#ifndef _DELAY_H_
#define _DELAY_H_

#include "main.h"

#define CPU_FREQUENCY_MHZ    80		// STM32ʱÖÓÖ÷Ƶ

void delay_us(__IO uint32_t delay);
void delay_ms(__IO uint32_t delay);
void delay_tick(uint32_t ticks);


#endif /* DELAY_H_ */