library for Seeed's Grove - 4 Digit Display
Dependents: SeeedStudio_Grove_Sensors_Demo thermostat_fan_demo--fan microbit-8-ultrasonic-meter HAHAHA ... more
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Diff: DigitDisplay.h
- Revision:
- 0:d3173c8bfd48
diff -r 000000000000 -r d3173c8bfd48 DigitDisplay.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DigitDisplay.h Sat Feb 08 05:42:09 2014 +0000 @@ -0,0 +1,96 @@ +/* The library of Grove - 4 Digit Display + * + * \author Yihui Xiong + * \date 2014/2/8 + * + * The MIT License (MIT) + * + * Copyright (c) 2014 Seeed Technology Inc. + * + * 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 __DIGIT_DISPLAY__ +#define __DIGIT_DISPLAY__ + +#include "mbed.h" + +class DigitDisplay +{ +public: + DigitDisplay(PinName clk, PinName dio); + + /** + * Display a decimal number, A number larger than 10000 or smaller than -1000 will be truncated, MSB will be lost. + */ + void write(int16_t number); + + /** + * Display four numbers + * \param numbers 0 - 0xF: 0 - 9, A, b, C, d, E, F + * 0x10 - 0xFE: '_'(unknown) + * 0xFF: ' '(null) + */ + void write(uint8_t numbers[]); + + /** + * Display a number in a specific position + * \param position 0 - 3, left to right + * \param number 0 - 0xF: 0 - 9, A, b, C, d, E, F + * 0x10 - 0xFE: '_' + * 0xFF: ' ' + */ + void write(uint8_t position, uint8_t number); + + void writeRaw(uint8_t position, uint8_t segments); + void writeRaw(uint8_t segments[]); + + void clear(); + void on(); + void off(); + + /** + * Set the brightness, level 0 to level 7 + */ + void setBrightness(uint8_t brightness); + + /** + * Enable/Disable the colon + */ + void setColon(bool enable); + + DigitDisplay& operator= (int16_t number) { + write(number); + return *this; + } + +private: + void start(); + bool send(uint8_t data); + void stop(); + + DigitalOut _clk; + DigitalInOut _dio; + bool _off; + bool _colon; + uint8_t _brightness; + uint8_t _content[4]; +}; + +#endif // __DIGIT_DISPLAY__