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CoolPi 4B硬件如何扩展 CAN接口

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  • T
    Tourists 0 last edited by Apr 25, 2023, 2:07 AM

    CoolPi 4B硬件如何扩展 CAN接口

    G J 2 Replies Last reply Apr 25, 2023, 3:04 AM Reply Quote 0
    • G
      george @Tourists 0 last edited by Apr 25, 2023, 2:22 AM

      @Tourists-0 下面这个帖子有介绍GPIO的功能复用,40PIN 可以扩展两路CAN出来。
      https://www.cool-pi.com/topic/68/coolpi-4b硬件扩展一-40pin接口介绍?_=1682384241578

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      • J
        jack_admin @Tourists 0 last edited by Apr 25, 2023, 3:04 AM

        @Tourists-0

        参考修改内核设备树文件,举例使能can1

        vim arch/arm64/boot/dts/rockchip/rk3588s-cp4.dts
        
        &can1 {
                pinctrl-names = "default";
                pinctrl-0 = <&can1m1_pins>;
                status = "okay";
        };
        
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