Questions tagged [functionfs]
5 questions
2
votes
1 answer
How to extend the BOS descriptor in FunctionFS?
I'm trying to implement a simple WebUSB device on a Raspberry Pi 4. I've created a Linux USB Gadget for this purpose with a FunctionFS function. Currently I've taken the usb/ffs-test.c example from the Linux kernel as a basis.
According to this…
Tom
- 21
- 1
1
vote
1 answer
"Function not implemented" error with ConfigFS on Android
I'm trying to pair a rooted Android device with a PlayStation 4 (or 5) so that I can play around with the Bluetooth HID Profile. The problem is that the PlayStation firmware doesn't like to pair with unauthorised devices. I've seen that someone was…
Andy E
- 338,112
- 86
- 474
- 445
1
vote
1 answer
FunctionFS stalls endpoint when alternate setting is activated with SET_INTERFACE. Any idea why?
I'm trying to create a Gadget using FunctionFS and the FS driver. My gadget is composed of two functions with the following configurations:
Function 1:
Interface 0:
Endpoint BULK OUT 0x01
Endpoint BULK IN 0x81
Function 2:
Interface 0…
Julien
- 21
- 3
0
votes
0 answers
How to get Linux FunctionFS USB Gadget to register as WINUSB Device on Windows 10?
I have a BeagleBone Blue that I'm attempting to build into a small USB device that I'll communicate with on my Windows machine.
I've got a shell script that I run on boot up that configures the FunctionFS gadget.
#!/bin/bash
sudo modprobe…
Ken
- 1
0
votes
0 answers
Reading data from usb using ffs
I’m facing a problem where I’m unable to reliably read data from my usb endpoints. My ffs defines the following eps:
Ep0 = control
Ep1 = in
Ep2 = out
I have a simple ::read() call that is blocked on int fd = ::open(ep1, O_RDONLY). Problem is that…
igal k
- 1,883
- 2
- 28
- 57