RE: Connect CAN devices to Thingy91

dejans — Fri, 23 Sep 2022 11:29:51 GMT

Hi,

Thank you for posting the solution.

Best regards,
Dejan

RE: Connect CAN devices to Thingy91

babos — Thu, 22 Sep 2022 11:53:32 GMT

Hello Dejan,

yes off course 'CONFIG_CAN_MCP2515=y' but is for thingy91_nrf52840 board.

I solved it like this:

&pinctrl {
    spi3_default: spi3_default {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 0, 6)>,
                    <NRF_PSEL(SPIM_MISO, 0, 5)>,
                    <NRF_PSEL(SPIM_MOSI, 0, 26)>;
        };
    };

    spi3_sleep: spi3_sleep {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 0, 6)>,
                    <NRF_PSEL(SPIM_MISO, 0, 5)>,
                    <NRF_PSEL(SPIM_MOSI, 0, 26)>;
            low-power-enable;
        };
    };

};
&spi3 {
    status = "okay";
    cs-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>,
               <&gpio1 11 GPIO_ACTIVE_LOW>,
               <&gpio0 30 GPIO_ACTIVE_LOW>,
               <&gpio0 9 GPIO_ACTIVE_LOW>;
    pinctrl-0 = <&spi3_default>;
    pinctrl-1 = <&spi3_sleep>;
    pinctrl-names = "default", "sleep";

    can1_mcp2518: mcp2515@0 {
        compatible = "microchip,mcp2515";
        spi-max-frequency = <1000000>;
        int-gpios = <&gpio0 27 0>;
        status = "okay";
        label = "MCP2518A";
        reg = <0x0>;
        osc-freq = <20000000>;
        bus-speed = <250000>;
        sjw = <1>;
        prop-seg = <2>;
        phase-seg1 = <7>;
        phase-seg2 = <6>;
        #address-cells = <1>;
        #size-cells = <0>;
    };
    can2_mcp2518: mcp2515@1 {
        compatible = "microchip,mcp2515";
        spi-max-frequency = <1000000>;
        int-gpios = <&gpio0 28 0>;
        status = "okay";
        label = "MCP2518B";
        reg = <0x1>;
        osc-freq = <20000000>;
        bus-speed = <250000>;
        sjw = <1>;
        prop-seg = <2>;
        phase-seg1 = <7>;
        phase-seg2 = <6>;
        #address-cells = <1>;
        #size-cells = <0>;
    };
    ioexpander: mcp23sxx@2 {
        compatible = "microchip,mcp23sxx";
        label = "MCP23S08";
        #gpio-cells = <2>;
        ngpios = <8>;
        gpio-controller;
        reg = <0x2>;
        spi-max-frequency = <800000>;
    };
    adc104s021: spi-device@3 {
        compatible = "spi-device";
        reg = <0x3>;
        spi-max-frequency = <800000>;
        label = "ADC104S021";
    };
};
/{
    aliases{
        can-primary = &can1_mcp2518;
        can-secondary = &can2_mcp2518;
        io-expander = &ioexpander;
        adc104s021=&adc104s021;
    };
};
/ {
    chosen {
            zephyr,console = &cdc_acm_uart0;
    };
};

&zephyr_udc0 {
    cdc_acm_uart0: cdc_acm_uart0 {
            compatible = "zephyr,cdc-acm-uart";
            label = "CDC_ACM_0";
    };
};

Best Regards,

Babos

RE: Connect CAN devices to Thingy91

dejans — Thu, 22 Sep 2022 11:48:01 GMT

Hi,

Try adding this configuration option to your prj.conf

CONFIG_CAN_MCP2515=y

In addition, you could try adding a line right below &spi3 in your 52840dk_nrf52840.overlay file

compatible = "nordic,nrf-spim";

Best regards,
Dejan