As Chris Kuethe wrote:
> The avr-libc stdio page is a good read. That's where I go every time I
> have to be reminded of how to use printf on an avr. But try this on
> for size:
At least, that will do the job on real hardware (which Joel is also
interested in). Currently, I don't have an idea what simulavrxx would
do with any kind of device IO. I think it's got an option to
commicate it through a TCP channel some way.
For the old simulavr (which I believe Joel also wants to compare),
there's a couple of #if 0 statements in the code that, when removing
them, allows for standard IO ports to print their value on stdout, so
you could write up an stdio backend like:
static int
port_putchar(char c, FILE *stream)
{
PORTA = c;
return 0;
}
int
main(void)
{
DDRA = 0xff;
stdout = &mystdout;
printf_P(PSTR("Hello, world!\n"));
return 0;
}
That's probably sufficient for the purpose.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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