请问: wValue和wIndex怎么理解啊!!列程中将wValue=0x0022是不是搞错了啊??? Request.Req.bmRequestType=0x81; Request.Req.bRequest=0x06; Request.Req.wValue=0x0022; Request.Req.wIndex=0x0000; Request.Req.wLength=0x0000|((unsigned int)(report_descr_len+0x40)<<8);
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