I am using MK22 Kinetis series controller in custom board. I am working on usb host.
I am facing two problems:
1. When i connect single pen drive, stack is working properly. But when i connect external hub (passive) and connects pen drive, sometimes it detects the pendrive properly ans sometimes not. What is the reason? it is to do with stack or code?
External hub is "iball Lappie".
2. When i connect hub and pen drive, sometimes attach and detach event comes simultaneously. What is the problem?
Its URGENT. Please help. I cant use SDK 2.0 USB stack as time does not permit.