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CC2640: HCI_EXT_ModemTestTxCmd API information

Kz777
Expert 7895 points
Part Number: CC2640


Hi Champs,

I have some question about HCI_EXT_ModemTestTxCmd API more information.

According to API list, this function is "Start a continuous transmitter modem test, using either a modulated or unmodulated carrier wave tone, at the frequency that corresponds to the specified RF channel.Use HCI_EXT_EndModemTestCmd command to end the test".

but, this discription didn't mention what kind of data is modulationg. For example, Similar "HCI_EXT_ModemHopTestTxCmd" mentioned "using a modulated carrier wave and transmitting a 37 byte packet of Pseudo-Random 9-bit data".

So, Is this "HCI_EXT_ModemTestTxCmd" modulate same source data as 37 byte packet of Pseudo-Random 9-bit data ?

Regards,

Kz777

  • 0
    TI__Guru** 105180 points
    Hello,

    The HCI_EXT_ModemTestTxCmd API implements the CMD_TX_TEST sequence from section "23.3.3.1.8 CMD_TX_TEST: Transmitter Test Command" in the CC26xx TRM SWCU117 (section number may change in newer doc rev).

    For the unmodulated configuration, No whitening is used (option 0).
    For the modulated configuration, PRBS-15 (mode 2) whitening is used.

    Best wishes
  • 0 in reply to JXS
    TI__Expert 7895 points
    Hi JXS,
    Thanks. We understand it.

    Regards,
    Kz777