Hello Everyone ,
We are using MK22DN512VLH5 50 MHz in our custom board , Used USB Device CDC Vcom example from SDK_2.3.1_MK22DN512xxx5.zip to build the application and Boot loader , The issue i am facing is the detection of custom board with Windows PCs.
It is Detected correctly as Virtual Com Port in few PCs using the INF file provided with the SDK , It is detecting in Windows 10-64 bit and 32 bit ,In windows 7-32 bit Pcs we are facing problem , it is detecting properly in few and in other PCs it is showing as USB Device Unkown . In Windows Xp also we are facing the same issue .
Doubting our application and boot loader we have tried flashing the custom board with the direct example provided in the SDK and it is the same . it shows Unknown USB device .
what could be the potential reason for this inconsistency of USB detection on various windows platforms .
Could there be any issue with the hardware ?
Any suggestions regarding this issue will be of great help .
I have attached the Inf file we used with this post , anticipation a solution .
Thanks and Regards .