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RF430FRL152H: NFC Temperature Sensor Project: Output Stuck at 24 °C

User1234
Prodigy 30 points
Part Number: RF430FRL152H
Other Parts Discussed in Thread: DLP-7970ABP, MSP-EXP430G2ET, , TRF7970A, MSP-FET

Tool/software:

Hello,

We have built an NFC temperature sensor using the RF430FRL152H IC. It is detected by the application you provided, but the only problem is that, while plotting data, it always shows a temperature of 24 °C.

At first, we thought the issue might be with the PCB, but after replacing it, the reading on the graph still shows 24 °C. We even heated the entire PCB up to 80 °C to see if we could get a different value, but it still shows 24 °C. We then built another PCB, and the same problem occurred.

Can you tell us why the circuit is behaving this way, or where the issue might actually be?

Thank You!

  • 0
    TI__Guru**** 191186 points

    Hi,

      Have you tried out the RF430FRL152HEVM using the TI hardware (DLP-7970ABP BoosterPack plug-in module and MSP-EXP430G2ET LaunchPad) ? What is the result?

      Which host MCU did you use? Please refer to the recommended hardware to evaluate the RF430FRL152H.

    1.3 What is the recommended hardware and software to evaluate the RF430FRL15xH? The following tools allow for full evaluation of the RF430FRL152H:

    • RF430FRL152HEVM – This EVM allows evaluation of all the capabilities of the RF430FRL15xH.

    • DLP-7970ABP BoosterPack plug-in module and MSP-EXP430G2ET LaunchPad development kit – The DLP-7970ABP uses TI's TRF7970A NFC transceiver to communicate with the RF430FRL15xH. This bundle is needed to operate the GUI for the RF430FRL152HEVM.

    • SLOC346 – Software binary to allow the TRF7970A-BNDL to interface with the RF430FRL152HEVM Windows GUI.

    • MSP-FET – Offers firmware download and debug capability to support development for the RF430FRL15xH.

    • RF430FRL152HEVM Windows GUI

      

  • 0 in reply to Charles Tsai
    TI__Guru**** 191186 points

    Hi,

      I have not heard back from you. I will close the thread for now. If you have any update, you can write back to this post and the status will change to OPEN.