usb.c
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/****************************************************************************
*
* Copyright (C) 2016, 2018 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/**
* @file usb.c
*
* Board-specific USB functions.
*/
/************************************************************************************
* Included Files
************************************************************************************/
#include <px4_platform_common/px4_config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <debug.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbdev_trace.h>
#include <arm_arch.h>
#include <kinetis.h>
#include <kinetis_usbotg.h>
#include "board_config.h"
/************************************************************************************
* Definitions
************************************************************************************/
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: kinetis_usbpullup
*
* Description:
* If USB is supported and the board supports a pullup via GPIO (for USB software
* connect and disconnect), then the board software must provide kinetis_usbpullup.
* See include/nuttx/usb/usbdev.h for additional description of this method.
* Alternatively, if no pull-up GPIO the following EXTERN can be redefined to be
* NULL.
*
************************************************************************************/
__EXPORT
int kinetis_usbpullup(FAR struct usbdev_s *dev, bool enable)
{
usbtrace(TRACE_DEVPULLUP, (uint16_t)enable);
if (enable) {
putreg8(USB_CONTROL_DPPULLUPNONOTG, KINETIS_USB0_CONTROL);
} else {
putreg8(0, KINETIS_USB0_CONTROL);
}
return OK;
}
/************************************************************************************
* Name: kinetis_usbsuspend
*
* Description:
* Board logic must provide the kinetis_usbsuspend logic if the USBDEV driver is
* used. This function is called whenever the USB enters or leaves suspend mode.
* This is an opportunity for the board logic to shutdown clocks, power, etc.
* while the USB is suspended.
*
************************************************************************************/
__EXPORT
void kinetis_usbsuspend(FAR struct usbdev_s *dev, bool resume)
{
uinfo("resume: %d\n", resume);
}