MCP23S17 Bufferd
ExioBufferedRotaryEncoder.cpp
- Committer:
- ryood
- Date:
- 2016-11-04
- Revision:
- 5:23d00c321cb1
- Parent:
- EsioBufferedRotaryEncoder.cpp@ 4:acd6e59f8544
File content as of revision 5:23d00c321cb1:
/** * ============================================================================= * 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; } }