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CC1311P3: TX does not work correctly when open two RF handle

Kimi Hu
Mastermind 6115 points
Part Number: CC1311P3

Hi,

In our application, we open two rf handle for different radio setting. In our application, the second setting doesn't work as good as the other. We also reproduce this problem with "rfPacketTx example".

only rfHandle1 : rssi1 = -2x (receive by smartRF studio7)

only rfHandle2 : rssi1 = -2x (receive by smartRF studio7)

rfHandle1 + rfHandle2 : rssi1 = -2x, rssi2 = -7x

I provide my example for your reference

syscfg.zip

  • 0
    TI__Mastermind 18275 points

    Hi,

    For clarity, please could you give information on the 2 different TX settings used and the RX settings in SmartRF Studio? It would allow us to debug for you this more quickly.

    Regards,
    Zack

  • 0 in reply to ZC
    Mastermind 6115 points

    Hi,

    I provide my tx setting in my first post(syscfg.zip). The Rx are showing below

  • +1 in reply to Kimi Hu
    TI__Guru* 86241 points

    Hi Kimi

    Unfortunately I will not be able to do any testing before tomorrow as I am not in the office and do not have the CC1311 available, but I have some questions to your testing.

    When you are testing one handle at the time and everything is OK, as your testing with the exact same setting as you have provided (using the rfPacketTX code?)

    If you want 14 dBm output power for both cases, why are you sing the high PA in one of the settings, and the normal PA for the other setting? Is this on purpose? Have you tried using the same PA for both cases, since you want the output power to be the same?

    Siri

  • 0 in reply to Siri
    Mastermind 6115 points

    Hi Srir,

    When you are testing one handle at the time and everything is OK, as your testing with the exact same setting as you have provided (using the rfPacketTX code?) --> YES

    If you want 14 dBm output power for both cases, why are you sing the high PA in one of the settings, and the normal PA for the other setting? Is this on purpose? Have you tried using the same PA for both cases, since you want the output power to be the same? --> Actually, We use 20 dBm on our application. We don't use normal power. The 14 dBm just for test and we use CC1311P3 LaunchPad for this test.

  • +1 in reply to Kimi Hu
    TI__Guru* 86241 points

    Can you please share the settings you are using for the 20 dBm case as well? Is this code not running on the LP?

    If not, are you suing the same switch etc. as on the LPs or have you changed this on your HW.

    Can you please test the 14 dBm settings on the CC1311P LP, but use the same PA for both cases. 

    The settings you provided shows that the 14 dBm settings for RF_cmdPropRadioDivSetup is using the high PA, while the 14 dBm settings for RF_cmdPropRadioDivSetup_Img uses the normal PA.

    Siri

  • 0 in reply to Siri
    Mastermind 6115 points

    Hi Siri,

    Thank you. I will check again and let you know the result

  • 0 in reply to Siri
    Mastermind 6115 points

    Hi Siri,

    After using "rfc_CMD_PROP_RADIO_DIV_SETUP_PA_t", it works correctly. Thank you