/* * Copyright (C) 2012 Southern Storm Software, Pty Ltd. * * 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 BitBangI2C_h #define BitBangI2C_h #include class BitBangI2C { public: BitBangI2C(uint8_t dataPin, uint8_t clockPin); typedef bool ack_t; static const ack_t ACK = false; static const ack_t NACK = true; void start(); void stop(); ack_t startWrite(unsigned int address); ack_t startRead(unsigned int address); ack_t write(uint8_t value); uint8_t read(ack_t ack = ACK); private: uint8_t _dataPin; uint8_t _clockPin; bool started; void writeBit(bool bit); bool readBit(); }; #endif