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CC1350: CC1350

Qamar Ilyas
Intellectual 290 points
Part Number: CC1350

Hi Everyone,

I want to transmit data from CC1350 to CC1111. The unmodified data rate is 50kbps. What register values should be changed in smart Rf studio to try different data rates?

Thanks,

Qamar

  • 0
    TI__Mastermind 27145 points
    Hi,

    First make sure that the SYNC words are same on both the devices. By default, they are different in SmartRF Studio. You can use either SYNC word but match it to the other.

    Then start with one of the default configuration (for example 50KBPS on CC1350) and select the CC1111 default configuration (38.4KBPS) and change the data rate to 50KBPs, Freq Dev to 25KHz and Mod to 2-GFSK in the RF Parameters files. Try the link. When you change the RF parameters in the SmartRF Studio then it sets the Registers accordingly.

    Once the link works then try other desired configurations (Data rates).

    Thanks,
    PM
  • 0 in reply to PM
    Intellectual 290 points
    Hi ,

    Thank you for responding. I am sorry for asking the basic questions but how can i change the SYNC Word (I am using SUB1-Ghgz for communication). I can't find it in Register view or RF parameters in Smart studio.

    To start with the default configuration (for example 50KBPS on CC1350), in CC1111 default configuration, I changed the data rate to 50 kBaud and Deviation to 25Khz but for Modulation Format we don't have 2-GFSK (Only GFSK or 2FSK is avaliable).

    Looking forward to hear from you.

    Thanks,
    Qamar
  • 0 in reply to Siri
    Intellectual 290 points
    Hi,

    Thank you for response. do we need to set the same sync word in CC1111 (Receiver side) because there we have no sync word. Can you please explain the configurations of CC1111 to make the communication work.

    Thank you,
    Qamar
  • 0 in reply to Qamar Ilyas
    TI__Guru* 86071 points

    I used the setup shown below:

  • 0 in reply to Siri
    Intellectual 290 points
    Thank you so much for the help :)
  • 0 in reply to Qamar Ilyas
    Intellectual 290 points

    Hi,

    If we use CC1111 as transmitter and CC1350 as a receiver, It works fine. But I want to use CC1111 as receiver. I have tried the same configurations. I got 47% error rate. Can you please help me to fixt it?

  • 0 in reply to Qamar Ilyas
    TI__Guru**** 317180 points
    On some CC1111 development kits the loads caps to the xtal are not adjusted causing a frequency offset. Are you able to check the exact frequency your CC1111 device is sending on? As an alternative you can try to adjust the frequency in 10 kHz setps up and down either on the RX or TX side to see if this improves the PER.
  • 0 in reply to TER
    Intellectual 290 points
    Hi,

    Thank you for the response. I'm not sure how can I check the exact frequency, my CC1111 is sending on but i didn't make any changes (Its frequency is same as it was, while transmitting packets). In Smart Studio when I select CC1111 as receiver, My Device Control Panel gets stuck(need to reopen Control Panel) after receiving few packets what could be possible reason for it?.

    I have tried to adjust deviation in Rx and Tx side but it didn't improve my results. Can you please some other alternate?