2.2.4.3 USB_DEVICE_Status Function

C

SYS_STATUS USB_DEVICE_Status(
    SYS_MODULE_OBJ object
);

Summary

This function provides the current status of the USB device layer.

Precondition

The USB_DEVICE_Initialize function must have been called before calling this function.

Parameters

Returns

SYS_STATUS_READY - Indicates that the device is busy with a previous system level operation and cannot start another.

SYS_STATUS_UNINITIALIZED - Indicates that the device layer is in a deinitialized state.

Example

// This code example shows how the USB_DEVICE_Status function
// can be used to check if the USB Device Layer is ready
// for client operations. 

SYS_MODULE_OBJ      object;     // Returned from DRV_USB_Initialize
SYS_STATUS          status;

status = USB_DEVICE_Status(object);

if (SYS_STATUS_READY != status)
{
    // Handle error
}

Remarks

None.