I²C with fischertechnik RoboPRO

The new release RoboPRO 3.1.3 includes I²C support.

What Is I²C?

I²C I-square-C stands for Inter Integrated Circuit. I²C is also often referred at as TWI or Two Wire Interface, although technical differences exist but are beyond the scope of this short introduction. 

I²C defines a bus to which devices are connected with two wires: 
  • one wire for clock signal, and 
  • another wire for data signal. 

An I²C bus is managed by a master and the other devices are slaves: 
  • The master sets the clock and selects the slave to talk with. 
  • The slaves answer to the master. 
  • Each slave device has a unique address coded on 7 bits, from 0 to 127.

​The fischertechnik Robo TX is the master.

Some addresses are reserved as 0x00~0x07, or are already used by the RoboTX and Robotics TXT controllers as  0x50~0x57.

References

For a more in-depth technical information, please refer to 

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