IWR1443BOOST: code for boot and load time in high accuracy lab?

feng tang

Part Number: IWR1443BOOST

Hi Michelle,

Could you tell us which section of the code in "high accuracy lab" set the boot and the image loading time of IWR1443boost (time for setting the hardware)? the first frame time now is around 310ms during the power on, the frame time is about 35ms with our chirp profile after the first frame time, we try to reduce the time for the first frame for our application

Thanks and best regards,

over 7 years ago

0 Michelle Liu over 7 years ago

TI__Genius 11405 points

Feng,

The boot and image loading is part of the device power up. Boot and images are transferred through QSPI to the chip. The frame however is after sensor start which means boot and images have been loaded. For the chirp configuration, frame period is always fixed. I guess by "first frame" you mean to include power up sequence? Please confirm.

Thanks!
Regards,
Michelle

0 feng tang over 7 years ago in reply to Michelle Liu

Genius 3595 points

Hi Michelle,
Yes, the first frame time include the power up sequence, that is recorded from the power "on" to the first data has been transferred. When I run the level_sense_demo, the boot time 157 ms, config time 57 ms, I am wondering how to achieve this in high_accuracy_lab.

Thanks and best regards,

0 Michelle Liu over 7 years ago in reply to feng tang

TI__Genius 11405 points

Feng,

For level sensing demo, my understanding is that work has been done in terms of reducing binary size to increasing QSPI speed. I'll ask our level sensing expert to comment on this.

Thanks and Regards,
Michelle

0 Michelle Liu over 7 years ago in reply to Michelle Liu

TI__Genius 11405 points

Hi Feng,

Here's what I found from our level sensing expert. The following was done to reduce power consumption:

1. Power on sequence can be modified to save on power-on power consumption: Replace power up scheme -- different PMIC, replace the LDO with ferrite beads. See swra577 www.ti.com/.../swra577.pdf for Low Cost LC Filter Solution.
2. The calibration on the first frame is usually long. To reduce it, there's a calibration step in level sensing and the result was save into QSPI. Therefore each time calibration parameters are directly loaded in and the calibration time is significantly reduced.

If you have any question in terms how that's handled, please issue ticket related to level sensing demo.

Thanks and Regards,
Michelle

0 feng tang over 7 years ago in reply to Michelle Liu

Genius 3595 points

Thanks Michelle!

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IWR1443BOOST: code for boot and load time in high accuracy lab?