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CC3135: Set TX Power in transceiver mode

Antoine CHONE
Prodigy 20 points
Part Number: CC3135
Other Parts Discussed in Thread: CC3235S,

Hi,

I use the transceiver mode to test TX emission during ECM tests. It works well with the frequency channel selection. I can test from channel 0 to channel 13 but i don't see any difference in the power level of TX emission...

Maybe i've forgotten something important. The power level seems to be the same with an argument value of 0, 5 or 15.

Kind regards,

Antoine

The command used to change the power level is : 

sl_SetSockOpt(wTransceiverSocket, SL_SOL_PHY_OPT, SL_SO_PHY_TX_POWER, &wPower, sizeof(wPower));

  • 0
    TI__Mastermind 46465 points

    Hi Antoine,

    Do you by chance have our GUI based Radio Test tool? I would encourage that you use this tool when doing these RF/EMC tests as it allows simple yet concise control over the radio.

  • 0 in reply to Dylan Hubbard
    Prodigy 20 points

    Hi Dylan,

    It could be an option to use Radio Test Tool. I'll ask some updates on HW to exchange data on UART or SPI directly from my PC to the chipset. 
    But, at the end, it won't be possible to use this way. It will just help me to determine if the error comes from the chipset FW version or from my implementation, right ?

  • 0 in reply to Antoine CHONE
    TI__Mastermind 46465 points

    Hi Antoine,

    Yes that is correct. There are certain dependencies for these host commands, so it will help me rule those out:

  • 0 in reply to Antoine CHONE
    Guru 80445 points

    Hi Antoine,

    I think best way for you is to implement radio tools commands into your firmware. Please check files radiotool.c/.h indise radio tool directory (Source Files\Source Projects\radiotool_CC3235S_LAUNCHXL_tirtos_ccs\). Because network part of CC3135 and CC3235 is same, you can use same sl_ API calls as CC3235 radio tool code.

    Jan

  • 0
    Prodigy 20 points

    Hi guys, 
    I've downloaded Radio Tool GUI, modified my HW to connect the chipset to my PC through UART. I'm able to discuss with the chipset using SLImageCreator.exe. 

    Unfortunatly, i'm not able to use Radio Tool, after a long timeout trying to connect to the chipset (using the same COM port obviously), i got this message. 

    Do you have any tips for making it work?

  • 0 in reply to Jan D
    Prodigy 20 points

    Hi Jan, 
    In radiotool.c, in the RadioStartTX function, i can't choose the TX power level. I can set the tone power level (from -25 to 25) but it's not the global TX level power (from 0 to 15) right? Can i conclude that we can't configure TX power level during continuous emission test? If the answer is yes, it's ok, i just need to know quickly. During the tests, we will probably be always at maximum TX power. 

    Antoine

  • 0 in reply to Antoine CHONE
    Guru 80445 points

    Hi Antoine,

    This depends on TX mode. At CV mode you can set tone only. But at continuos mode you can set TX power.

    Jan