kinetisKE04 UART0 and UART1

[jun1]

Thank you for your advice.

Is there any difference between UART0 and UART1 of kinetisKE04?
I am making MODBUS slave side communication software, and it works well with UART1, but with UART0, the transmission data is corrupted at baud rate 38400 or more.
Please let me know if you have anything.

jun.

[jun1 · Accepted solution]

thank you for your answer.
PTA3 is used for UART0_TX, but it seems that this port has an SCL port structure. So it worked fine if I pulled it up with more than 10 kilo ohms.
Thank you very much.

[nxf56274]

Hi,

When the Uart 0 and Uart 1 use as uart, it should be the same function. Uart0's TX pin has the modulation's function. But if you do not configure it, it should not influence the uart0. It's hard to say what's wrong with the uart0 when it is used in MODBUS at high baundrate.

Have a great day,
TIC

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