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dgtg

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注册时间： 2017-11-08

已发帖子： 270

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CAN如何配置过滤器？

请问下各位大神，匠芯创的CAN rx过滤器，如何配置啊？
官方例程看不明白，谁帮解释下？谢谢。
如下：

#if CAN_RX_FILTER_ENABLE
        /* config can rx filter */
        struct rt_can_filter_item items[2] =
        {
            //Only receive standard data frame with ID 0x100~0x1FF
            RT_CAN_FILTER_ITEM_INIT(0x100, 0, 0, 0, 0x700, RT_NULL, RT_NULL),
            //Only receive standard data frame with ID 0x345
            RT_CAN_FILTER_ITEM_INIT(0x345, 0, 0, 0, 0x7FF, RT_NULL, RT_NULL),
        };

        struct rt_can_filter_config cfg = {2, 1, items};

        ret = rt_device_control(can_rx_dev, RT_CAN_CMD_SET_FILTER, &cfg);
        if (ret)
        {
            rt_kprintf("Setting can filter failed!\n");
            return ret;
        }
#endif