printf function override question?

Aaditya Kandibanda said:

but where should i point *f?

The MSP430 example code in Overriding the fputc() and fputs() functions shows that the FILE *f argument is not used in the overridden functions. I think that means if you are only dealing with one output device the fputc can ignore the file argument, which will be set to stdout when called from printf.

Aaditya Kandibanda said:

I read online and figured that the way to reroute the printf() output is by overriding the fputc() function.

An alternative is to install a user-defined driver which can be attached to specific streams - see Using printf() to output to a user-defined device.