CAN ID过滤器问题

只看该作者 · 2015-2-11 19:52

我想设置过滤器过滤两组ID号，如01H，02H，现设置如下

  CAN_FilterInitStructure.CAN_FilterNumber = 1;
  CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0200;
  CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0xFFFF;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0xFFFF;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0;
  CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);

  CAN_FilterInitStructure.CAN_FilterNumber = 2;
  CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0400;
  CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0xFFFF;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0xFFFF;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0;
  CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);

我设置了两个过滤器组，都分配至FIFO0，可为什么目前只能接收ID 01H的数据咧，问题出在那里咧？求指导！

1万 · 2015-2-11 21:50

看看我的代码:
CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdList;
CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
CAN_FilterInitStructure.CAN_FilterIdHigh = MOTOR_RETID/8192;
CAN_FilterInitStructure.CAN_FilterIdLow = MOTOR_RETID%8192*8+CAN_ID_EXT;