lcd_io.h

ST公司的upsd34XX评估板固定源程序

#ifndef _LCD_H_
#define _LCD_H_

typedef xdata struct LCD_display_st {
	uchar LCD_CMD_WR;  		//   LCD_BASE+0x00
	uchar LCD_CMD_RD;  		//           +0x01
   	uchar LCD_RAM_WR;		//           +0x02
   	uchar LCD_RAM_RD;  		//           +0x03  
}  DISPLAY;

// Read Only from Command register
#define  BF_BIT  0x80       // Busy flag

// Write Only to Command register
#define DD_ADDR 0x80        // set DDRAM address
#define CG_ADDR 0x40        // set CGRAM address

//
#define LCD_LINE_LENGTH  0x000F		// length of single line on lcd display

// Prototypes
void initLCD(void);					// initialize LCD module per specs   
void printfLCD(uchar *chr_ptr, ...);

#endif