DriverConfig

    During version compilation of the device resource source file defined by developers, the compilation tool (for example, the compilation tool of the HCS file is hc-gen) generates bytecodes. When the HDF starts, it transfers the bytecode memory to the DriverConfig module. The DriverConfig module converts the bytecodes into a configuration tree and provides an API for developers to query the tree.

    Since:

    1.0

    Version:

    1.0

    Summary

    Files

    Data Structures

    Data Structure Name

    Description

    Defines the attributes of a tree node in the configuration tree.

    DeviceResourceNode

    Defines a tree node in the configuration tree.

    Provides functions for obtaining information about the device resource configuration tree.

    Macros

    Macro Name and Value

    DEV_RES_NODE_FOR_EACH_ATTR(node, attr)   for ((attr) = (node)->attrData; (attr) != ; (attr) = (attr)->next)

    Traverses the attributes of the current configuration tree node.

    DEV_RES_NODE_FOR_EACH_CHILD_NODE(node, childNode)   for ((childNode) = (node)->child; (childNode) != ; (childNode) = (childNode)->sibling)

    Traverses the child nodes of the current configuration tree node.

    Functions

    Function Name

    Description

    (DeviceResourceType type)

    struct * 

    Obtains the device resource interface handle of the corresponding configuration tree type.

    Details

    Macro Definition Documentation

    DEV_RES_NODE_FOR_EACH_ATTR

    Description:

    Traverses the attributes of the current configuration tree node.

    This operation is a for loop in essence.

    Parameters:

    Name
    node Indicates the configuration tree node to traverse.
    attr Indicates the traversed attributes.

    Description:

    Traverses the child nodes of the current configuration tree node.

    This operation is a for loop in essence.

    Parameters:

    Enumeration Type Documentation

    DeviceResourceType

    Description:

    Enumerates configuration file types.

    Enumerator

    Description
    HDF_CONFIG_SOURCE 

    HDF configuration file

    INVALID 

    Invalid configuration file type

    Function Documentation

    DeviceResourceGetIfaceInstance()

    Description:

    Obtains the device resource interface handle of the corresponding configuration tree type.

    You can use the obtained handle to use the device resource interface.

    Parameters:

    Name

    Description
    type Indicates the type of the device resource interface handle to obtain.

    Returns the device resource interface handle if the operation is successful; returns NULL otherwise.