/* * Author: Yevgeniy Kiveisha * Copyright (c) 2014 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 #include #include 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 * @ingroup seeed sparkfun adafruit i2c display gsk */ class I2CLcd { public: I2CLcd(int bus, int lcdAddress); mraa_result_t write(int x, int y, std::string msg); virtual mraa_result_t write(std::string msg) = 0; virtual mraa_result_t setCursor(int row, int column) = 0; virtual mraa_result_t clear() = 0; virtual mraa_result_t home() = 0; virtual mraa_result_t createChar(uint8_t charSlot, uint8_t charData[]); std::string name(); protected: std::string m_name; int m_lcd_control_address; int m_bus; mraa::I2c m_i2c_lcd_control; }; }