Other Parts Discussed in Thread: DCA1000EVM, IWR1642
Currently, we are using IWR1642BOOST+DCA1000EVM to capture raw data with custom applications.
For DCA1000EVM, we are using the DCA CLI program provided in C:\ti\mmwave_studio_02_01_00_00\mmWaveStudio\ReferenceCode\DCA1000\ to record raw data.
For IWR1642BOOST, we flashed mmWave Demo image provided in C:\ti\mmwave_sdk_03_03_00_03\packages\ti\demo\xwr16xx\mmw into the sensor board and set the board to SOP-4 mode before power-cycle (reboot). We then successively send configuration commands to IWR1642 by COM port. The sample configuration file can be found at C:\ti\mmwave_sdk_03_03_00_03\packages\ti\demo\xwr16xx\mmw\profiles, but we customized the configuration by our needs.
We use both the above method and mmwave studio to capture raw data to measure the distance of objects. We perform FFT on the collected raw data, and the results are below. The first figure is obtained by above method and the second figure is obtained by mmwave studio. Through the FFT result by mmwave studio, we could calculate the correct distance of the target. But through the FFT results by above method, we could not calculate the correct result. We find that the FFT result is reserved in the first figure. If I reserve the order of the FFT results, I would gain the right result. Is it some different part between different data capture method? Or may I make some mistakes in the configuration file? Thank you!
The below provides the configuration file we used for IWR1642 configuration:
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
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 1 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 77 10 6 47 0 0 85.069 0 256 6250 0 0 30 %* <startIdx> <endIdx> <profID> % <startFreqVar>[0] <freqSlopeVar>[0] <idleTimeVar>[0] % <AdcStartTimeVar>[0] <txEnableMask> chirpCfg 0 0 0 0 0 0 0 1 %* <startIdx> <endIdx> % <loopNum>[should be 4x] <frameNum> <framePerio:ms> % <trigSel 1:Software,2:Hardware>[1] <frameTrigDelay:ms> frameCfg 0 0 160 0 50 1 0 %* <Ignored>[0] <AdcMode 0:Regular,1:LP Mode> lowPower 0 1 % <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 0 % Must be two lines cfarCfg -1 0 2 8 4 3 0 15 1 cfarCfg -1 1 0 4 2 3 1 15 1 % <> <enabled>[0] ... multiObjBeamForming -1 0 0.5 % <> <enabled>[0] clutterRemoval -1 0 % <> <enabled>[0] ... calibDcRangeSig -1 0 -5 8 256 % <> <enabled>[0] extendedMaxVelocity -1 0 % <> <enabled>[0] ... 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 2Tx*4Rx> compRangeBiasAndRxChanPhase 0.0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 % <disable compRangeBiasAndRxChanPhase>[0] ... measureRangeBiasAndRxChanPhase 0 1.5 0.2 CQRxSatMonitor 0 3 5 121 0 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 sensorStart |
