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Original question:

MMWCAS-DSP-EVM: ADC data processing reference code

MMWCAS-DSP-EVM: cascade capture only demo questions

Andrew Kramer
Prodigy 130 points
Part Number: MMWCAS-DSP-EVM
Other Parts Discussed in Thread: AWR2243, MMWCAS-RF-EVM

Hello!

I have managed to get the cascade_radar_capture_only demo in processor sdk radar 3.08.00 working on my MMWCAS-DSP-EVM and MMWCAS-RF-EVM with AWR2243 sensors. When I run the demo I can use wireshark to see a continuous stream of UDP packets coming from the DSP-EVM, so I believe the demo is working as intended on the DSP-EVM. However, I can't get the matlab script radar_cascade_demo.m to produce any intelligible output. The process goes as follows:

  1. On the serial terminal connected to the DSP-EVM I start the cascade_radar_capture_only demo and select TFDTP as the network mode.
  2. I run the radar_cascade_demo with the following parameters
    1. platform: 'TI'
    2. range_depth: 10
    3. profileNum: 1
  3. The DSP-EVM acknowledges 'TFDTP Tx channel opened !!!', 'TFDTP started !!!', and 'NETWORK_TX: Connected to client (port=29172) !!!'
  4. The matlab script outputs 'Opened connection to TCP Command Server', 'Opened Connection to UDP server', and 'Sent RADAR_NW_LINK_TFDTP_INIT message on TCP socket'
  5. The matlab script opens an empty plot window
  6. About 30 seconds later the matlab script throws a bunch of unsuccessful read warnings with the message 'Warning: Unsuccessful read: The specified amount of data was not returned within the Timeout period. 'udp' unable to read any data. For more information on possible reasons, see UDP Read Warnings.'
  7. I stop the matlab script with Ctrl-C and it outputs messages that its called cleanup and closed the TCP and UDP connections
  8. The DSP-EVM outputs messages 'NETWORK: TFDTP Transmit Ack Read Failed !!!', 'NETWORK: TFDTP Transmit Ack Read Failed !!!', 'NETWORK_TX: Disconnected from client while writing header (port=29172)!!!', 'NETWORK: TFDTP Stack Closed!!!'
  9. A selection of blank plots show up in the matlab plot window.

Could you help me understand what's going on here? Could you also advise me on how I can get radar_cascade_demo to work?

Thanks so much for your help! 

- Andrew

  • 0
    TI__Guru 70090 points

    Hello Andrew,

    Did you try the default demo application from Radar SDK or with any modification?

    And were you able to ping from PC to TDA device or vice versa to make sure the network is reachable from either end?

    Regards,

    JG

  • 0 in reply to Jitendra Gupta
    Prodigy 130 points

    Hi Jitendra,

    Thanks for your quick response!

    Yes, I've tried the default demo application both with mmwave studio and with the mmwavelink example program. Both worked as expected. Also yes, I'm able to ping the TDA device. Lastly, as I mentioned in my first message, the TDA device responds appropriately to the RADAR_NW_LINK_TFDTP_INIT command sent by the radar_cascade_demo.m script, the TDA device then starts sending UDP packets to the host PC which I can see in a wireshark session running on the host machine.

    It seems the PC and TDA device are able to communicate without problems, so I think the problem lies elsewhere. What would be the next step in troubleshooting?

    Thanks again!