mikroe_radar_mm5d91_00

MM5D91-00 - Radar Click (Mikroe)

Summary

This project shows the implementation of Radar-sensor driver using MM5D91-00 with EFR32xG24 Explorer Kit based on UART communication.

Radar Click as its foundation uses the MM5D91-00 presence detection sensor module with an integrated mmWave technology from Jorjin Technologies Inc. It is capable of counting the number of people who passed an entrance or entered a room. It simplifies the implementation of mmWave sensors in the band of 61.0 to 61.5 GHz range. The board includes an ARM Cortex-M4F-based processor system with 1Tx 3Rx antenna and an onboard regulator. The device is beneficial for various presence sensing applications, ranging from offices and homes to commercial buildings and infrastructures.

Required Hardware

• EFR32xG24 Explorer Kit (BRD2703A-EFR32xG24 Explorer Kit Board)

• Radar Click board based on MM5D91-00 sensors.

Hardware Connection

The Radar Click board can just be "clicked" into its place. Be sure that the board's 45-degree corner matches the Explorer Kit's 45-degree white line.

Setup

You can either create a project based on an example project or start with an empty example project.

Create a project based on an example project

1. From the Launcher Home, add the BRD2703A to My Products, click on it, and click on the EXAMPLE PROJECTS & DEMOS tab. Find the example project with filter "MM5D91-00".

2. Click Create button on the Third Party Hardware Drivers - MM5D91-00 - Radar Click (Mikroe) example. Example project creation dialog pops up -> click Create and Finish and Project should be generated.

3. Build and flash this example to the board.

Start with an empty example project

1. Create an "Empty C Project" for the "EFR32xG24 Explorer Kit Board" using Simplicity Studio v5. Use the default project settings.

2. Copy the file app/example/mikroe_radar_mm5d91_00/app.c into the project root folder (overwriting the existing file).

3. Install the software components:

   • Open the .slcp file in the project.

   • Select the SOFTWARE COMPONENTS tab.

   • Install the following components:

     • [Services] → [IO Stream] → [IO Stream: EUSART] → default instance name: vcom
     • [Services] → [IO Stream] → [IO Stream: USART] → default instance name: mikroe
     • [Application] → [Utility] → [Log]
     • [Third Party Hardware Drivers] → [Sensors] → [MM5D91-00 - Radar Click (Mikroe)] → use default configuration

4. Enable printf float support

   • Open Properties of the project.

   • Select C/C++ Build > Settings > Tool Settings > GNU ARM C Linker > General > Check "Printf float".

     

5. Build and flash this example to the board.

Note:

• Make sure that the SDK extension already be installed. If not please follow this documentation.

• SDK Extension must be enabled for the project to install "MM5D91-00 - Radar Click (Mikroe)" component.

How It Works

The application waits for the detection event and then displays on the USB UART the distance of detected object, accuracy, elapsed time since last reset, and the module's internal temperature. You can launch Console that's integrated into Simplicity Studio or use a third-party terminal tool like PuTTY to receive the data from the Serial port. A screenshot of the console output is shown in the figure below.

Report Bugs & Get Support

To report bugs in the Application Examples projects, please create a new "Issue" in the "Issues" section of third_party_hw_drivers_extension repo. Please reference the board, project, and source files associated with the bug, and reference line numbers. If you are proposing a fix, also include information on the proposed fix. Since these examples are provided as-is, there is no guarantee that these examples will be updated to fix these issues.

Questions and comments related to these examples should be made by creating a new "Issue" in the "Issues" section of third_party_hw_drivers_extension repo.