I am a software developer using Autosar standard. I have a question message routing of two PDUs. My using system use a Can rx/tx interrupt method. I guess called ISR upon receiving can message. And I thought copy rx message to buffer. But I can’t find API providing from autosar standard. I'm curious about the api that is called when routing messages when using the can rx/tx interrupt method. I'm thinking that api based on Autosar criteria will be fixed. Please advise from experts.
Which api is used by Autosar when routting messages using the Can rx/tx interrupt method?
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PDU level routing is done in the
PduR, while Signal-based routing is done inCom.So, on reception, no matter if Polling or Interrupt,
Canwill callCanIf_RxIndicationwith the RxPduId mapped to the PDU.CanIfwill callPduR_RxIndicationthen, which will lookup the PduRRoutingRelations. It will then callCanIf_Transmitwith the DestTxPduId and the data of the received PDU.For Signal-based routing, this is done a level higher in AUTOSAR
Com.This does not have to be programmed manually, it is part of an standard AUTOSAR stack.
The routing relations can also already be defined by the SystemDescription/EcuExtract used by the configuration tool, to configure the stack automatically.