portbit.h

我改写的在TFT上显示SD卡中BMP文件的程序

#ifndef __PORTBIT_H__
#define __PORTBIT_H__

#define H(port,bitvalue)  port |=(bitvalue)
#define L(port,bitvalue)  port &=~(bitvalue)
#define N(port,bitvalue)  port ^=(bitvalue)
#define BIT(x)    (1<<x)
#define B0 (1<<0)
#define B1 (1<<1)
#define B2 (1<<2)
#define B3 (1<<3)
#define B4 (1<<4)
#define B5 (1<<5)
#define B6 (1<<6)
#define B7 (1<<7)

#define CLI() L(SREG,B7)
#define SEI() H(SREG,B7)

#define	uchar unsigned char
#define uint  unsigned short int
#define ulong unsigned long int
#define UINT  unsigned short int
#define DWORD unsigned long int
#define	BYTE unsigned char

#endif