accel28  2.1.0.0
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Accel 28 click

Accel 28 Click is a compact add-on board that contains an acceleration sensor. This board features the LIS2HH12TR, an ultra-low-power high-performance three-axis accelerometer from STMicroelectronics. It allows selectable full-scale acceleration measurements in ranges of ±2g, ±4g, and ±8g in three axes with a configurable host interface that supports both SPI and I2C serial communication.

click Product page


Click library

  • Author : Stefan Ilic
  • Date : May 2023.
  • Type : I2C/SPI type

Software Support

We provide a library for the Accel 28 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 28 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Accel 28 click board by reading and

displaying the accelerometer data (X, Y, and Z axis).

The demo application is composed of two sections :

Application Init

Initializes the driver, performs the click default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
accel28_cfg_t accel28_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
accel28_cfg_setup( &accel28_cfg );
ACCEL28_MAP_MIKROBUS( accel28_cfg, MIKROBUS_1 );
err_t init_flag = accel28_init( &accel28, &accel28_cfg );
if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
uint8_t id_data = 0;
accel28_generic_read( &accel28, ACCEL28_REG_WHO_AM_I, &id_data, 1 );
if ( ACCEL28_WHO_AM_I_VALUE != id_data )
{
log_error( &logger, " Communication error." );
for ( ; ; );
}
if ( ACCEL28_ERROR == accel28_default_cfg ( &accel28 ) )
{
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)

when it is available.

void application_task ( void )
{
err_t error_flag = ACCEL28_OK;
{
uint8_t tmp_data;
error_flag = accel28_read_reg( &accel28, ACCEL28_REG_STATUS, &tmp_data );
if ( ( tmp_data & ACCEL28_STATUS_ZYX_DATA_AVL ) && ( ACCEL28_OK == error_flag ) )
{
error_flag = accel28_get_data( &accel28, &accel_data );
if ( ACCEL28_OK == error_flag )
{
log_printf( &logger, " X-axis %.2f mg\r\n", accel_data.x_data );
log_printf( &logger, " Y-axis %.2f mg\r\n", accel_data.y_data );
log_printf( &logger, " Z-axis %.2f mg\r\n", accel_data.z_data );
log_printf( &logger, " = = = = = = = = = = = = = =\r\n" );
}
}
}
}

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.Accel28

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.


accel_data
accel28_data_t accel_data
Definition: main.c:28
accel28_default_cfg
err_t accel28_default_cfg(accel28_t *ctx)
Accel 28 default configuration function.
accel28_s
Accel 28 Click context object.
Definition: accel28.h:327
accel28_generic_read
err_t accel28_generic_read(accel28_t *ctx, uint8_t reg, uint8_t *data_out, uint8_t len)
Accel 28 data reading function.
ACCEL28_WHO_AM_I_VALUE
#define ACCEL28_WHO_AM_I_VALUE
Accel 28 description setting.
Definition: accel28.h:125
accel28_get_data
err_t accel28_get_data(accel28_t *ctx, accel28_data_t *data_out)
Accel 28 data reading function.
ACCEL28_PIN_STATE_HIGH
#define ACCEL28_PIN_STATE_HIGH
Accel 28 pin state setting.
Definition: accel28.h:255
accel28_write_reg
err_t accel28_write_reg(accel28_t *ctx, uint8_t reg, uint8_t data_in)
Accel 28 register data writing function.
application_task
void application_task(void)
Definition: main.c:75
accel28_data_t
Accel 28 Click data object.
Definition: accel28.h:372
ACCEL28_REG_STATUS
#define ACCEL28_REG_STATUS
Definition: accel28.h:83
accel28_cfg_setup
void accel28_cfg_setup(accel28_cfg_t *cfg)
Accel 28 configuration object setup function.
accel28_cfg_t
Accel 28 Click configuration object.
Definition: accel28.h:347
accel28_data_t::z_data
float z_data
Definition: accel28.h:375
accel28_read_reg
err_t accel28_read_reg(accel28_t *ctx, uint8_t reg, uint8_t *data_out)
Accel 28 register data reading function.
ACCEL28_OK
@ ACCEL28_OK
Definition: accel28.h:385
accel28_get_int_state
uint8_t accel28_get_int_state(accel28_t *ctx)
Accel 28 interrupt reading function.
accel28_sw_reset
err_t accel28_sw_reset(accel28_t *ctx)
Accel 28 SW reset function.
application_init
void application_init(void)
Definition: main.c:30
accel28_data_t::x_data
float x_data
Definition: accel28.h:373
accel28_data_t::y_data
float y_data
Definition: accel28.h:374
ACCEL28_MAP_MIKROBUS
#define ACCEL28_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: accel28.h:293
ACCEL28_REG_WHO_AM_I
#define ACCEL28_REG_WHO_AM_I
Definition: accel28.h:73
accel28_init
err_t accel28_init(accel28_t *ctx, accel28_cfg_t *cfg)
Accel 28 initialization function.
ACCEL28_ERROR
@ ACCEL28_ERROR
Definition: accel28.h:386
ACCEL28_STATUS_ZYX_DATA_AVL
#define ACCEL28_STATUS_ZYX_DATA_AVL
Definition: accel28.h:235