Comment on Cars Are Now Rolling Computers Now. So What Happens When They Stop Getting Updates?

Gsus4@programming.dev ⁨3⁩ ⁨months⁩ ago

• BilboBargains@lemmy.world ⁨3⁩ ⁨months⁩ ago

  Vehicle control systems are overwhelmingly programmed in C, mostly from graphical design tools such as MATLAB Simulink via an automatic process. These are real time control systems which are quite different to an interrupt based operating system such as Linux. The many individual controllers must work in concert according to a strict architecture definition and timing schedule that defines the functionality of the vehicle. It’s not at all like a PC or phone, whose OS become irrelevant over time, with respect to their environment of other systems. The vehicle environment is the same environment that we inhabit i.e. the one with gravity, friction, charge and the other SI units. This is slowly changing with advent of self driving but, yeah.

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  • Gsus4@programming.dev ⁨3⁩ ⁨months⁩ ago

    fine, fine, I learned 3/4 things there, thanks for taking the time

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  • 0x0@programming.dev ⁨3⁩ ⁨months⁩ ago

    These are real time control systems which are quite different to an interrupt based operating system such as Linux.

    You do know you can operate the linux kernel in real time, right?

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    • SapientLasagna@lemmy.ca ⁨3⁩ ⁨months⁩ ago

      It’s not a hard real time OS though. Real Time Linux would be appropriate for some subsystems in a car, but not for things that are safety critical with hard timing constraints, e.g. ABS controllers.

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  • Lumisal@lemmy.world ⁨3⁩ ⁨months⁩ ago

    Yeah but the infotainment system can be Linux based.

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  • nickwitha_k@lemmy.sdf.org ⁨3⁩ ⁨months⁩ ago

    This is correct. If using an OS, an RTOS like the Linux Foundation Zephyr OS is the right choice here.

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• jose1324@lemmy.world ⁨3⁩ ⁨months⁩ ago

  God no

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