usbaudio.h

00001 /*----------------------------------------------------------------------------
00002  *      Name:    usbaudio.h
00003  *      Purpose: USB Audio Demo Definitions
00004  *      Version: V1.10
00005  *----------------------------------------------------------------------------
00006  *      This software is supplied "AS IS" without any warranties, express,
00007  *      implied or statutory, including but not limited to the implied
00008  *      warranties of fitness for purpose, satisfactory quality and
00009  *      noninfringement. Keil extends you a royalty-free right to reproduce
00010  *      and distribute executable files created using this software for use
00011  *      on NXP Semiconductors LPC family microcontroller devices only. Nothing 
00012  *      else gives you the right to use this software.
00013  *
00014  * Copyright (c) 2009 Keil - An ARM Company. All rights reserved.
00015  *---------------------------------------------------------------------------*/
00016 
00017 /* Audio Definitions */
00018 #define DATA_FREQ 32000                 /* Audio Data Frequency */
00019 #define P_S       32                    /* Packet Size */
00020 #if USB_DMA
00021 #define P_C       4                     /* Packet Count */
00022 #else
00023 #define P_C       1                     /* Packet Count */
00024 #endif
00025 #define B_S       (8*P_C*P_S)           /* Buffer Size */
00026 
00027 /* Push Button Definitions */
00028 // #define PBINT     0x00004000            /* P0.14 */
00029 
00030 /* LED Definitions */
00031 #define LEDMSK    0x000000FF            /* P2.0..7 */
00032 
00033 /* Audio Demo Variables */
00034 extern uint8_t  Mute;                      /* Mute State */
00035 extern uint32_t Volume;                    /* Volume Level */
00036 extern uint16_t  VolCur;                    /* Volume Current Value */
00037 #if !USB_DMA
00038 extern uint32_t InfoBuf[P_C];              /* Packet Info Buffer */
00039 extern short DataBuf[B_S];              /* Data Buffer */
00040 #else
00041 extern uint32_t *InfoBuf;
00042 extern short *DataBuf;
00043 #endif
00044 extern uint16_t  DataOut;                   /* Data Out Index */
00045 extern uint16_t  DataIn;                    /* Data In Index */
00046 extern uint8_t   DataRun;                   /* Data Stream Run State */