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MAX31865 Production
The MAX31865 is an easy-to-use resistance-to-digital converter optimized for platinum resistance temperature detectors (RTDs). An external resistor sets...
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MAX31865 on Analog.com

AD5593R Production
The AD5593R has eight input/output (I/O) pins, which can be independently configured as digital-to-analog converter (DAC) outputs, analog-to-digital converter...
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AD5593R on Analog.com

Is there a way to use max31865 through linux iio driver?

chojae

on Sep 12, 2023

Category: Hardware

Product Number: max31865

hello.

I have already modified the rpi-ad5593r-overlay.dts file on the CM4 Board to suit my environment.

And I'm using the pyadi-io Module to use AD5593R.

MAX31865 (not MAX31856) also had a pyadi-iio example.

https://github.com/analogdevicesinc/pyadi-iio/blob/master/examples/max31865.py

However, there was no dts file involved. Is there a way to use MAX31865 through linux iio driver?

0 mhennerich

on Sep 12, 2023 2:39 PM
Not sure I understand - there is a mainline IIO driver for MAX31865 here:

https://elixir.bootlin.com/linux/latest/source/drivers/iio/temperature/max31865.c

-Michael
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0 chojae
on Sep 12, 2023 3:54 PM in reply to mhennerich
Do you know where the max31865 device tree is?
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0 mhennerich

on Sep 12, 2023 3:58 PM in reply to chojae

You can find an example here:

https://elixir.bootlin.com/linux/latest/source/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml

examples:
  - |
    spi {
       #address-cells = <1>;
       #size-cells = <0>;

       temperature-sensor@0 {
           compatible = "maxim,max31865";
           reg = <0>;
           spi-max-frequency = <400000>;
           spi-cpha;
           maxim,3-wire;
       };
    };