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IWR1443: RadarSS Calibration Custom PCB

Jason Parmenter
Intellectual 410 points
Part Number: IWR1443
Other Parts Discussed in Thread: TIDEP-0091

Hello,

We have a designed a PCB for a custom form factor / application  that utilizes the IWR1443 radar chip.  Currently we are not able to pass the sensorStartup calibration.   We have ran the OOB demo with updated mmWaveSDK and have full UART and JTAG communication.  

1)  Can someone explain or point me to the radarSS calibration procedure? (not the range offset procedure)

2)  Can someone explain how to change the bit-mask for calibration to force the sensor to pass or bypass calibration?

3)  Is their a convenient location to do this without recompiling the radarSS.bin file via RadarStudio?

4)  Is there a way to bypass calibration and force chirping to begin?  We hope that it might lead to another clue as what is wrong in our design?  

Below is the bitMap of the calibration configuration.  We usually see callibration Status = 0x1fe or 0x3fe returned after calling "sensorStart" from the CLI.   Does this bit map relate directly to the calibration status I get back after calling sensorStart?  Where does the value returned, fit within this bit Map? 

If we are returned 0x1fe = 000111111110, does this indicate that I am failing tests as shown below?  

Bit 0 = 0 - Reserved 

Bit 1 = 1 - Reserved 

Bit 2 = 1 - Reserved 

Bit 3 = 1 - Reserved 

Bit 4 = 1 - Passed LODIST Callibration

Bit 5 = 1 - Passed RX ADC DC offset calibration

Bit 6 = 1 - Passed HPF cutoff calibration

Bit 7 = 1 - Passed LPF cutoff calibration

Bit 8 = 1 - Passed Peak detector calibration 

Bit 9 = 0 - Failed  TX power calibration 

Bit 10 = 0 - Failed  RX gain calibration 

Bit 11 = 0 - Failed  TX Phase calibration 

Bit 12 = 0 - Failed RX IQMM calibration

Thanks.

  • 0
    TI__Mastermind 37500 points
    Hello,
    I answered some of this in the other thread you started.

    1) radar SS Calibration procedure is performed by the RSS itself, as part of the RF Init procedure, the Radar SS performs the bit masked Initial tests, and after the runtime period, performs the runtime tests.

    2) in the InitCal function listed in the ICD, you change the bitmask used to tell the RSS what tests to run. This is detailed in your other thread.

    3) no - ithe RSS bin is not changed. n the other thread with mmwave SDK 2.1 you can change the mask with a custom compilation of the MSS code.

    4) if we get you a custom application for TIDEP-0091. the initial calibration mask is exposed in the software, you would still have to compile this for the specific mask desired (suggest makiing it a define you can override from CCS tags. Note: you can download TIDEP-0091, you will need to work with CCS to use this. (send another post if you would like to do this).

    Regards
    Joe