Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4dfcec8a authored by Andrzej Pietrasiewicz's avatar Andrzej Pietrasiewicz Committed by Felipe Balbi
Browse files

Documentation: usb: SERIAL function testing 



Summary of how to test SERIAL function of USB gadget.

Signed-off-by: default avatarAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent ddb72244

Documentation/usb/gadget-testing.txt

+31 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ provided by gadgets. 
11. OBEX function

12. PHONET function

13. RNDIS function

14. SERIAL function





1. ACM function
@@ -529,3 +530,33 @@ Configure IP addresses of the device and the host. Then: 


On the device: ping <host's IP>

On the host: ping <device's IP>



14. SERIAL function

===================



The function is provided by usb_f_gser.ko module.



Function-specific configfs interface

------------------------------------



The function name to use when creating the function directory is "gser".

The SERIAL function provides just one attribute in its function directory:



	port_num



The attribute is read-only.



There can be at most 4 ACM/generic serial/OBEX ports in the system.



Testing the SERIAL function

---------------------------



On host: insmod usbserial

	 echo VID PID >/sys/bus/usb-serial/drivers/generic/new_id

On host: cat > /dev/ttyUSB<X>

On target: cat /dev/ttyGS<Y>



then the other way round



On target: cat > /dev/ttyGS<Y>

On host: cat /dev/ttyUSB<X>