Uart communication between nrf52832 dev kit and another MCU.

RE: Uart communication between nrf52832 dev kit and another MCU.

Karl Ylvisaker — Wed, 17 Aug 2022 00:45:43 GMT

Hello,

nrf5xfanboy is correct about the CTS/RTS pins - they are most useful these days if you will be communicating at very high speeds with a system that is not always ready to receive the incoming data, for instance.

I am not sure if I understood your 'recorder' question correctly but you can indeed use the development kit as a debugger for your other SoC through the SWD interface. I have attached an image that shows how this can be done:

For convenience I would recommend that you program your DK with the regular 'blinky' example before you use it as the debugger for your other SoC, so that you can easily verify that the program was written to the correct Chip (since the DK should keep blinking as usual).

Best regards,
Karl

RE: Uart communication between nrf52832 dev kit and another MCU.

ssilva047 — Tue, 16 Aug 2022 17:29:12 GMT

Thank you for informacion.

So just use RX, TX and GND for serial communication via UART.

Regarding the recorder, I want to use the Debug In Connect pins, pins 2, 4, VCC and GND. to write to the module that I am developing, as shown in the image below

I'm trying this possibility to test the module in the future we are going to buy the segger programming recorder.

RE: Uart communication between nrf52832 dev kit and another MCU.

nRF5xFanboy — Tue, 16 Aug 2022 16:59:47 GMT

you can connect the pins like this

But the cts & rts are not mandatory nowadays (they are from the past where device where much slower, they are handshake signals.)

some more information:
https://www.codrey.com/embedded-systems/rs232-serial-communication/

About the second question:
yes, you can use another development kit as a recorder (spy-monitor) just google on rs232 splitter cable pintout

note: understand the difference between
dce-dce connection (computer to computer) versus dce-dte (computer to peripheral)
they are the reason the pinout schema's show cross-connections or straight connections