crashtest-r0ket/firmware/usbcdc/usbcore.h

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2011-07-10 16:02:07 +00:00
/*----------------------------------------------------------------------------
* U S B - K e r n e l
*----------------------------------------------------------------------------
* Name: usbcore.h
* Purpose: USB Core Definitions
* 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.
*---------------------------------------------------------------------------*/
#ifndef __USBCORE_H__
#define __USBCORE_H__
#include "usbcfg.h"
/* USB Endpoint Data Structure */
typedef struct _USB_EP_DATA {
uint8_t *pData;
uint16_t Count;
} USB_EP_DATA;
/* USB Core Global Variables */
extern uint16_t USB_DeviceStatus;
extern uint8_t USB_DeviceAddress;
volatile extern uint8_t USB_Configuration;
extern uint32_t USB_EndPointMask;
extern uint32_t USB_EndPointHalt;
extern uint32_t USB_EndPointStall;
extern uint8_t USB_AltSetting[USB_IF_NUM];
/* USB Endpoint 0 Buffer */
extern uint8_t EP0Buf[USB_MAX_PACKET0];
/* USB Endpoint 0 Data Info */
extern USB_EP_DATA EP0Data;
/* USB Setup Packet */
extern USB_SETUP_PACKET SetupPacket;
/* USB Core Functions */
extern void USB_ResetCore (void);
/* Newer C compilers make it really difficult to add
* an integer to a pointer */
static inline void UsbAddPtr(void **vpptr, uint32_t n);
/*
* Add a number of bytes to a pointer's address
* Harder than you might think. Some compilers say:
* Expected an lvalue -- Assignment expects its first operand to be
* an lvalue. Please note that a cast removes the lvaluedness of an
* expression.
*
* vpptr = void pointer to pointer
* n = number of bytes to add to pointer
* Call looks like: AddPtr((void **)&myPointer, 8);
*/
static inline void UsbAddPtr(void **vpptr, uint32_t n)
{
/* Declare a pointer to a pointer to a byte. Only a byte pointer
* can be incremented by a number of bytes. Other pointers will
* increment by a multiple of what they point to.
*/
uint8_t **bpptr;
/* Convert our void pointer to a pointer to a byte pointer to a pointer */
bpptr = (uint8_t **)vpptr;
/* Add 'n' bytes to our pointer value */
(*bpptr) += n;
}
#endif /* __USBCORE_H__ */