UARTE to USB to PuTTY on nRF52840DK

RE: UARTE to USB to PuTTY on nRF52840DK

JosteinBrovold — Wed, 25 Oct 2023 18:34:33 GMT

SOLUTION!

Check with a scope (which I shouldve done alot earlier), and the data that was being sent was infact 0x00.

I set the tx_message to not be a const array, and the data is being sent and received correctly in Termite

RE: UARTE to USB to PuTTY on nRF52840DK

JosteinBrovold — Wed, 25 Oct 2023 17:57:01 GMT

Tried Termite, and here I actually get "data" [00] * len(message). So the data is actually sent with correct length.

GND should be the same, as its only a USB cable. I am able to program the DK through the same cable.

Ill try to get ahold of an oscilloscope in that case, to check that the correct data is being sent

RE: UARTE to USB to PuTTY on nRF52840DK

JosteinBrovold — Wed, 25 Oct 2023 17:36:15 GMT

Its enabling HW_FLOW control, with a writing error 😛

RE: UARTE to USB to PuTTY on nRF52840DK

hmolesworth — Wed, 25 Oct 2023 17:34:55 GMT

Does for us, 115200 and 230400 in regular use .. looking at the code snippet, what is "UARTE_HW_CLOW_CONTROL_ENABLED"? .. We don't use flow control .. Maybe try Termite to see if it works differently.

Edit: .. and maybe check the common GND is really common

RE: UARTE to USB to PuTTY on nRF52840DK

JosteinBrovold — Wed, 25 Oct 2023 17:29:32 GMT

Good tip, but nope, tried setting all of them to high drive, but still nothing.

Does the J-Link handle all the different speeds? Or do I have to match the baudrate with the J-Link ATSAM?

RE: UARTE to USB to PuTTY on nRF52840DK

hmolesworth — Wed, 25 Oct 2023 17:22:59 GMT

Maybe check the Tx output pin on the DK is set to high-drive H0H1 after the serial port is initialised; the level might be too soggy if using standard drive S0S1.

RE: UARTE to USB to PuTTY on nRF52840DK

JosteinBrovold — Wed, 25 Oct 2023 16:08:24 GMT

Still the same issue

RE: UARTE to USB to PuTTY on nRF52840DK

hmolesworth — Tue, 24 Oct 2023 20:23:48 GMT

Better to use DTR/DSR on the terminal (which enables the USB) and disable flow control on the nRF; that works with Termite and (if I remember correctly) also with PuTTY

RE: UARTE to USB to PuTTY on nRF52840DK

JosteinBrovold — Tue, 24 Oct 2023 16:06:59 GMT

I went through the settings, WRT UART settings I had enabled Flow Control (Which should be enabled if Im using Flow Control on the nRF?), and I dont see how the keyboard settings will have anything to do with the problem when Im not trying to send data to the device (yet), just receive from it.

Im not running any sample projects, I have written the drivers and code using the MDK.

The DK was connected through a USB pass through on my Keyboard, but I tried connecting it to the front panel on the computer aswell, but the results were the same. On the DK its connected to J2

RE: UARTE to USB to PuTTY on nRF52840DK

Simonr — Tue, 24 Oct 2023 12:53:24 GMT

Can you double check that you've set the recommended settings for the PuTTY terminal? What sample project are you running when trying to see the logging information here? I assume you're using the J-Link and J2 connector on the DK as the interface here? How is the DK connected to the computer exactly? Is it connected to a USB hub, or do you have another USB dongle connected directly next to it? USB 3.0 devices cause a lot of noise if I recall correctly that might affect nearby ports.

Best regards,

Simon