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Chapter 18

Wired communication protocols

5 min read8 sections
In this chapter · 8 sections
  1. Comparison
  2. UART (serial)
  3. I2C
  4. SPI
  5. 1-Wire
  6. CAN bus
  7. RS-485 and Modbus RTU
  8. Choosing a bus

Modules talk to your board over a handful of standard buses.

Modules talk to your board over a handful of standard buses. I2C connects most sensors and displays with two wires, SPI handles fast devices, UART handles GPS and GSM modules, and RS-485 or CAN carries data across factories and vehicles.

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