STM32f107 CAN滤波器设置

STM32f107 CAN滤波器设置

F107有CAN1、CAN2两路，其滤波设置类似

stm32f10x系列CAN滤波器：

两种模式：列表模式、屏蔽位模式

有分组**，*CAN1：0->13组，CAN2：14->28组；

滤波器组时间是***同或***关系
           

以下只讨论屏蔽位模式、扩展帧滤波器

u32 ID1=0x10203008;//此ID与实际传输ID存在右移3位的关系，即实际传输ID为0x02040601
u32 ID2=0x50607008;
/
//CAN1
/
CAN_FilterInitStructure.CAN_FilterNumber=0;	//滤波器0组				
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//屏蔽位模式
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;//滤波器32位
CAN_FilterInitStructure.CAN_FilterIdHigh= (ID1&0xFFFF0000)>>16;	//取ID1高四位0x1020
CAN_FilterInitStructure.CAN_FilterIdLow= (ID1|CAN_ID_EXT)&0xFFFF; //取ID1低四位0x3008
CAN_FilterInitStructure.CAN_FilterMaskIdHigh= 0x00FF;		//高四位 ，FF为必须匹配，即收到的帧ID必须为0x0020	
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0;	//低四位	
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FilterFIFO0;	
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;		
CAN_FilterInit(&CAN_FilterInitStructure);		

CAN_FilterInitStructure.CAN_FilterNumber=1;	//滤波器1组				
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//屏蔽位模式
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;//滤波器32位
CAN_FilterInitStructure.CAN_FilterIdHigh= (ID2&0xFFFF0000)>>16;	//取ID1高四位0x5060
CAN_FilterInitStructure.CAN_FilterIdLow= (ID2|CAN_ID_EXT)&0xFFFF; //取ID1低四位0x7008
CAN_FilterInitStructure.CAN_FilterMaskIdHigh= 0xFFFF;		//高四位 ，FF为必须匹配，即收到的帧ID必须为0x5060	
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0;	//低四位	
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FilterFIFO0;	
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;		
CAN_FilterInit(&CAN_FilterInitStructure);	


/
//CAN2
/
CAN_FilterInitStructure.CAN_FilterNumber=14;	//滤波器14组				
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//屏蔽位模式
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;//滤波器32位
CAN_FilterInitStructure.CAN_FilterIdHigh= (ID1&0xFFFF0000)>>16;	//取ID1高四位0x1020
CAN_FilterInitStructure.CAN_FilterIdLow= (ID1|CAN_ID_EXT)&0xFFFF; //取ID1低四位0x3008
CAN_FilterInitStructure.CAN_FilterMaskIdHigh= 0x00FF;		//高四位 ，FF为必须匹配，即收到的帧ID必须为0x0020	
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0;	//低四位	
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FilterFIFO0;	
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;		
CAN_FilterInit(&CAN_FilterInitStructure);		

CAN_FilterInitStructure.CAN_FilterNumber=15;	//滤波器15组				
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//屏蔽位模式
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;//滤波器32位
CAN_FilterInitStructure.CAN_FilterIdHigh= (ID2&0xFFFF0000)>>16;	//取ID1高四位0x5060
CAN_FilterInitStructure.CAN_FilterIdLow= (ID2|CAN_ID_EXT)&0xFFFF; //取ID1低四位0x7008
CAN_FilterInitStructure.CAN_FilterMaskIdHigh= 0xFFFF;		//高四位 ，FF为必须匹配，即收到的帧ID必须为0x5060	
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0;	//低四位	
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FilterFIFO0;	
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;		
CAN_FilterInit(&CAN_FilterInitStructure);	
           

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