From e38eb2c8cb435729579576b2b5bc5247ebcd6f5b Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Tue, 16 Dec 2014 14:56:25 +0100 Subject: [PATCH] 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: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- Documentation/usb/gadget-testing.txt | 34 ++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 Documentation/usb/gadget-testing.txt diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt new file mode 100644 index 000000000000..2a448f812f0e --- /dev/null +++ b/Documentation/usb/gadget-testing.txt @@ -0,0 +1,34 @@ +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 +On the device : cat /dev/ttyGS + +then the other way round + +On the device: cat > /dev/ttyGS +On the host: cat /dev/ttyACM -- 2.39.5