Facing the issue with the nrf52840-nrf52840dk.overlay file

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Kazi Afroza Sultana — Wed, 14 May 2025 16:48:07 GMT

Hello,

The error is related to device tree. It seems The Kconfig system disables the ST7789V driver because it cannot find a devicetree node with compatible = "sitronix,st7789v" and status = "okay".

It does not look like you followed the device tree I attached here before.

MIPI DBI Wrapper Requirement

As of Zephyr 3.7 and later (used in nRF Connect SDK v2.9.x), ST7789V-based displays must be declared within a MIPI DBI driver wrapper device. This means you should not declare the display directly under the SPI bus. Instead, you need a mipi_dbi node that wraps the display node. This is a breaking change from previous Zephyr versions. source: https://docs.nordicsemi.com/bundle/ncs-latest/page/zephyr/releases/migration-guide-3.7.html#display

Could you follow the one I mentioned here before?

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Devcodes — Wed, 30 Apr 2025 06:58:41 GMT

devzone.nordicsemi.com/.../6835.buildlogs.txt

buildlogs for your reference

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Devcodes — Wed, 30 Apr 2025 06:15:13 GMT

my proj.conf, .overlay,cmakelist.txt is as follows:

# Logging

CONFIG_LOG=y

CONFIG_LOG_DEFAULT_LEVEL=4

# Display framework

CONFIG_DISPLAY=y

CONFIG_DISPLAY_LOG_LEVEL_DBG=y

# ST7789V driver via MIPI-DBI SPI interface

CONFIG_MIPI_DBI=y

CONFIG_ST7789V=y

CONFIG_ST7789V_RGB565=y

# SPI & GPIO drivers

CONFIG_SPI=y

CONFIG_SPI_NRFX=y

CONFIG_GPIO=y

nrf52840dk_nrf52840.0verlay:

/ {

chosen {

zephyr,display = &st7789v;

};

&spi2 {

status = "okay";

sck-pin = <15>;

mosi-pin = <13>;

cs-gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;

st7789v: st7789v@0 {

compatible = "sitronix,st7789v";

reg = <0>;

spi-max-frequency = <8000000>;

dc-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;

reset-gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;

status = "okay";

width = <240>;

height = <240>;

pixel-format = "rgb565";

x-offset = <0>;

y-offset = <80>;

mipi-mode = <2>; // 4-wire SPI

gctrl = <0x35>;

vcom = <0x19>;

vrhs = <0x12>;

vdvs = <0x20>;

mdac = <0x00>;

lcm = <0x2c>;

colmod = <0x05>;

gamma = <0x01>;

porch-param = [0C 0C 00 33 33];

cmd2en-param = [5A 69 02 01];

pwctrl1-param = [A4 A1];

pvgam-param = [D0 04 0D 11 13 2B 3F 54 4C 18 0D 0B 1F 23];

nvgam-param = [D0 04 0C 11 13 2C 3F 44 51 2F 1F 1F 20 23];

ram-param = [00 F0];

rgb-param = [CD 08 14];

};

cmakelist.txt:

cmake_minimum_required(VERSION 3.20.0)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

project(st7789v_display_example)

target_sources(app PRIVATE src/main.c)

am facing the build issue as shown in the image. can u help me to resolve it as soon as possible

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Kazi Afroza Sultana — Tue, 29 Apr 2025 14:54:07 GMT

Hello,

Did you able to run the program?

Can you please send me the warning in a word file?

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Devcodes — Wed, 16 Apr 2025 11:33:10 GMT

yes . I fixed the overlay issues . but am now facing the warning with the proj. conf . how to resolve it .

my proj.conf is as follows:

# Logging

CONFIG_LOG=y

CONFIG_LOG_DEFAULT_LEVEL=4

# Display framework

CONFIG_DISPLAY=y

CONFIG_DISPLAY_LOG_LEVEL_DBG=y

# ST7789V driver via MIPI-DBI SPI interface

CONFIG_MIPI_DBI=y

CONFIG_MIPI_DBI_SPI=y

#CONFIG_SITRONIX_ST7789V=y

#CONFIG_SITRONIX_ST7789V_RGB565=y

CONFIG_DISPLAY_ST7789V=y

CONFIG_DISPLAY_ST7789V_RGB565=y

# SPI & GPIO drivers

CONFIG_SPI=y

CONFIG_SPI_NRFX=y

CONFIG_GPIO=y

Cmakelists.txt:

# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.20.0)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

project(st7789v_display_example)

target_sources(app PRIVATE src/main.c)

# Add the ST7789V driver source file

#zephyr_library()

zephyr_library_include_directories(drivers/display)

zephyr_library_sources(${ZEPHYR_BASE}/drivers/display/display_st7789v.c) . please let me know if anything am miising out?

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Kazi Afroza Sultana — Mon, 14 Apr 2025 16:10:11 GMT

Hello,

'' spi-dev = <&st7789v>;'' the spi-dev property in the mipi_dbi node should point to the SPI bus (&spi2), not to the display controller.

And the nesting of your nodes isn't quite right - the ST7789V should be a child of the MIPI DBI node, but they should be properly separated.

So, try this

/ {
    chosen {
        zephyr,display = &st7789v;
    };
};

&spi2 {
    status = "okay";
    sck-pin = <15>;
    mosi-pin = <13>;
    cs-gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
};

mipi_dbi {
    compatible = "zephyr,mipi-dbi-spi";
    reset-gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
    dc-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
    spi-dev = <&spi2>;
    #address-cells = <1>;
    #size-cells = <0>;

    st7789v: st7789v@0 {
        compatible = "sitronix,st7789v";
        reg = <0>;
        mipi-max-frequency = <8000000>;
        width = <240>;
        height = <240>;
        pixel-format = "rgb565";
        x-offset = <0>;
        y-offset = <0>;
        
        buswidth = <8>;
        mipi-mode = <2>; // SPI 4-wire
        
        gctrl = <0x35>;
        vcom = <0x19>;
        vrhs = <0x12>;
        vdvs = <0x20>;
        mdac = <0x00>;
        lcm = <0x2c>;
        colmod = <0x05>;
        gamma = <0x01>;
        
        porch-param = [0C 0C 00 33 33];
        cmd2en-param = [5A 69 02 01];
        pwctrl1-param = [A4 A1];
        pvgam-param = [D0 04 0D 11 13 2B 3F 54 4C 18 0D 0B 1F 23];
        nvgam-param = [D0 04 0C 11 13 2C 3F 44 51 2F 1F 1F 20 23];
        ram-param = [00 F0];
        rgb-param = [CD 08 14];
        backlight-gpios = <&gpio0 19 GPIO_ACTIVE_HIGH>;
    };
};

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Devcodes — Wed, 09 Apr 2025 07:39:02 GMT

yes . Include it still no change . can you verify my overlay file .? also any sample eaxmple will you be able to provide to get started with ? am using nRf sdk desktop 5.0.3 ncsv 2.9.1 . with nrf 52840 sdk.

/ {

chosen {

zephyr,display = &st7789v;

};

&spi2 {

status = "okay";

sck-pin = <15>;

mosi-pin = <13>;

cs-gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;

mipi_dbi: mipi_dbi@0 {

compatible = "zephyr,mipi-dbi-spi";

reg = <0>; // SPI chip select 0

reset-gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;

dc-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;

spi-max-frequency = <8000000>;

spi-dev = <&st7789v>;

#address-cells = <1>;

#size-cells = <0>;

st7789v: st7789v@0 {

compatible = "sitronix,st7789v";

reg = <0>; // Just needs to be unique from mipi_dbi

spi-max-frequency = <8000000>;

width = <240>;

height = <240>;

pixel-format = "rgb565";

x-offset = <0>;

y-offset = <0>;

buswidth = <8>;

mipi-mode = <2>; // SPI 4-wire

gctrl = <0x35>;

vcom = <0x19>;

vrhs = <0x12>;

vdvs = <0x20>;

mdac = <0x00>;

lcm = <0x2c>;

colmod = <0x05>;

gamma = <0x01>;

porch-param = [0C 0C 00 33 33];

cmd2en-param = [5A 69 02 01];

pwctrl1-param = [A4 A1];

pvgam-param = [D0 04 0D 11 13 2B 3F 54 4C 18 0D 0B 1F 23];

nvgam-param = [D0 04 0C 11 13 2C 3F 44 51 2F 1F 1F 20 23];

ram-param = [00 F0];

rgb-param = [CD 08 14];

backlight-gpios = <&gpio0 19 GPIO_ACTIVE_HIGH>;

};

also let me know any changes required to this overlay let me know.

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Kazi Afroza Sultana — Sun, 06 Apr 2025 06:10:01 GMT

Hello,

Did you include this ''#include <zephyr/dt-bindings/mipi_dbi/mipi_dbi.h>'' on top of the configuration?

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Devcodes — Thu, 03 Apr 2025 09:40:41 GMT

Hi, I changed my .overlay file as below:

/ {

chosen {

zephyr,display = &st7789v;

};

/* Configure SPI2 for ST7789V */

&spi2 {

status = "okay";

sck-pin = <15>; /* SCK -> P0.15 */

mosi-pin = <13>; /* MOSI -> P0.13 */

cs-gpios = <&gpio0 17 GPIO_ACTIVE_LOW>; /* CS -> P0.17 */

/* MIPI-DBI wrapper for ST7789V */

mipi_dbi: mipi_dbi@0 {

compatible = "zephyr,mipi-dbi-spi";

reg = <0>; /* SPI Chip Select 0 */

reset-gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;

dc-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;

spi-dev = <&spi2>;

/* ✅ Ensure SPI settings are inherited */

// spi-max-frequency = ; /* 🔹 Added here too */

#address-cells = <1>;

#size-cells = <0>;

/* ST7789V Device Node */

st7789v: st7789v@0 {

compatible = "sitronix,st7789v";

reg = <0>;

/* ✅ SPI Configuration */

spi-max-frequency = <8000000>; /* 🔹 Corrected placement */

/* Display properties */

width = <240>;

height = <240>;

pixel-format = "rgb565";

x-offset = <0>;

y-offset = <0>;

/* MIPI-DBI properties */

buswidth = <8>;

mipi-mode = <2>; /* SPI 4-wire mode */

/* ST7789V Init Parameters */

gctrl = <0x35>;

vcom = <0x19>;

vrhs = <0x12>;

vdvs = <0x20>;

mdac = <0x00>;

lcm = <0x2c>;

colmod = <0x05>;

gamma = <0x01>;

/* Additional parameters */

porch-param = [0C 0C 00 33 33];

cmd2en-param = [5A 69 02 01];

pwctrl1-param = [A4 A1];

pvgam-param = [D0 04 0D 11 13 2B 3F 54 4C 18 0D 0B 1F 23];

nvgam-param = [D0 04 0C 11 13 2C 3F 44 51 2F 1F 1F 20 23];

ram-param = [00 F0];

rgb-param = [CD 08 14];

backlight-gpios = <&gpio0 19 GPIO_ACTIVE_HIGH>;

};

}; still am facing the error as devicetree error: how to resolve it?

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Kazi Afroza Sultana — Wed, 02 Apr 2025 12:37:33 GMT

Hello,

The error I can see from screenshot seems related to device tree configuration for the display as child node of SPI.

According to the migration guide Migration guide to Zephyr v3.7.0, ''ST7789V based displays now use the MIPI DBI driver class. These displays must now be declared within a MIPI DBI driver wrapper device, which will manage interfacing with the display. (GitHub #73750) Note that the cmd-data-gpios pin has changed polarity with this update, to align better with the new dc-gpios name.''

So, you need to set the display ST7789V within mipi dbi driver. Accordign the migration guide you can change the overlay file follwoing way

/* Include the MIPI DBI definitions */
#include <zephyr/dt-bindings/mipi_dbi/mipi_dbi.h>

/ {
    chosen {
        zephyr,display = &st7789v;
    };
};

/* Configure SPI2 for the display */
&spi2 {
    compatible = "nordic,nrf-spi";
    status = "okay";
    sck-pin = <13>;
    mosi-pin = <15>;
    cs-gpios = <&gpio0 28 GPIO_ACTIVE_LOW>;
};

mipi_dbi {
    compatible = "zephyr,mipi-dbi-spi";
    reset-gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
    dc-gpios = <&gpio0 19 GPIO_ACTIVE_HIGH>;
    spi-dev = <&spi2>;
    #address-cells = <1>;
    #size-cells = <0>;

    st7789v: st7789v@0 {
        compatible = "sitronix,st7789v";
        reg = <0>;
        mipi-max-frequency = <8000000>;
        mipi-mode = <MIPI_DBI_MODE_SPI_4WIRE>;
        backlight-gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
        width = <240>;
        height = <240>;
        pixel-format = "rgb565";
        x-offset = <0>;
        y-offset = <0>;
        gctrl = <0x35>;
        vcom = <0x19>;
        vrhs = <0x12>;
        vdvs = <0x20>;
        mdac = <0x00>;
        lcm = <0x2c>;
        colmod = <0x05>;
        gamma = <0x01>;
        porch-param = [0C 0C 00 33 33];
        cmd2en-param = [5A 69 02 01];
        pwctrl1-param = [A4 A1];
        pvgam-param = [D0 04 0D 11 13 2B 3F 54 4C 18 0D 0B 1F 23];
        nvgam-param = [D0 04 0C 11 13 2C 3F 44 51 2F 1F 1F 20 23];
        ram-param = [00 F0];
        rgb-param = [CD 08 14];
    };
};

RE: Facing the issue with the nrf52840-nrf52840dk.overlay file

Devcodes — Wed, 02 Apr 2025 07:38:34 GMT