Check if data is received through USART

[Indois]

Hello,

I would like to check if any data is received through USART and then use that data further in the program. I am using STM32L0 series MCU and Low Layer libraries in STM32CubeIDE environment. Are there any simple ways to code that?

Thank you.

[Tesla DeLorean]

Check the status register, use interrupts? Pretty basic stuff.

The UART holds a single character, so need to clear it as it arrives so it doesn't overrun.

Complexity comes with how you manage the data into a buffer, and process it.