VLSI Solution Oy Evaluation MP3 Player Source Code Documentation

board.h

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#ifndef BOARD_H
#define BOARD_H

/* Include processor definition */
#include "AT89C51ED2-SFR.h"

/* MP3 Player Chip Connections */

#define MP3_XRESET P2_4

#define Mp3PutInReset(){MP3_XRESET=0;}

#define Mp3ReleaseFromReset(){MP3_XRESET=1;}

#define MP3_XCS P2_3

#define Mp3SelectControl(){MP3_XCS=0;}

#define Mp3DeselectControl(){MP3_XCS=1;}

#define MP3_XDCS P2_5

#define Mp3SelectData(){MP3_XDCS=0;}

#define Mp3DeselectData(){MP3_XDCS=1;}




#ifdef PCB2
#define MP3_DREQ P3_4
#else
#define MP3_DREQ P3_2
#endif

/* 
 * LED Connections
 */

#define RED_LED P3_3

#define GREEN_LED P3_7

#define LED_ON 0

#define LED_OFF 1


/*
 * Button connections
 */

#define KEY_BUTTON !(P1_2)

#define KEY_FARRIGHT !(P1_1)

#define KEY_RIGHT !(P1_0)

#define KEY_LEFT !(P1_3)

#ifdef PCB2
#define KEY_FARLEFT !(P3_2)
#else
#define KEY_FARLEFT !(P3_4)
#endif



/*
 * LCD Connections
 *
 * Standard LCD Module: Tianma TM161A
 *
 */

#define LCD_DATABUS P0

#define LCD_RS P2_0

#define LCD_ENABLE P2_2

#define LCD_RW 0

#define LCD_COMMAND_MODE 0

#define LCD_DATA_MODE 1


/*
 * Various connections 
 */

#define RSEN P2_1



/*
 * MMC connections 
 */


#define YES 1

#define NO 0

#define MMC_OFF P2_7

#define MMC_XCS P2_6

#define MMC_SELECTED 0

#define MMC_NOT_SELECTED 1





/* Utility macros */



/* Delay system */


#define ClearPCAOverflow() {CCON &= 0x7f;}

#define PCARun() {CCON |= 0x40;}

#define PCAHalt() {CCON &= 0xBF;}

#define PCAHaltAndClearOV() {CCON &= 0x3F;}


#define SetPCAValue(v) {CH = ((unsigned)(v)) >> 8;  CL = (v) & 0xff;}

#define SetPCADelayValue(microseconds) {SetPCAValue(65535-(unsigned int)((microseconds)/0.4069010));}

#define InitiateDelay(microseconds) {PCAHaltAndClearOV(); SetPCADelayValue(microseconds); PCARun();}

#define WaitOutDelay(){while (!(CCON & 0x80));}



/* SPI macros */

#define SPISetFastClock(){SPCON=0x71;}  /* 0x73 is much slower*/


#define SPIWait(){while(!(SPSTA & 0x80));;}

#define SPIPutChar(c){SPIWait();SPDAT=(c);}

#define SPIPutCharWithoutWaiting(c){SPDAT=(c);}

#define SPI_RESULT_BYTE SPDAT

unsigned char SPIGetChar();

void SPI8Clocks(unsigned char nClocks);



extern union Temp {
  unsigned char c;
  unsigned int i;
  unsigned long l;
  struct {
    unsigned char b0;
    unsigned char b1;
    unsigned char b2;
    unsigned char b3;
  } b;
} temp;





/* Utility functions */

void Delay (int milliseconds);

void InitBoard();



#define Public



#endif

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All software copyright 2000-2004 VLSI Solution OY. Redistribution of these software modules are limited to promotional use only and only with the VS1011 / VS1002 / VS1003 MP3-Evakit evaluation boards. Free or commercial use of these software modules in MP3 players is ok if the product includes MP3 decoder chip(s) from VLSI. You can request the complete (compilable) package from mp3@vlsi.fi