CAN_FilterIdHigh：这一步是为了从32位的slave_id中提取出高16位作为CAN过滤器的ID高位部分。(u32)...
在16位宽的列表模式下,FilterIdHigh,FilterIdLow,FilterMaskIdHigh,FilterMaskIdLow这4个16位变量都是用来存储一个标准CAN ID,这样,就可以存放4个标准CAN ID了,需要注意地是,此种模式下,是不能处理扩展CANID,凡是需要过滤扩展CAN ID的,都是需要用到32位宽的模式。 由此可见,MCU的资源是非常非常有限的,并不能...
CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0xFFFF; CAN_FilterInitStructure.CAN_FilterMaskIdLow=0xFFFF; 3、对标准远程帧过滤:(只接收标准远程帧) CAN_FilterInitStructure.CAN_FilterIdHigh=((STD_ID《《21)&0xFFFF0000)》》16; CAN_FilterInitStructure.CAN_FilterIdLow=((STD_ID《《21)|(0x0))&0xFFFF...
CAN_InitStructure.CAN_BS1=CAN_BS1_8tq; CAN_InitStructure.CAN_BS2=CAN_BS2_7tq; CAN_InitStructure.CAN_Prescaler=45; CAN_Init(CAN1,&CAN_InitStructure); // CAN filter init CAN_FilterInitStructure.CAN_FilterNumber=0; CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; CAN_FilterInitStru...
所以CAN_FilterIdHigh=(0x10f46601>>13) & 0xffff CAN_FilterIdLow= ((0x10f46601<<3) | 0x04) & 0xffff 完整配置如下,筛选3*2=6个帧 static void CAN_Filter_Config() { CAN_FilterInitTypeDef CAN_FilterInitStructure; /*CAN过滤器初始化*/ ...
13.CAN_FilterInitStructure.CAN_FilterIdHigh=((ext_id<<3) >>16) &0xffff; //设置标识符寄存器高字节。 14.CAN_FilterInitStructure.CAN_FilterIdLow=(U16)(ext_id<<3) | CAN_ID_EXT; //设置标识符寄存器低字节 15.//这里也可以这样设置 16.//CAN_FilterInitStructure.CAN_FilterIdHigh=std_id<<5...
CAN_Filter CAN报文过滤 CAN_Receive CAN报文接收 CAN_IT CAN报文中断 CAN_Read_Data CAN报文读取 CAN报文接收模型 CAN Data Read SubSystem can接收时,即使不需要过滤,也需要添加一个过滤器(选择mask模式,32位,MASK ID HIGH LOW,ID HIGH LOW都填0,过滤器选择FIFO0,其他默认就好)。can过滤器,有两种模式,一种...
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; //32位 CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000; //32位MASK 如果是1则代表掩码处要检查,如果是0,代表不检查. CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000; CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000; //32位ID ...
CAN_Filter.FilterIdHigh = 0x0000; // 32BIT ID CAN_Filter.FilterIdLow = 0x0000; CAN_Filter.FilterMaskIdHigh = 0x0000; // 32BIT MASK CAN_Filter.FilterMaskIdLow = 0x0000; CAN_Filter.FilterFIFOAssignment = CAN_FILTER_FIFO0; //filter_0 --> FIFO0 ...
●2个16位过滤器,包括:STDID[10:0]、IDE、RTR和EXTID[17:15]位 2.3 过滤器组的过滤模式和位宽设置 过滤器组可以通过相应的CAN_FMR寄存器(CAN过滤器主控寄存器)配置。但是不是什么时候都可以直接配置,在配置一个过滤器组前,必须通过清除CAN_FAR寄存器(CAN过滤器激活寄存器)的FACT位,把它设置为禁用状态。然后才...