const.h

e1c0df5d-c8bc-48a5-bc02-a2b7c51c0dbf是做mp3的源代码

#ifndef _CONST_
#define _CONST_

#define DIR_UP 1
#define DIR_DOWN 2

#define F_CPU 8000000
#define TI1_H	(((unsigned int)-(F_CPU / 2560)) >> 8)
#define TI1_L	(((unsigned int)-(F_CPU / 2560)) & 0xff)

#define EPSON_NEW_LCD
#define MMC

#define SPI_SEND(a) outp(a, SPDR); while(!(SPSR & (1 << SPIF)));
#define SPI_ENABLE sbi(SPCR, SPE);
#define SPI_DISABLE cbi(SPCR, SPE);

#define DREQ_PIN	PD0
#define BUTTON_1	PE0
#define BUTTON_2	PD1
#define BUTTON_3	PD4
#define BUTTON_4	PD5
#define LED_PIN		PB0
// reset for VS1001
#define RESET_PIN	PB1
#define CHARGE_PORT	PORTE
// ALE pin
#define CHARGE_PIN	PE1

#define CMD_PLAY 1
#define CMD_STOP 2
#define CMD_NEXT 3
#define CMD_PREV 4
#define CMD_VOLDOWN 5
#define CMD_VOLUP 6
#define CMD_OFF 7
#define CMD_MENU 8
#define KEYLOCK 9

#define BUTTON_PLAY 0x01
#define BUTTON_STOP 0x02
#define BUTTON_FF 0x03
#define BUTTON_REW 0x04
#define BUTTON_LOCK 0x05
#define WAIT_RELEASE 0x0f

#define EE_VOLUME 0x001
#define EE_FILENR 0x002
#define EE_CONTRAST 0x004
#define EE_LOUDNESS 0x005
#define EE_LOCKTIME 0x006
#define EE_BLTIME 0x007
#define EE_PLAYMODE 0x008
#define EE_BLMODE 0x009
#define EE_TIMEDISP 0x010
#define EE_DIRCLUSTER 0x011

#define SCROLLSPEED 4
#define LCDUPDATEFREQ 4

#define LOCKTIME 150

// clock doubler value for 12.288 MHz crystal
//#define F_VS1001 (6144 + 0x8000)

// clock doubler value for 14.3 MHz crystal
#define F_VS1001 (14300000/2000 + 0x8000)

// constants for play modes
#define PAUSE 2
#define PLAY 1
#define STOP 0

// constants for filetypes
#define TYPE_MP3 0
#define TYPE_M3U 1
#define TYPE_RGB 2
#define TYPE_ANY 3
#define TYPE_DIR 4

#define NOID3 0
#define DOID3 1
#define MENU_ITEMS 7
#define MENU_PLAYMODE 1
#define MENU_LOUDNESS 2
#define MENU_CONTRAST 3
#define MENU_BLIGHT 4
#define MENU_BLMODE 5
#define MENU_AUTOLOCK 6
#define MENU_TIMEDISP 7

#define SLEEP 0xee

#define REPEAT_OFF 0
#define REPEAT_ONE 1
#define REPEAT_ALL 2

#ifdef COLOR
#define CONTRAST_MIN 0x00
#define CONTRAST_MAX 0x7f
#define CONTRAST_DEF 0x2D
#else
#define CONTRAST_MIN 0x20
#define CONTRAST_MAX 0x58
#define CONTRAST_DEF 0x40
#endif

#define CLKDIV	1

#ifdef MMC

#define ReadSector MMC_Read_Wrapper
#define secbuf mmc_sbuf

#else

#define ReadSector CFReadSector
#define secbuf cf_sbuf

#endif

#endif