lcd.h

lcd interface code for lpc214x series micro controllers

// Copyright (c) 2004 senz at arm.dreamislife.com
//
//
// THIS FILE IS PROVIDED AS IS WITH NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

/***************************************/
/* LCD routines for OLIMEX LPC-MT-2106 */
/* 16x2 Character LCD 1602K            */
/* 4-bit mode operation                */
/***************************************/


/* DEFINE IOMASK */
#define  LCD_D4  0x10   //P0.04
#define  LCD_D5  0x20   //P0.05
#define  LCD_D6  0x40   //P0.06
#define  LCD_D7  0x80   //P0.07
#define  LCD_EN  0x400000   //P0.22
#define  LCD_RS  0x800000   //P0.23
#define  LCD_RW  0x1000000  //P0.24

#define  LCD_DATA           (LCD_D4|LCD_D5|LCD_D6|LCD_D7)
#define  LCD_IOALL          (LCD_D4|LCD_D5|LCD_D6|LCD_D7|LCD_EN|LCD_RS|LCD_RW)

#define  LCD_GPIO_SEL0      0x0000FF00   //MASK for P0.04-P0.07
#define  LCD_GPIO_SEL1      0x0003F000   //MASK for P0.22-P0.24


/* Functions Header */
/* internal I/O functions */
#define lcd_rs_set() IOSET |= LCD_RS
#define lcd_rs_clr() IOCLR |= LCD_RS
#define lcd_en_set() IOSET |= LCD_EN
#define lcd_en_clr() IOCLR |= LCD_EN
#define lcd_rw_set() IOSET |= LCD_RW
#define lcd_rw_clr() IOCLR |= LCD_RW

/* wait until lcd controller is free */
void lcd_wait();
void lcd_out_data4(unsigned char);
void lcd_write_nibbles(unsigned char);
void lcd_write_control(unsigned char);



/* initialize both the GPIO of lpc and LCD */
void lcd_init();

//#define lcd_clear()         lcd_write_control(0x01)
#define lcd_cursor_home()   lcd_write_control(0x02)

#define lcd_display_on()    lcd_write_control(0x0E)
#define lcd_display_off()   lcd_write_control(0x08)

#define lcd_cursor_blink()  lcd_write_control(0x0F)
#define lcd_cursor_on()     lcd_write_control(0x0E)
#define lcd_cursor_off()    lcd_write_control(0x0C)

#define lcd_cursor_left()   lcd_write_control(0x10)
#define lcd_cursor_right()  lcd_write_control(0x14)
#define lcd_display_sleft() lcd_write_control(0x18)
#define lcd_display_sright() lcd_write_control(0x1C)



/* put a character out to lcd */
void lcd_putchar(unsigned char);
/* print a string */
void lcd_print(unsigned char*);
//   UC51   //

/* LCD_DRV.H */
void lcd_gotoxy(char nx,char ny);  // reentrant;
void lcd_cursor(unsigned char cur);
void lcd_clear(void);