accel22  2.0.0.0
Main Page

Accel 22 click

Accel 22 Click is a compact add-on board that contains an acceleration sensor. This board features the ADXL367, an ultra-low-power, high-performance three-axis accelerometer from Analog Devices. The ADXL367 allows selectable full-scale acceleration measurements in ranges of ±2g, ±4g, and ±8g in three axes, with a resolution of 0.25 mg/LSB on the ±2g range, alongside a configurable host interface that supports both SPI and I2C serial communication. This device combines a 3-axis MEMS accelerometer, a temperature sensor, and a 14-bit analog-to-digital converter (ADC) to synchronize an external analog signal conversion.

click Product page


Click library

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

Software Support

We provide a library for the Accel 22 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 22 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Accel 22 click board by reading and displaying Accel data (X, Y, and Z axis) as well as temperature and ADC measurements on the USB UART.

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;
accel22_cfg_t accel22_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
accel22_cfg_setup( &accel22_cfg );
ACCEL22_MAP_MIKROBUS( accel22_cfg, MIKROBUS_1 );
err_t init_flag = accel22_init( &accel22, &accel22_cfg );
if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( ACCEL22_ERROR == accel22_default_cfg ( &accel22 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Reads and displays the Accel data (X, Y, and Z axis) as well as temperature and ADC measurements on the USB UART every 100ms approximately.

void application_task ( void )
{
// Wait for data ready indication
while ( !accel22_get_int1_pin ( &accel22 ) );
if ( ACCEL22_OK == accel22_get_axes ( &accel22, &axes ) )
{
log_printf( &logger, " X: %.2f mg\r\n", axes.x );
log_printf( &logger, " Y: %.2f mg\r\n", axes.y );
log_printf( &logger, " Z: %.2f mg\r\n", axes.z );
}
{
float temperature = 0;
// Wait for data ready indication
while ( !accel22_get_int1_pin ( &accel22 ) );
if ( ACCEL22_OK == accel22_get_temperature ( &accel22, &temperature ) )
{
log_printf( &logger, " Temperature: %.2f C\r\n", temperature );
}
}
{
float adc_voltage = 0;
// Wait for data ready indication
while ( !accel22_get_int1_pin ( &accel22 ) );
if ( ACCEL22_OK == accel22_get_adc ( &accel22, &adc_voltage ) )
{
log_printf( &logger, " ADC: %.2f V\r\n\n", adc_voltage );
}
}
Delay_ms ( 100 );
}

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.Accel22

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.


accel22_axes_t::x
float x
Definition: accel22.h:343
accel22_get_adc
err_t accel22_get_adc(accel22_t *ctx, float *v_adc)
Accel 22 get adc function.
ACCEL22_ERROR
@ ACCEL22_ERROR
Definition: accel22.h:385
application_task
void application_task(void)
Definition: main.c:66
accel22_enable_adc_measurement
err_t accel22_enable_adc_measurement(accel22_t *ctx)
Accel 22 enable ADC measurement function.
accel22_get_temperature
err_t accel22_get_temperature(accel22_t *ctx, float *temperature)
Accel 22 get temperature function.
accel22_default_cfg
err_t accel22_default_cfg(accel22_t *ctx)
Accel 22 default configuration function.
accel22_cfg_t
Accel 22 Click configuration object.
Definition: accel22.h:316
ACCEL22_MAP_MIKROBUS
#define ACCEL22_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: accel22.h:258
accel22_axes_t
Accel 22 Click Axes data structure.
Definition: accel22.h:342
accel22_get_int1_pin
uint8_t accel22_get_int1_pin(accel22_t *ctx)
Accel 22 get int1 pin function.
accel22_init
err_t accel22_init(accel22_t *ctx, accel22_cfg_t *cfg)
Accel 22 initialization function.
accel22_axes_t::z
float z
Definition: accel22.h:345
accel22_cfg_setup
void accel22_cfg_setup(accel22_cfg_t *cfg)
Accel 22 configuration object setup function.
accel22_get_axes
err_t accel22_get_axes(accel22_t *ctx, accel22_axes_t *axes)
Accel 22 get axes function.
application_init
void application_init(void)
Definition: main.c:29
accel22_enable_temperature_measurement
err_t accel22_enable_temperature_measurement(accel22_t *ctx)
Accel 22 enable temperature measurement function.
accel22_s
Accel 22 Click context object.
Definition: accel22.h:293
accel22_axes_t::y
float y
Definition: accel22.h:344
ACCEL22_OK
@ ACCEL22_OK
Definition: accel22.h:384