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

3.1.1 Hardware Setup

The TIDA-010022 design requires the following hardware:

  • One mmWave sensor carrier card platform (MMWAVEICBOOST)
  • One IWR6843 intelligent mmWave sensor standard antenna plug-in module (IWR6843ISK)
  • Two CC1352 LaunchPads (LAUNCHXL-CC1352R1)
  • One 5 V, 2.5 A or greater DC power supply
Note:

Before making any hardware modifications to the IWR6843 boards, flash them by following the steps in Section 3.1.2.

The CC1352 LaunchPad can attach to the MMWAVEICBOOST board after some hardware modifications. Table 3-1 lists the hardware modifications for the MMWAVEICBOOST board.

Table 3-1 MMWAVEICBOOST Hardware Modifications
MODIFICATIONREASON
Remove R91Disconnects RADAR_HOSTINTR1 pin from LaunchPad
Add R81Connects RADAR_MSS_LOGGER pin to LaunchPad
Add R122 and add jumper to J13 pin 2-3Connects 3.3 V rail on MMWAVEICBOOST board to 3.3 V rail on CC1352 LaunchPad
Configure mux as follows:

S1.1 OFF: SPI1 (Default)

S1.1 OFF: SPI1 (Default)

S1.2 ON : 40PIN

S1.3 OFF: 40PIN/J16

S1.4 ON: FTDI/4PIN/J16 (Default)

S1.5 OFF: 40/60PIN/FTDI

S1.6 OFF: 40/60PIN (Default)

S1.7 OFF: 40/60PIN

S1.8 ON: 40PIN

S1.9 OFF: 60PIN

S1.10 ON: FTDI

S1.11 ON: FTDI

S1.12 ON: XDS110 (Default)

Enable 40-pin interface

The components that need to be removed from the MMWAVEICBOOST board are marked by the red squares in Figure 3-1. The components that need to be added are marked in blue squares. No modifications are needed on the IWR6843ISK board.

GUID-96AC4094-67B0-4099-8C9E-3A64EE1FB1AA-low.gif Figure 3-1 MMWAVEICBOOST Front PCB Layout View

Some modifications are needed on the CC1352 LaunchPad that will be used as the sensor node. Remove the following jumpers: "5V", "3V3", "RXD", and "TXD" and switch the XDS110 power jumper to "Extern" Power. Remove the SMA connector for the external antenna (J7 on the schematics) on the CC1352 LaunchPad for it to mate with the MMWAVEICBOOST board (see Figure 3-2).

No hardware modifications are needed on the CC1352 LaunchPad that will be used as the collector node.

GUID-10D5B6B0-5825-4342-8D3F-2DA38AC3E5EE-low.gif Figure 3-2 SMA Connector in CC1352 to be Removed (Sensor Board)

After all hardware modifications are completed, the IWR6843ISK board, MMWAVEICBOOST board, and one of the CC1352 LaunchPads can be assembled together to form the sensor node.

The sensor node (IWR6843 boards + CC1352) can be powered by connecting the 5-V power supply to the MMWAVEICEBOOST board and the collector node can be powered by connecting the USB power supply.

GUID-F08C0BC4-7E3E-4722-9629-58A407CC26D9-low.gifFigure 3-3 Sensor Node (IWR6843 Boards + CC1352) Power Supply
GUID-CECF14C6-9407-4A4F-BD06-FCD937F0406B-low.gifFigure 3-4 Collector Node (CC1352 Only) Power Supply