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AWR2944: Does the DDMA mode support advance frame configuration?

Nancy Wang
Expert 8210 points
Part Number: AWR2944

Hi,

When using the AWR2944 chip, customer wants to use dual-wavelength alternating transmission in DDMA mode to expand the speed. After checking the relevant TI documents, he saw that there is an advanceframe mode that can realize this transmission mode.

After the configuration is complete, it is found that the code runs to the MmwDemo_configPhaseShifterChirps function module and it will judge that if the dfeDataOutputMode is MMWave_DFEDataOutputMode_ADVANCED_FRAME, it will run to CLI_write("Advanced Subframe Config is not currently supported with the DDMA chain\n"). Therefore, I would like to ask whether the AWR2944 chip actually supports the use of advance frame configuration in DDMA mode. If so, where should I modify to achieve this function?

  • 0
    Prodigy 91 points

    Hi，Nancy，i face the same problem as you and i receive the response that in SDK4.4 can support advance frame。By reading the program in SDK4.4 and modify the  MmwDemo_configPhaseShifterChirps refer to SDK4.4 ,i find my program  can work properly ，but the output point cloud has the correct velocity、wrong elevation and  a little bit wrong range。So i guess only modify MmwDemo_configPhaseShifterChirps cannot work correctly ，so I haven't solved that problem yet。

  • 0
    TI__Mastermind 26485 points

    Hi,

    We are checking on this with the team internally. Kindly allow us some time to revert back on this.

    Thanks,

    Pradipta.

  • 0
    TI__Guru 69140 points

    Hi Nancy,

    AWR2944 device supports of using multiple wavelength within same frame, although I can do lot more complex scheme for your modulation scheme.

    AWR2944 supports max. of 7 profiles using which you can make lot more combination of waveform within single frame or upcoming next frame (AdvFrame, AdvChirp), and in the same way you need to implement processing chain in your SW to process those frame ADC data using DSP/HWA.

    Please refer mmwave_mcuplus_sdk_04_04_00_01/mmwave_dfp_02_04_08_01/docs/mmwave_dfp_user_guide.pdf (section 'mmWave Sensor Advanced Features')

    Now, mmWave SDK is meant to provide quick demo on AWR2944 and current DDMA chain support single type of waveform in a frame (advFrame).

    As SDK provides reference only for a basic but effective use case using DDMA chain, we expect customer to forward and implement algo/SW chain to achieve more complex modulation and processing scheme.

    . 

    Thanks & Regards,

    Jitendra