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  • Case ID: 329091
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2 SPI masters

mmelv

Hello,

I am needing to use two separate SPI masters, but I'm running out of pins. Are all of the pins compatible with SPI or are there some I should avoid. I'm thinking of taking the pins used by the buttons, is this a good idea and how do I remove the buttons from devicetree?

Thanks in advance! 

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  • 0

    Hi,

     

    You can use any freely available GPIO for the nRF916x:

    https://docs.nordicsemi.com/bundle/ps_nrf9161/page/pin.html

      

    Are you using the 9161-DK?

    If so, the board controller comes into play:

    https://docs.nordicsemi.com/bundle/ug_nrf9161_dk/page/UG/nrf91_DK/hw_description/hw_buttons_leds.html

     

    For the buttons, you are free to use these as you'd like, as they should be routed to the pin header by default, just remember to either delete them in DT, and/or disable any use of them in your firmware.

    Here's a way to delete the buttons section:

    /delete-node/ &{/buttons};

    Add that to the $BOARD.overlay for your specific project

     

    Kind regards,

    Håkon

  • 0 in reply to Håkon Alseth

    Thanks for the response!

    This is what my overlay looks like. When I add the SPI1 it gives me a Zephyr Fatal Error 25. I'm not really sure what to do from here. This overlay works on a different application that I built but I don't do anything with SPI3 and the external flash whereas the asset tracker does. Any ideas on how to proceed? I used addr2line and tracked the failure to  C:/ncs/v2.6.99-cs2/zephyr/drivers/pinctrl/pinctrl_nrf.c:151

    &spi0 { status = "disabled";};
    &i2c1 { status = "disabled";};
    &uart1 { status = "disabled";};
    //&uart0 { status = "disabled";};
    //&spi3 { status = "disabled";};
    &spi2 { status = "disabled";};
    &arduino_adc { status = "disabled";};

        /   {
            /delete-node/ leds;
       
            leds0 {
                compatible = "gpio-leds";
                status = "okay";
                label = "LED0";
                led0: led_0 {
                    status = "okay";
                    gpios = <&gpio0 0 0>;
                    label = "Green LED 1";
                };
            };
       
            leds1 {
                compatible = "gpio-leds";
                status = "okay";
                label = "LED1";
                led1: led_1 {
                    gpios = <&gpio0 1 0>;
                    label = "Green LED 2";
                };
            };
       
            leds2 {
                compatible = "gpio-leds";
                status = "okay";
                label = "LED2";
                led2: led_2 {
                    gpios = <&gpio0 4 0>;
                    label = "Green LED 3";
                };
            };
       
            leds3 {
                compatible = "gpio-leds";
                status = "okay";
                label = "LED3";
                led3: led_3 {
                    gpios = <&gpio0 5 0>;
                    label = "Green LED 4";
                };
            };
       
            /* Configure partition manager to use gd25wb256 as the external flash */
            chosen {
                nordic,pm-ext-flash = &gd25wb256;
            };
       
            aliases {
                ext-flash = &gd25wb256;
            };
        };
       
        &gd25wb256 {
            status = "okay";
        };



    &i2c2 {
        mysensor: mysensor@44{ //4a
            compatible = "i2c-device";
            status = "okay";
            reg = < 0x44 >;
        };
    };

    /{
        custom_buttons {
            compatible = "gpio-keys";
            button4: button_4 {
                gpios = <&gpio0 21 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>; //Pull down is very important
                label = "Custum button 4";
            };
            button5: button_5 {
                gpios = <&gpio0 17 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>; //Pull down is very important
                label = "Custom button 5";
            };
            button6: button_6 {
                gpios = <&gpio0 24 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>; //Pull down is very important
                label = "Custom button 6";
            };
            button7: button_7 {
                gpios = <&gpio0 25 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>; //Pull down is very important
                label = "Custom button 7";
            };
            button8: button_8 {
                gpios = <&gpio0 19 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>; //Pull down is very important
                label = "Custom button 8";
            };
        };

        aliases {
            sw4 = &button4;
            sw5 = &button5;
            sw6 = &button6;
            sw7 = &button7;
            sw8 = &button8;
        };
    };


    &spi1 {
        compatible = "nordic,nrf-spim";
        status = "okay";
        pinctrl-0 = <&spi1_default>;
        pinctrl-1 = <&spi1_sleep>;
        pinctrl-names = "default", "sleep";

        st7789v_st7789v_tl019fqv01: st7789v@0 {
            compatible = "sitronix,st7789v";
            spi-max-frequency = <20000000>;
            reg = <0>;
            //cmd-data-gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;    /* D9 */
            //reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;   /* D8 */ //arduino_header
            width = <320>;
            height = <240>; //170
            x-offset = <0>;
            y-offset = <35>; //35
            vcom = <0x2b>;
            gctrl = <0x35>;
            vrhs = <0x0f>;
            vdvs = <0x20>;
            mdac = <0x60>;
            gamma = <0x01>;
            colmod = <0x55>;
            lcm = <0x2c>;
            porch-param = [0c 0c 00 33 33];
            cmd2en-param = [5a 69 02 01];
            pwctrl1-param = [52 a1];
            pvgam-param = [D0 00 02 07 0B 1A 31 54 40 29 12 12 12 17];
            nvgam-param = [D0 00 02 07 05 15 2D 44 44 1C 18 16 1C 1D];
            ram-param = [00 F8];
            rgb-param = [CD 08 14];
        };
    };

    / {
        gpiocustom {
            compatible = "gpio-keys";
            backlight_pin: backlight-gpio {
                gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
                label = "Custom gpio 28";
            };
            chip_select_pin: chip_select-gpio {
                gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;
                label = "Custom gpio 16";
            };
            data_cmd_pin: data_cmd-gpio {
                gpios = <&gpio0 23 GPIO_ACTIVE_LOW>; //14
                label = "Custom gpio 23";
            };
            reset_pin: reset-gpio {
                gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>; //22
                label = "Custom gpio 22";
            };
        };
    };

    &pinctrl {
        spi1_default: spi1_default {
            group1 {
                    psels = <NRF_PSEL(SPIM_SCK, 0, 9)>,//13 18
                <NRF_PSEL(SPIM_MISO, 0, 18)>,//11 8
                <NRF_PSEL(SPIM_MOSI, 0, 8)>;//12 9
                    nordic,drive-mode = <NRF_DRIVE_H0H1>;
       
            };
        };

        spi1_sleep: spi1_sleep {
            group1 {
                    psels = <NRF_PSEL(SPIM_SCK, 0, 9)>,
                            <NRF_PSEL(SPIM_MOSI, 0, 8)>,
                            <NRF_PSEL(SPIM_MISO, 0, 18)>;
                    low-power-enable;
            };
        };
    };
  • 0 in reply to Håkon Alseth

    Thanks for the response! I tried updating the config but I'm getting the same error.

    Running addr2line for R14/LR gives: C:/ncs/v2.6.99-cs2/zephyr/include/zephyr/drivers/pinctrl.h:354

  • 0 in reply to mmelv

    I think the problem might be that I'm using pins that are default for buttons for my SPI MISO, MOSI, and SCK. I think the asset tracker has button handlers whereas my other implementation that the code works on doesn't. How can I remove the buttons and modify the asset tracker to work without buttons? I'm unable to do /delete-node/ buttons.

  • +1 in reply to mmelv

    Hi,

     

    Sorry, the former config still left uart1 in a "secure" state.

    Try these:

    CONFIG_TFM_SECURE_UART=n
CONFIG_TFM_LOG_LEVEL_SILENCE=y

     

    If it still does not work, could you share the updated .config?

     

    *edit* forgot the last question:

    mmelv said:
    I think the problem might be that I'm using pins that are default for buttons for my SPI MISO, MOSI, and SCK. I think the asset tracker has button handlers whereas my other implementation that the code works on doesn't. How can I remove the buttons and modify the asset tracker to work without buttons? I'm unable to do /delete-node/ buttons.

    You can delete the buttons by setting this in your overlay file:

    /delete-node/ &{/buttons};

     

    You may also have to set CONFIG_DK_LIBRARY=n

     

    Kind regards,

    Håkon

  • 0 in reply to Håkon Alseth

    Yes, that worked! Thanks! Is there any functionality I lose by configuring:

    CONFIG_TFM_SECURE_UART=n
    CONFIG_TFM_LOG_LEVEL_SILENCE=y

  • 0 in reply to mmelv

    Hi,

    Glad that Håkon's suggestion helped, and thank you for sharing the conclusion. Håkon is currently out of office, so I'll mark this case as verified and close it.

    As always please feel free to create new cases for new inqueries and questions

    Kind regards,
    Andreas

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