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CC2674P10: How to enable 20dB High PA?

Island Wei
Prodigy 640 points
Part Number: CC2674P10
Other Parts Discussed in Thread: CC2652P7, SYSCONFIG, CC1352P, CC1352P7, LP-CC1352P7

Tool/software:

Hi team,

My customer has an ongoing project that using CC2652P7 but they use CC1352P7-4 launchpad instead, I have told them 20dB is related to the HW and the RF design of CC1352P7-2 can make it, we do know it’s right for -4 board, but we tried to change it into CC1352P7-2 using Sysconfig, it’s not allowed to do so, yet we do have -2 board on TI.com pages LAUNCHXL-CC1352P Evaluation board | TI.com.

 Even with Board set to NONE, there is no Device to choose. Then how to do it with CCS or how to enable 20dB in SW?

  • 0
    TI__Mastermind 32480 points

    Hello Island,

    The page you link to is for launchpads for CC1352P (not P7): https://www.ti.com/product/CC1352P

    The launchpads for CC1352P7 are here: https://www.ti.com/tool/LP-CC1352P7

    • LP-CC1352P7-1: 868/915 MHz up to 20 dBm, 2.4 GHz up to 5 dBm
    • LP-CC1352P7-4: 433 MHz up to 13 dBm, 2.4 GHz up to 10 dBm

    To enable the higher output power, you could try:

    1. Take the ti_radio_config.c/h (<project>/Debug/syscfg/ti_radio_config.c/h), then follow steps here to make sure sysconfig doens't generate it anymore
    2. Open SmartRF Studio 7 with CC2652P7 in BLE mode or IEEE 802.15.4 mode
    3. Select the "RF Design Based On" (-2 variant*) and "TX Power" (20dBm), then copy the relevant TX power override from there to your ti_radio_config.c/h

    Recommend to play around with these steps to see if it can be achieved.

    *I'm not sure why the "LP_CC1352P7-2" is showing in SmartRF Studio 7, even though we don't have it on ti.com... if that still interests you, I recommend to create a separate post focused on that topic.

    Thanks,
    Toby

  • 0 in reply to Toby
    TI__Prodigy 640 points

    Hi Toby,

    Thanks for your reply, the EE is an Smart AP, adding a gateway of IoT protocols, so the 20dBm is required.

    The problem is noticed when customer updates the SDK from 6.30 to 7.40, they find that they cannot set TxPower to 20dBm. I think it's a right change because they use the -4 board design.

    Do we ever have LP_CC1352P7_2 board? I never seen it before...

  • +1 in reply to Island Wei
    TI__Mastermind 32480 points

    Hello Island,

    Island Wei said:
    the EE is an Smart AP, adding a gateway of IoT protocols, so the 20dBm is required.

    Agree, 20dBm TX power could be useful in a gateway / AP use case.

    Island Wei said:
    The problem is noticed when customer updates the SDK from 6.30 to 7.40, they find that they cannot set TxPower to 20dBm.

    Was it possible to set 20dBm in 6.30 SDK?

    Island Wei said:
    they use the -4 board design.

    This one supports up to 10dBm:

    • LP-CC1352P7-4: 433 MHz up to 13 dBm, 2.4 GHz up to 10 dBm

    Island Wei said:
    Do we ever have LP_CC1352P7_2 board? I never seen it before...

    I have not seen this board either... possibly there was internal testing with CC1352P7 populating a LAUNCHXL-CC1352P-2 board.

    Thanks,
    Toby

  • 0 in reply to Toby
    TI__Prodigy 640 points
    Toby said:
    Was it possible to set 20dBm in 6.30 SDK?

    Yes.