111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
/****************************************************************************
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* boards/arm/samd2l2/arduino-m0/src/sam_usb.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <sched.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/usb/usbdev.h>
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#include <nuttx/usb/usbhost.h>
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#include <nuttx/usb/usbdev_trace.h>
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#include "debug.h"
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#include "chip.h"
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#include "sam_port.h"
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#include "saml_periphclks.h"
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#include "arduino_m0.h"
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#if defined(CONFIG_SAMD2L2_USB)
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sam_usbinitialize
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*
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* Description:
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* Called from sam_boot very early in initialization to setup
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* USB-related GPIO pins for the SAML21-Xplained board.
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*
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* USB Ports
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* The SAML21 features USB device and host:
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*
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*
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****************************************************************************/
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void weak_function sam_usbinitialize(void)
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{
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#ifdef HAVE_USBDEV
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/* Detect when a target USB cable is connected in self-powered mode */
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/* The Engie CE0035 doesn't have VBUS SENSE support */
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/* sam_configport(PORT_USB_VBUS_SENSE); */
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/* TODO: Configure an interrupt on VBUS sense */
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#endif
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#ifdef HAVE_USBHOST
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/* In USB host mode VBUS voltage is provided by the kit and can thus not
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* identify a connected device, so another GPIO is used to detect
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* the USB ID of the device.
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*/
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/* The Engie CE0035 doesn't have the USB ID pin connected */
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/* sam_configport(PORT_USB_ID_DETECT); */ /* ID detect */
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#endif
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}
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/****************************************************************************
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* Name: sam_usbsuspend
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*
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* Description:
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* Board logic must provide the sam_usbsuspend logic if the USBDEV driver
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* is used.
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* This function is called whenever the USB enters or leaves suspend mode.
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* This is an opportunity for the board logic to shutdown clocks, power,
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* etc. while the USB is suspended.
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*
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****************************************************************************/
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#ifdef CONFIG_USBDEV
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void sam_usb_suspend(struct usbdev_s *dev, bool resume)
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{
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uinfo("board: resume: %d\n", resume);
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}
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#endif
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#endif /* CONFIG_SAMDL_USB */
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