that would be needed, like a specific -P ?
If not, any suggestions for a branch which does work under Linux? :)

[dioannidis]

Hi @void-spark,

Any idea if this firmware works in Linux?

yes it works . At least in distros who support USB 2.0 BOS descriptors .

i.e. see Debian Buster and up ( running in VM ):

Would it also need a custom avrdude that supports composite devices or something similar?

AFAIK, avrdude in linux uses libusb which supports composite devices, so no there is no need .

i.e. Arduino IDE 1.8.3 Debian Bullseye uploading the ASCII Table sketch using USBasp as the progammer :

Any special options that would be needed, like a specific -P ?

Nope, just the usual -c usbasp .

Also there is a linux x86_64 version of the USBaspHIDUART console utility which at least runs in Debian :

i.e.

and an example of reading the output of the ASCII Table sketch using USBaspHIDUART :

regards,

[void-spark]

Yep, been able to test now, it works! (at least the programming part).
I made it a bit more difficult for myself by running avrdude from a docker container, but --privileged helped with that :)

I guess the uart part is not a standard hid 'profile(?)', so it always needs a custom program that uses usblib to talk with it?
Just out of interest, I have so many usb to serial converters, so don't need it much :)

[dioannidis]

Hi,

I guess the uart part is not a standard hid 'profile(?)', so it always needs a custom program that uses usblib to talk with it?

A serial HID profile doesn't exists AFAIK ... So yes, you need a software that implements the uart HID protocol to talk to the USBasp uart which talks to the target mcu uart.

The USBaspHIDUART console utility has implement this protocol and can be used for simple stuff .

regards,