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[FAQ] IWRL6432AOP: Sensor crashing on factory calibration command (rl_fecssRfFactoryCal)

Nathan Block
Mastermind 36090 points
Part Number: IWRL6432AOP
Other Parts Discussed in Thread: IWRL6432

Tool/software:

This is an FAQ post, where a TI expert writes the question and response to a common issue that some customers may face during development.

Question: My IWRL6432 device is crashing on the call to rl_fecssRfFactoryCal(). For some reason, it keep rebooting to the demo start like the picture below. I did NOT modify any of the software or hardware, and I'm using a configuration file that never showed any issues before. Why is this happening?

  • 0
    TI__Mastermind 36090 points

    What may be happening here is the sensor is browning out from power supply droop when the calibrations are called. The calibrations will boot full RF so this is typically the highest power draw of the system, but even without these calibrations, similar droops might occur later during operation. These may cause the device to reset and try to run the startup again, which is why you see it repeating. What is the current limit for the power supply? Can you probe this line to see if there is a voltage droop?