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CC2650 Range Extender

JoFu10
Intellectual 2385 points

Other Parts Discussed in Thread: CC2591, CC2592, CC2650, Z-STACK

Hi,

Will the CC2591 or CC2592 work well with the CC2650 as a range extender? On the website it says that the CC2591 will work with future transceivers as well. But I wanted to make sure that their impedances match, and there is no issue with using zigbee.

Thanks,

Josh

  • 0
    Guru 735695 points
    Both of them can be used as range extender of CC2650. We have use CC2592 in our design.
  • 0 in reply to YiKai Chen
    Intellectual 970 points
    Hi Yikai,
    - Did you make your own CC2650-CC2592 board?
    - If so, can the RX_TX pin be used as PA / LNA switch controlling the CC2592 so that the same Zstack can be used?
  • 0 in reply to Edwin Baaij
    Guru 735695 points
    1.Yes, we make our own CC2650-CC2592 board.
    2. We use the following pin to connect CC2650 and CC2592
    DIO7 - RF Core GPO1 controls PA_EN
    DIO13 - RF Core GPO0 controls LNA_EN
    DIO14 - must be configured as output ‘1’ to enable High Gain Mode
    3. Latest Z-Stack Home 1.2.2 hasn't supported CC2650-CC2592.
  • 0 in reply to YiKai Chen
    Expert 1405 points

    Hi Yikai,

    I was wondering if you could share with the forum the some of the software side changes required for this. I've been experimenting with the CC2650 - CC2592 and Z-Stack Home 1.2.2 and assigned those radio control pins. That should cover the hardware interface part but in software there are (afaik) some points:


    1. RSSI adjustment.

    I've discovered that this is no longer done with a macro but by radio command set in Macs.h. 0x00nn88A3 where nn is the dBm value, this is set to 3. I assume it should be changed when using the CC2592. Do you know if I can use the same value as in previous Z-Stack? Is 'nn' a signed integer dBm value?

    2. CCA RSSI Threshold

    This also changed, previous stacks write to a radio register to change it when using the LNA. In this stack it is set in the RX command and others, should it be changed there? Or is this no longer neccessary as the RSSI offset takes care of it?

    If you would share this information, it should be possible to change the firmware and use CC2592 with CC2650 at least in an experimental setup.

    Best regards,

    Sjef.

  • 0 in reply to Sjef de Krijger
    Guru 735695 points
    Hi Sjef,
    I have signed SLA to get CC2650+CC2592 software support patch. I cannot pass it to you because of SLA. If you need it, you have to sign SLA with TI representative.
  • 0 in reply to YiKai Chen
    Expert 1405 points
    Ok. Thank you. I will look into this.
  • 0 in reply to Sjef de Krijger
    Guru 735695 points
    You are welcome.