Esempi in C++ (Cpp) per MY_NVIC_PriorityGroupConfig

Esempio n. 1

File: sys.c Progetto: LYF-HXW/BANLANCE-CAR

//设置NVIC 
//NVIC_PreemptionPriority:抢占优先级
//NVIC_SubPriority       :响应优先级
//NVIC_Channel           :中断编号
//NVIC_Group             :中断分组 0~4
//注意优先级不能超过设定的组的范围!否则会有意想不到的错误
//组划分:
//组0:0位抢占优先级,4位响应优先级
//组1:1位抢占优先级,3位响应优先级
//组2:2位抢占优先级,2位响应优先级
//组3:3位抢占优先级,1位响应优先级
//组4:4位抢占优先级,0位响应优先级
//NVIC_SubPriority和NVIC_PreemptionPriority的原则是,数值越小,越优先	   
void MY_NVIC_Init(u8 NVIC_PreemptionPriority,u8 NVIC_SubPriority,u8 NVIC_Channel,u8 NVIC_Group)	 
{ 
	u32 temp;	
	MY_NVIC_PriorityGroupConfig(NVIC_Group);//设置分组
	temp=NVIC_PreemptionPriority<<(4-NVIC_Group);	  
	temp|=NVIC_SubPriority&(0x0f>>NVIC_Group);
	temp&=0xf;//取低四位  
	NVIC->ISER[NVIC_Channel/32]|=(1<<NVIC_Channel%32);//使能中断位(要清除的话,相反操作就OK) 
	NVIC->IP[NVIC_Channel]|=temp<<4;//设置响应优先级和抢断优先级   	    	  				   
} 

Esempio n. 2

File: sys.c Progetto: Crazepony/crazepony-remote-none

//设置NVIC 
//NVIC_PreemptionPriority:抢占优先级
//NVIC_SubPriority       :响应优先级
//NVIC_Channel           :中断编号
//NVIC_Group             :中断分组 0~4
//注意优先级不能超过设定的组的范围!否则会有意想不到的错误
//组划分:
//组0:0位抢占优先级,4位响应优先级
//组1:1位抢占优先级,3位响应优先级
//组2:2位抢占优先级,2位响应优先级
//组3:3位抢占优先级,1位响应优先级
//组4:4位抢占优先级,0位响应优先级
//NVIC_SubPriority和NVIC_PreemptionPriority的原则是,数值越小,越优先	   
void MY_NVIC_Init(u8 NVIC_PreemptionPriority,u8 NVIC_SubPriority,u8 NVIC_Channel,u8 NVIC_Group)	 
{ 
	u32 temp;	
//	u8 IPRADDR=NVIC_Channel/4;  //每组只能存4个,得到组地址 
	u8 IPROFFSET=NVIC_Channel%4;//在组内的偏移
	IPROFFSET=IPROFFSET*8+4;    //得到偏移的确切位置
	MY_NVIC_PriorityGroupConfig(NVIC_Group);//设置分组
	temp=NVIC_PreemptionPriority<<(4-NVIC_Group);	  
	temp|=NVIC_SubPriority&(0x0f>>NVIC_Group);
	temp&=0xf;//取低四位

	if(NVIC_Channel<32)NVIC->ISER[0]|=1<<NVIC_Channel;//使能中断位(要清除的话,相反操作就OK)
	else NVIC->ISER[1]|=1<<(NVIC_Channel-32);    
//	NVIC->IPR[IPRADDR]|=temp<<IPROFFSET;//设置响应优先级和抢断优先级   	    	  				   
}