Posts: 1
Registered: ‎08-23-2016

VCPXpress and SUSPEND mode



I am using VCPXpress library on EFM8UB1 processor and it works fine as long as virtual serial port on PC is opened. But whenever the COM port is closed the VCPXpress library enters loop in library function USB_IsSuspended() and never returns from VCPXpress ISR to main loop. So whole application is stalled.


I need the processor to work in main loop in the same way whether USB is connector or not. Or whether the COM port is opened or not. I didn't find a way how to configure VCPXpress library not to go to suspend so far. Can you help me?

Posts: 561
Registered: ‎09-18-2015

Re: VCPXpress and SUSPEND mode

Hi Jan,


This was escalated to our support system. Please check the comments and reply.