clock.h

AVR下载器设计progisp166

/*
  clock.h - part of USBasp

  Autor..........: Thomas Fischl <[e-mail]> 
  Description....: Provides functions for timing/waiting
  Licence........: Free under certain conditions. See Documentation.
  Creation Date..: 2005-02-23
  Last change....: 2006-11-16
*/

#ifndef __clock_h_included__
#define	__clock_h_included__

#define F_CPU           12000000L   /* 12MHz */
#define TIMERVALUE      TCNT0
#define CLOCK_T_320us	60

#ifdef __AVR_ATmega8__
#define TCCR0B  TCCR0
#endif

/* set prescaler to 64 */
#define clockInit()  TCCR0B = (1 << CS01) | (1 << CS00);

/* wait time * 320 us */
void clockWait(uint8_t time);

#endif /* __clock_h_included__ */