TIDUED6B august   2018  – april 2023

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   Design Images
  6. 1System Description
    1. 1.1 Key System Specifications
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 mmWave Sensor
        1. 2.2.1.1 mmWave Sensor People Counting
        2. 2.2.1.2 IWR6843 UART Communication
          1. 2.2.1.2.1 IWR6843 Frame Output
          2. 2.2.1.2.2 IWR6843 Frame Header
          3. 2.2.1.2.3 TLV Elements
      2. 2.2.2 Power Supply Design
      3. 2.2.3 Wireless Network Design
      4. 2.2.4 CC1352 Software Design
        1. 2.2.4.1 Collector Node
        2. 2.2.4.2 Sensor Node
        3. 2.2.4.3 mmWave Sensor Configuration Command List Modification
    3. 2.3 Highlighted Products
      1. 2.3.1 IWR6843: Single-Chip 60- to 64-GHz mmWave Sensor
      2. 2.3.2 CC1352R: SimpleLink High-Performance Dual-Band Wireless MCU
      3. 2.3.3 IWR6843ISK and MMWAVEICBOOST: mmWave EVMs
      4. 2.3.4 LAUNCHXL-CC1352R1: SimpleLink™ Multi-Band CC1352R Wireless MCU LaunchPad™ Development Kit
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware Setup
      2. 3.1.2 Software Setup
        1. 3.1.2.1 Loading the CC1352 Firmware
        2. 3.1.2.2 Loading the IWR6843 Firmware
        3. 3.1.2.3 Starting the Firmware
        4. 3.1.2.4 Building the Firmware
        5. 3.1.2.5 Viewing Collector Data Output
        6. 3.1.2.6 Modifying the mmWave Configuration
    2. 3.2 Testing and Results
      1. 3.2.1 Test Setup
        1. 3.2.1.1 People Counting Setup
        2. 3.2.1.2 Power Consumption
        3. 3.2.1.3 Wireless RF Range
      2. 3.2.2 Test Results
        1. 3.2.2.1 People Counting Test Results
        2. 3.2.2.2 Power Characterization
        3. 3.2.2.3 Wireless RF Range Results
  9. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout Recommendations
    4. 4.4 Altium Project
    5. 4.5 Gerber Files
    6. 4.6 Assembly Drawings
  10. 5Software Files
  11. 6Related Documentation
  12. 7Trademarks
  13. 8About the Author
  14. 9Revision History
2.2.1.2.3 TLV Elements

Each TLV has a fixed header (8 bytes) followed by a TLV-specific payload (see Figure 2-6).

GUID-6D639DD0-EC44-4F41-B768-4C60652D1E1F-low.pngFigure 2-6 TLV Header

Three TLVs are supported at this time, as follows:

  • Point Cloud TLV
    • Type = POINT_CLOUD_2D
    • Length = sizeof (tlvHeaderStruct) + sizeof (pointStruct2D) × numberOfPoints
GUID-E1AF3E09-10F4-44CF-B67C-ED202BF697AB-low.pngFigure 2-7 Point Cloud TLV
  • Target List TLV
    • Type = TARGET_LIST
    • – Length = sizeof (tlvHeaderStruct) + sizeof (targetStruct) × numberOfTargets
GUID-B1F2DF96-A8D5-4E2E-BF2C-0228A3764D70-low.png Figure 2-8 Target List TLV
Note:

The target index TLV received in the N-th frame indices the point cloud in (N–1)th frame.

  • Target Index TLV
    • Type = TARGET_INDEX
    • Length = sizeof (tlvHeaderStruct) + numberOfPoints
    • Payload is a byte array, each byte represents a tracking ID
Note:

The track ID is a byte. Values 0 to 249 are supported. Values 250 to 255 are reserved.