MCP23S17 Bufferd
Diff: EsioBufferedRotaryEncoder.cpp
- Revision:
- 4:acd6e59f8544
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EsioBufferedRotaryEncoder.cpp Fri Nov 04 22:23:31 2016 +0000 @@ -0,0 +1,85 @@ +/** + * ============================================================================= + * Rotary Encoder class (Version 0.0.1) + * ============================================================================= + * Copyright (c) 2010 Shinichiro Nakamura (CuBeatSystems) + * + * 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. + * ============================================================================= + */ + +/* + * 2016.11.5 Customized for MCP23S17 Buffered Input by ryood + */ +#include "ExioBufferedRotaryEncoder.h" + +/** + * Create rotary encoder. + * @param buffer + * @param pin1 + * @param pin2 + * @param min Minimum value. + * @param max Maximum value. + * @param val Default value. + */ +ExioBufferedRotaryEncoder::ExioBufferedRotaryEncoder( + ExioInBuffer* buffer, int pin1, int pin2, + int min, int max, int val) + : min(min), max(max), val(val) +{ + in1 = new ExioBufferedIn(buffer, pin1); + in2 = new ExioBufferedIn(buffer, pin2); + in1->mode(PullUp); + in2->mode(PullUp); + //ticker.attach_us(this, &ExioMcp23s17RotaryEncoder::func_ticker, 500); +} + +/** + * Dispose. + */ +ExioBufferedRotaryEncoder::~ExioBufferedRotaryEncoder() { + delete in1; + delete in2; +} + +/** + * Internal tick function. + */ +void ExioBufferedRotaryEncoder::func_ticker() { + //static uint8_t code; + + code = (code << 2) + (((in1->read() << 1) | (in2->read() << 0)) & 3); + code &= 15; + switch (code) { + case 0x7: + if (min < val) { + val--; + } else { + val = min; + } + break; + case 0xd: + if (val < max) { + val++; + } else { + val = max; + } + break; + } +}