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UART vs LPUART

Vitaliy Freidovich

Hi,

I see that in the latest SDK 17.1.0 there seems to be no example for regular UART but only for LPUART.

That made me wonder if there is any advantage in any scenario to use regular UART over LPUART?

It seems that power consumption is much better with LPUART, data rate higher, interrupt to wake up from sleep.

So in what scenarios would it be recommended to use plain UART?

Also, where can I find an example for regular UART?

Thanks!

Vitaliy

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  • +1

    Hi,

    There is the the nrf5SDK(the one that you are using) and the nRF Connect SDK. We are slowly transitioning to the nRF Connect SDK and hence there will not be any new features etc. in the nRF5SDK. Hence I recommend you to begin working with the nRF Connect SDK. 

    The LPUART (Low Power UART) is better due to low power consumption while performing the UART functions. But in case you have certain hardware limitations and you can only spare two pins for UART, then you could opt for the normal UART. And also in cases where your main priority is to send the data and you are not much concerned about the current consumption, here too you could try using the normal UART.

    There are examples for UART and the Nordic UART Service in the Infocenter.

    Regards,

    Priyanka

Reply
  • +1

    Hi,

    There is the the nrf5SDK(the one that you are using) and the nRF Connect SDK. We are slowly transitioning to the nRF Connect SDK and hence there will not be any new features etc. in the nRF5SDK. Hence I recommend you to begin working with the nRF Connect SDK. 

    The LPUART (Low Power UART) is better due to low power consumption while performing the UART functions. But in case you have certain hardware limitations and you can only spare two pins for UART, then you could opt for the normal UART. And also in cases where your main priority is to send the data and you are not much concerned about the current consumption, here too you could try using the normal UART.

    There are examples for UART and the Nordic UART Service in the Infocenter.

    Regards,

    Priyanka

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