ROM VCOM not working with Windows Virtualbox on LPC134x

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by mubes on Wed Jan 20 03:18:01 MST 2016
Hi Folks,

Bit of a strange one, and looking to see if anyone else has seen this.

I am running Virtualbox 5.0.10 on an OSX El Capitain host with Windows7 image.  My LPC1346-based board works perfectly well with OSX (Native), Windows7 (Native), Linux (Native) and Linux (Under Virtualbox) but doesn't work with Windows7 under virtualbox.

The device initialises, I can send my first data (serial) packet and I receive the first callback to my VCOM_bulk_in_hdlr...but after that the wheels seem to come off. No further data seems to reach the other end and I receive no further callbacks to VCOM_bulk_in_hdlr.  Even if I try to 'pace' data sends via USBD_API->hw->WriteEP those data still don't arrive at 'doze.

I don't _need_ this thing to work with VirtualBox, but I don't like leaving problems like this in a system, 'cos they have a habit of coming back and biting you later, so I just wondered if anyone had seen anything similar? 80% sure its not a problem on the MCU side, but I'd like to be 100%, or closer than 80%, at least.