Lpc2000

what is printf expecting back from putchar?
what is the return value of your printf? if printf is returning 
number less than the character count then printf is not likeing the 
return value from putchar()


Gus

--- In lpc2000@yahoogroups.com, "gustavo_sagasti" 
<gustavo_sagasti@y...> wrote:
> 
> Hi:
> I 'm working with Keil and GNU Compiler, and I try to use the 
printf 
> function. I initialised the UART0 and the putchar function works 
> fine. But the printf doesn't work. It only works if I use it as 
printf
> ("H"), but if I use printf("Hello"), it doesn't work.
> 
> This is the putchar function...
> 
> int putchar(int ch)  {                  /* Write character to 
Serial 
> Port    */
> 
>   if (ch == '\n')  {
>     while (!(U0LSR & 0x20));
>     U0THR = CR;                      /* output CR */
>   }
>   while (!(U0LSR & 0x20));
>   return (U0THR = ch);
> }
> I also include the stdio.h library. Do I have to include something 
> else to have the printf function working correctly?
> 
> Thanks