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C1200 Continuous TX

SFarzan
Prodigy 70 points
Other Parts Discussed in Thread: CC1200

Hi,

I'm trying to implement continuous TX using CC1200 module. Based on the User Guide and SmartRF Studio, so far I have found two approaches to do so:

1) Continuous TX with synchronous serial mode: Feed a single byte repeatedly over GPIO using a two-wire serial interface (instead of SPI).

2) Continuous TX with random mode and infinite packet length: Transmit a continuous pulse using Random Mode. This way, we transmit dummy bytes (generated by PN9 generator) by sending only a STX command to the CC1200.

Is there any other way to implement continuous transmission using CC1200?

I would appreciate any help regarding this issue.

  • 0
    TI__Guru**** 317180 points

    Since you are asking for other methods of continuously transmission it sounds like you are looking for a functionality not covered in 1) or 2).

    If so, what do you want to do? Please elaborate.

  • 0 in reply to TER
    TI__Mastermind 39860 points

    If you want a continuous unmodulated carrier set CFM_DATA_CFG = 0x1.

    Easiest is to use SmartRF Studio. Select "Continuous TX "tab and then select between "modulated" (with data format = random mode) or "unmodulated".

  • 0 in reply to TER
    Prodigy 70 points

    Thanks for your answers. I'm trying to prepare the module for FCC testing, because of that I wanted to know all the options and choose the best one for that purpose. I know that I have to use an unmodulated signal (as Sverre suggested). 

    Is there any specific approach you recommend for FCC test? I appreciate your help.

  • 0 in reply to SFarzan
    TI__Guru**** 317180 points

    For FCC testing you need:

    - To send a CW. Only one register is needed to set for this.

    - Sending random data. Option 2 in your first post is the recommended way.