SNIP_CLASSIC_COM_SECTION_7_Functional_specification_COMBASEDTRANSFORMER

7 Functional specification When a SWC initiates an inter-ECU communication which is configured to be transformed, the SWC hands the data over to the RTE. The RTE executes the configured transformer chain which contains - if the configuration demands this - the COM Based Transformer. Application SWC RTE Com 1. Rte_Write_a {x,y,z} 5. One call to Com_SendSignalGroupArray() 2. Data are serialized based on System Desc. 3. Further Transformers add information crc hash Pdu Transmission Mode Selection y != 0 , z > 200 6. Com analyzes uint8-array based on Transmission Mode Selection (TMS) x y z crc hash x y z 4. one large byte array Figure 7.1: Overview of COM Based Transformer The COM Based Transformer on the sender side serializes the data of the SWC and brings them into a uint8-array representation based on the communication matrix description. The uint8-array representation is forwarded to the COM module to be placed inside the respective IPdu. The COM module may analyze (depending on the configuration of the Transmission Mode Selection – TMS) the provided uint8-array and trigger the respective transmission mode. The IPdu is sent via the communication stack over the bus to the receiver(s). The RTE of the receiver side executes the transformer chain in the reverse order. The COM Based Transformer of the receiver deserializes the linear data back into the original data structure. These are handed over to the receiving SWC. From the SWC’s point of view it is totally transparent whether data are transformed or not. Signal IPdu Signal A Signal B Signal Group X Signal A Signal B CRC D