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The demo project runs on the AVR Curiosity Nano with the Bosch BMI160 (Mikroe IMU2 click board) or TDK ICM42688 (Mikroe IMU14 click board) sensors.
- MPLAB® X IDE (>=5.45 Recommended) (microchip.com/mplab/mplab-x-ide)
- MPLAB® XC8 (>=2.32 Recommended) (microchip.com/mplab/compilers)
- MPLAB® Code Configurator (MCC) (>=5.1.0 Recommended) (microchip.com/mplab/mplab-code-configurator)
- MPLAB® Code Configurator (MCC) Device Libraries AVR MCUs (microchip.com/mplab/mplab-code-configurator)
- Microchip AVR-Dx Series Device Support (1.9.119 Recommended) (packs.download.microchip.com)
- AVR128DA48 Curiosity Nano Evaluation Kit (DM164151)
- Curiosity Nano Base for Click boards™ (AC164162)
- IMU 2 click board (mikroe.com/6dof-imu-2-click)
- IMU 14 click board (mikroe.com/6dof-imu-14-click)
To build data logging firmware for different sensor configurations, visit the ml-avrda-cnano-imu-data-logger repository.
The sensor configuration used in this demo is summarized in the table below. These settings can be changed by modifying app_config.h.
| IMU Sensor | Axes | Sampling Rate | Accelerometer Range | Gyrometer Range |
|---|---|---|---|---|
| Bosch BMI160 | Ax, Ay, Az, Gx, Gy, Gz | 100Hz | 2G | 125DPS |
The firmware will reflect the state of operation of the demo using the onboard LEDs; this behavior is summarized in the table below.
In addition, the firmware also prints the classification output for each inference over the UART port. To read the UART port output, use a terminal emulator of your choice (e.g., PuTTY) with the following settings:
- Baudrate 115200
- Data bits 8
- Stop bits 1
- Parity None
The terminal output should look similar to the figure shown below.
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|---|
| UART Terminal Output |
Measured with the BMI160 sensor configuration, -O2 level compiler optimizations, and 4MHz clock
- 30kB Flash
- 2.6kB RAM
- 24ms Inference time (average)
This example includes a knowledge pack that will generate a test pattern 1,2,3,3,2,1..