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CC1352P: CC1352P Custom Board : SmartRF Studio Fails [BLE (2.4GHZ) and Sub 1GHz]

Sanjay Jayadev
Intellectual 615 points
Part Number: CC1352P
Other Parts Discussed in Thread: CC2540

I designed a custom board using the CC1352P but was unable to use the SmartRF tool to verify the Radio TX/RX functionality for both 2.4GHz and sub 1 GHz. However I was unable to get SmartRF Studio working for the same.

The schematics is shown below:- [used the same components as used in the CC1352P1 launchpad schematics]


But I tried to flash the board with two examples :- using the SDK CC13x2_26x2_sdk_3_20_00_68.

1) For BLE (Simple peripheral) :-

- Set the advertisement interval to 500ms and single channel transmission, I could observe the TX on BLE Sniffer(CC2540) and also on a current-meter.

2) SUB 1GHZ (rfEasyLinkTX )

I could only view it on the current-meter. 

I'm relatively new to this and any help will be appreciated. 

Thank you

  • 0
    TI__Genius 9215 points

    Hi,

    It's clear to me what your problem actually is, can you please elaborate?

    Is your problem that you can't use Smart RF Studio with this board?

    Best Regards,

    R.M

  • 0 in reply to R.M
    Intellectual 615 points

    Hello, 

    Yes, my problem is that I'm not able to use Smart RF Studio with this board.

    In order to verify if the board is functional I made use of two examples from the SDK CC13x2_26x2_sdk_3_20_00_68, for BLE and Sub 1GHz. 

    I attached the current-meter screenshots so that you can help me confirm if its a fault in the schematics or is there anything else to be done to get this board working.

    Kindly help me out.

    Thanks

  • 0 in reply to Sanjay Jayadev
    TI__Genius 9215 points

    Hi,

    So you problem is that you board is not recognized in Smart RF Studio? What Debugger do you use?

    What do you use to flash the two examples?

    Best Regards,

    R.M

  • 0 in reply to R.M
    Intellectual 615 points

    Hi, 

    It's more like my board is recognized by SmartRF studio, But when I try to use it as a Transmitter and try to receive packets on another launchpad thats set as receiver, it doesn't work. 

    I flash the the chip on the custom board using a JTAG via XDS110 out pins on the launchpad with the jumpers disconnected .

  • 0 in reply to Sanjay Jayadev
    TI__Guru** 106705 points

    Hi Sanjay,

    Since the board otherwise seems functional, my guess would be that you have a frequency offset on the RF carrier due to a poorly tuned 48 MHz crystal. You can verify this by measuring the RF output on a Spectrum Analyzer.

    Refer to the crystal tuning chapter of for www.ti.com/lit/pdf/swra640 details. 

    Regards,
    Fredrik