Example_VirtualSerial running on M0 4350

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by marshall on Thu Sep 13 14:18:56 MST 2012
Board Hitex 4350

I am trying to port the Example_VirtualSerial from M4 Ram to M0 flash, I have the code compiled and running to a point. The sequence of the problem is when USB_Device_ProcessControlRequest is called by the PC for REQ_GetDescriptor, REQ_SetAddress, REQ_GetDescriptor the last call returns and Endpoint_IsSETUPReceived() is still set (or set again) causing the PC to retry the sequence over and over.

So the question is, is there any setup differences for Example_VirtualSerial for running in flash on M0 vs M4 and ram? I commented out bsp_init, and pasted in the scu_pinmux commands that were inside of it (they seemed to make no difference).

Another clue is that the PC which does get a Descriptor complains that the device is in Low Power Mode. (using usbview.exe).