what should be used to send data on Bluetooth?

[vohra alihussain]

hello, 

I am newer to nrf. I am using nrf52832 development kit and using soft device 5.0.

I have confusion with two function with nrf_log_info and printf?

which should be used to send data on Bluetooth?

[Turbo J]

Neither function should be used.

[vohra alihussain]

then what should use?