S32Kのトピックchange UART Baudrate

change UART Baudrate

Hanchun — Tue, 17 Jan 2023 09:34:43 GMT

I make a project in S32DS， but I can't change UART Baudrate. If I change in the table, it will say error

Re: change UART Baudrate

PetrS — Tue, 17 Jan 2023 13:08:51 GMT

Hi,

what S32DS and SDK version do you use? I tried lpuart_echo_s32k144 demo example in S32DS2.2 and SDK 3.0.3 and the baudrate can be changed. Just modify Baudrate item, generate PE code and build project. No error is seen and project is built, elf generated.

BR, Petr

Re: change UART Baudrate

Hanchun — Wed, 18 Jan 2023 01:36:25 GMT

I am using S32DS for arm v2.2 and SDK 3.0. I tried again, and 3000000 is not OK. but others are OK. why 3000000 is not OK, how can I solve it?

Re: change UART Baudrate

PetrS — Wed, 18 Jan 2023 13:29:23 GMT

Hi,

the error displayed is below

So the LPUART clock selected in the clock component is low and 3Mbit cannot be calculated for it.
By default SIRC is selected (8MHz), I think. Go to clock_manager component and select different clock source with higher frequency for your LPUART module.

BR, Petr

Re: change UART Baudrate

Hanchun — Sat, 28 Jan 2023 11:06:40 GMT

Got it, thank you!