Documentation for running this on Raspberry pi

[EricPHassey]

I didn't see any documentation as to how to compile this for a RP. New at this stuff, my apologies. Would love to try it.

[jfdelnero]

the "make" command should be enough to build it.

[EricPHassey]

My apologies @jfdelnero . I've clarified the title better.

I'm looking to use/run this on a raspberry pi 4b.

1. I have successfully built this with debug mode using the make command
2. I have copied the file in conf/umtprd.conf to /etc/umtprd/umtprd.conf
3. I have uncommented the lines in umtprd.conf where it says "GadgetFS Mode : Raspberry PI Zero/..."
4. When I try running in conf the following files (umtprd-ffs.sh, umtprd_gfs.sh), I either get an error saying it's been mounted or it just sits there and hangs (I've waited a few minutes and nothing happened)

At this point my questions are: A. What have I done wrong above to not succeed in running this B. What do I need to do C. What is the difference between umtprd-ffs.sh and umtprd_gfs? Is one better than the other for a PI?

Thanks :)

[jfdelnero]

umtprd-ffs.sh is for the FunctionFS mode. Since you choose to run it in GadgetFS, don't run this script.

umtprd_gfs.sh : If the all the needed stuff started successfully and the GadgetFS driver is running then uMTP is just waiting for a connection. Have you connected the device port to a PC ? Can you share the logs ?

C. What is the difference between umtprd-ffs.sh and umtprd_gfs? Is one better than the other for a PI?

umtprd-ffs.sh : FunctionFS mode : The device usb port can be shared with others functions. Example : uMTP and a virtual serial port or any other USB device type.

umtprd-gfs.sh : GadgetFS mode - only one USB function at a time (here uMTP). Probably easier to setup for a first try.

[EricPHassey]

Thank you @jfdelnero I should clarify that for whatever reason...I haven't been able to get either one to work.

I'm connecting my PI to usb-c for both connectivity and power. So it's connected and delivering power. Using mass storage I don't get any problems connecting.

sudo ./umtprd_gfs.sh mkdir: cannot create directory ‘/dev/gadget’: File exists mount: /dev/gadget: gadgetfs already mounted on /dev/gadget. this just hangs as it's looking to do something.

If I unmount /dev/gadget and do the following, I get:

sudo ./umtprd_gfs.sh mkdir: cannot create directory ‘/dev/gadget’: File exists User defined signal 1

Once again this just hangs as well.

Where am I messing up?

[EricPHassey]

Just built again without debug and got the following error message when running sudo ./umtprd_gfs.sh

Looks like the problem is this: Unable to open /dev/gadget/20980000.usb (No such file or directory) I don't have that file in that directory, but I do have fe980000.usb.

[uMTPrd - 06:04:08 - Info] uMTP Responder [uMTPrd - 06:04:08 - Info] Version: v1.3.10 compiled the Nov 30 2020@06:02:54 [uMTPrd - 06:04:08 - Info] (c) 2018 - 2020 Viveris Technologies [uMTPrd - 06:04:08 - Info] Add storage root folder - Root Path: / - Flags: 0x00000000 [uMTPrd - 06:04:08 - Info] Add storage home folder - Root Path: /home - Flags: 0x00000001 [uMTPrd - 06:04:08 - Info] Add storage www folder - Root Path: /www - Flags: 0x00000003 [uMTPrd - 06:04:08 - Info] USB Device path : /dev/gadget/20980000.usb [uMTPrd - 06:04:08 - Info] USB In End point path : /dev/gadget/ep1in [uMTPrd - 06:04:08 - Info] USB Out End point path : /dev/gadget/ep2out [uMTPrd - 06:04:08 - Info] USB Event End point path : /dev/gadget/ep3in [uMTPrd - 06:04:08 - Info] USB Max packet size : 0x200 bytes [uMTPrd - 06:04:08 - Info] USB Max write buffer size : 0x2000 bytes [uMTPrd - 06:04:08 - Info] USB Max read buffer size : 0x2000 bytes [uMTPrd - 06:04:08 - Info] Read file buffer size : 0x100000 bytes [uMTPrd - 06:04:08 - Info] Manufacturer string : Viveris Technologies [uMTPrd - 06:04:08 - Info] Product string : Viveris Technologies [uMTPrd - 06:04:08 - Info] Serial string : 01234567 [uMTPrd - 06:04:08 - Info] Firmware Version string : Rev A [uMTPrd - 06:04:08 - Info] Interface string : MTP [uMTPrd - 06:04:08 - Info] USB Vendor ID : 0x1D6B [uMTPrd - 06:04:08 - Info] USB Product ID : 0x0100 [uMTPrd - 06:04:08 - Info] USB class ID : 0x06 [uMTPrd - 06:04:08 - Info] USB subclass ID : 0x01 [uMTPrd - 06:04:08 - Info] USB Protocol ID : 0x01 [uMTPrd - 06:04:08 - Info] USB Device version : 0x3008 [uMTPrd - 06:04:08 - Info] USB GadgetFS Mode [uMTPrd - 06:04:08 - Info] Wait for connection : 0 [uMTPrd - 06:04:08 - Info] Loop on disconnect : 0 [uMTPrd - 06:04:08 - Info] Show hidden files : 1 [uMTPrd - 06:04:08 - Info] File creation umask : System default umask [uMTPrd - 06:04:08 - Info] inotify : yes [uMTPrd - 06:04:08 - Error] init_usb_mtp_gadget : Unable to open /dev/gadget/20980000.usb (No such file or directory) [uMTPrd - 06:04:08 - Error] init_usb_mtp_gadget init error ! [uMTPrd - 06:04:08 - Error] USB Init failed ! [uMTPrd - 06:04:08 - Info] uMTP Responder : Disconnected [uMTPrd - 06:04:08 - Error] Error : Couldn't run the main thread... (-2)

[EricPHassey]

I was able to solve this problem. I'm using the Rasberry Pi 4 which appears to not have the 20980000.usb instead I changed it in the config file to the fe980000.usb. In addition, I'm using a Mac which apparently doesn't have support for it, however using Windows it recognized it.