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lcd: move the hd44780 controller bit definitions into a separate header

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Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Jon Trulson 2015-07-09 13:08:37 -06:00 committed by Mihai Tudor Panu
parent 3aaafdcecf
commit 56f7e97536
7 changed files with 91 additions and 47 deletions
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86
src/lcd/hd44780_bits.h Normal file
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@ -0,0 +1,86 @@
/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2015 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#pragma once
// This file contains bit definitions for the HD44780 and compatible
// LCD controllers. They are used by most drivers in this (LCD)
// library, though the SSD controllers only seem to make use of the
// LCD_DATA and LCD_CMD values.
//
// Those values (DATA, CMD) are specific to the implementation of the
// i2C expander in use, so may not be appropriate for inclusion into
// this file. But for now, we will leave them here.
#include <stdint.h>
namespace upm
{
// commands
const uint8_t LCD_CLEARDISPLAY = 0x01;
const uint8_t LCD_RETURNHOME = 0x02;
const uint8_t LCD_ENTRYMODESET = 0x04;
const uint8_t LCD_DISPLAYCONTROL = 0x08;
const uint8_t LCD_CURSORSHIFT = 0x10;
const uint8_t LCD_FUNCTIONSET = 0x20;
const uint8_t LCD_BACKLIGHT = 0x08;
const uint8_t LCD_NOBACKLIGHT = 0x00;
// flags for display entry mode
const uint8_t LCD_ENTRYRIGHT = 0x00;
const uint8_t LCD_ENTRYLEFT = 0x02;
const uint8_t LCD_ENTRYSHIFTINCREMENT = 0x01;
const uint8_t LCD_ENTRYSHIFTDECREMENT = 0x00;
// flags for display on/off control
const uint8_t LCD_DISPLAYON = 0x04;
const uint8_t LCD_DISPLAYOFF = 0x00;
const uint8_t LCD_CURSORON = 0x02;
const uint8_t LCD_CURSOROFF = 0x00;
const uint8_t LCD_BLINKON = 0x01;
const uint8_t LCD_BLINKOFF = 0x00;
// flags for display/cursor shift
const uint8_t LCD_DISPLAYMOVE = 0x08;
const uint8_t LCD_MOVERIGHT = 0x04;
const uint8_t LCD_MOVELEFT = 0x00;
// flags for function set
const uint8_t LCD_8BITMODE = 0x10;
const uint8_t LCD_4BITMODE = 0x00;
const uint8_t LCD_2LINE = 0x08;
const uint8_t LCD_1LINE = 0x00;
const uint8_t LCD_5x10DOTS = 0x04;
const uint8_t LCD_5x8DOTS = 0x00;
// flags for CGRAM
const uint8_t LCD_SETCGRAMADDR = 0x40;
// may be implementation specific
const uint8_t LCD_EN = 0x04; // Enable bit
const uint8_t LCD_RW = 0x02; // Read/Write bit
const uint8_t LCD_RS = 0x01; // Register select bit
const uint8_t LCD_DATA = 0x40;
const uint8_t LCD_CMD = 0x80;
}

1
src/lcd/jhd1313m1.cxx
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@ -27,6 +27,7 @@
#include <unistd.h>
#include "lcd_private.h"
#include "hd44780_bits.h"
#include "jhd1313m1.h"
using namespace upm;

1
src/lcd/lcd.cxx
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@ -26,6 +26,7 @@
#include <unistd.h>
#include "lcd.h"
#include "hd44780_bits.h"
#include "lcd_private.h"
using namespace upm;

47
src/lcd/lcd.h
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@ -28,53 +28,6 @@
namespace upm
{
// commands
const uint8_t LCD_CLEARDISPLAY = 0x01;
const uint8_t LCD_RETURNHOME = 0x02;
const uint8_t LCD_ENTRYMODESET = 0x04;
const uint8_t LCD_DISPLAYCONTROL = 0x08;
const uint8_t LCD_CURSORSHIFT = 0x10;
const uint8_t LCD_FUNCTIONSET = 0x20;
const uint8_t LCD_DATA = 0x40;
const uint8_t LCD_CMD = 0x80;
const uint8_t LCD_BACKLIGHT = 0x08;
const uint8_t LCD_NOBACKLIGHT = 0x00;
// flags for display entry mode
const uint8_t LCD_ENTRYRIGHT = 0x00;
const uint8_t LCD_ENTRYLEFT = 0x02;
const uint8_t LCD_ENTRYSHIFTINCREMENT = 0x01;
const uint8_t LCD_ENTRYSHIFTDECREMENT = 0x00;
// flags for display on/off control
const uint8_t LCD_DISPLAYON = 0x04;
const uint8_t LCD_DISPLAYOFF = 0x00;
const uint8_t LCD_CURSORON = 0x02;
const uint8_t LCD_CURSOROFF = 0x00;
const uint8_t LCD_BLINKON = 0x01;
const uint8_t LCD_BLINKOFF = 0x00;
// flags for display/cursor shift
const uint8_t LCD_DISPLAYMOVE = 0x08;
const uint8_t LCD_MOVERIGHT = 0x04;
const uint8_t LCD_MOVELEFT = 0x00;
// flags for function set
const uint8_t LCD_8BITMODE = 0x10;
const uint8_t LCD_4BITMODE = 0x00;
const uint8_t LCD_2LINE = 0x08;
const uint8_t LCD_1LINE = 0x00;
const uint8_t LCD_5x10DOTS = 0x04;
const uint8_t LCD_5x8DOTS = 0x00;
// flags for CGRAM
const uint8_t LCD_SETCGRAMADDR = 0x40;
const uint8_t LCD_EN = 0x04; // Enable bit
const uint8_t LCD_RW = 0x02; // Read/Write bit
const uint8_t LCD_RS = 0x01; // Register select bit
/**
* @brief I2C LCD display library
* @defgroup i2clcd libupm-i2clcd

1
src/lcd/lcm1602.cxx
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@ -28,6 +28,7 @@
#include <string>
#include <unistd.h>
#include "hd44780_bits.h"
#include "lcm1602.h"
using namespace upm;

1
src/lcd/ssd1308.cxx
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@ -25,6 +25,7 @@
#include <string>
#include <unistd.h>
#include "hd44780_bits.h"
#include "ssd1308.h"
using namespace upm;

1
src/lcd/ssd1327.cxx
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@ -25,6 +25,7 @@
#include <string>
#include <unistd.h>
#include "hd44780_bits.h"
#include "ssd1327.h"
using namespace upm;