?? putchar.c
字號:
/* PUTCHAR.C
The ANSI "putchar" function.
The putchar function writes the character c to the
output-stream pointed to by stream.
The function returns the character written. If an writing
error occurs the putchar shall return EOF.
$Name: V3_34O V3_34N Spiff7 V3_34M V3_34L V3_34K V3_34J V3_34I V3_34H V3_34G $
Copyright 1986 - 1999 IAR Systems. All rights reserved.
*/
//#include <stdio.h>
#include <iom128.h>
int putchar(int ch)
{
while (!(UCSR0A & 0x20))
; //wait xmit ready
UDR0 = (unsigned char) ch;
return (ch); //send the character
}
/*
int putchar1(int ch)
{
while (!(UCSR1A & 0x20))
; //wait xmit ready
UDR1 = (unsigned char) ch;
return (ch); //send the character
}
*/
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