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CC2340R5: How to use smartRF to send continuous TX with a non-single tone waveform output?

Part Number: CC2340R5

Hi TI members,

1. We would like to use smartRF to send continuois TX and expect to see a non-single tone waveform as the output.

But what we got was like below:

How can we configure smartRF to get something like this?

2. We also observed that the continuous TX would automatically stop after starting the test for around 5 minutes.

Should we examine our FW configurations or is it configurable in smartRF?

Thanks.

BR,

YuWen

  • Hi YuWen,

    For point 1 - 

    If I understand correctly the setting you want is to enable a modulated tone. This can be done in SmartRF Studio 8 with the "TX signal type" dialogue:

    For point 2 - 

    The continuous TX shouldn't stop as long as the test is running. I have tested continuous TX with SmartRF studio for ten minutes continuously with no issue. Your firmware should not affect this since SmartRF bypasses firmware, enters a test mode, and directly configures the memory of the device independent of any firmware. I would check to make sure you don't have anything that could be causing SmartRF studio to exit or if power to the device is being interrupted.  If this is on custom hardware then you should verify the test procedure against a LaunchPad evaluation board and see if you are having similar results.

    BR,

    Jake

  • Hi,

    Thanks for the explanation.

    For question two, we also suspected that CC2340 might have been reset by the main CPU connected to it.

    There is a process on the CPU that will reset CC2340 if it hasn't been replying certain UART messages to the CPU for a specified period of time.

    If CC2340 enters a test mode, and got reset by others, then what mode would it be in? back to normal firmware that we flashed on it?

    It can only enter the test mode again by pressing the "start testing" button, is that correct?

    Thanks.

    BR,

    YuWen

  • Hi YuWen,

    If it is reset then it would be running your standard firmware. In this case I think it is sufficient to stop and start the test again but if that doesn't work the SmartRF studio session may need to be restarted.

    BR,

    Jake

  • Hi,

    Thanks for the explanation.

    I will confirm if this situation disappear after we stop that process.

    BR,

    YuWen