![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
proyecto prueba ros
Dependencies: mbed Servo HC-SR04 max6675
Diff: TextLCD.h
- Revision:
- 0:4cce815f7d81
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD.h Mon Jun 08 21:16:50 2020 +0000 @@ -0,0 +1,117 @@ +/* mbed TextLCD Library, for a 4-bit LCD based on HD44780 + * Copyright (c) 2007-2010, sford + * + * 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. + */ + +#ifndef MBED_TEXTLCD_H +#define MBED_TEXTLCD_H + +#include "mbed.h" + +#define E_ON 0x4 +#define RS_ON 0x1 + +/** A TextLCD interface for driving 4-bit HD44780-based LCDs + * + * Currently supports 16x2, 20x2 and 20x4 panels + * + * @code + * #include "mbed.h" + * #include "TextLCD.h" + * + * TextLCD lcd(p10, p12, p15, p16, p29, p30); // rs, e, d0-d3 + * + * int main() { + * lcd.printf("Hello World!\n"); + * } + * @endcode + */ +class TextLCD : public Stream { +public: + + /** LCD panel format */ + enum LCDType { + LCD16x2 /**< 16x2 LCD panel (default) */ + , LCD16x2B /**< 16x2 LCD panel alternate addressing */ + , LCD20x2 /**< 20x2 LCD panel */ + , LCD20x4 /**< 20x4 LCD panel */ + }; + + /** Create a TextLCD interface + * + * @param rs Instruction/data control line + * @param e Enable line (clock) + * @param d0-d3 Data lines + * @param type Sets the panel size/addressing mode (default = LCD16x2) + */ + TextLCD(PinName sda, PinName scl, int i2cAddress = 0x7e, LCDType type = LCD16x2); + +#if DOXYGEN_ONLY + /** Write a character to the LCD + * + * @param c The character to write to the display + */ + int putc(int c); + + /** Write a formated string to the LCD + * + * @param format A printf-style format string, followed by the + * variables to use in formating the string. + */ + int printf(const char* format, ...); +#endif + + /** Locate to a screen column and row + * + * @param column The horizontal position from the left, indexed from 0 + * @param row The vertical position from the top, indexed from 0 + */ + void locate(int column, int row); + + /** Clear the screen and locate to 0,0 */ + void cls(); + + int rows(); + int columns(); + +protected: + + // Stream implementation functions + virtual int _putc(int value); + virtual int _getc(); + + int address(int column, int row); + void character(int column, int row, int c); + void writeByte(int value, bool rs); + void writeCommand(int command); + void writeData(int data); + void writeNibble(int value, bool rs); + void writeI2CByte(int data); + + LCDType _type; + int _rs; + I2C _i2c; + int _i2cAddress; + + int _column; + int _row; +}; + +#endif