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CC1350: Continuous Mode RSSI

vikas kumar24
Expert 1450 points
Part Number: CC1350

Dear all,

In my test setup i will connect a signal generator(feeding unmodulated signal i.e sine wave at certain frequency) to CC1350 launchpad which is loaded with rfPAcketRx example. I want to read the RSSI value. Which bitfield i have to read?

Thanks & Reagrds

vikas

  • 0 in reply to FI
    Expert 1450 points
    Hello FI,
    I went through the above said post. I did according to that(CMD_RX_TEST). Then i connected the signal generator to this. I fed unmodulated signal at -45 dBm. But when i am reading through
    RSSI_value = RF_getRssi(rfHandle);.

    I am getting RSSI_value as -75 dBm. Why this difference?
    In overrides settings is done for offset by -2 dB.

    Is it some dB or dBm like thing? If i want to see the RSSI through register which register should i use.
  • 0 in reply to vikas kumar24
    TI__Mastermind 21270 points
    Hi
    You can read RSSI from this register as follows:

    #define RSSIVALREG (*((volatile unsigned long*)0x40046058))
    Bits 7:0 of the register hold the current RSSI value (2's complement). If this register reads as -128 (0x80) it means that the value is not yet valid.

    Although you can read the value as shown above, we do recommend that the value be read by issuing direct command for RSSI.