TwoWire Rework - added missing Slave mode using DMA/Interrupts and updated Master mode using DMA #284
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This was referenced Sep 1, 2014
m-mcgowan
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Sep 4, 2014
TwoWire Rework - added missing Slave mode using DMA/Interrupts and updated Master mode using DMA
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@zsup How can we know when a firmware with those changes has been released? I would love to try slow i2c speed. Thanks! |
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Lots of goodies added:
1)Added mssing Slave mode capability
2)Updated Master mode
3)Use of DMA + Interrupts
4)Added optional Wire.setSpeed() method which should be called before Wire.begin()
5)Added optional Wire.stretchClock() method for clock stretching
Hardware Test Setup:
Core 1 <=> Core 2
SDA <=> SDA : connect a pull-up(1.5K to 10K) resistor to 3.3V
SCL <=> SCL : connect a pull-up(1.5K to 10K) resistor to 3.3V
GND <=> GND
Firmware Test Code:
Master Reader <=> Slave Sender : Test code over here: http://arduino.cc/en/Tutorial/MasterReader
Master Sender <=> Slave Reader : Test code over here: http://arduino.cc/en/Tutorial/MasterWriter