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| # SoftwareWire | ||
| This is a library that creates a software I2C bus on any two pins. | ||
| More than one software I2C bus can be created. | ||
| It can be installed via the arduino library manager or manually by copying the files to your sketchbook\libraries folder. | ||
| The SoftwareWire is only I2C Master mode. | ||
| The clock pulse stretching is implemented, so the Slave can be another Arduino board. | ||
| See the Small_example.ino how to use it. Include the library, and create a SoftwareWire object with the sda and scl pin. After that is should be just like the real Wire library. | ||
| This is a library that creates a software I2C bus on any two pins. | ||
| More than one software I2C bus can be created. | ||
| It can be installed via the arduino library manager or manually by copying the files to your sketchbook\libraries folder. | ||
| The SoftwareWire is only I2C Master mode. | ||
| The clock pulse stretching is implemented, so the Slave can be another Arduino board. | ||
| See the Small_example.ino how to use it. Include the library, and create a SoftwareWire object with the sda and scl pin. After that is should be just like the real Wire library. | ||
|
|
||
| ### Version history | ||
| - Ver 1.5.0 | ||
| Added empty constructor | ||
| Updated printStatus() - by @bperrybap | ||
| Removed I2C Slave functions and added error message - by @bperrybap | ||
| - Ver 1.4.1 | ||
| GPLv3 licence | ||
| - Ver 1.4.0 | ||
| i2c_stop is safer with extra delay, and both SDA and SCL are first set low. | ||
| Thanks to Arduino.cc user fjuedes for testing. | ||
| - Ver 1.3.2 | ||
| Added library.properties file | ||
| - Ver 1.3.1 | ||
| Comment added | ||
| - Ver 1.3.0 | ||
| "SoftwareWire" release | ||
| - Ver 1.2.0 | ||
| Added keywords.txt - by @Leo72 | ||
| - Ver 1.1.0 | ||
| Selectable I2C speed (30Hz-140kHz) | ||
| - Ver 1.0.0 | ||
| ST7032i LCD driver compatibility | ||
| Bitbanged waveform modified to strictly adhere to I2C standard | ||
| Changed default speed to 100kHz | ||
| Ver 1.5.0 | ||
| - Added empty constructor | ||
| - Updated printStatus() - by @bperrybap | ||
| - Removed I2C Slave functions and added error message - by @bperrybap | ||
| Ver 1.4.1 | ||
| - GPLv3 licence | ||
| Ver 1.4.0 | ||
| - i2c_stop is safer with extra delay, and both SDA and SCL are first set low. | ||
| - Thanks to Arduino.cc user fjuedes for testing. | ||
| Ver 1.3.2 | ||
| - Added library.properties file | ||
| Ver 1.3.1 | ||
| - Comment added | ||
| Ver 1.3.0 | ||
| - "SoftwareWire" release | ||
| Ver 1.2.0 | ||
| - Added keywords.txt - by @Leo72 | ||
| Ver 1.1.0 | ||
| - Selectable I2C speed (30Hz-140kHz) | ||
| Ver 1.0.0 | ||
| - ST7032i LCD driver compatibility | ||
| - Bitbanged waveform modified to strictly adhere to I2C standard | ||
| - Changed default speed to 100kHz | ||
|
|
||
| ### Background information | ||
| I was asking for such a library here : http://forum.arduino.cc/index.php?topic=315898 | ||
| Testato was working on such a library here : http://forum.arduino.cc/index.php?topic=287008 | ||
| I added some glue to that code to make it behave like the Wire library. | ||
| This library started in 2008, and is now the result of the work of four. | ||
| Enjoy. | ||
| // 2008, Raul wrote a I2C with bit banging as an exercise. | ||
| // http://codinglab.blogspot.nl/2008/10/i2c-on-avr-using-bit-banging.html | ||
| // | ||
| // 2010-2012, Tod E. Kurt takes some tricks from Raul, | ||
| // and wrote the SoftI2CMaster library for the Arduino environment. | ||
| // https://github.com/todbot/SoftI2CMaster | ||
| // http://todbot.com/blog/ | ||
| // | ||
| // 2014-2015, Testato updates the SoftI2CMaster library to make it faster | ||
| // and to make it compatible with the Arduino 1.x API | ||
| // Also changed I2C waveform and added speed selection. | ||
| // | ||
| // 2015, Peter_n renames the library into "SoftwareWire", | ||
| // and made it a drop-in replacement for the Wire library. | ||
| I was asking for such a library here : http://forum.arduino.cc/index.php?topic=315898 | ||
| Testato was working on such a library here : http://forum.arduino.cc/index.php?topic=287008 | ||
| I added some glue to that code to make it behave like the Wire library. | ||
| This library started in 2008, and is now the result of the work of four. | ||
| Enjoy. | ||
| // 2008, Raul wrote a I2C with bit banging as an exercise. | ||
| // http://codinglab.blogspot.nl/2008/10/i2c-on-avr-using-bit-banging.html | ||
| // | ||
| // 2010-2012, Tod E. Kurt takes some tricks from Raul and wrote the SoftI2CMaster library for the Arduino environment. | ||
| // https://github.com/todbot/SoftI2CMaster | ||
| // http://todbot.com/blog/ | ||
| // | ||
| // 2014-2015, Testato updates the SoftI2CMaster library to make it faster and to make it compatible with the Arduino 1.x API | ||
| // Also changed I2C waveform and added speed selection. | ||
| // | ||
| // 2015, Peter_n renames the library into "SoftwareWire", and made it a drop-in replacement for the Wire library. |