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The data packet is possible in CC1101 , but can not receive it.

Kenji3
Intellectual 400 points
Other Parts Discussed in Thread: CC1101

hi,

I use CC1101 on my board.

The packet transmission is possible, but the reception of the packet does not come at most.

I measured the electric wave output of the about 7mW degree in my spectrum analyzers by the consecutive output by an moduration wave of GFSK with this board.

I don't think of the electric wave output circuit to be it with such the bad design.

I would like to tell me by a flag and the function that should check in cc1101 to look for the cause that cannot receive; thanking you in advance.

Thanks.

  • 0
    TI__Guru* 81731 points

    Hi

    Have you followed our reference design, what register settings are you using and what antenna are you using? How do you know that your transmission is OK? Have you looked at transmitted data using a spectrum analyzer or are you only assuming it is OK because you get the packet sent interrupt?

    It is not possible to suggest what can be wrong without knowing more about your design.

    BR

    Siri

     

  • 0 in reply to Siri
    Intellectual 400 points

    Hi Siri,
    Thank you for your reply.

    I would like to write what I investigate this problem and understood.
    I judged the quality of electric wave from a decibel level of the spectrum analyzer so far.

    However, I confirmed that the communications distance between the real terminal was remarkably bad.
    Therefore I confirmed the RSSI level at the time of the packet reception.

    Then the terminal of the problem confirmed that it was numerical value of the -70dB degree even by the communication between several meters.

    In the case of several meters, the RSSI level of around 100 meters of terminals which can communicate at distance is displayed with about -30dB.

    On investigation sensitivity of the -30dB degree came to appear in various ways when I knew that I had a problem with the parts multiplier of the antenna circuit part of one terminal and improved it.

    thanks.