uncrustify
13 years ago
committed by
Pat Hickey
1 changed files with 97 additions and 97 deletions
@ -1,123 +1,123 @@
@@ -1,123 +1,123 @@
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/*
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I2C.h - I2C library |
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Copyright (c) 2011 Wayne Truchsess. All right reserved. |
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Rev 2.0 - September 19th, 2011 |
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- Added support for timeout function to prevent |
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and recover from bus lockup (thanks to PaulS |
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and CrossRoads on the Arduino forum) |
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- Changed return type for stop() from void to |
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uint8_t to handle timeOut function |
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Rev 1.0 - August 8th, 2011 |
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This is a modified version of the Arduino Wire/TWI |
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library. Functions were rewritten to provide more functionality |
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and also the use of Repeated Start. Some I2C devices will not |
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function correctly without the use of a Repeated Start. The |
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initial version of this library only supports the Master. |
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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* I2C.h - I2C library |
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* Copyright (c) 2011 Wayne Truchsess. All right reserved. |
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* Rev 2.0 - September 19th, 2011 |
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* - Added support for timeout function to prevent |
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* and recover from bus lockup (thanks to PaulS |
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* and CrossRoads on the Arduino forum) |
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* - Changed return type for stop() from void to |
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* uint8_t to handle timeOut function |
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* Rev 1.0 - August 8th, 2011 |
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* |
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* This is a modified version of the Arduino Wire/TWI |
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* library. Functions were rewritten to provide more functionality |
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* and also the use of Repeated Start. Some I2C devices will not |
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* function correctly without the use of a Repeated Start. The |
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* initial version of this library only supports the Master. |
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* |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <inttypes.h> |
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#if defined(ARDUINO) && ARDUINO >= 100 |
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#include "Arduino.h" |
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#include "Arduino.h" |
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#else |
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#include "WProgram.h" |
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#include "WProgram.h" |
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#endif |
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#ifndef I2C_h |
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#define I2C_h |
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#define I2C_h |
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#define START 0x08 |
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#define REPEATED_START 0x10 |
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#define MT_SLA_ACK 0x18 |
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#define MT_DATA_ACK 0x28 |
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#define MR_SLA_ACK 0x40 |
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#define MR_DATA_ACK 0x50 |
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#define MR_DATA_NACK 0x58 |
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#define TWI_STATUS (TWSR & 0xF8) |
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#define SLA_W(address) (address << 1) |
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#define SLA_R(address) ((address << 1) + 0x01) |
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#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit)) |
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#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit)) |
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#define START 0x08 |
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#define REPEATED_START 0x10 |
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#define MT_SLA_ACK 0x18 |
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#define MT_DATA_ACK 0x28 |
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#define MR_SLA_ACK 0x40 |
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#define MR_DATA_ACK 0x50 |
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#define MR_DATA_NACK 0x58 |
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#define TWI_STATUS (TWSR & 0xF8) |
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#define SLA_W(address) (address << 1) |
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#define SLA_R(address) ((address << 1) + 0x01) |
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#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit)) |
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#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit)) |
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#define MAX_BUFFER_SIZE 32 |
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#define MAX_BUFFER_SIZE 32 |
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#ifndef CPU_FREQ |
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#define CPU_FREQ 16000000L |
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#endif |
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#ifndef CPU_FREQ |
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#define CPU_FREQ 16000000L |
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#endif |
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class I2C |
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{ |
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public: |
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public: |
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I2C(); |
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void begin(); |
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void end(); |
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void timeOut(uint16_t); |
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void setSpeed(boolean); |
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void pullup(boolean); |
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void begin(); |
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void end(); |
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void timeOut(uint16_t); |
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void setSpeed(boolean); |
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void pullup(boolean); |
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///////carry over from Wire library////////
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uint8_t returnStatusWire; |
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uint8_t beginTransmission(uint8_t); |
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uint8_t beginTransmission(int); |
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uint8_t send(uint8_t); |
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uint8_t send(int); |
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uint8_t endTransmission(); |
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uint8_t requestFrom(uint8_t, uint8_t); |
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uint8_t requestFrom(int, int); |
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uint8_t available(); |
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uint8_t returnStatusWire; |
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uint8_t beginTransmission(uint8_t); |
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uint8_t beginTransmission(int); |
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uint8_t send(uint8_t); |
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uint8_t send(int); |
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uint8_t endTransmission(); |
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uint8_t requestFrom(uint8_t, uint8_t); |
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uint8_t requestFrom(int, int); |
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uint8_t available(); |
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///////////////////////////////////////////
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uint8_t write(uint8_t, uint8_t); |
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uint8_t write(int, int); |
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uint8_t write(uint8_t, uint8_t, uint8_t); |
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uint8_t write(int, int, int); |
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uint8_t write(uint8_t, uint8_t, char*); |
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uint8_t write(uint8_t, uint8_t, uint8_t*, uint8_t); |
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uint8_t read(uint8_t, uint8_t); |
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uint8_t read(int, int); |
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uint8_t read(uint8_t, uint8_t, uint8_t); |
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uint8_t read(int, int, int); |
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uint8_t read(uint8_t, uint8_t, uint8_t*); |
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uint8_t read(uint8_t, uint8_t, uint8_t, uint8_t*); |
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uint8_t receive(); |
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uint8_t lockup_count(); |
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private: |
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uint8_t start(); |
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uint8_t sendAddress(uint8_t); |
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uint8_t sendByte(uint8_t); |
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uint8_t receiveByte(boolean); |
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uint8_t stop(); |
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void lockUp(); |
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uint8_t returnStatus; |
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uint8_t nack; |
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uint8_t data[MAX_BUFFER_SIZE]; |
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uint8_t _lockup_count; |
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static uint8_t bytesAvailable; |
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static uint8_t bufferIndex; |
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static uint8_t totalBytes; |
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static uint16_t timeOutDelay; |
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uint8_t write(uint8_t, uint8_t); |
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uint8_t write(int, int); |
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uint8_t write(uint8_t, uint8_t, uint8_t); |
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uint8_t write(int, int, int); |
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uint8_t write(uint8_t, uint8_t, char*); |
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uint8_t write(uint8_t, uint8_t, uint8_t*, uint8_t); |
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uint8_t read(uint8_t, uint8_t); |
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uint8_t read(int, int); |
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uint8_t read(uint8_t, uint8_t, uint8_t); |
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uint8_t read(int, int, int); |
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uint8_t read(uint8_t, uint8_t, uint8_t*); |
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uint8_t read(uint8_t, uint8_t, uint8_t, uint8_t*); |
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uint8_t receive(); |
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uint8_t lockup_count(); |
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private: |
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uint8_t start(); |
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uint8_t sendAddress(uint8_t); |
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uint8_t sendByte(uint8_t); |
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uint8_t receiveByte(boolean); |
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uint8_t stop(); |
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void lockUp(); |
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uint8_t returnStatus; |
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uint8_t nack; |
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uint8_t data[MAX_BUFFER_SIZE]; |
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uint8_t _lockup_count; |
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static uint8_t bytesAvailable; |
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static uint8_t bufferIndex; |
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static uint8_t totalBytes; |
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static uint16_t timeOutDelay; |
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}; |
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extern I2C I2c; |
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extern I2C I2c; |
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#endif |
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