Can't use VCP+HID mode

[nedkonz]

I have a Pyboard v1.1 and have loaded firmware v1.17.
When I do this:

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>>> import pyb
>>> pyb.usb_mode()
'VCP+MSC'
>>> pyb.usb_mode('VCP+HID')
>>> pyb.usb_mode()
'VCP+MSC'

I see that the usb mode has not changed.
Am I missing something obvious?
Should this work?
I have also tried this code in boot.py.
Thanks!

[dhylands]

You need to change usb_mode in boot.py. Changing it in main.py or later (like in the REPL) has no effect.

[nedkonz]

You need to change usb_mode in boot.py. Changing it in main.py or later (like in the REPL) has no effect.

I've done this and it doesn't work. Here's my boot.py:

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# boot.py -- run on boot-up
import pyb
pyb.country('US') # ISO 3166-1 Alpha-2 code, eg US, GB, DE, AU
#pyb.main('main.py') # main script to run after this oneice
pyb.usb_mode('VCP+HID') # act as a serial device and a mouse

[dhylands]

That worked for me. I had to unplug and replug the Pyboard. I happen to be running 1.15:

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MicroPython v1.15-126-g29718221d-dirty on 2021-05-18; PYBv1.1 with STM32F405RG
Type "help()" for more information.
>>> pyb.usb_mode()
'VCP+HID'
>>> 

I get the same results on 1.17:

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MicroPython v1.17-123-g7f1434442 on 2021-12-16; PYBv1.1 with STM32F405RG
Type "help()" for more information.
>>> 
>>> pyb.usb_mode()
'VCP+HID'
>>> 

[nedkonz]

Thanks!

I figured out what happened: I had a blank micro SD card installed, and therefore my /flash/boot.py wasn't being loaded.

Now to figure out how to set up the descriptor for a joystick...

[dhylands]

This may have some clues for you: viewtopic.php?f=2&t=7170&p=40980#p40755

[nedkonz]

Thanks.

I just made a simple 3-axis (X,Y,Z) joystick emulator. Here's my code in boot.py:

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# simple joystick with 8-bit x,y,z
pyb.usb_mode('VCP+HID', hid=(1, 2, 3, 8, bytes([0x05, 0x01, 0x09, 0x04, 0xa1, 0x01, 0x09, 0x01, 0xa1, 0x00, 0x09, 0x30, 0x09, 0x31, 0x09, 0x32, 0x25, 0x7f, 0x15, 0x81, 0x75, 0x08, 0x95, 0x03, 0x81, 0x02, 0xc0, 0xc0])))

# Send joystick report. Values are -127 to +127.
# hid = pyb.USB_HID()
# hid.send((x, y, z))

I see the three axis values in Linux; haven't bothered to test it in Windows.