accel27  2.1.0.0
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Accel 27 click

Accel 27 Click is a compact add-on board that contains an acceleration sensor. This board features the ADXL373, a three-axis MEMS ±400g accelerometer from Analog Devices. In addition to its ultra-low power consumption, the ADXL373 enables impact detection while providing system-level power reduction. It offers 12-bit output data at 200mg/LSB scale factor with a configurable host interface that supports SPI and I2C serial communication.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Dec 2022.
  • Type : I2C/SPI type

Software Support

We provide a library for the Accel 27 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Accel 27 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Accel 27 click board by reading and displaying the accelerometer data (X, Y, and Z axis) averaged from 100 samples.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the click default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
accel27_cfg_t accel27_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
accel27_cfg_setup( &accel27_cfg );
ACCEL27_MAP_MIKROBUS( accel27_cfg, MIKROBUS_1 );
err_t init_flag = accel27_init( &accel27, &accel27_cfg );
if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( ACCEL27_ERROR == accel27_default_cfg ( &accel27 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Reads and displays on the USB UART the accelerometer data (X, Y, and Z axis) averaged from 100 samples.

void application_task ( void )
{
accel27_axes_t axes = { 0 };
uint16_t cnt = 0;
while ( cnt < NUM_OF_SAMPLES )
{
// Wait for data ready indication
while ( !accel27_get_int1_pin ( &accel27 ) );
accel27_axes_t tmp_axes;
if ( ACCEL27_OK == accel27_get_axes ( &accel27, &tmp_axes ) )
{
axes.x += tmp_axes.x;
axes.y += tmp_axes.y;
axes.z += tmp_axes.z;
cnt++;
}
}
axes.x = axes.x / NUM_OF_SAMPLES;
axes.y = axes.y / NUM_OF_SAMPLES;
axes.z = axes.z / NUM_OF_SAMPLES;
log_printf( &logger, " X: %.1f g\r\n", axes.x );
log_printf( &logger, " Y: %.1f g\r\n", axes.y );
log_printf( &logger, " Z: %.1f g\r\n\n", axes.z );
}

Note

This click board should be used for high g applications of up to +-400g. It is not recommended

for low g applications because of its high scale factor which is about 200 mg per LSB.

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.Accel27

Additional notes and informations

Depending on the development board you are using, you may need 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. UART terminal is available in all MikroElektronika compilers.


accel27_default_cfg
err_t accel27_default_cfg(accel27_t *ctx)
Accel 27 default configuration function.
NUM_OF_SAMPLES
#define NUM_OF_SAMPLES
Definition: main.c:30
ACCEL27_ERROR
@ ACCEL27_ERROR
Definition: accel27.h:329
accel27_s
Accel 27 Click context object.
Definition: accel27.h:268
accel27_cfg_setup
void accel27_cfg_setup(accel27_cfg_t *cfg)
Accel 27 configuration object setup function.
accel27_axes_t
Accel 27 Click Axes data structure.
Definition: accel27.h:315
accel27_get_axes
err_t accel27_get_axes(accel27_t *ctx, accel27_axes_t *axes)
Accel 27 get axes function.
accel27_axes_t::y
float y
Definition: accel27.h:317
application_task
void application_task(void)
Definition: main.c:72
accel27_reset_device
err_t accel27_reset_device(accel27_t *ctx)
Accel 27 reset device function.
accel27_axes_t::x
float x
Definition: accel27.h:316
accel27_cfg_t
Accel 27 Click configuration object.
Definition: accel27.h:289
accel27_init
err_t accel27_init(accel27_t *ctx, accel27_cfg_t *cfg)
Accel 27 initialization function.
ACCEL27_OK
@ ACCEL27_OK
Definition: accel27.h:328
accel27_get_int1_pin
uint8_t accel27_get_int1_pin(accel27_t *ctx)
Accel 27 get int1 pin function.
ACCEL27_MAP_MIKROBUS
#define ACCEL27_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: accel27.h:233
application_init
void application_init(void)
Definition: main.c:35
accel27_axes_t::z
float z
Definition: accel27.h:318