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AWR2243: Run Time Calibration

yan wang
Prodigy 80 points
Part Number: AWR2243

Hello,

    We have some questions about ne-time calibration  of run-time calibration. 

    Steps:  1)The application reads the temperature

               2) If the temperature variation is more than 10°C, the App calls rlRfRunTimeCalibConfig.

Question 1: Is our calibration process correct?

Question 2:  When I configure runTimeCalibCfg.reportEn =0X01,  Every time you call rlRfRunTimeCalibConfig,about 10 seconds will be received asynchronous notification, and the next time you call the calibration interface rlRfRunTimeCalibConfig, the program will die in the RF interface function. When I disable reportEn, the calibration will proceed normally. Why?

    Fellowing is our configuration:

    runTimeCalibCfg.oneTimeCalibEnMask = 0x610; /* enbale TX_POWER、RX_GAIN、LODIST cal */
   runTimeCalibCfg.periodicCalibEnMask = 0x00; /* Clear periodic enable mask */
  runTimeCalibCfg.calibPeriodicity = 0x00; /* Set periodicity to zero */
  runTimeCalibCfg.reportEn = 0x01; /* enable report */
  runTimeCalibCfg.txPowerCalMode = 0x00; /* OLPC + CLPC */
  runTimeCalibCfg.CalTempIdxOverrideEn = 0x07; /* all overrides */
  runTimeCalibCfg.CalTempIdxTx = 0x06; /* 20-30 degrees */
  runTimeCalibCfg.CalTempIdxRx = 0x06; /* 20-30 degrees */
  runTimeCalibCfg.CalTempIdxLodist = 0x06; /* 20-30 degrees */

  • 0
    TI__Mastermind 32865 points

    Hi,

    Please find my comments below. 

    yan wang said:
    Question 1: Is our calibration process correct?

    Yes, this is correct. One alternate way for this will be to enable the periodic calibrations. Internally in this the temperature is automatically checked and if a variation of more than 10 C is there then only the calibrations take place. Otherwise, they are skipped. 

    yan wang said:
    Question 2:  When I configure runTimeCalibCfg.reportEn =0X01,  Every time you call rlRfRunTimeCalibConfig,about 10 seconds will be received asynchronous notification, and the next time you call the calibration interface rlRfRunTimeCalibConfig, the program will die in the RF interface function. When I disable reportEn, the calibration will proceed normally. Why?

    What do you mean by the program will die. It should report an error code in case any failure is there. Can you share the error code received. 

    Thanks,

    Pradipta.

  • 0 in reply to Pradipta Bandyopadhyay
    Prodigy 80 points

    Thank's for your reply.

    Question 1:  You mean we can use periodic calibration replacing one-time calibration?  Does periodic calibration executed depending on calibration periodicity? And how do we control periodic caliration to be executed depending temperature but not time?  I can't find corresponding description.

    Question 2:  No report or error code. Just chirp transmitting stop. 

  • 0 in reply to yan wang
    TI__Mastermind 32865 points

    Hi,

    Please find my comments below. 

    1) No, the periodic calibrations cannot be used in your design. As you are using the override feature periodic calibrations are not suggested to be used as per the ICD. You can ignore/skip my previous comment on the alternate way.

    2) I see that you are using the overrides. Can you confirm if this note from the mmwave radarss release note is being followed.

    Thanks,

    Pradipta.