[参考译文] IWR6843AOPEVM：IWR6843AOPEVM：将 profile.cfg 文件中 frameCfg 下的 loopNum 参数设置为1会导致无法收集数据、且只能在设置为16时正常工作！

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1406402/iwr6843aopevm-the-iwr6843aopevm-setting-the-loopnum-parameter-under-framecfg-in-the-profile-cfg-file-to-1-results-in-inability-to-collect-data-and-it-can-only-work-when-set-to-16

工具与软件：

工作环境：IWR6843AOPEMV + MMWAVEICBOOST + DCA1000EVM + Windows 10

目标：通过 Python 脚本控制 DCA1000EVM、以使用 CLI 命令操作 IWR6843AOPEMV 毫米波雷达来进行数据采集。

文件：两个配置文件、 cf.json 和 profile.cfg、如下所示：

{
  "DCA1000Config": {
    "dataLoggingMode": "raw",
    "dataTransferMode": "LVDSCapture",
    "dataCaptureMode": "ethernetStream",
    "lvdsMode": 2,
    "dataFormatMode": 3,
    "packetDelay_us": 25,
    "ethernetConfig": {
      "DCA1000IPAddress": "192.168.33.180",
      "DCA1000ConfigPort": 4096,
      "DCA1000DataPort": 4098
    },
    "ethernetConfigUpdate": {
      "systemIPAddress": "192.168.33.30",
      "DCA1000IPAddress": "192.168.33.180",
      "DCA1000MACAddress": "12.34.56.78.90.12",
      "DCA1000ConfigPort": 4096,
      "DCA1000DataPort": 4098
    },
    "captureConfig": {
      "fileBasePath": "data",
      "filePrefix": "adc_data",
      "maxRecFileSize_MB": 1024,
      "sequenceNumberEnable": 1,
      "captureStopMode": "infinite",
      "bytesToCapture": 4000,
      "durationToCapture_ms": 180000,
      "framesToCapture": 12000
    },
    "dataFormatConfig": {
      "MSBToggle": 0,
      "laneFmtMap": 0,
      "reorderEnable": 1,
      "dataPortConfig": [
        {
          "portIdx": 0,
          "dataType": "complex"
        },
        {
          "portIdx": 1,
          "dataType": "complex"
        },
        {
          "portIdx": 2,
          "dataType": "complex"
        },
        {
          "portIdx": 3,
          "dataType": "complex"
        },
        {
          "portIdx": 4,
          "dataType": "complex"
        }
      ]
    }
  }
}

 profile.cfg 用于控制 IWR6843AOPEMV 的内容：

% ***************************************************************
% Created for SDK ver:03.06
% Created using Visualizer ver:3.6.0.0
% Frequency:60
% Platform:xWR68xx_AOP
% ***************************************************************
sensorStop
flushCfg

% 1:frame based chirps, 2:continuous chirp, 3:adv frame config [1/3]
dfeDataOutputMode 1

%* <rxChanEn><TxChanEn><0(cascading)>[15][x][0]
channelCfg 15 7 0

%* <numADCBits 0:12bit,1:14bit,2:16bit>[2]
% <adcOutputFmt 0:real,1:complex1,2:complex2>[1/2]
adcCfg 2 1

%* <subFrameIdx>[-1]
% <adcOutFmt 0:Complex,1:Real>[0]
% <sampleSwap 0:I in LSB Q in MSB,1 otherwise>[1]
% <ChanInterleave 0:Interleaved,1:NonItl>[1]
% <ChirpThreshold..MUST be 1 for LVDS>[1]
adcbufCfg -1 0 1 1 1

% ===========================================================================

%* <profID> <startFreq:GHz> <ideleTime:us> <adcStartTime:us>
% <rampEndTime:us> <txOutPower>[0] <txPhaseShift>[0]
% <freqSlopeConst:MHz/us> <txStartTime:us> <numAdcSample>
% <digOutSampleRate:ksps>
% <hpfCornerFreq1 0:175KHz,1:235,2:350,3:700>
% <hpfCornerFreq2 0:350KHz,1:700,2:1400,3:2800>
% <rxGain>
profileCfg 0 60 7 6 60 0 0 64.985 1 256 5000 0 0 48

%* <startIdx> <endIdx> <profID>
% <startFreqVar>[0] <freqSlopeVar>[0] <idleTimeVar>[0]
% <AdcStartTimeVar>[0] <txEnableMask>
chirpCfg 0 0 0 0 0 0 0 1
chirpCfg 1 1 0 0 0 0 0 2
chirpCfg 2 2 0 0 0 0 0 4

%* <startIdx> <endIdx>
% <loopNum> <frameNum> <framePerio:ms>
% <trigSel 1:Software,2:Hardware>[1] <frameTrigDelay:ms>
frameCfg 0 2 16 12000 5 1 0

% ===========================================================================

%* <Ignored>[0] <AdcMode 0:Regular,1:LP Mode>
lowPower 0 0

% <subFrameIdx For Demo Visualizer,streamed on UART not LVDS>[-1]
% <detectedObj 0:disable,1:enable Point Cloud&side info,2:enable PC>
% <logMagRange 0:disable,1:enable>
% <noiseProf 0:disable,1:enable>[0]
% <rangeAziHeatmap 0,1>[0]
% <rangeDFSHeatmap 0,1>[0]
% <stasInfo 0,1>[0]
guiMonitor -1 1 1 0 0 0 1

% Must be two lines
% <subFrameIdx> <procDirection> <mode> <noiseWin>
% <guardLen> <divShift> <cyclic mode or Wrapped around mode> <Threshold scale> <Peak grouping>
cfarCfg -1 0 2 8 4 3 0 15.0 1
cfarCfg -1 1 0 4 2 3 1 15.0 1

% <subFrameIdx> <Feature Enabled> <threshold>[0]
multiObjBeamForming -1 1 0.5

% <subFrameIdx> <Enable static clutter removal technique>[0]
clutterRemoval -1 0

% <subFrameIdx> <Enable DC removal using first few chirps>[0] 
% <negativeBinIdx> <positiveBinIdx> <numAvg>
calibDcRangeSig -1 0 -5 8 256

% <subFrameIdx> <Enable velocity disambiguation technique>[0]
extendedMaxVelocity -1 0

% <subFrameIdx> <enabled>[0] <chirp0Idx> <chirp1Idx>
% bpmCfg -1 0 0 1

%* <subFramIdx>[-1] <enableHeader 0,1>[0]
% <dataFmt 0:HW disable,1:ADC,2:CP_ADC_CQ>[1] <enableSW 0,1>[0]
lvdsStreamCfg -1 0 1 0

% <rangeBias> <I/Q Bias compen for 3Tx*4Rx>
compRangeBiasAndRxChanPhase 0.0 1 0 -1 0 1 0 -1 0 1 0 -1 0 1 0 -1 0 1 0 -1 0 1 0 -1 0

% <disable compRangeBiasAndRxChanPhase>[0] <targetDistance> <searchWin>
measureRangeBiasAndRxChanPhase 0 1.5 0.2

% <profile> <satMonSel> <priSliceDuration> <numSlices> <rxChanMask>
CQRxSatMonitor 0 3 5 121 0

% <profile> <numSlices> <numSamplePerSlice>
CQSigImgMonitor 0 127 4

% <disable CQRxSatMonitor 0,1>[0] <disable CQSigImgMonitor 0,1>[0]
analogMonitor 0 0

% <subFrameIdx>[-1] <minAzimuthDeg> <maxAzimuthDeg>
% <minElevationDeg> <maxElevationDeg>
aoaFovCfg -1 -90 90 -90 90

% <subFrameIdx>[-1] <0:range,1:Doppler>
% <min> <max>
cfarFovCfg -1 0 0 8.92
cfarFovCfg -1 1 -1 1.00

% <save enable> <restore enable> <Flash offset>
calibData 0 0 0

sensorStart

问题：

在该 profile.cfg 文件中、我 frameCfg 按如下方式设置了参数：

frameCfg 0 2 16 12000 5 1 0

当 loopNum 设置为16时、可以启动毫米波雷达来收集数据。 但是、当我设置 loopNum 为1时、将无法使用以下配置收集任何数据：

frameCfg 0 2 1 12000 5 1 0

然而,在 Wmare Studio 中,我可以将"线性调频脉冲循环数"设置为1 ,这对应于 loopNum 中 frameCfg。 在 Wmare Studio 中,我可以成功获取数据,但在使用 Python 脚本控制的 CLI 命令时,我无法收集数据。

是否存在配置不正确的参数？ 或者不支持设置 loopNum 为1吗？