UART over standard drive, low frequency I/O only GPIO pins

RE: UART over standard drive, low frequency I/O only GPIO pins

Kenneth — Wed, 05 May 2021 07:29:07 GMT

All yes.

Kenneth

RE: UART over standard drive, low frequency I/O only GPIO pins

rolandash — Tue, 04 May 2021 14:41:18 GMT

Some extension to the original question:

1) though a 921000 bps rate UART tx/rx should not use these pins around radio path, but cts/rts signal should be OK to be assigned to these pins?

2) the CS signal in a SPI connect is also OK to be assigned to these pins?

3) if an external PA (i.e., nrf21540) is connected to 52833, the TX_EN/RX_EN signal should also be fine to be connected to these pins near radio path?

Thank you.

/Roland

RE: UART over standard drive, low frequency I/O only GPIO pins

Prasad — Mon, 30 Nov 2020 21:31:48 GMT

Thanks!

RE: UART over standard drive, low frequency I/O only GPIO pins

Kenneth — Mon, 30 Nov 2020 12:19:19 GMT

1. Yes, that is fine.

2. No.

3. You can still use default 19200baud for DTM, since the UART is inactive during test, it is only used to start and stop test.

4. Yes.