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MMWAVE SDK User Guide

3. 3. 2. mmWave demo with LVDS-based instrumentation

To enable mmW demo in the instrumentation usecase where high bandwidth data is shipped from the device to a PC over ethernet and saved onto

the filesystem, please follow the following steps

Power on the EVM in functional mode with right binary loaded (see above) and connect it to the PC as shown above with the USB section

cable. Connect mmWave EVM to DCA1000 EVM by following User's Guide. Place SW2.5 in DCA1000EVM Data Capture Card

CONFIG_VIA_SW mode to be able to use the remainder of the instructions specified here.

Browse to the TI gallery app "mmWave Demo Visualizer" at or use the direct link http://dev.ti.com/gallery https://dev.ti.com

. /mmWaveDemoVisualizer

Default profile in Visualizer disables the LVDS streaming. To enable it, please export the chosen profile and set the appropriate enable bits in

lvdsStreamCfg command. See " " section for details on the command format, usage and dependencies.Configuration (.cfg) File Format

Example: Enable H/W and S/W stream with header

lvdsStreamCfg -1 1 1 1

Create a JSON file with any name but with extension .json with following parameters. See section "JSON Config File"

in TI_DCA1000EVM_CLI_Software_UserGuide.pdf. Sample JSON file is shown below.

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MMWAVE SDK User Guide

datacard_config.json

{

"DCA1000Config": {

"dataLoggingMode": "multi",

"dataTransferMode": "LVDSCapture",

"dataCaptureMode": "ethernetStream",

"lvdsMode": 2,

"dataFormatMode": 3,

"packetDelay_us": 10,

"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": "C:\\mySavedData",

"filePrefix": "datacard_record",

"maxRecFileSize_MB": 1024,

"sequenceNumberEnable": 1,

"captureStopMode": "infinite",

"bytesToCapture": 1025,

"durationToCapture_ms": 1000,

"framesToCapture": 5

"dataFormatConfig": {

"MSBToggle": 0,

"reorderEnable": 1,

"laneFmtMap": 0,

"dataPortConfig": [

{

"portIdx": 0,

"dataType": "complex"

{

"portIdx": 1,

"dataType": "complex"

{

"portIdx": 2,

"dataType": "complex"

{

"portIdx": 3,

"dataType": "complex"

{

"portIdx": 4,

"dataType": "complex"

}

]

}

This json file should match user's setup and the profile.cfg that is used to configure the mmW demo running on mmWave EVM.

User should customize "ethernetConfig" block to match their setup

"dataLoggingMode" in json file should be set to "raw" if header is disabled via <enableHeader> field in lvdsStreamCfg command in

profile.cfg. "dataLoggingMode" in json file should be set to "multi" if header is enabled via <enableHeader> field in lvdsStreamCfg co

.mmand in profile.cfg

"lvdsMode" in json file should be set to 2 since xwr16xx/xwr18xx/xwr68xx device have 2 lvds lanes.

"dataFormatMode" in json file should match the 12/14/16 bit selection in <numADCBits> field in "adcCfg" command in profile.cfg. As

one would realize, value of "dataFormatMode" is ("adcCfg""numADCBits" + 1) .

User should customize "captureConfig" as per their needs.

"MSBToggle" should be set to 0.

"reorderEnable" should be set to 1.

"dataPortConfig" should set all dataType to "complex" since mmW demo configures all CBUFF/LVDS session to be complex.

http://www.ti.com

MMWAVE SDK User Guide

Assuming the file created in previous step is called "datacard_config.json", invoke the following commands from a command prompt (DOS or

bash) on the PC to which the DCA1000 EVM is connected:

Windows:

Windows::DCA1000EVM CLI Commands

@REM configure DCA1000EVM

DCA1000EVM_CLI_Control.exe fpga datacard_config.json

@REM configure CLI application with the record related settings

DCA1000EVM_CLI_Control.exe record datacard_config.json

@REM start record and wait for the data over ethernet

DCA1000EVM_CLI_Control.exe start_record datacard_config.json

Linux:

Linux::DCA1000EVM CLI Commands

# configure DCA1000EVM

./DCA1000EVM_CLI_Control fpga datacard_config.json

#configure CLI application with the record related settings

./DCA1000EVM_CLI_Control record datacard_config.json

#start record and wait for the data over ethernet

./DCA1000EVM_CLI_Control start_record datacard_config.json

See for details on operating the Visualizer. Configure the mmW demo running on the mmWave EVM using the Visualizer previous section

and profile.cfg that has lvds streaming turned on. To avoid getting timeout error from DCA1000EVM_CLI_Control, execute this step from the

Visualizer within 30 secs of sending the "start_record" command using DCA1000EVM_CLI_Control.

With successful invocation of DCA1000EVM_CLI_Control and Visualizer, the mmWave EVM will send UART stream to get plotted on the

Visualizer and LVDS stream to PC to be saved in a file as configured in "captureConfig" JSON block.

Use the following command to stop the LVDS stream capture before issuing "sensorStop" to the mmW demo running on mmWave EVM. One

could send the sensorStop to mmWave EVM followed by stop_record to DCA1000EVM_CLI_Control.exe however this would generate an

errorcode related to record process not running and it can be safely ignored.

Windows:

Windows::Stop DCA1000EVM_CLI

DCA1000EVM_CLI_Control.exe stop_record datacard_config.json

Linux

How to get DCA1000 CLI Utility for Windows

The Windows based CLI (prebuilt binary) can be obtained from mmWave Studio package. Please download and install

mmWave Studio ( ) version 2.1 or later from and browse to MMWAVE-STUDIO http://www.ti.com/tool/MMWAVE-STUDIO

the installed folder: C:\ti\mmwave_studio_<ver>\mmWaveStudio\PostProc.

Documentation and source code for this utility is provided under C:

\ti\mmwave_studio_<ver>\mmWaveStudio\ReferenceCode\DCA1000 for reference.

How to get DCA1000 CLI Utility for Linux

The Linux based CLI sourcecode can be obtained from mmWave Studio package. Please download and install mmWave

Studio ( ) version 2.1 or later from and browse to the MMWAVE-STUDIO http://www.ti.com/tool/MMWAVE-STUDIO

installed folder: C:\ti\mmwave_studio_<ver>\mmWaveStudio\ReferenceCode\DCA1000. Copy the 'SourceCode' folder to

a linux machine and use the instructions from C:

\ti\mmwave_studio_<ver>\mmWaveStudio\ReferenceCode\DCA1000\Docs\TI_DCA1000EVM_CLI_Software_UserGuide.

pdf to build the utility for your linux distribution.

http://www.ti.com

MMWAVE SDK User Guide

ii.

Linux::Stop DCA1000EVM_CLI

./DCA1000EVM_CLI_Control stop_record datacard_config.json

See section "Output Files" in C:

\ti\mmwave_studio_<ver>\mmWaveStudio\\ReferenceCode\DCA1000\Docs\TI_DCA1000EVM_CLI_Software_UserGuide.pdf to understand

the files saved during this transfer. On little endian PCs, <File_Prefix>_<Raw/Header Mode>_<iteration>.bin contains value in little endian

format. A fread of 16 bit on little endian PCs will read correct data with no more formatting required. For the high-level data format details

corresponding to the H/W session data format configurations, refer to the corresponding slides in mmwave_sdk_<ver>\docs\ti\drivers\cbuff\do

. See section "Streaming data over LVDS" in mmW demo doxygen (browse via cs\CBUFF_Transfers.pptx mmwave_sdk_<ver>\docs\mmwav

) for details on data format of the streamed data.e_sdk_module_documentation.html

For the "raw" mode, the data filename would be <File_Prefix>_Raw_<iteration>.bin. Raw mode is only supported for H/W session

and the saved data is directly payload with no header or extra bytes/padding.

For the "multi" mode (or the header enabled mode), see HSIHeader structure returned by HSIHeader_createHeader create API in

mmW demo for the header IDs used.

By default, for mmW demo, the first enabled stream (i.e. for H/W stream if H/W is enabled or for S/W stream if H/W is

enabled) will have the ID: HSI_HEADER_ID1 : 0x0CDA0ADC0CDA0ADCU and hence the filename would

be <File_Prefix>_hdr_0ADC_<iteration>.bin. See below for one such example file content and its interpretation.

By default, for mmW demo, the second enabled stream (i.e. for S/W stream if H/W is also enabled) will have the

ID: HSI_HEADER_ID2 : 0x09CC0CC909CC0CC9U and hence the filename would be <File_Prefix>_hdr_0CC9_<iteration>.

bin. See below for one such example file content and its interpretation.

Sample datacard_record_hdr_0ADC_0.bin for H/W session with CP_ADC_CQ format

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