STM32H753 + STPMS2L + DFSDM : PT100 example using STM32CubeMx

[S.Kamath]

Hi,

We're using STM32H753 (2 nos.) and STPMS2L in new product development. I'm looking for PT100 thermometer DFSDM example code generation using STM32CubeMx. Any example code available on PT100 voltage & current sensing on 2-channels?

[Imen.D]

Hello @S.Kamath​ ,

You'll probably want to review the DFSDM example within STM32CubeH7 MCU package:

\STM32Cube_FW_H7_V1.9.0\Projects\STM32H743I-EVAL\Examples\DFSDM\DFSDM_AudioRecord

This example shows how to use the DFSDM HAL API to perform stereo audio recording, and it can be a starting point for you to learn about DFSDM and to develop your own application.

Then, you can modify this working application depending on your needs.

This STM32H7 online training provides a support for Digital FIlter for SD Modulators Interface (DFSDM).

You can also refer to this AN4990 Application note Getting started with sigma-delta digital interface on applicable STM32 microcontrollers

Hope this helps you!

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Imen

[S.Kamath]

Thanks Imen for prompt response.
Couple of questions –
1. Is there any STM32CubeMx tutorials available on DFSDM?
2. Please find screenshot below for 2-wire PT100 thermometer measurements. Please let me know how to connect 4-wire PT100 thermometer?
[cid:image001.png@01D7B183.E065D080]
Best Regards,
Sadashiva Kamath

[S.Kamath]

Hi,
Thanks for details, this helps..!
Is there any STM32 microcontroller’s DFSDM example available for PT100 thermometer by using STM32CubeMx?
Best Regards,
Sadashiva Kamath