• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 1630 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AWR1243: Cascaded EVM - no data file in SSD after successfully running Cascade_Capture.lua script

u4564981
Intellectual 445 points
Part Number: AWR1243
Other Parts Discussed in Thread: MMWCAS-DSP-EVM, TDA2

Hello there, 

Following the cascade user guide, I ran lua scripts of "Use Case 1: Test Source" using mmWave Studio. Both of the scripts ran successfully. While cascade_capture script was running, it was also displaying in output shell as "Capturing AWR device data to the TDA SSD.." However, when I checked the folder /mnt/ssd, there was no data in the capture directories. I am not sure why.

In the cascade_capture script, I increased num_loops to more than 1, changed num_frames_to_capture to 1000 to see if they have any effect. And when I gave new names to capture directories, new directories were forming in /mnt/ssd but none of them had data, but no data. 

I am attaching screenshots of output shell. What possible reasons could be for no data getting stored in the ssd?

Thank you

  • 0
    TI__Mastermind 30405 points

    Hi Arvind,

    We have assigned this to the relevant expert and they should respond back to you next week. Thanks for your patience.

    Regards

    -Nitin

  • 0 in reply to Nitin Sakhuja
    Intellectual 445 points

    Hi Nitin,

    Thank you for assigning the issue to expert - I'm still waiting to hear from them. Some suggestions on how to address the issue would help me get something from the cascade module.

    Best,

    Arvind

  • 0 in reply to u4564981
    TI__Genius 17200 points

    Hi Arvind, 

    We have been seeing this as well on a few MMWCAS-DSP-EVM.

    I believe it may be an FPGA startup timing issue. If the FPGA do not configure, then the CSI2 data will not be captured by the TDA2 host. If the host requests N AWRx device datasets, and sees less than N streams come in, it will not write anything to disk. Here is how you can check it: 

    • Run the manual or lua script mmWave Studio set of the master and slave devices - everything up to starting the framing/capturing process
      • At this point, the TDA2 releases the FPGA from reset and allows them to configure themselves from their associated SPI flash memories
    At this point, please check each of the FPGA CDONE LED on the back of the MMWCAS-DSP-EVM PCB (reference designators D17, D22, D25, D27)
    • If any of these LED is not lit, then please power cycle the EVM (remove and apply 12V power) and restart the mmWave Studio setup of the Cascade EVM system again
    • My observation is that on effected systems, usually restarting and re-configuring just a few times results in a good startup (all FPGA configured, CSI2 data captures successful)
    • I also observe that this seems to happen at lower ambient temperatures, 50F or so

    I am looking into an update for the TDA2 software which may improve this FPGA startup problem. 

    Please see if that helps and let me know. 

    Thank you,

    -Randy

  • 0 in reply to Randy Rosales
    Intellectual 445 points

    Hi Randy, 

    Thanks for your suggestions. Power recycling a few times did make the cascade module work. 

    Thank you