STM32f107CAN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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