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Documentation: usb: ACM function testing

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

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz 2014-12-16 14:56:25 +01:00 committed by Felipe Balbi
parent b797ef4e16
commit e38eb2c8cb
1 changed files with 34 additions and 0 deletions
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Documentation/usb/gadget-testing.txt Normal file
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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>