Other NXP Productsのトピックusb_control_msg return -EPIPE https://community.nxp.com/t5/Other-NXP-Products/usb-control-msg-return-EPIPE/m-p/285391#M2920 <HTML><HEAD></HEAD><BODY><P>hi all,</P><P>&nbsp;&nbsp;&nbsp;&nbsp; does anyone know why the usb_control_msg always return -EPIPE ??</P><P>&nbsp;&nbsp;&nbsp;&nbsp; here is my usage -</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; status = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0), HID_REQ_SET_REPORT,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_VENDOR, </P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ((HID_OUTPUT_REPORT + 1) &lt;&lt; 8), interface-&gt;desc.bInterfaceNumber,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; data-&gt;data, <SPAN style="font-size: 10pt; line-height: 1.5em;">data-&gt;data_len, 250);</SPAN></P><P>&nbsp;&nbsp;&nbsp;&nbsp; the status value always equal -EPIPE.</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp; any information very appreciate !!!!</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp; regards</P></BODY></HTML> Thu, 25 Apr 2013 07:33:56 GMT wangyc 2013-04-25T07:33:56Z usb_control_msg return -EPIPE https://community.nxp.com/t5/Other-NXP-Products/usb-control-msg-return-EPIPE/m-p/285391#M2920 <HTML><HEAD></HEAD><BODY><P>hi all,</P><P>&nbsp;&nbsp;&nbsp;&nbsp; does anyone know why the usb_control_msg always return -EPIPE ??</P><P>&nbsp;&nbsp;&nbsp;&nbsp; here is my usage -</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; status = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0), HID_REQ_SET_REPORT,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_VENDOR, </P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ((HID_OUTPUT_REPORT + 1) &lt;&lt; 8), interface-&gt;desc.bInterfaceNumber,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; data-&gt;data, <SPAN style="font-size: 10pt; line-height: 1.5em;">data-&gt;data_len, 250);</SPAN></P><P>&nbsp;&nbsp;&nbsp;&nbsp; the status value always equal -EPIPE.</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp; any information very appreciate !!!!</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp; regards</P></BODY></HTML> Thu, 25 Apr 2013 07:33:56 GMT https://community.nxp.com/t5/Other-NXP-Products/usb-control-msg-return-EPIPE/m-p/285391#M2920 wangyc 2013-04-25T07:33:56Z