MCUXpresso SDK中的主题 Re: i.Max RT1176 UART Hardware Flow control CTS RTS enabling and using

i.Max RT1176 UART Hardware Flow control CTS RTS enabling and using

MN19000 — Tue, 26 Mar 2024 20:46:47 GMT

I am using i.MX RT1170 UART10 CTS RTS enabled.

// Enable RX, TX

config.enableTx = true;

config.enableRx = true;

// Enable RTS, CTS

config.enableRxRTS = true;

config.enableTxCTS = true;

Does lpuart driver automatically changes the polarity of CTS/RTS, or do need to do it manually ?

If yes, what are the commands.

Thanks,

Re: i.Max RT1176 UART Hardware Flow control CTS RTS enabling and using

kerryzhou — Wed, 27 Mar 2024 03:16:08 GMT

Hi @MN19000 ,

If you want to the hardware flow control, and enable the related register, then the UART IP will automatically change the CTS RTS, you don't need to use other other code to control the polarity.

I highly recommend you to read this application note:

https://www.nxp.com/docs/en/application-note/AN12679.pdf

This is the related software:

https://www.nxp.com/docs/en/application-note-software/AN12679SW.zip

Then you will know the details.

Wish it helps you!

If you still have question about it, please kindly let me know.

If your question is solved, please help me to mark the correct answer, just to close this case, thanks.

Any new issues, welcome to create the new case.

Best Regards,

Kerry

Re: i.Max RT1176 UART Hardware Flow control CTS RTS enabling and using

MN19000 — Wed, 27 Mar 2024 19:44:27 GMT

Thank you Kerry.

That solved my problem.

Please close this case.