I imported the usb_cdc_lwip_mpc5748g demo from SDK v0.9.0, and downloded the code to devkit hardware, but the program can not run. When suspended the program, I found the program stoped in usb stack initialize routine, the detials show as below pic. It seems cannot reset usb successfully.
I'm fresh on USB. I don't know what's wrong with it. would you give me some help? Thanks