DBC_File_Format_Documentation(10)

Vector 公司的 DBC 文件格式说明。这类DBC文件可以作为整车CAN网络的描述文件,可以描述各个CAN message(包括ID、传递参数的物理含义等)。

12 User Defined Attribute Definitions

User defined attributes are a means to extend the object properties of the DBC file. These additional attributes have to be defined using an attribute definition with an attribute default value. For each object having a value defined for the attribute an attribute value entry has to be defined. If no attribute value entry is defined for an object the value of the object's attribute is the attribute's default.

12.1 Attribute Definitions

attribute_definitions = { attribute_definition } ;

attribute_definition = 'BA_DEF_' object_type attribute_name attrib-

ute_value_type ';' ;

object_type = '' | 'BU_' | 'BO_' | 'SG_' | 'EV_' ;

attribute_name = '"' C_identifier '"' ;

attribute_value_type = 'INT' signed_integer signed_integer |

'HEX' signed_integer signed_integer |

'FLOAT' double double |

'STRING' |

'ENUM' [char_string {',' char_string}]

attribute_defaults = { attribute_default } ;

attribute_default = 'BA_DEF_DEF_' attribute_name attribute_value

';' ;

attribute_value = unsigned_integer | signed_integer | double |

char_string ;

12.2 Attribute Values

attribute_values = { attribute_value_for_object } ;

attribute_value_for_object = 'BA_' attribute_name (attribute_value |

'BU_' node_name attribute_value |

'BO_' message_id attribute_value |

'SG_' message_id signal_name attribute_value |

'EV_' env_var_name attribute_value)

';' ;

13 Examples

VERSION ""

NS_ :

NS_DESC_

CM_

BA_DEF_

BA_

VAL_

CAT_DEF_

CAT_

FILTER

BA_DEF_DEF_