| /* |
| * 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; |
| } |