I meant JTAG debuggers like on Silabs 8051, Atmel AVR, NXP ARM and so on.
There is abolute no way to inspect something on the fly.
Whenever you want to see something, the CPU stops completely.




Hard words to tell, that you absolute not understand, what I said.

The point is quite simple:

The debugging value was only stored inside the SRAM, which need almost no time.
Then in the main loop with absolute lowest priority the value was sent, whenever the SBUF was empty.
If a new debug value was reached but the current was not sent yet, then the new was rejected.

I use it with great success over years, never any side effects are seen.

Its on my view the best way.


Peter