Summary

In this chapter, we learned about the UART protocol, a fundamental communication method that’s widely used in embedded systems. We began by discussing the importance of communication protocols in embedded systems, emphasizing how UART, alongside SPI and I2C, facilitates seamless communication between microcontrollers and peripheral devices.

Next, we provided a detailed overview of the UART protocol while covering its operational principles, including how data is transmitted asynchronously using start and stop bits, and the role of parity in error checking. We also discussed how the baud rate, a critical aspect of UART communication, is configured to ensure synchronized data transfer between devices.

Then, we delved into the specifics of the STM32 UART peripheral, examining key registers such as the Status Register (USART_SR), Data Register (USART_DR), Baud Rate Register (USART_BRR), and Control Register 1 (USART_CR1). Understanding these registers is essential...