stm32f103 can filter 过滤器配置不成功

sky8023 · 发表于 2017-9-28 16:20:00

我想不是本地地址的数据就不接收。使用CAN扩展帧发送接收数据，13~21位存放地址。但是按照下面配置接收不到数据，如果使用注释掉的方法，就可以接收到数据，再软件判断13~21。
static void canFilterConfig()
{
CAN_FilterInitTypeDef CAN_FilterInitStructure;

/* CAN filter init */
CAN_FilterInitStructure.CAN_FilterNumber = 0;
CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;

CAN_FilterInitStructure.CAN_FilterIdHigh = (canDriver.localAddress >> 3) & 0x001F;
CAN_FilterInitStructure.CAN_FilterIdLow = (canDriver.localAddress << 13) & 0xE000;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x001F;
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0xE000;

// CAN_FilterInitStructure.CAN_FilterIdHigh = 0x00;
// CAN_FilterInitStructure.CAN_FilterIdLow = 0x00;
// CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x00;
// CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x00;

CAN_FilterInitStructure.CAN_FilterFIFOAssignment = CAN_Filter_FIFO0;
CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
CAN_FilterInit(&CAN_FilterInitStructure);
}