STM32L431VCT6 USART as UART port configuration

subramani kp · ‎2018-03-01

Posted on March 01, 2018 at 12:31

Hi

How can we use USART as UART port in STM32L431VCT6 micro controller

I am looking for connecting two STM32L4 micro controller with TX, RX and Ground lines.

Already UART port is being used for other purpose and have only USART port

regards

subramani

#stm32l431vct6-usart-as-uart-port-configuration

subramani kp · ‎2018-03-01

Posted on March 01, 2018 at 18:44

Got the idea on USART using the link

http://www.st.com/content/ccc/resource/training/technical/product_training/4f/cc/bb/f7/04/99/41/66/STM32L4_Peripheral_USART.pdf/files/STM32L4_Peripheral_USART.pdf/jcr:content/translations/en.STM32L4_Peripheral_USART.pdf

thanks

View solution in original post

Andrew Neil · ‎2018-03-01

Posted on March 01, 2018 at 14:21

Essentially the same question:

https://community.st.com/0D50X00009XkWcwSAF

Are you two in the same class?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Tesla DeLorean · ‎2018-03-01

Posted on March 01, 2018 at 14:44

Ok, and what is the technical hurdle here? You can initialize all the USART, UART and LPUART using the UART library code in the Asynchronous case. They also function in materially the same way.

You will need to enable clocks, and pins to support each instantiation.

Suggest you confer with your supervisor, teacher or project lead, and review the manuals for the part and the examples furnished under the HAL/CubeMX repositories.

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subramani kp · ‎2018-03-01

Posted on March 01, 2018 at 18:44

Got the idea on USART using the link

http://www.st.com/content/ccc/resource/training/technical/product_training/4f/cc/bb/f7/04/99/41/66/STM32L4_Peripheral_USART.pdf/files/STM32L4_Peripheral_USART.pdf/jcr:content/translations/en.STM32L4_Peripheral_USART.pdf

thanks

Andrew Neil · ‎2018-03-02

Posted on March 02, 2018 at 10:29

I would say that probably 99.9% of USART usage is as a UART?

Who uses synchronous 'RS232' (sic) these days ?!

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

waclawek.jan · ‎2018-03-03

Posted on March 03, 2018 at 08:56

I use the STM32 USART module in synchronous mode a lot, to feed various shift-register-based peripherals, as SPI tends to be a much scarcer peripheral on the STM32s.

JW

Bogdan Golab · ‎2018-03-03

Posted on March 03, 2018 at 11:07

I use SPI all the time for various sensors but I have never thought about using USART in synchronous mode for that purpose.

If you could share some thoughts what makes you use USART instead of SPI.

Thanks in advance,

Bogdan

Andrew Neil · ‎2018-03-03

Posted on March 03, 2018 at 11:11

Well, there's always one!

:)

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Andrew Neil · ‎2018-03-03

Posted on March 03, 2018 at 11:11

that would be a topic for a separate thread.

maybe a blog post ... ?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Bogdan Golab · ‎2018-03-03

Posted on March 03, 2018 at 11:20

Right, blogs posts are better because the the content can be nicely structured.