How to configure two or more sensors (Having different Address) on same i2c bus in Zephyr RTOS - NRF connect SDK

RE: How to configure two or more sensors (Having different Address) on same i2c bus in Zephyr RTOS - NRF connect SDK

lsw_astro — Wed, 19 Jul 2023 12:00:37 GMT

Did You ever manage to make it work?
Would be great if You could deliver on Your promise and share overlay file.

BR.

RE: How to configure two or more sensors (Having different Address) on same i2c bus in Zephyr RTOS - NRF connect SDK

pradeep8892 — Mon, 01 Aug 2022 06:00:11 GMT

Good Evening Helsing,

Thanks you so much for your reply!

Currently I working on it and i'll share the overlay file with you soon.

Thanks & Regards,

Pradeep

RE: How to configure two or more sensors (Having different Address) on same i2c bus in Zephyr RTOS - NRF connect SDK

helsing — Fri, 29 Jul 2022 22:23:26 GMT

Here is a mock up example, inspired by the article Introduction to devicetree.

Create a file named <board_variant>.overlay and add the code below to this file. Place the file in your project folder.

Read more about overlay files in the getting started guide for nRF Connect SDK:

                i2c0 {
                        compatible = "nordic,nrf-twim";
                        status = "okay";
                        label = "I2C_0";
                        sda-pin = <30>;
                        scl-pin = <31>;
                        clock-frequency = <I2C_BITRATE_FAST>;

                        apds9960@39 {
                                compatible = "avago,apds9960";
                                label = "APDS9960";
                                reg = <0x39>;
                        };
                        ti_hdc@43 {
                                compatible = "ti,hdc", "ti,hdc1010";
                                label = "HDC1010";
                                reg = <0x43>;
                        };
                        mma8652fc@1d {
                                compatible = "nxp,fxos8700", "nxp,mma8652fc";
                                label = "MMA8652FC";
                                reg = <0x1d>;
                        };
                };

Here is another example:

&i2c2 {
    compatible = "nordic,nrf-twim";
	status = "okay";
	sda-pin = < 30 >;
	scl-pin = < 31 >;
    clock-frequency = <I2C_BITRATE_STANDARD>;  
	

	bme280@82 {
		compatible = "bosch,bme280";
		reg = <0x82>;
		label = "BME280";
	};
	
		bme280@76 {
		compatible = "bosch,bme280";
		reg = <0x76>;
		label = "BME280";
	};
	
};

Please also consult this guide: TWI/I2C implementation with nRFx TWIS Driver.

Would you be able to share your overlay file?

Best regards,

Håkon

RE: How to configure two or more sensors (Having different Address) on same i2c bus in Zephyr RTOS - NRF connect SDK

noob_123 — Fri, 29 Jul 2022 09:53:38 GMT

Did you find any example?

RE: How to configure two or more sensors (Having different Address) on same i2c bus in Zephyr RTOS - NRF connect SDK

helsing — Wed, 27 Jul 2022 20:47:06 GMT

Hi Pradeep,

I will look for an example and get back to you.

Best regards,

Håkon