topic Questions re USB device using ROM functions in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/Questions-re-USB-device-using-ROM-functions/m-p/565307#M17058 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by g40 on Thu Jan 21 04:43:48 MST 2016</STRONG><BR /><SPAN>Hi, can anyone help with the following?</SPAN><BR /><BR /><SPAN>I've got a working bulk mode loopback test that more or less works as expected with an NXP Xpresso 4337 board connected to a Windows 7 host. EP0 custom (vendor) requests also work.</SPAN><BR /><BR /><SPAN>1. What's the state re thread-safety for the ROM functions? If I add a systick handler and enable the ticker then USB dies. </SPAN><BR /><BR /><SPAN>2. Does anyone have a working isochronous example? Or even some documentation? Simply changing the relevant descriptors entries does not work</SPAN><BR /><BR /><SPAN>3. Is there any progress on source code and/or debug support for the ROM functions? I really don't understand why this is closed-source ...</SPAN><BR /><BR /><SPAN>TAIA</SPAN><BR /><BR /><SPAN>Jerry.</SPAN><BR /><BR /></BODY></HTML> Wed, 15 Jun 2016 18:51:21 GMT lpcware 2016-06-15T18:51:21Z Questions re USB device using ROM functions https://community.nxp.com/t5/LPC-Microcontrollers/Questions-re-USB-device-using-ROM-functions/m-p/565307#M17058 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by g40 on Thu Jan 21 04:43:48 MST 2016</STRONG><BR /><SPAN>Hi, can anyone help with the following?</SPAN><BR /><BR /><SPAN>I've got a working bulk mode loopback test that more or less works as expected with an NXP Xpresso 4337 board connected to a Windows 7 host. EP0 custom (vendor) requests also work.</SPAN><BR /><BR /><SPAN>1. What's the state re thread-safety for the ROM functions? If I add a systick handler and enable the ticker then USB dies. </SPAN><BR /><BR /><SPAN>2. Does anyone have a working isochronous example? Or even some documentation? Simply changing the relevant descriptors entries does not work</SPAN><BR /><BR /><SPAN>3. Is there any progress on source code and/or debug support for the ROM functions? I really don't understand why this is closed-source ...</SPAN><BR /><BR /><SPAN>TAIA</SPAN><BR /><BR /><SPAN>Jerry.</SPAN><BR /><BR /></BODY></HTML> Wed, 15 Jun 2016 18:51:21 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Questions-re-USB-device-using-ROM-functions/m-p/565307#M17058 lpcware 2016-06-15T18:51:21Z Re: Questions re USB device using ROM functions https://community.nxp.com/t5/LPC-Microcontrollers/Questions-re-USB-device-using-ROM-functions/m-p/565308#M17059 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by g40 on Thu Jan 28 06:48:51 MST 2016</STRONG><BR /><SPAN>Can anyone help with these questions? Thanks.</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:51:21 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Questions-re-USB-device-using-ROM-functions/m-p/565308#M17059 lpcware 2016-06-15T18:51:21Z