Job_SignsPads/STM32/Code/STM32-IAP/SYSTEM/delay.c

#include "delay.h"
#include "sys.h"
////////////////////////////////////////////////////////////////////////////////// 	 
//<2F><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>ucos,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>.
#if SYSTEM_SUPPORT_UCOS
#include "includes.h"					//ucos ʹ<><CAB9>	  
#endif
//////////////////////////////////////////////////////////////////////////////////  
 
//ʹ<><CAB9>SysTick<63><6B><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD>ģʽ<C4A3><CABD><EFBFBD>ӳٽ<D3B3><D9BD>й<EFBFBD><D0B9><EFBFBD>(֧<><D6A7>ucosii)
//<2F><><EFBFBD><EFBFBD>delay_us,delay_ms
//STM32F4<46><34><EFBFBD><EFBFBD>-<2D>⺯<EFBFBD><E2BAAF><EFBFBD>汾
//<2F>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>̣<EFBFBD>http://mcudev.taobao.com		
//********************************************************************************
//<2F>޸<EFBFBD>˵<EFBFBD><CBB5>
//<2F><>
////////////////////////////////////////////////////////////////////////////////// 
 
static u8  fac_us=0;//us<75><73>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>			   
static u16 fac_ms=0;//ms<6D><73>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><>ucos<6F><73>,<2C><><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ms<6D><73>

#ifdef OS_CRITICAL_METHOD 	//<2F><><EFBFBD><EFBFBD>OS_CRITICAL_METHOD<4F><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,˵<><CBB5>ʹ<EFBFBD><CAB9>ucosII<49><49>.
//systick<63>жϷ<D0B6><CFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ʹ<><CAB9>ucosʱ<73>õ<EFBFBD>
void SysTick_Handler(void)
{				   
	OSIntEnter();		//<2F><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
    OSTimeTick();       //<2F><><EFBFBD><EFBFBD>ucos<6F><73>ʱ<EFBFBD>ӷ<EFBFBD><D3B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>               
    OSIntExit();        //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><D0BB><EFBFBD><EFBFBD>ж<EFBFBD>
}
#endif
			   
//<2F><>ʼ<EFBFBD><CABC><EFBFBD>ӳٺ<D3B3><D9BA><EFBFBD>
//<2F><>ʹ<EFBFBD><CAB9>ucos<6F><73>ʱ<EFBFBD><CAB1>,<2C>˺<EFBFBD><CBBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>ucos<6F><73>ʱ<EFBFBD>ӽ<EFBFBD><D3BD><EFBFBD>
//SYSTICK<43><4B>ʱ<EFBFBD>ӹ̶<D3B9>ΪHCLKʱ<4B>ӵ<EFBFBD>1/8
//SYSCLK:ϵͳʱ<CDB3><CAB1>
void delay_init(u8 SYSCLK)
{
#ifdef OS_CRITICAL_METHOD 	//<2F><><EFBFBD><EFBFBD>OS_CRITICAL_METHOD<4F><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,˵<><CBB5>ʹ<EFBFBD><CAB9>ucosII<49><49>.
	u32 reload;
#endif
 	SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);
	fac_us=SYSCLK/8;		//<2F><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD>ʹ<EFBFBD><CAB9>ucos,fac_us<75><73><EFBFBD><EFBFBD>Ҫʹ<D2AA><CAB9>
	    
#ifdef OS_CRITICAL_METHOD 	//<2F><><EFBFBD><EFBFBD>OS_CRITICAL_METHOD<4F><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,˵<><CBB5>ʹ<EFBFBD><CAB9>ucosII<49><49>.
	reload=SYSCLK/8;		//ÿ<><C3BF><EFBFBD>ӵļ<D3B5><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>λΪK	   
	reload*=1000000/OS_TICKS_PER_SEC;//<2F><><EFBFBD><EFBFBD>OS_TICKS_PER_SEC<45>趨<EFBFBD><E8B6A8><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>
							//reloadΪ24λ<34>Ĵ<EFBFBD><C4B4><EFBFBD>,<2C><><EFBFBD><EFBFBD>ֵ:16777216,<2C><>168M<38><4D>,Լ<><D4BC>0.7989s<EFBFBD><EFBFBD><EFBFBD><EFBFBD>	
	fac_ms=1000/OS_TICKS_PER_SEC;//<2F><><EFBFBD><EFBFBD>ucos<6F><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>ٵ<EFBFBD>λ	   
	SysTick->CTRL|=SysTick_CTRL_TICKINT_Msk;   	//<2F><><EFBFBD><EFBFBD>SYSTICK<43>ж<EFBFBD>
	SysTick->LOAD=reload; 	//ÿ1/OS_TICKS_PER_SEC<45><43><EFBFBD>ж<EFBFBD>һ<EFBFBD><D2BB>	
	SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk;   	//<2F><><EFBFBD><EFBFBD>SYSTICK
#else
	fac_ms=(u16)fac_us*1000;//<2F><>ucos<6F><73>,<2C><><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF>ms<6D><73>Ҫ<EFBFBD><D2AA>systickʱ<6B><CAB1><EFBFBD><EFBFBD>   
#endif
}								    

#ifdef OS_CRITICAL_METHOD 	//<2F><><EFBFBD><EFBFBD>OS_CRITICAL_METHOD<4F><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,˵<><CBB5>ʹ<EFBFBD><CAB9>ucosII<49><49>.
//<2F><>ʱnus
//nus:Ҫ<><D2AA>ʱ<EFBFBD><CAB1>us<75><73>.		    								   
void delay_us(u32 nus)
{		
	u32 ticks;
	u32 told,tnow,tcnt=0;
	u32 reload=SysTick->LOAD;	//LOAD<41><44>ֵ	    	 
	ticks=nus*fac_us; 			//<2F><>Ҫ<EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD><EFBFBD>	  		 
	tcnt=0;
	OSSchedLock();				//<2F><>ֹucos<6F><73><EFBFBD>ȣ<EFBFBD><C8A3><EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD>us<75><73>ʱ
	told=SysTick->VAL;        	//<2F>ս<EFBFBD><D5BD><EFBFBD>ʱ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ֵ
	while(1)
	{
		tnow=SysTick->VAL;	
		if(tnow!=told)
		{	    
			if(tnow<told)tcnt+=told-tnow;//<2F><><EFBFBD><EFBFBD>ע<EFBFBD><D7A2>һ<EFBFBD><D2BB>SYSTICK<43><4B>һ<EFBFBD><D2BB><EFBFBD>ݼ<EFBFBD><DDBC>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><CDBF><EFBFBD><EFBFBD><EFBFBD>.
			else tcnt+=reload-tnow+told;	    
			told=tnow;
			if(tcnt>=ticks)break;//ʱ<>䳬<EFBFBD><E4B3AC>/<2F><><EFBFBD><EFBFBD>Ҫ<EFBFBD>ӳٵ<D3B3>ʱ<EFBFBD><CAB1>,<2C><><EFBFBD>˳<EFBFBD>.
		}  
	};
	OSSchedUnlock();			//<2F><><EFBFBD><EFBFBD>ucos<6F><73><EFBFBD><EFBFBD> 									    
}
//<2F><>ʱnms
//nms:Ҫ<><D2AA>ʱ<EFBFBD><CAB1>ms<6D><73>
void delay_ms(u16 nms)
{	
		if(OSRunning==OS_TRUE&&OSLockNesting==0)//<2F><><EFBFBD><EFBFBD>os<6F>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>	   
	{		  
		if(nms>=fac_ms)//<2F><>ʱ<EFBFBD><CAB1>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ucos<6F><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
		{
   			OSTimeDly(nms/fac_ms);	//ucos<6F><73>ʱ
		}
		nms%=fac_ms;				//ucos<6F>Ѿ<EFBFBD><D1BE>޷<EFBFBD><DEB7>ṩ<EFBFBD><E1B9A9>ôС<C3B4><D0A1><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>ʽ<EFBFBD><CABD>ʱ    
	}
	delay_us((u32)(nms*1000));		//<2F><>ͨ<EFBFBD><CDA8>ʽ<EFBFBD><CABD>ʱ 
}
#else  //<2F><><EFBFBD><EFBFBD>ucosʱ
//<2F><>ʱnus
//nusΪҪ<CEAA><D2AA>ʱ<EFBFBD><CAB1>us<75><73>.	
//ע<><D7A2>:nus<75><73>ֵ,<2C><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>798915us
void delay_us(u32 nus)
{		
	u32 temp;	    	 
	SysTick->LOAD=nus*fac_us; //ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>	  		 
	SysTick->VAL=0x00;        //<2F><><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD><EFBFBD>
	SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk ;          //<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD> 
	do
	{
		temp=SysTick->CTRL;
	}
	while((temp&0x01)&&!(temp&(1<<16)));//<2F>ȴ<EFBFBD>ʱ<EFBFBD>䵽<EFBFBD><E4B5BD>   
	SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk;       //<2F>رռ<D8B1><D5BC><EFBFBD><EFBFBD><EFBFBD>
	SysTick->VAL =0X00;       //<2F><><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD><EFBFBD>	 
}
//<2F><>ʱnms
//ע<><D7A2>nms<6D>ķ<EFBFBD>Χ
//SysTick->LOADΪ24λ<34>Ĵ<EFBFBD><C4B4><EFBFBD>,<2C><><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱΪ:
//nms<=0xffffff*8*1000/SYSCLK
//SYSCLK<4C><4B>λΪHz,nms<6D><73>λΪms
//<2F><>168M<38><4D><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,nms<=798ms 
void delay_xms(u16 nms)
{	 		  	  
	u32 temp;		   
	SysTick->LOAD=(u32)nms*fac_ms;//ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(SysTick->LOADΪ24bit)
	SysTick->VAL =0x00;           //<2F><><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD><EFBFBD>
	SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk ;          //<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>  
	do
	{
		temp=SysTick->CTRL;
	}
	while((temp&0x01)&&!(temp&(1<<16)));//<2F>ȴ<EFBFBD>ʱ<EFBFBD>䵽<EFBFBD><E4B5BD>   
	SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk;       //<2F>رռ<D8B1><D5BC><EFBFBD><EFBFBD><EFBFBD>
	SysTick->VAL =0X00;       //<2F><><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD><EFBFBD>	  	    
} 
//<2F><>ʱnms 
//nms:0~65535
void delay_ms(u16 nms)
{	 	 
	u8 repeat=nms/540;	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>540,<2C>ǿ<EFBFBD><C7BF>ǵ<EFBFBD>ijЩ<C4B3>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD>ܳ<EFBFBD>Ƶʹ<C6B5><CAB9>,
						//<2F><><EFBFBD>糬Ƶ<E7B3AC><C6B5>248M<38><4D>ʱ<EFBFBD><CAB1>,delay_xms<6D><73><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD>ʱ541ms<6D><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	u16 remain=nms%540;
	while(repeat)
	{
		delay_xms(540);
		repeat--;
	}
	if(remain)delay_xms(remain);
	
} 
#endif