STM32f107 CAN濾波器設定

STM32f107 CAN濾波器設定

F107有CAN1、CAN2兩路，其濾波設定類似

stm32f10x系列CAN濾波器：

兩種模式：清單模式、屏蔽位模式

有分組**，*CAN1：0->13組，CAN2：14->28組；

濾波器組時間是***同或***關系
           

以下隻讨論屏蔽位模式、擴充幀濾波器

u32 ID1=0x10203008;//此ID與實際傳輸ID存在右移3位的關系，即實際傳輸ID為0x02040601
u32 ID2=0x50607008;
/
//CAN1
/
CAN_FilterInitStructure.CAN_FilterNumber=0;	//濾波器0組				
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//屏蔽位模式
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;//濾波器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為必須比對，即收到的幀ID必須為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;	//濾波器1組				
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//屏蔽位模式
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;//濾波器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為必須比對，即收到的幀ID必須為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;	//濾波器14組				
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//屏蔽位模式
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;//濾波器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為必須比對，即收到的幀ID必須為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;	//濾波器15組				
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//屏蔽位模式
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;//濾波器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為必須比對，即收到的幀ID必須為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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