AutoSAR series shows (practice papers) 12.2-CanTP

CanTP

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CanTP said it is not important really important, which itself is designed to be used for many CAN transport protocol, but essentially, we will make the diagnosis when used with, but is simple, we speak speak

First, the main role

CanTp is a module located between PduR and CanIf, mainly to provide the following services:

1. Dividing the data on the transmission direction
2. Receiving data on the direction of recombinant
3. Data flow control
4. Detecting an error in the divided session

It means agreement diagnosed sometimes more than 8 bytes of the service, this time on the need to use multiple CAN message to send the contents of this service, we need to do CanTP division. Also in the time of reception, also needs to be done restructuring

Second, the diagnosis process transfer

If the ECU now we have to send diagnostic information to diagnose PC, then our experience of what diagnostic messages, take a look at our map