Printing float with printf using mesh SDK CMake

[nrbrook]

I'm compiling a custom application using the CMake scripts in the nRF mesh SDK, and I'm trying to print floats using vsnprintf (I'm guessing the problem is the same as with printf), but nothing is output. I've tried adding 

add_link_options("-u _printf_float")

But it still doesn't work. Any suggestions?

My hardware is nRF52DK (nRF52832, which I believe is Cortex-M4f, and the CMake scripts add -mfloat-abi=hard -mfpu=fpv4-sp-d16)

[Vidar Berg]

Hi,

Could you try snprintf() to see if it gives you the same result? It should work as long as you build with -u _printf_float

[nrbrook]

It's because I was adding the flag with quotes.

add_link_options(-u _printf_float)

works. Thanks