Irena NOVAKOVIC wrote:
> it is a test of the printf function and it doesn't compile (it says :
>
> thermotest.c:73: error 98: conflict with previous definition of
> 'putchar' for attribute 'wparam'
> thermotest.c:73: error 52: Actual Argument type different from
> declaration 1
> from type 'unsigned-char'
> to type 'char')
>
> i defined putchar and getchar(communications on the serial port of
> PIC) before main and in main i put printf("test");. The code of
> putchar and getchar works when i put it directly in main without
> calling the printf function. So the problem might be the wrong
> declaration of those functions (or in the wrong place).
In device/include/pic16/stdio.h you will find a macro declarations like
this:
#define PUTCHAR(arg) void putchar(unsigned char arg) __wparam
This is the proper way to define a "putchar" function, just write:
PUTCHAR(my_putchar)
{
blah...
blah...
}
There is nothing similar for getchar, but definition for getchar is
char getchar(void);
no dark keywords here!:-)
hope this solves your problem...
Vangelis Rokas
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