Device tree error undefined reference to `__device_dts_ord_127'

RE: Device tree error undefined reference to `__device_dts_ord_127'

Einarh — Fri, 27 Jan 2023 13:41:24 GMT

Oh I see.

While it certainly isn't good code practice to use a binding for a different sensor, I don't really see why it shouldn't compile.

It could be worth looking into how the NCS BH1749 sample is set up.

One thing I suspect is that nrf/dts/bindings might not be included in your project by default, I notice that the NCS sample has target_sources(app PRIVATE ${app_sources}) included in their CMakeLists.txt, that might be worth trying if you're not already doing it.

Also, this is what that sample's compiled dts node looks like:

i2c2: i2c@a000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xa000 0x1000 >;
				clock-frequency = < 0x61a80 >;
				interrupts = < 0xa 0x1 >;
				status = "okay";
				pinctrl-0 = < &i2c2_default >;
				pinctrl-1 = < &i2c2_sleep >;
				pinctrl-names = "default", "sleep";
				bme680: bme680@76 {
					compatible = "bosch,bme680";
					reg = < 0x76 >;
				};
				bh1749: bh1749@38 {
					compatible = "rohm,bh1749";
					reg = < 0x38 >;
					int-gpios = < &gpio0 0x1b 0x11 >;
				};
			};

First thing I notice is they use nrf-twim rather than nrf-twi, maybe worth a shot.

-Einar

RE: Device tree error undefined reference to `__device_dts_ord_127'

drumpros — Thu, 26 Jan 2023 13:34:25 GMT

for me, rohm,bh1749.yaml is included in the v2.2.0 SDK: \v2.2.0\nrf\dts\bindings\sensor\rohm,bh1749.yaml

RE: Device tree error undefined reference to `__device_dts_ord_127'

Einarh — Thu, 26 Jan 2023 13:30:35 GMT

What do you mean it has a 'int-gpios' property?

Where is it defined?

RE: Device tree error undefined reference to `__device_dts_ord_127'

drumpros — Thu, 26 Jan 2023 13:26:51 GMT

I have just used that for now as a template binding as it a 'int-gpios' property which as far as im aware is required to call GPIO_DT_SPEC_GET_OR. there is a LSM magnetometer binding, but it is for a slightly different model and has a property for 'interrupts' instead which seems to be an invalid syntax when calling GPIO_DT_SPEC_GET_OR.

Are there any other bindings you would suggest for arbitrary twi properties?

RE: Device tree error undefined reference to `__device_dts_ord_127'

Einarh — Thu, 26 Jan 2023 12:50:48 GMT

Hello

I cannot see "rohm,bh1749" on the list of available devicetree bindings.

Have you defined it yourself?

Best regards,

Einar