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Commit e38eb2c8 authored by Andrzej Pietrasiewicz's avatar Andrzej Pietrasiewicz Committed by Felipe Balbi
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Documentation: usb: ACM function testing 



The newly added file will be used to provide descriptions of how to test
the functions of USB gadgets.

Signed-off-by: default avatarAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent b797ef4e

Documentation/usb/gadget-testing.txt

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This file summarizes information on basic testing of USB functions

provided by gadgets.



1. ACM function





1. ACM function

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



The function is provided by usb_f_acm.ko module.



Function-specific configfs interface

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



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

The ACM 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 ACM function

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



On the host: cat > /dev/ttyACM<X>

On the device : cat /dev/ttyGS<Y>



then the other way round



On the device: cat > /dev/ttyGS<Y>

On the host: cat /dev/ttyACM<X>