156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
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/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2003, 2004, 2005, 2006, 2010 Develer S.r.l. (http://www.develer.com/)
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* Copyright 2001 Bernie Innocenti <bernie@codewiz.org>
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*
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* -->
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*
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* \brief Displaytech 32122A LCD driver
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*
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* \author Bernie Innocenti <bernie@codewiz.org>
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* \author Stefano Fedrigo <aleph@develer.com>
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*
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*/
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#ifndef HW_LCD_32122A_H
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#define HW_LCD_32122A_H
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#include <cpu/types.h>
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#include <cpu/irq.h>
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#warning TODO:This is an example implementation, you must implement it!
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/**
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* Predefined LCD PWM contrast values
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*/
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#define LCD_DEF_PWM 145
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#define LCD_MAX_PWM 505
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#define LCD_MIN_PWM 130
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#define LCD_PWM_CH 0
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/**
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* \name LCD I/O pins/ports
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* @{
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*/
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#define LCD_RS /* Implement me! */
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#define LCD_RW /* Implement me! */
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#define LCD_PE_E1 /* Implement me! */
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#define LCD_PE_E2 /* Implement me! */
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#define LCD_DB0 /* Implement me! */
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#define LCD_DB1 /* Implement me! */
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#define LCD_DB2 /* Implement me! */
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#define LCD_DB3 /* Implement me! */
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#define LCD_DB4 /* Implement me! */
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#define LCD_DB5 /* Implement me! */
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#define LCD_DB6 /* Implement me! */
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#define LCD_DB7 /* Implement me! */
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#define LCD_PF_DB0 /* Implment me! */
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/*@}*/
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/**
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* \name LCD bus control macros
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* @{
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*/
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#define LCD_CLR_A0 do { /* Implement me! */ } while (0)
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#define LCD_SET_A0 do { /* Implement me! */ } while (0)
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#define LCD_CLR_RD do { /* Implement me! */ } while (0)
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#define LCD_SET_RD do { /* Implement me! */ } while (0)
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#define LCD_CLR_E1 do { /* Implement me! */ } while (0)
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#define LCD_SET_E1 do { /* Implement me! */ } while (0)
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#define LCD_CLR_E2 do { /* Implement me! */ } while (0)
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#define LCD_SET_E2 do { /* Implement me! */ } while (0)
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#define LCD_SET_E(x) do { (void)x; /* Implement me! */ } while (0)
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#define LCD_CLR_E(x) do { (void)x; /* Implement me! */ } while (0)
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/*@}*/
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/**
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* \name Chip select bits for LCD_SET_E()
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* @{
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*/
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#define LCDF_E1 ( 0/* Implement me! */)
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#define LCDF_E2 ( 0/* Implement me! */)
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/*@}*/
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/** Read from the LCD data bus (DB[0-7]) */
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#define LCD_WRITE(x) ((void)x)/* Implement me! */
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/** Write to the LCD data bus (DB[0-7]) */
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#define LCD_READ (0 /* Implement me! */ )
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/** Set data bus direction to output (write to display) */
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#define LCD_DB_OUT /* Implement me! */
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/** Set data bus direction to input (read from display) */
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#define LCD_DB_IN /* Implement me! */
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/** Delay for write (Enable pulse width, 220ns) */
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#define LCD_DELAY_WRITE \
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do { \
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NOP; \
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NOP; \
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NOP; \
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NOP; \
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NOP; \
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} while (0)
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/** Delay for read (Data ouput delay time, 120ns) */
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#define LCD_DELAY_READ \
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do { \
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NOP; \
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NOP; \
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NOP; \
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NOP; \
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} while (0)
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#define LCD_32122_RESET() do { /* Implement me! */ } while (0)
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INLINE void lcd_32122a_hw_bus_init(void)
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{
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cpu_flags_t flags;
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IRQ_SAVE_DISABLE(flags);
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/*
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* Here set bus pin!
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* to init a lcd device.
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*
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*/
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/*
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* Data bus is in output state most of the time:
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* LCD r/w functions assume it is left in output state
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*/
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LCD_DB_OUT;
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IRQ_RESTORE(flags);
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}
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#endif /* HW_LCD_32122A_H */
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