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peng-zhihui avatar peng-zhihui commented on July 17, 2024 1

HID是中断传输，主机定时读取数据的，有没有按键都需要上报，建议了解一下USB HID相关协议和报文格式。

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zh0nglihua avatar zh0nglihua commented on July 17, 2024

没按键按下时，需要清发0， 清除端口缓冲，不然主机会认为端口有数据， 会一直请求数据。

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0xCC0x01 avatar 0xCC0x01 commented on July 17, 2024

没按键按下时，需要清发0， 清除端口缓冲，不然主机会认为端口有数据， 会一直请求数据。

再请教下，是发一次0，清除缓冲就可以，还是在没有按键按下时，持续发0？

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