8-bit MicrocontrollersのトピックDetecting Usb Enumeration error https://community.nxp.com/t5/8-bit-Microcontrollers/Detecting-Usb-Enumeration-error/m-p/262699#M20035 <HTML><HEAD></HEAD><BODY><P>Hi guys,</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>I am developed USB device protocol. My stack work fine and the device is correctly enumerated by the host. I assume that the enumeration process is correctly terminated when a set_configuration is send by the host, so I have "an event" in order to detect when the device is correcly enumerated.</P><P>But if the enumeration failed, how I can detect this error? I could use a time-out (if a set_configuration is not receive in 10sec i.e.) but it it is potentially dangerous, I could assume uncorrect decision based on my time out.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Can anyone help me?</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Sorry for the bad English</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>King Regards</P><P>Francesco</P></BODY></HTML> Thu, 11 Apr 2013 13:34:07 GMT elettro86 2013-04-11T13:34:07Z Detecting Usb Enumeration error https://community.nxp.com/t5/8-bit-Microcontrollers/Detecting-Usb-Enumeration-error/m-p/262699#M20035 <HTML><HEAD></HEAD><BODY><P>Hi guys,</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>I am developed USB device protocol. My stack work fine and the device is correctly enumerated by the host. I assume that the enumeration process is correctly terminated when a set_configuration is send by the host, so I have "an event" in order to detect when the device is correcly enumerated.</P><P>But if the enumeration failed, how I can detect this error? I could use a time-out (if a set_configuration is not receive in 10sec i.e.) but it it is potentially dangerous, I could assume uncorrect decision based on my time out.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Can anyone help me?</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Sorry for the bad English</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>King Regards</P><P>Francesco</P></BODY></HTML> Thu, 11 Apr 2013 13:34:07 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Detecting-Usb-Enumeration-error/m-p/262699#M20035 elettro86 2013-04-11T13:34:07Z Re: Detecting Usb Enumeration error https://community.nxp.com/t5/8-bit-Microcontrollers/Detecting-Usb-Enumeration-error/m-p/262700#M20036 <HTML><HEAD></HEAD><BODY><P>Hi Francesco,</P><P><BR />The enumeration time may vary depending the Host (and its Operating System). On the following link you could find some useful information regarding enumeration process on Windows:<BR /><A class="jive-link-external-small" href="http://blogs.msdn.com/b/usbcoreblog/archive/2009/10/31/how-does-usb-stack-enumerate-a-device.aspx">http://blogs.msdn.com/b/usbcoreblog/archive/2009/10/31/how-does-usb-stack-enumerate-a-device.aspx</A></P><P><BR />Additionally, you may find additional information at the following thread:<BR /><A class="jive-link-message-small" data-containerid="2018" data-containertype="14" data-objectid="107572" data-objecttype="2" href="https://community.freescale.com/message/107572#107572">https://community.freescale.com/message/107572</A></P><P></P><P>Hope this will be useful for you.</P><P>Best regards!</P><P>/Carlos</P></BODY></HTML> Wed, 14 Aug 2013 23:40:13 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Detecting-Usb-Enumeration-error/m-p/262700#M20036 CarlosCasillas 2013-08-14T23:40:13Z