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how to make CAN BUS waked up with one wake up pattern transmission

Question asked by ByungJu Jin on Apr 22, 2020
Latest reply on Apr 23, 2020 by Tomas Vaverka

Hello Dear


I am using TJA1145 for my project and partial networking.

my problem is that I do not understand exact wake procedure from BUS off status to Bus active.


In my case, I need to send 2 consecutive wake up code to wake up the CAN BUS.


below is wake up sequence.


1. CAN BUS oFF status 

      --> my ECU send Wake up pattern via CAN bus  

2. CAN BUS level goes to 2.5V

       --> My ECU  send same wake up pattern as before.

3. CAN wake up.

4. CAN BUS goes to normal status.



I would like to know how I make CAN BUS waked up with only one time  wake up signal transmission on the CAN.