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#define set_ERAM() AUXR=AUXR&0xFD //使用内部扩展RAM<br>
#define set_XRAM() AUXR=AUXR|0x02 //使用外部RAM<br>
<br>
#define MP3_decoder_en() MP3CON=MP3CON|0x80 //启动MP3解码器<br>
#define MP3_decoder_disen() MP3CON=MP3CON&~0x80 //停止MP3解码器<br>
<br>
#define MP3_bass_boost() MP3CON=MP3CON |
0x40 //启动重低音效果<br>
#define MP3_no_bass_boost() MP3CON=MP3CON & ~0x40 //关闭重低音效果<br>
<br>
#define MP3_CRC_en() MP3CON=MP3CON
| 0x20 //允许CRC校验<br>
#define MP3_CRC_disen() MP3CON=MP3CON
& ~0x20 //禁止CRC校验<br>
<br>
#define MPREQ_interrupt_en() MP3CON=MP3CON &
~0x80 //MP3数据请求中断允许<br>
#define MPREQ_interrupt_disen() MP3CON=MP3CON | 0x80
//MP3数据请求不允许中断<br>
<br>
#define set_vol(vol) MP3VOL=vol //设置左声道音量<br>
#define set_vor(vor) MP3VOR=vor //设置右声道音量<br>
<br>
#define set_bas(bas) MP3BAS=bas //设置低音提升<br>
#define set_med(med) MP3MED=med //中音音提升<br>
#define set_tre(tre) MP3TRE=tre //高音提升<br>
<br>
#define DAC_data_request_en() AUDCON1=AUDCON1 | 0x40 //允许DAC数据请求<br>
#define DAC_data_request_disen() AUDCON1=AUDCON1 & ~0x40 //不允许DAC数据请求<br>
<br>
#define DAC_interface_en() AUDCON1=AUDCON1 | 0x01 //DAC接口允许<br>
#define DAC_interface_disen() AUDCON1=AUDCON1 & ~0x01 //DAC借口不允许<br>
<br>
#define set_DAC_CLK(clk) AUDCLK=((clk)&0x1F) //设置DAC时钟<br>
<br>
#define pause() DAC_data_request_disen() //暂停<br>
#define pause_play() DAC_data_request_en() //从暂停中恢复播放<br>
//这两个功能是按照51snd1的datasheet介绍做的，但是好象不能从暂停中恢复播放<br>
<br>
<br>
#endif<br>
<br>
<br>
/* key_board.h file<br>
Created by Computer-lov Date: 2005.3.19<br>
Copyright (c) 2005 Computer-lov<br>
version 1.0<br>
*/<br>
<br>
#ifndef __KEY_BOARD_H__<br>
#define __KEY_BOARD_H__<br>
<br>
extern unsigned char key;<br>
<br>
void ISR_keyboard(void);<br>
<br>
#define KEY_UP 1<br>
#define KEY_FUN 2<br>
#define KEY_DOWN 3<br>
#define KEY_OK 4<br>
<br>
#endif<br>
<br>
<br>
/* MP3.H File<br>
Created by Computer-lov date: 2005.3.19<br>
Copyright (c) 2005 Computer-lov<br>
version 1.0<br>
*/<br>
<br>
#ifndef __MP3_H__<br>
#define __MP3_H__<br>
<br>
#define START 0<br>
#define PLAY 1<br>
#define PAUSE 2<br>
#define STOP 3<br>
#define USB 4<br>
<br>
#define FUN_SEL 0<br>
#define FUN_VOL 1<br>
#define FUN_BAS 2<br>
#define FUN_MED 3<br>
#define FUN_TRE 4<br>
#define FUN_BOOT 5<br>
#define FUN_MAX 6<br>
<br>
extern unsigned char status;<br>
extern unsigned char function,vol,bas,med,tre; //保存音量等设置<br>
<br>
void play(void);<br>
void DAC_start(unsigned char);<br>
<br>
#endif<br>
<br>
<br>
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