mirror of
https://gitee.com/mirrors_PX4/PX4-Autopilot.git
synced 2026-10-03 08:38:53 +08:00
134 lines
5.0 KiB
C
134 lines
5.0 KiB
C
/****************************************************************************
|
|
*
|
|
* Copyright (C) 2024 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_internal.h>
|
|
#include <chip.h>
|
|
#include <hardware/imxrt_usb_analog.h>
|
|
#include "board_config.h"
|
|
#include "imxrt_periphclks.h"
|
|
|
|
/************************************************************************************
|
|
* Definitions
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Private Functions
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Public Functions
|
|
************************************************************************************/
|
|
int imxrt_usb_initialize(void)
|
|
{
|
|
imxrt_clockall_usboh3();
|
|
|
|
// We abuse VBUS2 to check if system power checks VBUS gets below 4.7V
|
|
putreg32(USB_ANALOG_USB_VBUS_DETECT_VBUSVALID_THRESH_4V7 | USB_ANALOG_USB_VBUS_DETECT_VBUSVALID_PWRUP_CMPS,
|
|
IMXRT_USB_ANALOG_USB2_VBUS_DETECT);
|
|
return 0;
|
|
}
|
|
/************************************************************************************
|
|
* Name: imxrt_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 imxrt_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 imxrt_usbpullup(FAR struct usbdev_s *dev, bool enable)
|
|
{
|
|
usbtrace(TRACE_DEVPULLUP, (uint16_t)enable);
|
|
|
|
return OK;
|
|
}
|
|
|
|
/************************************************************************************
|
|
* Name: imxrt_usbsuspend
|
|
*
|
|
* Description:
|
|
* Board logic must provide the imxrt_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 imxrt_usbsuspend(FAR struct usbdev_s *dev, bool resume)
|
|
{
|
|
uinfo("resume: %d\n", resume);
|
|
}
|
|
|
|
/************************************************************************************
|
|
* Name: board_read_VBUS_state
|
|
*
|
|
* Description:
|
|
* All boards must provide a way to read the state of VBUS, this my be simple
|
|
* digital input on a GPIO. Or something more complicated like a Analong input
|
|
* or reading a bit from a USB controller register.
|
|
*
|
|
* Returns - 0 if connected.
|
|
*
|
|
************************************************************************************/
|
|
|
|
int board_read_VBUS_state(void)
|
|
{
|
|
|
|
return (getreg32(IMXRT_USB_ANALOG_USB1_VBUS_DETECT_STAT) & USB_ANALOG_USB_VBUS_DETECT_STAT_VBUS_VALID) ? 0 : 1;
|
|
}
|