accel_polling template on Thingy91 does not find accelerometers

RE: accel_polling template on Thingy91 does not find accelerometers

runsiv — Tue, 15 Aug 2023 07:10:29 GMT

Haha glad it worked out for you. Documentation is good to have, but sometimes the jump between documentation and creating something can be a bit iffy, that why we have Devzone.

Best of luck

Runar

RE: accel_polling template on Thingy91 does not find accelerometers

Brian Fuller — Mon, 14 Aug 2023 21:46:18 GMT

Thank you Runar. Your solution works very well. I'll also take your suggestion to go though the DevAcademy. At one time I worked for a software company as a developer and through my close association with the support staff I learned that many user problems could be solved via the rule of "RTFM" or "Read The Fu**ing Manual". I'll read the manual.

Best regards,

Brian

RE: accel_polling template on Thingy91 does not find accelerometers

runsiv — Fri, 11 Aug 2023 05:49:49 GMT

Hi,

Since you are new to our devices I would recommend taking the time to go trough the fundamentals course on DevAcademy, at least I felt it very helpful when I started with Nordic devices. You can also have a read here regarding overlay and device tree

As for creating a overlay file. The easiest is to open the input files section when you have select nRF Connect extention in VScode

And click on the create overlay and it will be created with the correct naming. So in my case it will get the name thingy91_nrf9160_ns.overlay

You should be able to you copy past what I sent you and it should work.

Don't worry about asking questions if there are things you don't understand, that is why we have Devzone

Regards

Runar

RE: accel_polling template on Thingy91 does not find accelerometers

Brian Fuller — Thu, 10 Aug 2023 18:30:08 GMT

Hello Runar,

Thank you for your prompt response.

My prj.conf file is shown here

CONFIG_STDOUT_CONSOLE=y
CONFIG_SENSOR=y
CONFIG_CBPRINTF_FP_SUPPORT=y
# The following are used with /usr/bin/JLinkRTTViewer
CONFIG_LOG=y
CONFIG_UART_CONSOLE=y
CONFIG_RTT_CONSOLE=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_UART_INTERRUPT_DRIVEN=y

The following CONFIG_ values in your prj.conf

CONFIG_SPI=y
CONFIG_ADXL362=y
CONFIG_ADXL372=y

and were already set in my .config file.

I also added the #include <zephyr/drivers/spi.h> statement to main.c.

I do not have an overlay file in this project and because I am new to nRF programming I do not know how to set up an overlay file. I looked in the dev academy for discussion of .overlay files which says what they are but does not provide a detailed description. It is possible that I did not read the correct sections however so please forgive me if I am wasting your time. From what I did read however, I need to create a file called <boardname>.overlay and put it into the root directory of the app.

In my case of using a Thingy91 would the file be named Thingy91.overlay, nRF9160.overlay, or something else?

Also, can I copy the text from your overlay file that you provided above?

Thank you again,

Brian

RE: accel_polling template on Thingy91 does not find accelerometers

runsiv — Thu, 10 Aug 2023 08:23:39 GMT

The sample template is nearly done, however it does not include the overlay for the senors, nor did it include the changes needed to prj.conf to add the sensors.

I did not have a thing91 laying around, but I tested on a thing53. So this is adjusted for a thingy91 expect the code output.

In the overlay for the Thing91 (the adxl372 part is not tested)

/ {
    aliases {
		accel0 = &adxl362;
        accel1 = &adxl372;
    };
};

&spi3 {
	compatible = "nordic,nrf-spim";
	status = "okay";
	cs-gpios = <&gpio0 8 GPIO_ACTIVE_LOW>, <&gpio0 7 GPIO_ACTIVE_LOW>;

	pinctrl-0 = <&spi3_default>;
	pinctrl-1 = <&spi3_sleep>;
	pinctrl-names = "default", "sleep";
	adxl362: adxl362@0 {
		compatible = "adi,adxl362";
		spi-max-frequency = <8000000>;
		reg = <0>;
		int1-gpios = <&gpio0 9 0>;
	};

	adxl372: adxl372@1 {
		compatible = "adi,adxl372";
		spi-max-frequency = <8000000>;
		reg = <1>;
		int1-gpios = <&gpio0 6 0>;
	};
};

In prj.conf

CONFIG_STDOUT_CONSOLE=y
CONFIG_SENSOR=y
CONFIG_CBPRINTF_FP_SUPPORT=y
CONFIG_SPI=y
CONFIG_ADXL362=y
CONFIG_ADXL372=y

In the top of main.c

#include <zephyr/drivers/spi.h>

From the device

[10:21:54:694] spi-dev-adxl362@0 [m/s^2]:    (   -0.421685,    -0.598205,    -7.845320)␍␊
[10:21:55:695] spi-dev-adxl362@0 [m/s^2]:    (   -0.392266,    -0.441299,    -7.972806)␍␊
[10:21:56:695] spi-dev-adxl362@0 [m/s^2]:    (   -0.509945,    -0.235359,    -7.796286)␍␊
[10:21:57:696] spi-dev-adxl362@0 [m/s^2]:    (   -0.598205,    -0.372652,    -8.188552)␍␊
[10:21:58:696] spi-dev-adxl362@0 [m/s^2]:    (   -0.617818,    -0.284392,    -8.012033)␍␊
[10:21:59:697] spi-dev-adxl362@0 [m/s^2]:    (   -0.392266,    -0.166713,    -7.894353)␍␊
[10:22:00:697] spi-dev-adxl362@0 [m/s^2]:    (   -0.431492,    -0.529559,    -7.923773)␍␊
[10:22:01:698] spi-dev-adxl362@0 [m/s^2]:    (   -0.539365,    -0.392266,    -8.041453)␍␊
[10:22:02:698] spi-dev-adxl362@0 [m/s^2]:    (   -0.480525,    -0.313812,    -8.208166)␍␊

Regards

Runar

RE: accel_polling template on Thingy91 does not find accelerometers

runsiv — Thu, 10 Aug 2023 07:42:10 GMT

Hi Brian, I will look into your case

Could you post your prj.conf and any overlay file for the thing91?

I have not used the sample sensor example before, so I will set it up myself and see if I can get it working

Regards

Runar