RTT feature with debugger

[dufguix]

I am using RTT (Real Time Transfer) for debug print purpose. (Instead of UART)

I discovered it when trying Rust for embedded.

I use it with STM32 C codebase.

Does anyone use it with Tinygo on RPI Pico ?

https://www.segger.com/products/debug-probes/j-link/technology/about-real-time-transfer/

[aykevl]

There is some limited RTT support included. You can use the -monitor and -serial=rtt flags to use RTT instead of the normal UART (or USB-CDC) output. I've used it successfully in the past on a nrf52832 chip, I haven't tried it on stm32.

Also see: https://tinygo.org/docs/reference/usage/important-options/

[dufguix]

Thanks.

For now, I am using tinygo with RPI Pico only.

Does it work with RPI Pico ? and RPI debugger ?

[aykevl]

You mean the Raspberry Pi Debug Probe? It probably works, but you would have to try to be sure.

[eliasnaur]

I'd love to see RTT support to handle all debugging with a single cable with the Pico debugger. Unfortunately, the bottom of the https://github.com/raspberrypi/debugprobe README lists "Possibly include RTT support" in the "TODO" section.

[aykevl]

Pretty sure I've used RTT support in the last week or so with the Pico Probe. Apart from that, I've used a ST Link V2 clone, where it worked fine.

[eliasnaur]

I just tested the Pico Probe with RTT and it worked! Thanks for letting me know.