hw_lcd.h File Reference

LCD low-level hardware macros. More...

#include <appconfig.h>
#include <cpu/attr.h>
#include <cpu/irq.h>
#include <cpu/types.h>
#include <cfg/macros.h>
#include <cfg/debug.h>
#include <avr/io.h>
#include <stdbool.h>
#include <inttypes.h>


Defines
#define	LCD_DB_OUT (LCD_DB_DDR \|= LCD_MASK)
	Set data bus direction to output (write to display).
#define	LCD_DB_IN (LCD_DB_DDR &= ~LCD_MASK)
	Set data bus direction to input (read from display).
#define	LCD_DELAY_WRITE
	Delay for write (Enable pulse width, 220ns).
#define	LCD_DELAY_READ
	Delay for read (Data ouput delay time, 120ns).
LCD I/O pins/ports
#define	LCD_RS BV(PG3)
#define	LCD_RW BV(PG0)
#define	LCD_E BV(PG2)
#define	LCD_DB0 BV(PA0)
#define	LCD_DB1 BV(PA1)
#define	LCD_DB2 BV(PA2)
#define	LCD_DB3 BV(PA3)
#define	LCD_DB4 BV(PA4)
#define	LCD_DB5 BV(PA5)
#define	LCD_DB6 BV(PA6)
#define	LCD_DB7 BV(PA7)
DB high nibble (DB[4-7])
#define	LCD_PORT PORTG
#define	LCD_DB_PORT PORTA
#define	LCD_PIN PING
#define	LCD_DB_PIN PINA
#define	LCD_DDR DDRG
#define	LCD_DB_DDR DDRA
#define	LCD_MASK (uint8_t)0xff
#define	LCD_SHIFT 0
LCD bus control macros
#define	LCD_CLR_RS (LCD_PORT &= ~LCD_RS)
#define	LCD_SET_RS (LCD_PORT \|= LCD_RS)
#define	LCD_CLR_RD (LCD_PORT &= ~LCD_RW)
#define	LCD_SET_RD (LCD_PORT \|= LCD_RW)
#define	LCD_CLR_E (LCD_PORT &= ~LCD_E)
#define	LCD_SET_E (LCD_PORT \|= LCD_E)
#define	LCD_WRITE(x) (LCD_DB_PORT = (x))
#define	LCD_READ (LCD_DB_PIN)

Detailed Description

LCD low-level hardware macros.

Author:: Bernardo Innocenti <bernie@develer.com>
Stefano Fedrigo <aleph@develer.com>

Definition in file hw_lcd.h.