How to use sensor with multiple ds18b20 connected to ds2482-800?

[dolence]

I have a custom board with two ds2482-800 connected to the same i2c bus with different addresses. I'm trying to read the temperature from multiple sensors connected to a total of 16 channels on these devices. Actually, I have one ds2482-800 working with the scanner sample.

1. How to add the second ds2482-800 to the same i2c bus and how to access each channel?
2. How to report the temperature of each sensor on this scenario? Is it in anyway similar to the ds18b20 sample on serial?
3. Do I need an ds18b20 entry on my i2c node too?

Any help would be greatly appreciated.

[dolence]

I got it working, but I'm not sure I did this the right way. This is the expected? The channels should be specified like this or is there a better way to do this?

&i2c2 {
	w1@18 {
		compatible = "maxim,ds2482-800";
		reg = <0x18>;

		#address-cells = <1>;
		#size-cells = <0>;

		w1_a_ch0: ch@0 {
			compatible = "maxim,ds2482-800-channel";
			reg = <0>;
		};		
		w1_a_ch1: ch@1 {
			compatible = "maxim,ds2482-800-channel";
			reg = <1>;
		};
		w1_a_ch2: ch@2 {
			compatible = "maxim,ds2482-800-channel";
			reg = <2>;
		};		
		w1_a_ch3: ch@3 {
			compatible = "maxim,ds2482-800-channel";
			reg = <3>;
		};
		w1_a_ch4: ch@4 {
			compatible = "maxim,ds2482-800-channel";
			reg = <4>;
		};		
		w1_a_ch5: ch@5 {
			compatible = "maxim,ds2482-800-channel";
			reg = <5>;
		};
		w1_a_ch6: ch@6 {
			compatible = "maxim,ds2482-800-channel";
			reg = <6>;
		};		
		w1_a_ch7: ch@7 {
			compatible = "maxim,ds2482-800-channel";
			reg = <7>;
		};				
	};
	w1@19 {
		compatible = "maxim,ds2482-800";
		reg = <0x19>;

		#address-cells = <1>;
		#size-cells = <0>;

		w1_b_ch0: ch@0 {
			compatible = "maxim,ds2482-800-channel";
			reg = <0>;
		};		
		w1_b_ch1: ch@1 {
			compatible = "maxim,ds2482-800-channel";
			reg = <1>;
		};
		w1_b_ch2: ch@2 {
			compatible = "maxim,ds2482-800-channel";
			reg = <2>;
		};		
		w1_b_ch3: ch@3 {
			compatible = "maxim,ds2482-800-channel";
			reg = <3>;
		};
		w1_b_ch4: ch@4 {
			compatible = "maxim,ds2482-800-channel";
			reg = <4>;
		};		
		w1_b_ch5: ch@5 {
			compatible = "maxim,ds2482-800-channel";
			reg = <5>;
		};
		w1_b_ch6: ch@6 {
			compatible = "maxim,ds2482-800-channel";
			reg = <6>;
		};		
		w1_b_ch7: ch@7 {
			compatible = "maxim,ds2482-800-channel";
			reg = <7>;
		};				
	};
};

Then on my main.c I would need to access those channels creating one device for each channel?

const struct device *const dev = DEVICE_DT_GET(DT_NODELABEL(w1_a_ch0));
... (goes on from a_ch0  to b_ch7)
const struct device *const dev = DEVICE_DT_GET(DT_NODELABEL(w1_b_ch7));

Is there an optmized way to do this?

[teburd]

This has continued to be an ongoing issue, I've laid out how we might go about fixing it.

#63830