Re: [avr-libc-dev] Re: printf in avr-libc

[Joerg Wunsch]

As daniel_laptop wrote:

> > Well, actually not all of our supported devices have a UART.  Also,
> > UART speed depends on system clock, so an automatic implied
> > initialization is impossible anyway.

> You can do a global #define on the command line (makefile) with "-D"

Sure.  But that doesn't help in the case of a library, since the
library objects are already pre-compiled.  One could use a global
variable to supply the system clock, but in that case, i'd rather
prefer that the application programmer just supplies the entire
uart_putc() function itself (which is only a couple of lines of code),
and integrates the UART initialization into their usual ioinit()
function that's basically required in any actual project anyway.

-- 
J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/