关于STM32F407的CAN过滤器设置问题

boufbou

CAN_FilterInitStruct.CAN_FilterNumber = 0;
CAN_FilterInitStruct.CAN_FilterMode = CAN_FilterMode_IdList;   
CAN_FilterInitStruct.CAN_FilterScale = CAN_FilterScale_16bit;
CAN_FilterInitStruct.CAN_FilterIdHigh = candata1;
CAN_FilterInitStruct.CAN_FilterIdLow = candata2;
CAN_FilterInitStruct.CAN_FilterMaskIdHigh = candata3;
CAN_FilterInitStruct.CAN_FilterMaskIdLow = candata4;
CAN_FilterInitStruct.CAN_FilterFIFOAssignment = CAN_Filter_FIFO1;  
CAN_FilterInitStruct.CAN_FilterActivation = ENABLE;
CAN_FilterInit(&CAN_FilterInitStruct);
//第2组列表
CAN_FilterInitStruct.CAN_FilterNumber = 1;
CAN_FilterInitStruct.CAN_FilterMode = CAN_FilterMode_IdList;   
CAN_FilterInitStruct.CAN_FilterScale = CAN_FilterScale_16bit;
CAN_FilterInitStruct.CAN_FilterIdHigh = candata5;
CAN_FilterInitStruct.CAN_FilterIdLow = candata6;
CAN_FilterInitStruct.CAN_FilterMaskIdHigh = candata7;
CAN_FilterInitStruct.CAN_FilterMaskIdLow = candata8;
CAN_FilterInitStruct.CAN_FilterFIFOAssignment = CAN_Filter_FIFO1;  
CAN_FilterInitStruct.CAN_FilterActivation = ENABLE;
CAN_FilterInit(&CAN_FilterInitStruct);

我想问一下两组过滤器都关联到FIFO1中,那是否每读一次FIFO1就会自动更新内容,这个FIFO1能装多少符合条件的ID号,谢谢回复!