topic CDC ROM Driver Bug for SetLineCoding in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/CDC-ROM-Driver-Bug-for-SetLineCoding/m-p/576608#M19468 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by Hansi on Fri Dec 05 06:01:50 MST 2014</STRONG><BR /><SPAN>Hi!</SPAN><BR /><BR /><SPAN>I'm experiencing problems with an LPC11U34/421 chip. When I use the ROM USB and DCD drivers, the "line_coding" parameter of the "SetLineCode" function only contains 0xFF (7 bytes with this value). I checked with an USB data sniffer that the transmitted data is ok.</SPAN><BR /><BR /><SPAN>When linking against usbd_11uxx_lib, the values of the "line_coding" parameter are ok too.</SPAN><BR /><BR /><SPAN>Could you please point me to the proper workaround for the ROM drivers to get this working?</SPAN><BR /><BR /><SPAN>Background information: I've instantiated two CDC interfaces (appearing as /dev/ttyACM0 and /dev/ttyACM1) as well as a custom EP0 handler using RegisterClassHandler(). When I comment out the custom EP0 handler, the problem persists.</SPAN><BR /><BR /><SPAN>Thanks</SPAN><BR /><SPAN>&nbsp; Hansi</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 20:16:53 GMT lpcware 2016-06-15T20:16:53Z CDC ROM Driver Bug for SetLineCoding https://community.nxp.com/t5/LPC-Microcontrollers/CDC-ROM-Driver-Bug-for-SetLineCoding/m-p/576608#M19468 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by Hansi on Fri Dec 05 06:01:50 MST 2014</STRONG><BR /><SPAN>Hi!</SPAN><BR /><BR /><SPAN>I'm experiencing problems with an LPC11U34/421 chip. When I use the ROM USB and DCD drivers, the "line_coding" parameter of the "SetLineCode" function only contains 0xFF (7 bytes with this value). I checked with an USB data sniffer that the transmitted data is ok.</SPAN><BR /><BR /><SPAN>When linking against usbd_11uxx_lib, the values of the "line_coding" parameter are ok too.</SPAN><BR /><BR /><SPAN>Could you please point me to the proper workaround for the ROM drivers to get this working?</SPAN><BR /><BR /><SPAN>Background information: I've instantiated two CDC interfaces (appearing as /dev/ttyACM0 and /dev/ttyACM1) as well as a custom EP0 handler using RegisterClassHandler(). When I comment out the custom EP0 handler, the problem persists.</SPAN><BR /><BR /><SPAN>Thanks</SPAN><BR /><SPAN>&nbsp; Hansi</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 20:16:53 GMT https://community.nxp.com/t5/LPC-Microcontrollers/CDC-ROM-Driver-Bug-for-SetLineCoding/m-p/576608#M19468 lpcware 2016-06-15T20:16:53Z