lcd.h
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1
6/*
7 * The contents of this file are subject to the Mozilla Public License
8 * Version 1.0 (the "License"); you may not use this file except in
9 * compliance with the License. You may obtain a copy of the License
10 * at http://www.mozilla.org/MPL/
11 *
12 * Software distributed under the License is distributed on an "AS IS"
13 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
14 * the License for the specific language governing rights and
15 * limitations under the License.
16 *
17 * The Original Code is legOS code, released October 17, 1999.
18 *
19 * The Initial Developer of the Original Code is Markus L. Noga.
20 * Portions created by Markus L. Noga are Copyright (C) 1999
21 * Markus L. Noga. All Rights Reserved.
22 *
23 * Contributor(s): Markus L. Noga <markus@noga.de>
24 */
25
26#ifndef __sys_lcd_h__
27#define __sys_lcd_h__
28
29#ifdef __cplusplus
30extern "C" {
31#endif
32
33#include <config.h>
34#include <rom/lcd.h>
35
37//
38// Definitions
39//
41
42// Offsets and size of the LCD shadow buffer used to speed up
43// lcd_refresh()
44//
45#define LCD_SHORT_CMD 0
46#define LCD_LONG_CMD 3
47#define LCD_DATA_OFFSET 5
48#define LCD_DATA_SIZE 9
49
50// PCF8566 LCD driver commands
51//
52#define LCD_MODE_SET 0x40
53#define LCD_ENABLE 0x08
54#define LCD_DISABLE 0x00
55
56// LCD i2c bus constants
57//
58#define LCD_DEV_ID 0x7c
59
60#define I2C_WRITE 0
61#define I2C_READ 1
62
63#define SCL 5
64#define SDA 6
65
66
68//
69// Variables
70//
72
73extern unsigned char display_memory[];
74
76//
77// Functions
78//
80
82extern void lcd_init(void);
83
85extern void lcd_power_on(void);
86
88extern void lcd_power_off(void);
89
91
93extern void lcd_refresh(void);
94
96
99extern void lcd_refresh_next_byte(void)
100#ifdef CONF_RCX_COMPILER
101__attribute__ ((rcx_interrupt))
102#endif
103;
104
105#ifdef __cplusplus
106}
107#endif
108
109#endif // __sys_lcd_h__
kernel configuration file
ROM Interface: RCX LCD control.
void lcd_refresh(void)
show LCD display contents to the world
Definition: lcd.c:254
void lcd_init(void)
initialize LCD driver
Definition: lcd.c:295
void lcd_power_on(void)
power on LCD display, also called from lcd_init()
Definition: lcd.c:266
unsigned char display_memory[]
LCD display data buffer.
void lcd_refresh_next_byte(void)
show LCD display contents to the world
void lcd_power_off(void)
power off LCD display
Definition: lcd.c:279

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