Mikroelektronika d.o.o.
Accel 15 Click Board
Accel 15 Click Board
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Key Features
- Ultra-low power consumption, high performance, programmable functionality, on-chip interrupt features, adjustable bandwidth, optimized for industrial applications, and more
- Based on the BMA490L - high-performance 16-bit digital triaxial longevity acceleration sensor with extended availability of up to ten years from Bosch Sensortech
- Can be used for home appliances, power tools, and other industrial products whose lifetime is essential.
- mikroBUS: I2C and SPI Interfaces
Overview
The Accel 15 Click Board™ is a compact add-on board that contains a longevity acceleration sensor. This board features the BMA490L, a high-performance 16-bit digital triaxial acceleration sensor with extended availability of up to ten years from Bosch Sensortech. It allows selectable full-scale acceleration measurements in ranges of ±2g, ±4g, ±8g, and ±16g in three axes with a configurable host interface that supports both I2C and SPI serial communication and with intelligent on-chip motion-triggered interrupt features. Intelligent signal processing and evaluation in the accelerometer ASIC enables advanced gesture recognition for numerous industrial IoT applications where low power consumption is vital. This Click Board™ is suitable for home appliances, power tools, and other industrial products whose lifetime is essential.
The Accel 15 Click is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click Board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket.
How Does the Accel 15 Click Board™ Work?
The Accel 15 Click Board™ as its foundation uses the BMA490L, a high-performance 16-bit digital triaxial longevity acceleration sensor with extended availability of up to ten years from Bosch Sensortech. The BMA490L is highly configurable with a programmable acceleration range of ±2/±4/±8/±16g, and intelligent on-chip motion-triggered interrupt features (any/no motion) optimized for industrial applications, routed to the INT and AN pins of the mikroBUS™ socket. In addition to all these features, it also has excellent temperature stability (low-temperature drift), low noise, and low offset.
The sensor features a high-performance measurement mode with low pass filters and current consumption of 150μA in Full-Operation Mode, making it robust to temperature fluctuations with a maximum output data rate of 1.6 kHz. In Low-Power Mode, the current consumption is reduced to 14 µA, meeting the current consumption requirements of Always-On applications.
Accel 15 Click provides the possibility of using both I2C and SPI interfaces with a maximum frequency of 1MHz for I2C and 10MHz for SPI communication. The selection can be made by positioning SMD jumpers labelled as COMM SEL to an appropriate position. Note that all the jumpers' positions must be on the same side, or else the Click board™ may become unresponsive. While the I2C interface is selected, the BMA490L allows the choice of the least significant bit (LSB) of its I2C slave address using the SMD jumper labelled as ADDR SEL.
This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before use with MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
| Type | Motion |
| Applications | Can be used for home appliances, power tools, and other industrial products whose lifetime is essential. |
| On-board modules | BMA490L - high-performance 16-bit digital triaxial longevity acceleration sensor with extended availability of up to ten years from Bosch Sensortech |
| Key Features | Ultra-low power consumption, high performance, programmable functionality, on-chip interrupt features, adjustable bandwidth, optimized for industrial applications, and more |
| Interface | I2C,SPI |
| Compatibility | mikroBUS |
| Click board size | S (28.6 x 25.4 mm) |
| Input Voltage | 3.3V |
PINOUT DIAGRAM
This table shows how the pinout on Accel 15 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| Interrupt 2 | I2 | 1 | AN | PWM | 16 | NC | |
| NC | 2 | RST | INT | 15 | INT | Interrupt 1 | |
| SPI Chip Select | CS | 3 | CS | RX | 14 | NC | |
| SPI Clock | SCK | 4 | SCK | TX | 13 | NC | |
| SPI Data OUT | SDO | 5 | MISO | SCL | 12 | SCL | I2C Clock |
| SPI Data IN | SDI | 6 | MOSI | SDA | 11 | SDA | I2C Data |
| Power Supply | 3.3V | 7 | 3.3V | 5V | 10 | NC | |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| JP1 | ADDR SEL | Right | I2C Address Selection 0/1: Left position 0, Right position 1 |
| JP2-JP5 | COMM SEL | Right | Communication Interface Selection SPI/I2C: Left position SPI, Right position I2C |
ACCEL 15 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | - | 3.3 | - | V |
| Acceleration Range | ±2 | ±16 | g | |
| Sensitivity | 16384 | - | 2048 | LSB/g |
| Bandwidth | 0.75 | - | 800 | Hz |
| Output Data Rate | 12.5 | - | 1600 | Hz |
| Operating Temperature Range | -40 | +25 | +85 | °C |
Software Support
We provide a library for the Accel 15 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on the mikroE GitHub account.
Library Description
This library contains an API for the Accel 15 Click Board™ driver.
Key Functions
accel15_cfg_setup- Config Object Initialization functionaccel15_init- Initialization function.accel15_default_cfg- Click the Default Configuration function.
Example Description
This library contains an API for the Accel 15 Click Board™ driver. The library initializes and defines the I2C or SPI bus drivers to write and read data from registers. The library also includes a function for reading X-axis, Y-axis, and Z-axis data.
The application is composed of three sections :
void application_task ( void ) {
if ( accel15_get_int_1( &accel15 ) == ACCEL15_DRDY ) {
accel15_get_axis_data( &accel15, &axis );
log_printf( &logger, "tX : %5d rn", axis.x );
log_printf( &logger, "tY : %5d rn", axis.y );
log_printf( &logger, "tZ : %5d rn", axis.z );
log_printf( &logger, "-------------------------rn" );
Delay_ms( 1000 );
}
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on mikroE GitHub account.
Other mikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Accel15
Additional Notes and Information
Depending on the development board you are using, you may need a USB UART click, USB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.
mikroSDK
the Accel 15 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
Software Support
We provide a library for the Accel 15 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on the mikroE GitHub account.
Library Description
This library contains an API for the Accel 15 Click Board™ driver.
Key Functions
accel15_cfg_setup- Config Object Initialization functionaccel15_init- Initialization function.accel15_default_cfg- Click the Default Configuration function.
Example Description
This library contains an API for the Accel 15 Click Board™ driver. The library initializes and defines the I2C or SPI bus drivers to write and read data from registers. The library also includes a function for reading X-axis, Y-axis, and Z-axis data.
The application is composed of three sections :
void application_task ( void ) {
if ( accel15_get_int_1( &accel15 ) == ACCEL15_DRDY ) {
accel15_get_axis_data( &accel15, &axis );
log_printf( &logger, "tX : %5d rn", axis.x );
log_printf( &logger, "tY : %5d rn", axis.y );
log_printf( &logger, "tZ : %5d rn", axis.z );
log_printf( &logger, "-------------------------rn" );
Delay_ms( 1000 );
}
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on mikroE GitHub account.
Other mikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Accel15
Additional Notes and Information
Depending on the development board you are using, you may need a USB UART click, USB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.
mikroSDK
the Accel 15 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
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