mikroe_accel5_bma400

BMA400 - Accel 5 Click (Mikroe)

Summary

This project aims to show the hardware driver that is used to interface with the BMA400 Sensor via APIs of GSDK. This driver is based on BMA400 Sensor API from Bosch Sensortec.

The BMA400 is the first real ultra-low power acceleration sensor that minimizes power consumption without compromising performance.

With its ultra-low power consumption, onboard data processing, output data lowpass filtering, and ability to detect many different events, the BMA400 is a perfect solution for IoT applications. It can also be used to develop applications for wearables, smart home applications, drop detection for warranty logging, power management based on motion, and similar.

Required Hardware

• A BGM220P Explorer Kit board
• Or SiWx917 Wi-Fi 6 and Bluetooth LE 8 MB Flash SoC Pro Kit (BRD4002 + BRD4338A)
• A MikroE Accel 5 Click board

Hardware Connection

• If the BGM220 Bluetooth Module Explorer Kit is used:

  The Accel 5 Click board supports MikroBus; therefore, it can connect easily to the MikroBus header of the BGM220P Explorer Kit. Be sure that the 45-degree corner of the board matches the 45-degree white line of the Explorer Kit. The hardware connection is shown in the image below:

  

• If the SiWx917 Wi-Fi 6 and Bluetooth LE 8 MB Flash SoC Pro Kit is used:

  The hardware connection is shown in the table below:

  If I2C interface is used:

  Description	BRD4338A GPIO	BRD4002 EXP Header	Accel 5 Click Board
  I2C_SDA	ULP_GPIO_6	EXP_16	SDA
  I2C_SCL	ULP_GPIO_7	EXP_15	SCL
  BMA400_INT1	GPIO_46	P24	IT2
  BMA400_INT2	GPIO_47	P26	IT1

  If SPI interface is used:

  Description	BRD4338A GPIO	BRD4002 Breakout Pad	Accel 5 Click Board
  BMA400_INT1	GPIO_46	P24	IT2
  BMA400_INT2	GPIO_47	P26	IT1
  RTE_GSPI_MASTER_CLK_PIN	GPIO_25	P25	SCK
  RTE_GSPI_MASTER_MISO_PIN	GPIO_26	P27	SDO
  RTE_GSPI_MASTER_MOSI_PIN	GPIO_27	P29	SDI
  RTE_GSPI_MASTER_CS0_PIN	GPIO_28	P31	CS

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 your board to My Products, click on it, and click on the EXAMPLE PROJECTS & DEMOS tab. Find the example project filtering by "bma400".

2. Click Create button on the project:

   • Third Party Hardware Drivers - BMA400 - Accelerometer Sensor (Mikroe) - I2C if using the I2C interface.

   • Third Party Hardware Drivers - BMA400 - Accelerometer Sensor (Mikroe) - SPI if using the SPI interface.

     

   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 your board using Simplicity Studio v5. Use the default project settings.

2. Copy the file app/example/mikroe_accelerometer_bma400/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:

     If the BGM220P Explorer Kit is used:

     • [Platform] → [Driver] → [GPIOINT]
     • [Services] → [IO Stream] → [IO Stream: EUSART] → default instance name: vcom
     • [Application] → [Utility] → [Log]
     • If using the I2C interface: [Third Party Hardware Drivers] → [Sensors] → [BMA400 - Accel 5 Click (Mikroe) - I2C] → use default configuration
     • If using the SPI interface: [Third Party Hardware Drivers] → [Sensors] → [BMA400 - Accel 5 Click (Mikroe) - SPI] → use the default configuration

     If the SiWx917 Wi-Fi 6 and Bluetooth LE 8 MB Flash SoC Pro Kit is used:

     • If using the I2C interface: [WiSeConnect 3 SDK] → [Device] → [Si91x] → [MCU] → [Peripheral] → [I2C] → [i2c2]
     • If using the I2C interface: [Third Party Hardware Drivers] → [Sensors] → [BMA400 - Accel 5 Click (Mikroe) - I2C] → use default configuration
     • If using the SPI interface: [Third Party Hardware Drivers] → [Sensors] → [BMA400 - Accel 5 Click (Mikroe) - SPI] → use the default configuration

4. Install "Printf float"

   • 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 Third Party Hardware Drivers extension is installed. If not, follow this documentation.

How It Works

You can choose the mode of operation by selecting the corresponding macro MIKROE_BMA400_READ_MODE_INTERRUPT or MIKROE_BMA400_READ_MODE_POLLING is defined in "app.c".

The application reads the accelerometer XYZ data and converts them to Gravity data in m/s^2. You can launch Console that's integrated into Simplicity Studio or use a third-party terminal tool like Tera Term to receive the data from the USB. 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.