30 min

Step into the future of motion sensing with BMA490L and dsPIC33EP512MU810

Seamless motion insight, three axes at a time

Accel 15 Click with EasyPIC Fusion v7

Published Oct 08, 2023

Click board™

Accel 15 Click

Development board

EasyPIC Fusion v7


NECTO Studio



Embark on a journey into the future of motion sensing with our tri-axis brilliance, capturing every dimension of movement with unparalleled precision and responsiveness



Hardware Overview

How does it work?

Accel 15 Click is based on the BMA490L, a high-performance 16-bit digital triaxial longevity acceleration sensor with extended availability of up to ten years from Bosch Sensortec. 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 allows the use of 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 labeled as COMM SEL in an appropriate position. Note that all the jumpers'

positions must be on the same side, or 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 labeled 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 using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Accel 15 Click top side image
Accel 15 Click bottom side image

Features overview

Development board

EasyPIC Fusion v7 is the seventh generation of PIC development boards specially designed to develop embedded applications rapidly. It supports a wide range of 16/32-bit PIC microcontrollers from Microchip and a broad set of unique functions, such as a powerful onboard mikroProg programmer and In-Circuit debugger over USB-B. The development board is well organized and designed so that the end-user has all the necessary elements, such as switches, buttons, indicators, connectors, and others, in one place. With two different connectors for each port, EasyPIC Fusion v7 allows you to connect accessory boards, sensors, and custom electronics more efficiently than ever. Each part of

the EasyPIC Fusion v7 development board contains the components necessary for the most efficient operation of the same board. An integrated mikroProg, a fast USB 2.0 programmer with mikroICD hardware In-Circuit Debugger, offers many valuable programming/debugging options and seamless integration with the Mikroe software environment. Besides it also includes a clean and regulated power supply block for the development board. It can use a wide range of external power sources, including an external 12V power supply, 7-12V AC or 9-15V DC via DC connector/screw terminals, and a power source via the USB Type-B (USB-B) connector. Communication options such

as USB-UART, USB-HOST, CAN, and Ethernet are also included, including the well-established mikroBUS™ standard, one display option for the TFT board line of products, and a standard TQFP socket for the seventh-generation MCU cards. This socket covers a wide range of 16-bit dsPIC/PIC24 and 32-bit PIC32 MCUs. EasyPIC Fusion v7 is an integral part of the Mikroe ecosystem for rapid development. Natively supported by Mikroe software tools, it covers many aspects of prototyping and development thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.

EasyPIC Fusion v7 horizontal image

Microcontroller Overview

MCU Card / MCU



7th Generation



MCU Memory (KB)


Silicon Vendor


Pin count


RAM (Bytes)


Used MCU Pins

mikroBUS™ mapper

Interrupt 2
SPI Chip Select
SPI Clock
Power Supply
Interrupt 1
I2C Clock
I2C Data

Take a closer look


Accel 15 Click Schematic schematic

Step by step

Project assembly

EasyMx PRO v7a for STM32 front image hardware assembly

Start by selecting your development board and Click board™. Begin with the EasyPIC Fusion v7 as your development board.

EasyMx PRO v7a for STM32 front image hardware assembly
Buck 22 Click front image hardware assembly
EasyMx PRO? v7 for STM32 MCUcard with STM32F407VGT6 front image hardware assembly
v7 TQFP 2SOC MB 1 - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
NECTO Compiler Selection Step Image hardware assembly
NECTO Output Selection Step Image hardware assembly
Necto image step 6 hardware assembly
EasyPIC PRO v7a MCU Selection Necto Step hardware assembly
EasyPIC PRO v7a Display Selection Necto Step hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Necto PreFlash Image hardware assembly

Track your results in real time

Application Output

After pressing the "FLASH" button on the left-side panel, it is necessary to open the UART terminal to display the achieved results. By clicking on the Tools icon in the right-hand panel, multiple different functions are displayed, among which is the UART Terminal. Click on the offered "UART Terminal" icon.

UART Application Output Step 1

Once the UART terminal is opened, the window takes on a new form. At the top of the tab are two buttons, one for adjusting the parameters of the UART terminal and the other for connecting the UART terminal. The tab's lower part is reserved for displaying the achieved results. Before connecting, the terminal has a Disconnected status, indicating that the terminal is not yet active. Before connecting, it is necessary to check the set parameters of the UART terminal. Click on the "OPTIONS" button.

UART Application Output Step 2

In the newly opened UART Terminal Options field, we check if the terminal settings are correct, such as the set port and the Baud rate of UART communication. If the data is not displayed properly, it is possible that the Baud rate value is not set correctly and needs to be adjusted to 115200. If all the parameters are set correctly, click on "CONFIGURE".

UART Application Output Step 3

The next step is to click on the "CONNECT" button, after which the terminal status changes from Disconnected to Connected in green, and the data is displayed in the Received data field.

UART Application Output Step 4

Software Support

Library Description

This library contains API for Accel 15 Click driver.

Key functions:

  • accel15_get_axis_data - Accel 15 get accelerometer axis function

  • accel15_generic_write - Accel 15 data writing function

  • accel15_generic_read - Accel 15 data reading function

Open Source

Code example

This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.

 * @file main.c
 * @brief Accel15 Click example
 * # Description
 * This library contains API for Accel 15 Click 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 demo application is composed of two sections :
 * ## Application Init
 * The initialization of I2C or SPI module, log UART, and additional pins. 
 * After the driver init, the app checks communication, 
 * sensor ID, and then executes a default configuration.
 * ## Application Task
 * Measures and displays acceleration data for X-axis, Y-axis, and Z-axis. 
 * Results are being sent to the USART terminal where the user can track their changes. 
 * This task repeats at data output rate which is set to 12.5 Hz.
 * @author Nenad Filipovic

#include "board.h"
#include "log.h"
#include "accel15.h"

static accel15_t accel15;
static log_t logger;
static accel15_axis_t axis;

void application_init ( void ) 
    log_cfg_t log_cfg;          /**< Logger config object. */
    accel15_cfg_t accel15_cfg;  /**< Click config object. */

     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_printf( &logger, "\r\n-------------------------\r\n" );
    log_printf( &logger, "     Application Init    \r\n" );
    log_printf( &logger, "-------------------------\r\n" );

    // Click initialization.
    accel15_cfg_setup( &accel15_cfg );
    ACCEL15_MAP_MIKROBUS( accel15_cfg, MIKROBUS_1 );
    err_t init_flag  = accel15_init( &accel15, &accel15_cfg );
    if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) ) 
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    if ( ACCEL15_ERROR == accel15_check_id( &accel15 ) ) 
        log_printf( &logger, "   Communication ERROR   \r\n" );
        log_printf( &logger, "     Reset the device    \r\n" );
        log_printf( &logger, "-------------------------\r\n" );
        for ( ; ; );
    if ( ACCEL15_ERROR == accel15_default_cfg ( &accel15 ) )
        log_error( &logger, " Default configuration." );
        for ( ; ; );

    log_printf( &logger, "     Application Task    \r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    Delay_ms( 100 );

void application_task ( void ) 
    if ( ACCEL15_DRDY == accel15_get_int_1( &accel15 ) ) 
        if ( ACCEL15_OK == accel15_get_axis_data( &accel15, &axis ) )
            log_printf( &logger, "\tX : %d \r\n", axis.x );
            log_printf( &logger, "\tY : %d \r\n", axis.y );
            log_printf( &logger, "\tZ : %d \r\n", axis.z );
            log_printf( &logger, "-------------------------\r\n" );

void main ( void ) 
    application_init( );

    for ( ; ; ) 
        application_task( );

// ------------------------------------------------------------------------ END

Additional Support