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CC1352R: CC1352R1 can be programmed, but not transmitting

Dominique Ingala1
Prodigy 60 points
Part Number: CC1352R

Hi,

I designed a board based on CC1352R1 Dev kit. I attached the schematic. But the board doesn't transmit at all. 

The device is Silicon Rev.C, so I'm running the Dev Kit  Rev:0.4.0, FW SDK1,60RC1 1152.

I used the simplelink_cc13x2_sdk_2_30_00_45 and CCS v8.1.0. 

I've tested rfCarrierWave or rfPacketTx. It's working with the Dev kit.

However, when I try the same code examples with my board, everything else works, except the RF.

I can program my board to test the Buttons, LEDs, Timers... all is good. But it's only the radio part which is not operating.

I tried SmartRf Studio 7 to test RF transmit.  It's also running. But I don't see any signal on the Spectrum Analyser.

Any guidance, please.

Regards,

Dominique

IoT Noise Generator_-01-A_Schematics_SMT.PDF

  • 0
    TI__Guru**** 317180 points

    - Generally we don't support questions related to rev C since this is a pre-production version that has been replaced by rev E. 

    Schematic: 

    Not fully understanding the power options here:

    Which of the power supply options described in "11 Power Supply Configuration" in https://www.ti.com/lit/pdf/swra640 do you plan to switch between?

    --

    For the issue you are seeing, if you are actually using a 24 MHz xtal and not 48 MHz (as CC1352R is designed for) this probably explains why you have a problem. 

  • 0
    Prodigy 60 points

    Hi,

    Thanks a lot for your reply. I appreciate it very much knowing that you don't support the C version anymore.

    In my board, resistors R103 and R105 are not placed. I was just making provision in case I needed to switch between power configuration.

    Let me investigate on the external crystal frequency.  Thanks for the hint.

    Regards,

    Dominique

  • 0 in reply to TER
    Prodigy 60 points

    Yes, the issue was my wrong crystal value. It's working now after I replaced a 48 MHz crystal.

    Thanks for the hint.

    Dominique