topic USB - no Connect Changed status interrupt in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/USB-no-Connect-Changed-status-interrupt/m-p/551700#M14239 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jhall0819 on Mon Oct 20 08:23:53 MST 2014</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I have an existing product with an LPC2148 and am adding a USB mass storage device. I have started with an IAR-LPC-214X sample project for SPIO Mass Storage. </SPAN><BR /><BR /><SPAN>When I connect to a host I do not see the Connect Change status interrupt. I do see Suspend Change status interrupts. It seems the connect interrupt is necessary to move the USB state on to do packet processing.</SPAN><BR /><SPAN> </SPAN><BR /><SPAN>My board is self powered and does not have the P0.31 soft connect switch on the 1.5 K pull-up. The host does see the device plug-in and sends the Setup sequence. My device sees the Setup packet but is not in a state to processes it. After several In/NAK exchanges my device issues a Stall packet.&nbsp; </SPAN><BR /><BR /><SPAN>Any help, hints will be greatly appreciated.</SPAN><BR /><SPAN>Thanks</SPAN><BR /><BR /></BODY></HTML> Wed, 15 Jun 2016 19:52:59 GMT lpcware 2016-06-15T19:52:59Z USB - no Connect Changed status interrupt https://community.nxp.com/t5/LPC-Microcontrollers/USB-no-Connect-Changed-status-interrupt/m-p/551700#M14239 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jhall0819 on Mon Oct 20 08:23:53 MST 2014</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I have an existing product with an LPC2148 and am adding a USB mass storage device. I have started with an IAR-LPC-214X sample project for SPIO Mass Storage. </SPAN><BR /><BR /><SPAN>When I connect to a host I do not see the Connect Change status interrupt. I do see Suspend Change status interrupts. It seems the connect interrupt is necessary to move the USB state on to do packet processing.</SPAN><BR /><SPAN> </SPAN><BR /><SPAN>My board is self powered and does not have the P0.31 soft connect switch on the 1.5 K pull-up. The host does see the device plug-in and sends the Setup sequence. My device sees the Setup packet but is not in a state to processes it. After several In/NAK exchanges my device issues a Stall packet.&nbsp; </SPAN><BR /><BR /><SPAN>Any help, hints will be greatly appreciated.</SPAN><BR /><SPAN>Thanks</SPAN><BR /><BR /></BODY></HTML> Wed, 15 Jun 2016 19:52:59 GMT https://community.nxp.com/t5/LPC-Microcontrollers/USB-no-Connect-Changed-status-interrupt/m-p/551700#M14239 lpcware 2016-06-15T19:52:59Z