HDC3020EVM: The HDC3020EVM is faulty

Hi Jiang,

Thank you for posting to the Sensing forum. 

Have you tried setting a different measurement duration or a different measurement mode?

Regards,
Pavani Tenneti

Hi Pavani Tenneti,

Yes, all measurement modes have been tested, and no measurement of temperature and humidity is shown.

Best wishes.

Jiang

Hi Jiang,

Have you used this EVM in the last few days to measure any temperature measurements, or is this EVM fresh out of the box? Do you have another EVM that can be used to verify if the GUI is working?

Regards,
Pavani Tenneti

Hi Pavani Tenneti,

     Sorry,I only have one EVM.I received the EVM no more than two weeks ago,I measured the temperature and humidity a few days ago and it was normal,suddenly it didn't work properly, and I found that when EVM was working properly, the red light was flashing, but now when it wasn't working properly, the red light was always on.

Best wishes.

Jiang

Hello Jiang,

Can you confirm if the hardware is connected on the bottom left of the screen and if the ADDR is set to 0x44?

And can you send me a screenshot of your debugger (CTRL + SHIFT+ J) when you open up the GUI and try to trigger a measurement? 

Regards,
Pavani Tenneti

Hi Pavani Tenneti,

      I can confirm that the device is connected and ADDR is 0x44 because I can read the NIST ID and so on.The attached picture is the information you want to see.Thank you.

Best wishes.

Jiang

Hi Jiang,

Have you tried using this GUI in the offline version? You can download the GUI to your laptop/computer and try to run it from the GUI Composer runtime application instead of using the online version.

Regards,
Pavani Tenneti

Hi Pavani Tenneti,

      I've tried it before, and the results are the same.

Best wishes.

Jiang

Hi Jiang,

Have you tried running this software on a different laptop or computer? 

Regards,
Pavani Tenneti

Hi Pavani Tenneti,

Yes, I've tried it on three computers. I've tried all these things.

Best wishes.

Jiang

Hi Jiang,

Can you provide some logic captures using a logic analyzer or an oscilloscope? It would be helpful to observe these in the trigger on demand mode as well as the automatic measurement mode. 

Regards,
Pavani Tenneti

Hi Pavani Tenneti,

        Figure 1 and Figure 2 show the write measurement command and read measurement command respectively in the trigger working mode.

Best wishes.

Jiang

Hi Jiang,

I am currently investing the issue on my end and I will get back to you once I have a solution or if I have more questions. 

Thanks,
Pavani Tenneti

Hi Pavani Tenneti,

    Well, looking forward to your good news.I have another request. Could you exchange this for me and send it back to your company for testing?

Best wishes.

Jiang

Hi Jiang,

If you purchased the EVM from an authorized TI distributor, please contact your authorized TI distributor for instructions to begin a product return request. If the EVM was purchased from the TI store, please see the TI store FAQs for information on returns, refunds and cancellations on TI store orders.

I will close this issue for now. 

Regards,
Pavani Tenneti