set up a CAPL gateway between two CAN bus systems

汽车电子实验室

于 2023-02-17 22:45:42 发布

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分类专栏：车载电子电气架构文章标签： gateway 数据库

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本文介绍了如何使用AUTOSAR 4.2.1及以上版本的数据库在两个CAN总线系统间设置CAPL网关。通过TriggerPDU2()函数实现PDU路由，从CAN_Powertrain到CAN_Second的网关节点进行数据传输。CAPL代码示例中，除EngineData和Ignition_Info外，所有接收到的CAN_Powertrain网络的PDUs都将被路由到CAN_Second。

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Question:
How can I set up a CAPL gateway between two CAN bus systems using AUTOSAR databases ≥ 4.2.1?
Answer:
The gateway can be realized by routing the PDUs and works similarly to a frame-based approach. Key to the gateway is the CAPL function TriggerPDU2(), which uses the following syntax:
long triggerPDU2(pdu PDUObject, dword DestBusContext, char[] DBName, char[] TXNode, char[] PDUName, dword ShortHeaderID, dword LongHeaderID, dword Flags, dword PayloadLen)
Parameters:
• PDUObject: PDU object to be transmitted.
• DestBusContext: bus context of destination bus in simulation setup
• DBName: Name of the cluster in the database
• TXNode: Name of the transmitter node, can be used with empty string also
• PDUName: Name of the PDU to be transmitted