An mtp responder written in python.

Uses configfs and functionfs.

Should now be fully functional.

Note

How to set up a Raspberry Pi Zero to run it:

1. Create a regular Raspbian Lite SD card.

2. Touch /boot/ssh to enable ssh.

3. Edit config.txt and add this line to enable USB device mode:

   dtoverlay=dwc2
   

4. Edit /etc/modules and add this line to enable USB composite driver:

   libcomposite
   

5. Load the module manually one time (it will load automatically after a reboot):

   sudo modprobe libcomposite
   

6. Plug the Raspberry Pi into your PC.

How to set up a PC to run it in loopback mode:

1. Kernel must have libcomposite and dummy_hcd.

   dummy_hcd is not available in Ubuntu. You can build it yourself using DKMS by following these steps:

   https://serianox.github.io/gadgetfs-ubuntu.html

   On Ubuntu 16.04 you need linux 4.4.0-100 or later to fix a bug when removing the gadget. Without the patch the kernel will crash.

   After you built and installed dummy_hcd, add to /etc/modules:

   dummy_hcd
   libcomposite
   

2. Load the modules manually one time (they will load automatically after a reboot):

   sudo modprobe dummy_hcd
   sudo modprobe libcomposite
   

How to install it:

pip3 install .

How to run it:

sudo ./pymtpd --udc <UDC>

UDC should be dummy_udc.0 if you are running on a PC, or 20980000.usb if running on a Raspberry Pi Zero.

It shares the contents of /tmp/mtp (which will be created on start up.)

How to use it:

Open up a file manager and you should see an MTP (media player) device.