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/* { dg-do compile } */
/* { dg-options "-Os -fdump-tree-optimized" } */
/*
* License: GPL
* Copyright: (c) 2007 by Till Harbaum <till@harbaum.org>
* Copyright: (c) 2008 Wolfgang Moser, http://d81.de
*/
/* #include <avr/wdt.h> */
/* some declarations from the include above for ATMega8 */
#define _SFR_IO8(io_addr) (*(volatile unsigned char *)((io_addr) + 0x20))
#define TOV0 0
#define TCNT0 _SFR_IO8(0x32)
#define TIFR _SFR_IO8(0x38)
#define DDRC _SFR_IO8(0x14)
#define DDRD _SFR_IO8(0x11)
#define PORTC _SFR_IO8(0x15)
#define PORTD _SFR_IO8(0x12)
static void delay_wait_us( unsigned char timeout ) {
__asm__ __volatile__ ("wdr");
TCNT0 = timeout;
TIFR |= (1 << (TOV0));
/* wait until counter overflows */
while(!(TIFR & (1 << (TOV0))));
}
static void delay_wait_us_ms( unsigned char timeout ) {
delay_wait_us( timeout * 1000 );
}
void makeUseOfTimerWait( unsigned char val ) {
delay_wait_us( 10 );
DDRC |= 0x10;
delay_wait_us( 10 );
DDRD |= 0x20;
delay_wait_us( 20 );
PORTC &= ~0x10;
delay_wait_us( 10 );
PORTD &= ~0x20;
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
delay_wait_us_ms( 5 );
PORTC |= val & 0x10;
delay_wait_us( 10 );
PORTD |= val & 0x20;
delay_wait_us( 10 );
}
/* We should not inline the delay loops. */
/* { dg-final { scan-tree-dump "delay_wait_us" "optimized"} } */
/* { dg-final { scan-tree-dump "delay_wait_us_ms" "optimized"} } */
/* { dg-final { cleanup-tree-dump "optimized" } } */
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