Commit 25b0212f authored by Johann Fischer's avatar Johann Fischer Committed by Kumar Gala
Browse files

subsys: usb: class: add loopback function 



Add loopback function. This function can be used to test
USB device drivers and device stack connected to linux host
and has the similar interface as "Gadget Zero" [1] of the Linux
kernel.

Use modprobe usbtest to load the module, see also [2] for the
description of the tests and for Vendor and Product ID of the
"Gadget Zero". The userspace tool testusb [3] is needed to start
the tests.

[1] linux/drivers/usb/gadget/function/f_loopback.c
[2] linux/drivers/usb/misc/usbtest.c
[3] linux/tools/usb/testusb.c

Signed-off-by: default avatarJohann Fischer <j.fischer@phytec.de>
parent 3a471e32

samples/subsys/usb/testusb/CMakeLists.txt

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include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)

project(NONE)



FILE(GLOB app_sources src/*.c)

target_sources(app PRIVATE ${app_sources})

samples/subsys/usb/testusb/prj.conf

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CONFIG_STDOUT_CONSOLE=y

CONFIG_SYS_LOG=y

CONFIG_SYS_LOG_DEFAULT_LEVEL=1



#USB related configs

CONFIG_USB=y

CONFIG_USB_DEVICE_STACK=y

CONFIG_USB_DEVICE_PRODUCT="Zephyr testusb sample"

CONFIG_SYS_LOG_USB_DRIVER_LEVEL=1

CONFIG_USB_DEVICE_LOOPBACK=y

CONFIG_SYS_LOG_USB_DEVICE_LEVEL=1

samples/subsys/usb/testusb/sample.yaml

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sample:

  name: USB loopback sample

tests:

  usb.loopback:

    depends_on: usb_device

    tags: usb

samples/subsys/usb/testusb/src/main.c

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/*

 * Copyright (c) 2018 Phytec Messtechnik GmbH

 *

 * SPDX-License-Identifier: Apache-2.0

 */



#include <zephyr.h>

#include <logging/sys_log.h>



void main(void)

{

	SYS_LOG_INF("");

}

subsys/usb/class/CMakeLists.txt

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@@ -4,6 +4,7 @@ zephyr_sources_ifdef(CONFIG_USB_CDC_ACM cdc_acm.c) 
zephyr_sources_ifdef(CONFIG_USB_MASS_STORAGE mass_storage.c)

zephyr_sources_ifdef(CONFIG_USB_DEVICE_BLUETOOTH bluetooth.c)

zephyr_sources_ifdef(CONFIG_USB_DFU_CLASS usb_dfu.c)

zephyr_sources_ifdef(CONFIG_USB_DEVICE_LOOPBACK loopback.c)



add_subdirectory_ifdef(CONFIG_USB_DEVICE_NETWORK netusb)

add_subdirectory_ifdef(CONFIG_USB_DEVICE_HID hid)

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