Adding another I2C node causes undefined reference to `__device_dts_ord_XXX'

[J0sh1101]

Hello!

I am trying to merge two simple Zephyr applications that both use I2C. I have an application that uses the SBC_OLED01 display. I followed these instructions. The second application uses the LISH3DH accelerometer with the nordic example LIS2DH. Both are using the i2c0 node. When I compile them separately it works fine, but after I merge them I get the error undefined reference to `__device_dts_ord_XXX'. I have searched the devzone but have not found anything that could help me. I assume the error lies in the overlay file. Here is the overlay file:

arduino_i2c: &i2c0 {
	compatible = "nordic,nrf-twim";
	status = "okay";
	clock-frequency = <I2C_BITRATE_FAST>;
    zephyr,concat-buf-size = <4096>;
};


&i2c1 {
    status = "okay"; 
    /*  --> if uncomment this then I get the error
    lis2dh12: lis2dh12@18 {
		compatible = "st,lis2dh12", "st,lis2dh";
		reg = <0x18>;
		irq-gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>, <&gpio0 30 GPIO_ACTIVE_HIGH>;
		disconnect-sdo-sa0-pull-up;
	};
     */
};

I have looked in the zephyr.dts file and I it looks okay:

 ....
 
 		i2c0: arduino_i2c: i2c@40003000 {
			compatible = "nordic,nrf-twim";
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			reg = < 0x40003000 0x1000 >;
			clock-frequency = < 0x61a80 >;
			interrupts = < 0x3 0x1 >;
			status = "okay";
			pinctrl-0 = < &i2c0_default >;
			pinctrl-1 = < &i2c0_sleep >;
			pinctrl-names = "default", "sleep";
			zephyr,concat-buf-size = < 0x1000 >;
			ssd1306_ssd1306_128x32: ssd1306@3c {
				compatible = "solomon,ssd1306fb";
				reg = < 0x3c >;
				width = < 0x80 >;
				height = < 0x20 >;
				segment-offset = < 0x0 >;
				page-offset = < 0x0 >;
				display-offset = < 0x0 >;
				multiplex-ratio = < 0x1f >;
				segment-remap;
				com-invdir;
				com-sequential;
				prechargep = < 0x22 >;
			};
		};
		spi0: spi@40003000 {
			compatible = "nordic,nrf-spi";
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			reg = < 0x40003000 0x1000 >;
			interrupts = < 0x3 0x1 >;
			max-frequency = < 0x7a1200 >;
			easydma-maxcnt-bits = < 0x10 >;
			status = "disabled";
			pinctrl-0 = < &spi0_default >;
			pinctrl-1 = < &spi0_sleep >;
			pinctrl-names = "default", "sleep";
		};
		i2c1: i2c@40004000 {
			compatible = "nordic,nrf-twi";
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			reg = < 0x40004000 0x1000 >;
			clock-frequency = < 0x186a0 >;
			interrupts = < 0x4 0x1 >;
			status = "okay";
			pinctrl-0 = < &i2c1_default >;
			pinctrl-1 = < &i2c1_sleep >;
			pinctrl-names = "default", "sleep";
			lis2dh12: lis2dh12@18 {
				compatible = "st,lis2dh12", "st,lis2dh";
				reg = < 0x18 >;
				irq-gpios = < &gpio0 0x1c 0x0 >, < &gpio0 0x1e 0x0 >;
				disconnect-sdo-sa0-pull-up;
			};
		};
 
 ...

I thought I need to add the CONFIG_I2C_1 flag in the .conf file, but it does not recognize the symbol. What could be issue of this error?

Thanks for the help!!!

OS: Windows

SDK: 2.4.1

IDE: Visual Studio Code

Hardware: nRF52840 DK

[Naeem Maroof]

Hello,

And thank you for your patience.

Now I have gone through your project and the link which you have posted.

So basically, the screen (device) from solomon supports both the i2c and the spi interface.

But previously we were configuring it wrong in the overlay.

Now you have removed that part from the overlay, and I see that you were using "SHIELD=ssd..." parameter in building, and thats solomon device gets correctly configured in the DTS.

When I modify the overlay based on the ssd-shield overlay, and I add config for this device (and its dependency) [CONFIG_SSD1306 and CONFIG_DISPLAY], then it is working good.

So I think previously our overlay was not good, and also we need to enable driver for this device in the config.

Below is the output snapshot like the previous one:

And the project is attached just for reference:

tocustomer.rar

And whatever you have said about the prj.conf is probably not true. Kconfig is to define config options, ranges, dependencies, selections and default values, while the prj.conf is to use specific values for those configs for the application.

You can read more on the zephyr about how build system works, and also the information in this ticket might be helpful for that.

BR, Naeem