Resetting BobCAD 21 Interface: Understanding DEVICE_RESET_INTERFACE_STANDARD

In software development, especially in device driver programming, it's not uncommon for devices to malfunction or become unresponsive. In such situations, function drivers need a way to reset and recover these devices. The DEVICE_RESET_INTERFACE_STANDARD structure is an extension of the INTERFACE structure that provides this capability.

This article will delve into the details of the DEVICE_RESET_INTERFACE_STANDARD structure, its components, and how it can be used by function drivers to reset and recover malfunctioning devices in BobCAD 21 interface.

The DEVICE_RESET_INTERFACE_STANDARD structure consists of several key components:

1. SupportedResetTypes: A ULONG parameter that specifies the types of resets supported by the device.

2. QueryBusSpecificResetInfo: A PDEVICE_QUERY_BUS_SPECIFIC_RESET_HANDLER parameter that retrieves information about bus-specific reset operations.

3. DeviceBusSpecificReset: A PDEVICE_BUS_SPECIFIC_RESET_HANDLER parameter that performs a bus-specific reset operation.

4. GetDeviceResetStatus: A PGET_DEVICE_RESET_STATUS parameter that retrieves the status of the device after a reset.

Structure Definition

The DEVICE_RESET_INTERFACE_STANDARD structure is defined as follows:

```c

typedef struct _DEVICE_RESET_INTERFACE_STANDARD {

PVOID InterfaceContext;

INTERFACE_INTERFACE_REFERENCE_InterfaceReference;

INTERFACE_INTERFACE_DEREFERENCE_InterfaceDereference;

PINTERFACE_DEVICE_RESET_DEVICE_RESET;

} DEVICE_RESET_INTERFACE_STANDARD, *PDEVICE_RESET_INTERFACE_STANDARD;

```

Here, `InterfaceContext` is a pointer to interface-specific context information, while `InterfaceReference` and `InterfaceDereference` are routines that increment or decrement the interface's reference count. Finally, `DeviceReset` is the routine that performs the actual device reset.

Using DEVICE_RESET_INTERFACE_STANDARD

To use the DEVICE_RESET_INTERFACE_STANDARD structure, function drivers need to implement the following steps:

1. Define a GUID for the interface.

2. Create an instance of the DEVICE_RESET_INTERFACE_STANDARD structure and fill in its components (e.g., SupportedResetTypes, QueryBusSpecificResetInfo, etc.).

3. Register the interface with the operating system.

4. Call the DeviceReset routine to perform the reset operation.

In conclusion, the DEVICE_RESET_INTERFACE_STANDARD structure provides a way for function drivers to reset and recover malfunctioning devices in BobCAD 21 interface. By understanding its components and usage, developers can create robust device drivers that can handle device failures and ensure reliable communication with hardware devices.

Reset bobcad 21 interface