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Read data from canbus.

Discussion in 'Gen 4 Prius Technical Discussion' started by Alleg, Jul 28, 2021.

  1. Alleg

    Alleg New Member

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    Hi everyone, I decided to ask on this forum because I can't find any good info on the internet.
    I am building a simple display to look at mg1 mg2 torque/power and some other interesting Infos.
    I am using a simple teensy board with a canbus transceiver.
    With a simple program I can see all the traffic on the canbus, I've tried on a Lexus ct200h and saw everything like a Prius 3, but on the Prius 4 I can see only a few messages, tried on a rav4 2019 same, ux 250h same.
    Seems like a firewall for the broadcasted info is kept internal.
    Someone has some suggestions, I'll post a photo of the output asap.
    Thanks for your attention.
     
    #1 Alleg, Jul 28, 2021
  2. Alleg

    Alleg New Member

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    This is what i read from normal canbus, in the second image is what I'm sending without a response.
    canread.JPG
    code.JPG
     
    #2 Alleg, Jul 29, 2021
  3. ihatenoise

    ihatenoise Junior Member

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    Are you seeing other CAN messages? You should be at least seeing all the messages described in this dbc opendbc/toyota_prius_2017_pt_generated.dbc at master · commaai/opendbc · GitHub

    If not, maybe you are not looking at the right CAN bus?

    I never messed around with my car so I'm just guessing... And maybe the message definitions have changed too for TNGA Hybrid cars vs. non-TNGA (Gen 3) for the hybrid system. Seems like no one has really figured out how to get MG1/MG2 information Gen IV Prius Custom PIDs for Torque app | PriusChat
     
    #3 ihatenoise, Aug 11, 2021
    PtPri likes this.
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