From 3ba80468d56485f9a078dbd0854b80beaacbcbd4 Mon Sep 17 00:00:00 2001 From: Alice Pintus Date: Wed, 2 Mar 2016 14:45:57 +0100 Subject: add src folder when missing --- libraries/Wire/Wire.cpp | 330 -------------------------------------------- libraries/Wire/Wire.h | 85 ------------ libraries/Wire/src/Wire.cpp | 330 ++++++++++++++++++++++++++++++++++++++++++++ libraries/Wire/src/Wire.h | 85 ++++++++++++ 4 files changed, 415 insertions(+), 415 deletions(-) delete mode 100644 libraries/Wire/Wire.cpp delete mode 100644 libraries/Wire/Wire.h create mode 100644 libraries/Wire/src/Wire.cpp create mode 100644 libraries/Wire/src/Wire.h (limited to 'libraries/Wire') diff --git a/libraries/Wire/Wire.cpp b/libraries/Wire/Wire.cpp deleted file mode 100644 index 7944fcb..0000000 --- a/libraries/Wire/Wire.cpp +++ /dev/null @@ -1,330 +0,0 @@ -/* - TwoWire.cpp - TWI/I2C library for Wiring & Arduino - Copyright (c) 2006 Nicholas Zambetti. All right reserved. - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts -*/ - -extern "C" { - #include - #include - #include - #include "twi.h" -} - -#include "Wire.h" - -// Initialize Class Variables ////////////////////////////////////////////////// - -uint8_t TwoWire::rxBuffer[BUFFER_LENGTH]; -uint8_t TwoWire::rxBufferIndex = 0; -uint8_t TwoWire::rxBufferLength = 0; - -uint8_t TwoWire::txAddress = 0; -uint8_t TwoWire::txBuffer[BUFFER_LENGTH]; -uint8_t TwoWire::txBufferIndex = 0; -uint8_t TwoWire::txBufferLength = 0; - -uint8_t TwoWire::transmitting = 0; -void (*TwoWire::user_onRequest)(void); -void (*TwoWire::user_onReceive)(int); - -// Constructors //////////////////////////////////////////////////////////////// - -TwoWire::TwoWire() -{ -} - -// Public Methods ////////////////////////////////////////////////////////////// - -void TwoWire::begin(void) -{ - rxBufferIndex = 0; - rxBufferLength = 0; - - txBufferIndex = 0; - txBufferLength = 0; - - twi_init(); -} - -void TwoWire::begin(uint8_t address) -{ - twi_setAddress(address); - twi_attachSlaveTxEvent(onRequestService); - twi_attachSlaveRxEvent(onReceiveService); - begin(); -} - -void TwoWire::begin(int address) -{ - begin((uint8_t)address); -} - -void TwoWire::end(void) -{ - twi_disable(); -} - -void TwoWire::setClock(uint32_t frequency) -{ - TWBR = ((F_CPU / frequency) - 16) / 2; -} - -uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity, uint32_t iaddress, uint8_t isize, uint8_t sendStop) -{ - if (isize > 0) { - // send internal address; this mode allows sending a repeated start to access - // some devices' internal registers. This function is executed by the hardware - // TWI module on other processors (for example Due's TWI_IADR and TWI_MMR registers) - - beginTransmission(address); - - // the maximum size of internal address is 3 bytes - if (isize > 3){ - isize = 3; - } - - // write internal register address - most significant byte first - while (isize-- > 0) - write((uint8_t)(iaddress >> (isize*8))); - endTransmission(false); - } - - // clamp to buffer length - if(quantity > BUFFER_LENGTH){ - quantity = BUFFER_LENGTH; - } - // perform blocking read into buffer - uint8_t read = twi_readFrom(address, rxBuffer, quantity, sendStop); - // set rx buffer iterator vars - rxBufferIndex = 0; - rxBufferLength = read; - - return read; -} - -uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity, uint8_t sendStop) { - return requestFrom((uint8_t)address, (uint8_t)quantity, (uint32_t)0, (uint8_t)0, (uint8_t)sendStop); -} - -uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity) -{ - return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)true); -} - -uint8_t TwoWire::requestFrom(int address, int quantity) -{ - return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)true); -} - -uint8_t TwoWire::requestFrom(int address, int quantity, int sendStop) -{ - return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)sendStop); -} - -void TwoWire::beginTransmission(uint8_t address) -{ - // indicate that we are transmitting - transmitting = 1; - // set address of targeted slave - txAddress = address; - // reset tx buffer iterator vars - txBufferIndex = 0; - txBufferLength = 0; -} - -void TwoWire::beginTransmission(int address) -{ - beginTransmission((uint8_t)address); -} - -// -// Originally, 'endTransmission' was an f(void) function. -// It has been modified to take one parameter indicating -// whether or not a STOP should be performed on the bus. -// Calling endTransmission(false) allows a sketch to -// perform a repeated start. -// -// WARNING: Nothing in the library keeps track of whether -// the bus tenure has been properly ended with a STOP. It -// is very possible to leave the bus in a hung state if -// no call to endTransmission(true) is made. Some I2C -// devices will behave oddly if they do not see a STOP. -// -uint8_t TwoWire::endTransmission(uint8_t sendStop) -{ - // transmit buffer (blocking) - uint8_t ret = twi_writeTo(txAddress, txBuffer, txBufferLength, 1, sendStop); - // reset tx buffer iterator vars - txBufferIndex = 0; - txBufferLength = 0; - // indicate that we are done transmitting - transmitting = 0; - return ret; -} - -// This provides backwards compatibility with the original -// definition, and expected behaviour, of endTransmission -// -uint8_t TwoWire::endTransmission(void) -{ - return endTransmission(true); -} - -// must be called in: -// slave tx event callback -// or after beginTransmission(address) -size_t TwoWire::write(uint8_t data) -{ - if(transmitting){ - // in master transmitter mode - // don't bother if buffer is full - if(txBufferLength >= BUFFER_LENGTH){ - setWriteError(); - return 0; - } - // put byte in tx buffer - txBuffer[txBufferIndex] = data; - ++txBufferIndex; - // update amount in buffer - txBufferLength = txBufferIndex; - }else{ - // in slave send mode - // reply to master - twi_transmit(&data, 1); - } - return 1; -} - -// must be called in: -// slave tx event callback -// or after beginTransmission(address) -size_t TwoWire::write(const uint8_t *data, size_t quantity) -{ - if(transmitting){ - // in master transmitter mode - for(size_t i = 0; i < quantity; ++i){ - write(data[i]); - } - }else{ - // in slave send mode - // reply to master - twi_transmit(data, quantity); - } - return quantity; -} - -// must be called in: -// slave rx event callback -// or after requestFrom(address, numBytes) -int TwoWire::available(void) -{ - return rxBufferLength - rxBufferIndex; -} - -// must be called in: -// slave rx event callback -// or after requestFrom(address, numBytes) -int TwoWire::read(void) -{ - int value = -1; - - // get each successive byte on each call - if(rxBufferIndex < rxBufferLength){ - value = rxBuffer[rxBufferIndex]; - ++rxBufferIndex; - } - - return value; -} - -// must be called in: -// slave rx event callback -// or after requestFrom(address, numBytes) -int TwoWire::peek(void) -{ - int value = -1; - - if(rxBufferIndex < rxBufferLength){ - value = rxBuffer[rxBufferIndex]; - } - - return value; -} - -void TwoWire::flush(void) -{ - // XXX: to be implemented. -} - -// behind the scenes function that is called when data is received -void TwoWire::onReceiveService(uint8_t* inBytes, int numBytes) -{ - // don't bother if user hasn't registered a callback - if(!user_onReceive){ - return; - } - // don't bother if rx buffer is in use by a master requestFrom() op - // i know this drops data, but it allows for slight stupidity - // meaning, they may not have read all the master requestFrom() data yet - if(rxBufferIndex < rxBufferLength){ - return; - } - // copy twi rx buffer into local read buffer - // this enables new reads to happen in parallel - for(uint8_t i = 0; i < numBytes; ++i){ - rxBuffer[i] = inBytes[i]; - } - // set rx iterator vars - rxBufferIndex = 0; - rxBufferLength = numBytes; - // alert user program - user_onReceive(numBytes); -} - -// behind the scenes function that is called when data is requested -void TwoWire::onRequestService(void) -{ - // don't bother if user hasn't registered a callback - if(!user_onRequest){ - return; - } - // reset tx buffer iterator vars - // !!! this will kill any pending pre-master sendTo() activity - txBufferIndex = 0; - txBufferLength = 0; - // alert user program - user_onRequest(); -} - -// sets function called on slave write -void TwoWire::onReceive( void (*function)(int) ) -{ - user_onReceive = function; -} - -// sets function called on slave read -void TwoWire::onRequest( void (*function)(void) ) -{ - user_onRequest = function; -} - -// Preinstantiate Objects ////////////////////////////////////////////////////// - -TwoWire Wire = TwoWire(); - diff --git a/libraries/Wire/Wire.h b/libraries/Wire/Wire.h deleted file mode 100644 index 702f37d..0000000 --- a/libraries/Wire/Wire.h +++ /dev/null @@ -1,85 +0,0 @@ -/* - TwoWire.h - TWI/I2C library for Arduino & Wiring - Copyright (c) 2006 Nicholas Zambetti. All right reserved. - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts -*/ - -#ifndef TwoWire_h -#define TwoWire_h - -#include -#include "Stream.h" - -#define BUFFER_LENGTH 32 - -// WIRE_HAS_END means Wire has end() -#define WIRE_HAS_END 1 - -class TwoWire : public Stream -{ - private: - static uint8_t rxBuffer[]; - static uint8_t rxBufferIndex; - static uint8_t rxBufferLength; - - static uint8_t txAddress; - static uint8_t txBuffer[]; - static uint8_t txBufferIndex; - static uint8_t txBufferLength; - - static uint8_t transmitting; - static void (*user_onRequest)(void); - static void (*user_onReceive)(int); - static void onRequestService(void); - static void onReceiveService(uint8_t*, int); - public: - TwoWire(); - void begin(); - void begin(uint8_t); - void begin(int); - void end(); - void setClock(uint32_t); - void beginTransmission(uint8_t); - void beginTransmission(int); - uint8_t endTransmission(void); - uint8_t endTransmission(uint8_t); - uint8_t requestFrom(uint8_t, uint8_t); - uint8_t requestFrom(uint8_t, uint8_t, uint8_t); - uint8_t requestFrom(uint8_t, uint8_t, uint32_t, uint8_t, uint8_t); - uint8_t requestFrom(int, int); - uint8_t requestFrom(int, int, int); - virtual size_t write(uint8_t); - virtual size_t write(const uint8_t *, size_t); - virtual int available(void); - virtual int read(void); - virtual int peek(void); - virtual void flush(void); - void onReceive( void (*)(int) ); - void onRequest( void (*)(void) ); - - inline size_t write(unsigned long n) { return write((uint8_t)n); } - inline size_t write(long n) { return write((uint8_t)n); } - inline size_t write(unsigned int n) { return write((uint8_t)n); } - inline size_t write(int n) { return write((uint8_t)n); } - using Print::write; -}; - -extern TwoWire Wire; - -#endif - diff --git a/libraries/Wire/src/Wire.cpp b/libraries/Wire/src/Wire.cpp new file mode 100644 index 0000000..7944fcb --- /dev/null +++ b/libraries/Wire/src/Wire.cpp @@ -0,0 +1,330 @@ +/* + TwoWire.cpp - TWI/I2C library for Wiring & Arduino + Copyright (c) 2006 Nicholas Zambetti. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts +*/ + +extern "C" { + #include + #include + #include + #include "twi.h" +} + +#include "Wire.h" + +// Initialize Class Variables ////////////////////////////////////////////////// + +uint8_t TwoWire::rxBuffer[BUFFER_LENGTH]; +uint8_t TwoWire::rxBufferIndex = 0; +uint8_t TwoWire::rxBufferLength = 0; + +uint8_t TwoWire::txAddress = 0; +uint8_t TwoWire::txBuffer[BUFFER_LENGTH]; +uint8_t TwoWire::txBufferIndex = 0; +uint8_t TwoWire::txBufferLength = 0; + +uint8_t TwoWire::transmitting = 0; +void (*TwoWire::user_onRequest)(void); +void (*TwoWire::user_onReceive)(int); + +// Constructors //////////////////////////////////////////////////////////////// + +TwoWire::TwoWire() +{ +} + +// Public Methods ////////////////////////////////////////////////////////////// + +void TwoWire::begin(void) +{ + rxBufferIndex = 0; + rxBufferLength = 0; + + txBufferIndex = 0; + txBufferLength = 0; + + twi_init(); +} + +void TwoWire::begin(uint8_t address) +{ + twi_setAddress(address); + twi_attachSlaveTxEvent(onRequestService); + twi_attachSlaveRxEvent(onReceiveService); + begin(); +} + +void TwoWire::begin(int address) +{ + begin((uint8_t)address); +} + +void TwoWire::end(void) +{ + twi_disable(); +} + +void TwoWire::setClock(uint32_t frequency) +{ + TWBR = ((F_CPU / frequency) - 16) / 2; +} + +uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity, uint32_t iaddress, uint8_t isize, uint8_t sendStop) +{ + if (isize > 0) { + // send internal address; this mode allows sending a repeated start to access + // some devices' internal registers. This function is executed by the hardware + // TWI module on other processors (for example Due's TWI_IADR and TWI_MMR registers) + + beginTransmission(address); + + // the maximum size of internal address is 3 bytes + if (isize > 3){ + isize = 3; + } + + // write internal register address - most significant byte first + while (isize-- > 0) + write((uint8_t)(iaddress >> (isize*8))); + endTransmission(false); + } + + // clamp to buffer length + if(quantity > BUFFER_LENGTH){ + quantity = BUFFER_LENGTH; + } + // perform blocking read into buffer + uint8_t read = twi_readFrom(address, rxBuffer, quantity, sendStop); + // set rx buffer iterator vars + rxBufferIndex = 0; + rxBufferLength = read; + + return read; +} + +uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity, uint8_t sendStop) { + return requestFrom((uint8_t)address, (uint8_t)quantity, (uint32_t)0, (uint8_t)0, (uint8_t)sendStop); +} + +uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity) +{ + return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)true); +} + +uint8_t TwoWire::requestFrom(int address, int quantity) +{ + return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)true); +} + +uint8_t TwoWire::requestFrom(int address, int quantity, int sendStop) +{ + return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)sendStop); +} + +void TwoWire::beginTransmission(uint8_t address) +{ + // indicate that we are transmitting + transmitting = 1; + // set address of targeted slave + txAddress = address; + // reset tx buffer iterator vars + txBufferIndex = 0; + txBufferLength = 0; +} + +void TwoWire::beginTransmission(int address) +{ + beginTransmission((uint8_t)address); +} + +// +// Originally, 'endTransmission' was an f(void) function. +// It has been modified to take one parameter indicating +// whether or not a STOP should be performed on the bus. +// Calling endTransmission(false) allows a sketch to +// perform a repeated start. +// +// WARNING: Nothing in the library keeps track of whether +// the bus tenure has been properly ended with a STOP. It +// is very possible to leave the bus in a hung state if +// no call to endTransmission(true) is made. Some I2C +// devices will behave oddly if they do not see a STOP. +// +uint8_t TwoWire::endTransmission(uint8_t sendStop) +{ + // transmit buffer (blocking) + uint8_t ret = twi_writeTo(txAddress, txBuffer, txBufferLength, 1, sendStop); + // reset tx buffer iterator vars + txBufferIndex = 0; + txBufferLength = 0; + // indicate that we are done transmitting + transmitting = 0; + return ret; +} + +// This provides backwards compatibility with the original +// definition, and expected behaviour, of endTransmission +// +uint8_t TwoWire::endTransmission(void) +{ + return endTransmission(true); +} + +// must be called in: +// slave tx event callback +// or after beginTransmission(address) +size_t TwoWire::write(uint8_t data) +{ + if(transmitting){ + // in master transmitter mode + // don't bother if buffer is full + if(txBufferLength >= BUFFER_LENGTH){ + setWriteError(); + return 0; + } + // put byte in tx buffer + txBuffer[txBufferIndex] = data; + ++txBufferIndex; + // update amount in buffer + txBufferLength = txBufferIndex; + }else{ + // in slave send mode + // reply to master + twi_transmit(&data, 1); + } + return 1; +} + +// must be called in: +// slave tx event callback +// or after beginTransmission(address) +size_t TwoWire::write(const uint8_t *data, size_t quantity) +{ + if(transmitting){ + // in master transmitter mode + for(size_t i = 0; i < quantity; ++i){ + write(data[i]); + } + }else{ + // in slave send mode + // reply to master + twi_transmit(data, quantity); + } + return quantity; +} + +// must be called in: +// slave rx event callback +// or after requestFrom(address, numBytes) +int TwoWire::available(void) +{ + return rxBufferLength - rxBufferIndex; +} + +// must be called in: +// slave rx event callback +// or after requestFrom(address, numBytes) +int TwoWire::read(void) +{ + int value = -1; + + // get each successive byte on each call + if(rxBufferIndex < rxBufferLength){ + value = rxBuffer[rxBufferIndex]; + ++rxBufferIndex; + } + + return value; +} + +// must be called in: +// slave rx event callback +// or after requestFrom(address, numBytes) +int TwoWire::peek(void) +{ + int value = -1; + + if(rxBufferIndex < rxBufferLength){ + value = rxBuffer[rxBufferIndex]; + } + + return value; +} + +void TwoWire::flush(void) +{ + // XXX: to be implemented. +} + +// behind the scenes function that is called when data is received +void TwoWire::onReceiveService(uint8_t* inBytes, int numBytes) +{ + // don't bother if user hasn't registered a callback + if(!user_onReceive){ + return; + } + // don't bother if rx buffer is in use by a master requestFrom() op + // i know this drops data, but it allows for slight stupidity + // meaning, they may not have read all the master requestFrom() data yet + if(rxBufferIndex < rxBufferLength){ + return; + } + // copy twi rx buffer into local read buffer + // this enables new reads to happen in parallel + for(uint8_t i = 0; i < numBytes; ++i){ + rxBuffer[i] = inBytes[i]; + } + // set rx iterator vars + rxBufferIndex = 0; + rxBufferLength = numBytes; + // alert user program + user_onReceive(numBytes); +} + +// behind the scenes function that is called when data is requested +void TwoWire::onRequestService(void) +{ + // don't bother if user hasn't registered a callback + if(!user_onRequest){ + return; + } + // reset tx buffer iterator vars + // !!! this will kill any pending pre-master sendTo() activity + txBufferIndex = 0; + txBufferLength = 0; + // alert user program + user_onRequest(); +} + +// sets function called on slave write +void TwoWire::onReceive( void (*function)(int) ) +{ + user_onReceive = function; +} + +// sets function called on slave read +void TwoWire::onRequest( void (*function)(void) ) +{ + user_onRequest = function; +} + +// Preinstantiate Objects ////////////////////////////////////////////////////// + +TwoWire Wire = TwoWire(); + diff --git a/libraries/Wire/src/Wire.h b/libraries/Wire/src/Wire.h new file mode 100644 index 0000000..702f37d --- /dev/null +++ b/libraries/Wire/src/Wire.h @@ -0,0 +1,85 @@ +/* + TwoWire.h - TWI/I2C library for Arduino & Wiring + Copyright (c) 2006 Nicholas Zambetti. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts +*/ + +#ifndef TwoWire_h +#define TwoWire_h + +#include +#include "Stream.h" + +#define BUFFER_LENGTH 32 + +// WIRE_HAS_END means Wire has end() +#define WIRE_HAS_END 1 + +class TwoWire : public Stream +{ + private: + static uint8_t rxBuffer[]; + static uint8_t rxBufferIndex; + static uint8_t rxBufferLength; + + static uint8_t txAddress; + static uint8_t txBuffer[]; + static uint8_t txBufferIndex; + static uint8_t txBufferLength; + + static uint8_t transmitting; + static void (*user_onRequest)(void); + static void (*user_onReceive)(int); + static void onRequestService(void); + static void onReceiveService(uint8_t*, int); + public: + TwoWire(); + void begin(); + void begin(uint8_t); + void begin(int); + void end(); + void setClock(uint32_t); + void beginTransmission(uint8_t); + void beginTransmission(int); + uint8_t endTransmission(void); + uint8_t endTransmission(uint8_t); + uint8_t requestFrom(uint8_t, uint8_t); + uint8_t requestFrom(uint8_t, uint8_t, uint8_t); + uint8_t requestFrom(uint8_t, uint8_t, uint32_t, uint8_t, uint8_t); + uint8_t requestFrom(int, int); + uint8_t requestFrom(int, int, int); + virtual size_t write(uint8_t); + virtual size_t write(const uint8_t *, size_t); + virtual int available(void); + virtual int read(void); + virtual int peek(void); + virtual void flush(void); + void onReceive( void (*)(int) ); + void onRequest( void (*)(void) ); + + inline size_t write(unsigned long n) { return write((uint8_t)n); } + inline size_t write(long n) { return write((uint8_t)n); } + inline size_t write(unsigned int n) { return write((uint8_t)n); } + inline size_t write(int n) { return write((uint8_t)n); } + using Print::write; +}; + +extern TwoWire Wire; + +#endif + -- cgit v1.2.3-18-g5258