Maximum baudrate error on CubeMX on USART2 STM32F030C8

[Alef Rosa]

Posted on June 22, 2018 at 22:03

Good afternoon!

My name is Alef, I'm trying to set up the usart2 baudRate from STM32F030C8 to 2Mbps but I can not succeed.

I'm using 48MHz clock so according to the manual, at 16 samples, I should be able to reach up to 3Mbps, but CubeMx says the limit is 500kbps. But if I go in code and manually put 2000000 it seems to work normally.

My questions are:

• I wonder if this is a Bug from CubeMx?
• If not, why this lower limit?
• Using USART2 with 2Mbps briefly, could it generate any problems in the future?

Thank you all.

#cubemx-stm32f103c8t6 #baudrate

[Imen.D]

Posted on June 25, 2018 at 11:22

Hello

alefkta

,

Can you please confirm that you are using the latest STM32CubeMx version 4.0.

With Regards,

Imen

[Mohamed Mansouri]

Posted on June 25, 2018 at 17:39

Hello

Almeida_Costa_Rosa.A

,

Thanks for your feedback.

This is an issuein CubeMX. In fact, as you said,

the maximum value of Baud Rate should be 3 MBits/s in case of 16 samples and 6 MBits/s in case of 8 samples.

It will be fixed next release.

Please do not hesitate to contact me for further details.

Thanks and regards,

Mohamed

[Alef Rosa]

Posted on June 25, 2018 at 17:18

Yes.

The version of STM32CubeMx is 4.26.0.

Thank you.

[Alef Rosa]

Posted on June 26, 2018 at 15:52

Thank you all.