hi all, I am using TM4c1237h controller, I have interface Keyboard and Pendrive to TIVA.I am using FSUSB11MTX for multiplexing them.Using a GPIO pin .Because of noise the controller of IBM controller gets hang (it is not showing Unknown device, It gets hang in while loop of USBHCDGetDeviceDescriptor() function ), now i want to reset this(IBM keyboard ) controller by disabling Vbus signal.How should i do this? How to remove power on VBus?
I am using tiva's TivaWare_C_Series-2.1.0 library i noticed that in function USBHCDGetDeviceDescriptor() (in USBHCDMain() fun -case USBConnect ) is compaired with 0 for unknown device check. But on error this function is returning 0xffffffff not zero. So unknown device connect this condition will never execute.
Regards, Sagar
So that's a TI library - nothing to do with Keil.
We have once discussed on USB line switch for TM4C1237H6 in this thread. http://www.keil.com/forum/56994/
Refer to my post, Posted 9-Apr-2014 21:21 GMT
Tsuneo