HDC3020EVM: Regarding temperature data output when I2C polling rate setting is "as fast as possible"

Daisuke Higa

Genius 4360 points

Part Number: HDC3020EVM

Hi support team.

We have a question regarding temperature data output when I2C polling rate setting is "as fast as possible".

We got faulty data sometimes when I2C polling rate setting is "as fast as possible".(For example 25C -> 10C)

When I2C polling rate setting is the other(for example 500ms), we got good data.

Why we got is faulty data?

Is it normal to get faulty data with the "as fast as possible" setting?

Best regards,

Higa

over 2 years ago

0 Josh Wyatt over 2 years ago

TI__Guru* 91206 points

Dear Higa -

Would you by chance be able provide a screen shot of what you consider "faulty data", for our complete understanding of your perspective?

0 Daisuke Higa over 2 years ago in reply to Josh Wyatt

Genius 4360 points

Wyatt-san

Thank you for your rely.

I attached a screenshot and Excel file.

Regards,

Higa

HDC3020Test30Rh_24C.xlsx

0 Nicole Khoury over 2 years ago in reply to Daisuke Higa

TI__Genius 10080 points

Hi Higa-san,

I have not been able to recreate this behavior using an HDC3020EVM and the online GUI. Can you confirm that you are using the latest version of the GUI from dev.ti.com? This can be found at the link below:

https://dev.ti.com/gallery/info/THSApps/HDC3020EVM/

Best regards,
Nicole

0 Daisuke Higa over 2 years ago in reply to Nicole Khoury

Genius 4360 points

Hi Nicole-san

Sorry for the delay.Thank you for your information.

The issue is solved.

Thanks!

Regards,

Higa

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HDC3020EVM: Regarding temperature data output when I2C polling rate setting is "as fast as possible"