demo.h

The Audio project is a demo program for the Keil MCB2140 Board using the Philips LPC2148 Microcontr

/*----------------------------------------------------------------------------
 *      Name:    DEMO.H
 *      Purpose: USB Audio Demo Definitions
 *      Version: V1.03
 *----------------------------------------------------------------------------
 *      This file is part of the uVision/ARM development tools.
 *      Copyright (c) 2005 Keil Software. All rights reserved.
 *---------------------------------------------------------------------------*/

/* Clock Definitions */
#define CPU_CLOCK 60000000              /* CPU Clock */
#define VPB_CLOCK (CPU_CLOCK/1)         /* VPB Clock */

/* Audio Definitions */
#define DATA_FREQ 32000                 /* Audio Data Frequency */
#define P_S       32                    /* Packet Size */
#if USB_DMA
#define P_C       4                     /* Packet Count */
#else
#define P_C       1                     /* Packet Count */
#endif
#define B_S       (8*P_C*P_S)           /* Buffer Size */

/* Push Button Definitions */
#define PBINT     0x00004000            /* P0.14 */

/* LED Definitions */
#define LEDMSK    0x00FF0000            /* P1.16..23 */

/* Audio Demo Variables */
extern BYTE  Mute;                      /* Mute State */
extern DWORD Volume;                    /* Volume Level */
extern WORD  VolCur;                    /* Volume Current Value */
extern DWORD InfoBuf[P_C];              /* Packet Info Buffer */
extern short DataBuf[B_S];              /* Data Buffer */
extern WORD  DataOut;                   /* Data Out Index */
extern WORD  DataIn;                    /* Data In Index */
extern BYTE  DataRun;                   /* Data Stream Run State */