static void CANFilterConfig_Scale16_IdMask(void)
{
CAN_FilterConfTypeDef sFilterConfig;
uint16_t StdIdArray1[10] ={0x7D1,0x7D2,0x7D3,0x7D4,0x7D5, //定义第一组标准CAN ID
0x7D6,0x7D7,0x7D8,0x7D9,0x7DA};
uint16_t StdIdArray2[10] ={0x751,0x752,0x753,0x754,0x755, //定义第二组标准CAN ID
0x756,0x757,0x758,0x759,0x75A};
uint16_t mask,tmp,i,num;
sFilterConfig.FilterNumber = 5; //使用过滤器5
sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK; //配置为掩码模式
sFilterConfig.FilterScale = CAN_FILTERSCALE_16BIT; //设为16位宽
//配置第一个过滤对
sFilterConfig.FilterIdLow =StdIdArray1[0]<<5; //设置第一个验证码
mask =0x7ff;
num =sizeof(StdIdArray1)/sizeof(StdIdArray1[0]);
for(i =0; i<num; i++) //计算第一个屏蔽码
{
tmp =StdIdArray1[i] ^ (~StdIdArray1[0]);
mask &=tmp;
}
sFilterConfig.FilterMaskIdLow =(mask<<5)|0x10; //只接收数据帧
//配置第二个过滤对
sFilterConfig.FilterIdHigh = StdIdArray2[0]<<5; //设置第二个验证码
mask =0x7ff;
num =sizeof(StdIdArray2)/sizeof(StdIdArray2[0]);
for(i =0; i<num; i++) //计算第二个屏蔽码
{
tmp =StdIdArray2[i] ^ (~StdIdArray2[0]);
mask &=tmp;
}
sFilterConfig.FilterMaskIdHigh = (mask<<5)|0x10; //只接收数据帧
sFilterConfig.FilterFIFOAssignment = 0; //通过的CAN 消息放入到FIFO0中
sFilterConfig.FilterActivation = ENABLE;
sFilterConfig.BankNumber = 14;
if(HAL_CAN_ConfigFilter(&hcan1, &sFilterConfig) != HAL_OK)
{
Error_Handler();
}
}
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