Pin status under sleep & Pin usage

RE: Pin status under sleep & Pin usage

ketiljo — Thu, 07 Nov 2019 10:34:59 GMT

1. Correct, the frequencies below 10 kHz will not affect the radio.

2. If you need UART or SPI, you should use other pins. You may have reduced RX performance of the low freq I/O pins are used for this.

RE: Pin status under sleep & Pin usage

Alex.Pan — Thu, 07 Nov 2019 01:07:52 GMT

Hi ketiljo:

Thanks for your feedback!

So:

1. If the input/output frequcny on Low freqyency I/O pins below 10kHz will not affect the radio function, right?

2. How about Low freqyency I/O pins configured as SPI(UART etc) interface? Will they affect the radio function when the baudrate above 10kHz?

Thanks very much!

Best regards!

RE: Pin status under sleep & Pin usage

ketiljo — Wed, 06 Nov 2019 11:27:51 GMT

1. All pins will be retained in sleep mode.

2. Low freqyency I/O means that the radio may be affected by the data activity on the pins, but only when the radio is active (TX or RX). At all other times, you can use it as you want.

3. This pin can be assigned to be a reset pin instead of P0.18. But it will not take the role as the reset pin until after the device is out of POR (power on reset).