View log in nrf52840 Dongle

RE: View log in nrf52840 Dongle

Einar Thorsrud — Thu, 10 Nov 2022 07:47:55 GMT

If you have external UART-USB briges, you can use that. If you use the logger module with the UART backend you just update the TX pin for UART in your project's sdk_config.h by setting NRF_LOG_BACKEND_UART_TX_PIN to the pin you have routed out (for one way UART logging without flow control - which is what the logger module use - only a single pin is needed).

Alternatively, if you don't want to use any additional HW you can use USB-CDC. The logger module does not support it, but the CLI does, so that is one option. Another is to handle the logging yourself and then you can look at the USB CDC ACM example for how to use CDC ACM.

RE: View log in nrf52840 Dongle

Venkat RAM — Wed, 09 Nov 2022 17:25:58 GMT

Hai, I am intending on UART and USB

because i do have only one JTAG, But here i am using 3 Dongle

Kindly do needful

RE: View log in nrf52840 Dongle

Einar Thorsrud — Mon, 07 Nov 2022 12:41:29 GMT

Hi,

The nRF52840 dongle doe snot have an onboard debugger, so in order to use RTT you will need to connect an external debugger as already mentioned. Alternatively you can use UART as a log backend, but then you will need an external USB-UART bridge of some sort, as that is also not present on the dongle. (this is one of the reasons a DK is much more suitable as a development platform than the dongle).

RE: View log in nrf52840 Dongle

mytzyiay — Sat, 05 Nov 2022 03:34:21 GMT

Are you intending to use RTT, UART pins, or USB? If RTT, then you'll want to connect via JTAG and then run the RTT viewer app.

I've set up consoles via UART pins and USB on this same board but since I was using NCS, my configuration steps probably won't help here.