Arduino Tic library: warnings with Arduino Uno Wifi Rev2

Support Motor controllers/drivers and motors
1

when compiling for this board a sketch using TicI2C these warnings are given:

C:\Users\Gebruiker\Desktop\GOSSE-NIEKE\sketchbook\libraries\Tic\Tic.cpp: In member function ‘virtual void TicI2C::getSegment(TicCommand, uint8_t, uint8_t, void*)’:
C:\Users\Gebruiker\Desktop\GOSSE-NIEKE\sketchbook\libraries\Tic\Tic.cpp:220:65: warning: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:
uint8_t byteCount = Wire.requestFrom(_address, (uint8_t)length);
^
In file included from C:\Users\Gebruiker\Desktop\GOSSE-NIEKE\sketchbook\libraries\Tic/Tic.h:15:0,
from C:\Users\Gebruiker\Desktop\GOSSE-NIEKE\sketchbook\libraries\Tic\Tic.cpp:1:
C:\Users\Gebruiker\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\libraries\Wire\src/Wire.h:62:13: note: candidate 1: uint8_t TwoWire::requestFrom(int, int)
uint8_t requestFrom(int, int);
^~~~~~~~~~~
C:\Users\Gebruiker\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\libraries\Wire\src/Wire.h:60:13: note: candidate 2: virtual uint8_t TwoWire::requestFrom(uint8_t, size_t)
uint8_t requestFrom(uint8_t, size_t);
^~~~~~~~~~~

can these warnings be ignored?

thanks in advance,
rolf meesters

2

i’m sorry, now the warnings have disappeared.
i’ve no clue why.

rolf meesters

3

well, i’ve a clue.
with a fresh compile the warnings are given.
repeating compile with just a small change does not show the warnings.
so, i guess my question stays: is it safe to ignore them.

rolf

4

Hello, Rolf.

Yes, that warning is safe to ignore. It is caused by some quirks of Arduino’s requestFrom() function and differences in what parameter types it takes across different platforms; we will look into what we can change to avoid it. Thanks for letting us know that it is an issue for the Uno Wifi Rev2.

Kevin