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
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