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LAUNCHXL-CC2640R2: CONDUCTED BLUTOOTH PACKET COMMUNICATION BETWEEN TWO KITS

Javier Nadales
Prodigy 10 points
Part Number: LAUNCHXL-CC2640R2

Tool/software:

Good morning,

I am trying to develop a Bluetooth/Zigbee packet communication application between two devices in a conducted way.

I was planning to use two LAUNCHXL-CC2640R2 devices and use the RFSmartStudio software to establish packet communication using.

I have a couple of questions about this. The first one is about the UFL connector near the antenna, is it possible to get a signal from that port or does it only communicate in a radiated way.
In the latter case, could you recommend me another kit where I could do this test in a conducted way?

The other doubt I have is if it is necessary to flash the samples so that they link, in that case, could you provide me with instructions on how to do it?

  • 0
    TI__Guru* 99930 points

    Hi,

    Thank you for reaching out.

    Javier Nadales said:
    The first one is about the UFL connector near the antenna, is it possible to get a signal from that port or does it only communicate in a radiated way.

    LAUNCHXL-CC2640R2 are shipped with the radio connected to the PCB antenna. You can flip the capacitor as indicated below so the RF signals are routed to the antenna connector instead.

    Javier Nadales said:
    The other doubt I have is if it is necessary to flash the samples so that they link, in that case, could you provide me with instructions on how to do it?

    When using SmartRF Studio, commands are written by SmartRF Studio directly in the RAM of the device. This means, the Flash content of the device does not play any role.
    Said differently, there is no need to flash the device.

    I hope these will help,

    Best regards,

  • 0 in reply to Clément
    Prodigy 10 points

    Hi Clement,

    I really appreciatte your answer. Your response was very enlightening.
    One last question, I am looking in the specs for the size of the U.FL connector, I imagine it will be compatible with I-PEX1.
    But at first glance it is difficult to know, do you know what size is the connector?

    Thank you very much again,

  • 0 in reply to Javier Nadales
    TI__Guru* 99930 points

    Hi,

    The connector is a MM5829-2700 from Murata (this information can be found within the design files of the LAUNCHXL-CC2640R2 - https://www.ti.com/lit/zip/swrc335) - I'll let you check the compatibility with the connectors you mentioned as I am not an expert of this topic.

    If I may - you may run into issues if you directly connect the RF output of a radio with the RF input of an other as the energy transmitted by the radio may saturate the receiver. This would not alter the devices, but make the communication impossible. To avoid saturation issues, reduce the transmit power (-10 dBm or bellow) or add an RF attenuator.

    I hope this will help,

    Best regards,