By clicking 'Accept Cookies', you give your consent to their usage. They also help us to monitor its performance and to make our advertising and marketing relevant to you. Replace the code in your main source file with the following.Cookie Notice.Ĭookies and similar technologies enable us to provide you with an optimized user experience and functionality of our website. Initializing the UART module by specifying the operating parameters. We will begin with a simple program that will read bytes via UART and echo them back in groups of 4. In this mode the DMA controller will automatically feed the entire buffer to the UART byte-by-byte and only raise an interrupt once the entire buffer is sent. It will only be interrupted by occasional UART interrupts. Then add the C11 and C12 signals to Analyzer2Go and make another recording. Remove the breakpoint and restart the program. Replace the code in your main source file with this. We will now use the interrupt-based transmission to free up some of the CPU cycles. While the transmission is active, the program cannot do anything else and has to wait for it to complete.

Try typing some text in the terminal window and see how after every 4 characters the program echoes them back: Now we will explore the UART timings using a logic analyzer. We will show how to use direct mode, interrupt-based mode and DMA-controlled mode and will use a logic analyzer to compare the precise timings of various events.

Stm32cubemx uart receive interrupt