usbuser.c

[詳解]

/*----------------------------------------------------------------------------
 *      U S B  -  K e r n e l
 *----------------------------------------------------------------------------
 * Name:    usbuser.c
 * Purpose: USB Custom User Module
 * Version: V1.20
 *----------------------------------------------------------------------------
 *      This software is supplied "AS IS" without any warranties, express,
 *      implied or statutory, including but not limited to the implied
 *      warranties of fitness for purpose, satisfactory quality and
 *      noninfringement. Keil extends you a royalty-free right to reproduce
 *      and distribute executable files created using this software for use
 *      on NXP Semiconductors LPC microcontroller devices only. Nothing else 
 *      gives you the right to use this software.
 *
 * Copyright (c) 2009 Keil - An ARM Company. All rights reserved.
 *---------------------------------------------------------------------------*/
#include "type.h"

#include "usb.h"
#include "usbcfg.h"
#include "usbhw.h"
#include "usbcore.h"
#include "usbuser.h"
#include "cdcuser.h"


/*
 *  USB Power Event Callback
 *   Called automatically on USB Power Event
 *    Parameter:       power: On(TRUE)/Off(FALSE)
 */

#if USB_POWER_EVENT
void USB_Power_Event (uint32_t  power) {
}
#endif


/*
 *  USB Reset Event Callback
 *   Called automatically on USB Reset Event
 */

#if USB_RESET_EVENT
void USB_Reset_Event (void) {
  USB_ResetCore();
}
#endif


/*
 *  USB Suspend Event Callback
 *   Called automatically on USB Suspend Event
 */

#if USB_SUSPEND_EVENT
void USB_Suspend_Event (void) {
}
#endif


/*
 *  USB Resume Event Callback
 *   Called automatically on USB Resume Event
 */

#if USB_RESUME_EVENT
void USB_Resume_Event (void) {
}
#endif


/*
 *  USB Remote Wakeup Event Callback
 *   Called automatically on USB Remote Wakeup Event
 */

#if USB_WAKEUP_EVENT
void USB_WakeUp_Event (void) {
}
#endif


/*
 *  USB Start of Frame Event Callback
 *   Called automatically on USB Start of Frame Event
 */

#if USB_SOF_EVENT
void USB_SOF_Event (void) {
}
#endif


/*
 *  USB Error Event Callback
 *   Called automatically on USB Error Event
 *    Parameter:       error: Error Code
 */

#if USB_ERROR_EVENT
void USB_Error_Event (uint32_t error) {
}
#endif


/*
 *  USB Set Configuration Event Callback
 *   Called automatically on USB Set Configuration Request
 */

#if USB_CONFIGURE_EVENT
void USB_Configure_Event (void) {

  if (USB_Configuration) {                  /* Check if USB is configured */
    /* add your code here */
  }
}
#endif


/*
 *  USB Set Interface Event Callback
 *   Called automatically on USB Set Interface Request
 */

#if USB_INTERFACE_EVENT
void USB_Interface_Event (void) {
}
#endif


/*
 *  USB Set/Clear Feature Event Callback
 *   Called automatically on USB Set/Clear Feature Request
 */

#if USB_FEATURE_EVENT
void USB_Feature_Event (void) {
}
#endif


#define P_EP(n) ((USB_EP_EVENT & (1 << (n))) ? USB_EndPoint##n : NULL)

/* USB Endpoint Events Callback Pointers */
void (* const USB_P_EP[USB_LOGIC_EP_NUM]) (uint32_t event) = {
  P_EP(0),
  P_EP(1),
  P_EP(2),
  P_EP(3),
  P_EP(4),
};


/*
 *  USB Endpoint 1 Event Callback
 *   Called automatically on USB Endpoint 1 Event
 *    Parameter:       event
 */

void USB_EndPoint1 (uint32_t event) {
  uint16_t temp;
  static uint16_t serialState;

  switch (event) {
    case USB_EVT_IN:
      temp = CDC_GetSerialState();
      if (serialState != temp) {
         serialState = temp;
         CDC_NotificationIn();            /* send SERIAL_STATE notification */
      }
      break;
  }
}


/*
 *  USB Endpoint 2 Event Callback
 *   Called automatically on USB Endpoint 2 Event
 *    Parameter:       event
 */

void USB_EndPoint2 (uint32_t event) {
  event = event;
}


/*
 *  USB Endpoint 3 Event Callback
 *   Called automatically on USB Endpoint 3 Event
 *    Parameter:       event
 */

void USB_EndPoint3 (uint32_t event) {
  switch (event) {
    case USB_EVT_OUT:
      CDC_BulkOut ();                /* data received from Host */
      break;
    case USB_EVT_IN:
      CDC_BulkIn ();                 /* data expected from Host */
      break;
  }
}