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uart1 如何实现接收不定长的数据？
看我帖子 UART那个 我调试通了。 串口不定长 如果是私有协议，要有长度说明字节的哦。
弄好了，串口加定时器配合。
@zzw 我感觉定时器 1 做字节超时 有点问题。
@赢娶姗姗 请问UART支持空闲中断+DMA吗
@larkin 不支持
