Stm_common/stm32 通用函数/Common/Delay1.h

#ifndef __DELAY_H_
#define __DELAY_H_

#include <stm32f10x.h>

#if 1
void Dly1us ( unsigned int DelayVal );
void Dly10us ( unsigned int DelayVal );
void Dly100us ( unsigned int DelayVal );

extern unsigned int SystemClockFreq;
#define DLY_PARA_US	(SystemClockFreq*1.0/8500000)		//延时us参数
#define DLY_CALL_US	(8)									//调用us耗时，自定义应< DLY_PARA_US(譬如8.47)
#define delayUs(x) { 					 				\
	unsigned int _dcnt = (DLY_PARA_US*x-DLY_CALL_US);   \
	while(_dcnt-- > 0);		 		 	 				\
}

#define  delay_us(us)   delayUs(us)
#define  delay_ms(ms)   delayUs(ms*1000)


//STM32F103CBT6测试结果:
//#define DLY_CALL_US	(8)								//调用us耗时，自定义
//106.4ms -> 10.6ms -> 1.06ms
//90us-114us -> 16us-19us -> 9us

#else

void delay_init ( u8 SYSCLK );
void delay_ms ( u16 nms );
void delay_us ( u32 nus );
void Delay ( vu32 nCount );

#endif



#endif