Beginning STM32: Developing with FreeRTOS, libopencm3, and GCC

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2024

W. GayBeginning STM32Maker Innovations Serieshttps://doi.org/10.1007/979-8-8688-0199-0_11

11. I2C

Warren Gay¹  

(1)

St. Catharines, ON, Canada

 

The I2C bus is a convenient hardware system mainly because it requires only two wires for communication. The bus is also known by other names, such as the IIC (inter-integrated circuit) or TWI (two-wire interface). Phillips Semiconductors developed the I2C bus, which Intel later extended with the SMBus protocol. These are largely interchangeable, but I will focus on I2C in this chapter.

With the utility of the I2C bus, it is no surprise that the STM32 platform includes a hardware peripheral for it. This chapter explores ...