text: /****************************************************************************
   * boards/arm/stm32/stm32f103-minimum/src/stm32_usbdev.c
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.  The
   * ASF licenses this file to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the
   * License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   ****************************************************************************/
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/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 "stm32.h"
  #include "stm32f103_minimum.h"
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: stm32_usbinitialize
   *
   * Description:
   *   Called to setup USB-related GPIO pins for the STM32F103 Minimum board.
   *
   ****************************************************************************/
  
  void stm32_usbinitialize(void)
  {
    /* USB Soft Connect Pullup */
  
    stm32_configgpio(GPIO_USB_PULLUP);
  }
  
  /****************************************************************************
   * Name:  stm32_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
   *   stm32_pullup. 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.
   *
   ****************************************************************************/
  
  int stm32_usbpullup(FAR struct usbdev_s *dev, bool enable)
  {
    usbtrace(TRACE_DEVPULLUP, (uint16_t)enable);
    stm32_gpiowrite(GPIO_USB_PULLUP, enable);
    return OK;
  }
  
  /****************************************************************************
   * Name:  stm32_usbsuspend
   *
   * Description:
   *   Board logic must provide the stm32_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.
   *
   ****************************************************************************/
  
  void stm32_usbsuspend(FAR struct usbdev_s *dev, bool resume)
  {
    uinfo("resume: %d\n", resume);
  }
  