Problem with link and compile with CoIde don't print [debug] latitude and Longitude

[virtualrobotix]

Dear Friend,
i have some problem with compilation of code with CoIde because when i start the app all work fine but the printf don't work fine and in [debug] latitude i don't see the value .

Move Detected INT1 src:0x60
Move Detected INT1 src:0x60
OTAA Join Success
[Debug]: latitude: [Debug]: tempr: 31 Bat: 4040mv
[Debug]: ACC X:0000 Y:0000 Z:FF00

This is my result could be a problem of printf function but i'm using retarget in librari configuration so could be right choose .
Can you confirm the link to correct toolchain and send me more detail about the configuration of linker and compiler please .
Best
Roberto