Radio.printDetails(); does nothing for MKR1010 but Radio.sprintfPrettyDetails(buffer); works fine???? about rf24 HOT 4 CLOSED

printf_begin(); is call after Serial is started. This code worked flawlessly with and RF-Nano but not for the MKR?

Our library's printf_begin() is just a helper function to integrate the RF24 library's printf() calls with the default Serial object, but it only does this for boards that can use printf()

Radio.sprintfPrettyDetails(buffer); works fine????

Of course it does, because it doesn't use printf(). It uses sprintf() (which uses buffers instead of a stream like printf() does). The functions sprintfPrettyDetails() and encodeRadioDetails() were designed as an alternative way to get debugging information on boards that don't support printf().

I think your confusion is really just from not understanding the difference between printf() and sprintf() functions from the C standard library (cstdio.h).

MKR1010 uses a ATSAMD21 chip

That board uses the Arduino SAMD core, which does not support printf().

RF-Nano uses ATmega328

That board just uses the Arduino AVR core which does support printf().

from rf24.

Has it been considered to use LibPrintf library.

Work fine with MKR1010.

from rf24.

No, we haven't considered using another library just for debugging output on some boards.

LibPrintf hasn't been updated in years. If there were problems, then we (and our users) would have to hope that the LibPrintf authors are still responsive... 👎

If you're using PlatformIO, then it would be easy to make RF24 use LibPrintf. You just need to add a #define to the build_flags.

build_flags =
  -Dprintf_P=printf

Otherwise, if you're using Arduino IDE with a board that doesn't support printf(), then you can use sprintfPrettyDetails().

from rf24.

No, we haven't considered using another library just for debugging output on some boards.

This isn't entirely true. We had started developing RF24Log but stopped when we couldn't decide on how to control verbosity (logging level) per origin of logs.

from rf24.