I2C is perhaps the most commonly used bus to connect ICs together. As such, firmware engineers encounter it on most projects. In this post, we explain how I2C works, explore common bugs and investigate how to debug these issues.
The I2C bus is a very popular and powerful bus used for communication between a master (or multiple masters) and a single or multiple slave devices. The above figure illustrates how many different peripherals may share a bus which is connected to a processor through only 2 wires, which is one of the largest benefits that the I2C bus can give when compared to other interfaces