The function returns the enable status of the bus. It can be called after the USB_HOST_BusEnable() function is called, to check if the bus has been enabled yet. If the bus parameter is set to USB_HOST_BUS_ALL, then the function will check the enable status of all the busses and will return true only if all the busses are enabled.

USB_HOST_RESULT USB_HOST_BusIsEnabled(
    USB_HOST_BUS bus
);

The USB_HOST_Initialize() function should have been called before calling this function.

USB_HOST_RESULT_TRUE if the bus is enabled. USB_HOST_RESULT_FALSE if the bus is not enabled.. USB_HOST_RESULT_BUS_UNKNOWN if the specified bus is invalid (it does not exist in the system). USB_HOST_RESULT_FAILURE if an unknown failure occurred.

None.