Where does printf print to?

RE: Where does printf print to?

Einar Thorsrud — Tue, 24 Nov 2015 06:48:44 GMT

You have to retarget printf() by using a custom _write() (If you were using Keil you would have to use a custom fputc() instead). This is implemented in the SDK, but you have to including components/libraries/uart/retarget.c in your Makefile. There are more details in this thread.

RE: Where does printf print to?

Protoneer — Mon, 23 Nov 2015 16:48:30 GMT

I see. Lets take CrossStudio out of the picture. If I use GCC and make files, where will the SDK example output it then?

RE: Where does printf print to?

Einar Thorsrud — Mon, 23 Nov 2015 10:11:40 GMT

I have no experience with CrossStudio, but it seems you have to customize __putchar(), which is used by printf().