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_6

6. USART

Warren Gay¹  

(1)

St. Catharines, ON, Canada

 

The Blue Pill PCB provides one GPIO-controlled LED to communicate by. Needless to say, this would be limiting if it were all you had. Perhaps the best early-development peripheral to pursue for communication is the USART (Universal Synchronous/Asynchronous Receiver/Transmitter).

This chapter will examine how to coax an STM32 USART to speak to your desktop through a USB serial adapter cable. A second project will demonstrate the same USART using two FreeRTOS tasks and a message queue.

USART/UART Peripheral

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