smartsens2  2.0.0.0
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Smart Sens 2 click

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Click library

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

Software Support

We provide a library for the Smart Sens 2 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 Smart Sens 2 Click driver.

Standard key functions :

Example key functions :

Example Description

This example showcases the ability of the Smart Sens 2 click board.

It has multiple examples that you can easily select with the defines at the top of the main. There are 9 examples: Euler, Quaternion, Vector (Accelerometer, Gyroscope, Magnetometer), and Environmental (Temperature, Barometer, Humidity, Gas).

The demo application is composed of two sections :

Application Init

Initialization of communication modules (SPI/I2C) and additional

pins(int_pin, rst). After that going through reset sequence and checking device and product IDs, interrupt mask, and host control is set to 0, so every interrupt enabled. If boot status is OK boot sequence is initiated, depending on the defines from the library header it will use RAM or Flash type of the boot. If RAM is selected firmware image first needs to be uploaded to RAM and then it will be booted. If Flash example is selected it will try to boot firmware first if it fails it will then write firmware image to flash and then try to boot it again. When firmware boot is finished Kernel version and Feature registers will be read to check if the firmware is loaded. Then all the callback function will be registered(meta event callback and whatever type of example parser you set), and driver will update the list of virtual sensors present, and finally will configure virtual sensor that will be used in the selected example.

void application_init ( void )
{
log_cfg_t log_cfg;
smartsens2_cfg_t smartsens2_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
smartsens2_cfg_setup( &smartsens2_cfg );
SMARTSENS2_MAP_MIKROBUS( smartsens2_cfg, MIKROBUS_1 );
err_t init_flag = smartsens2_init( &smartsens2, &smartsens2_cfg );
if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
/* It can take a few seconds to configure and boot device */
log_info( &logger, " Configuring device..." );
if ( SMARTSENS2_ERROR == smartsens2_default_cfg ( &smartsens2 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Setting callbacks..." );
/* Set callbacks */
parse_meta_event, &accuracy ) )
{
log_error( &logger, " FIFO sys meta event." );
for ( ; ; );
}
parse_meta_event, &accuracy ) )
{
log_error( &logger, " FIFO sys meta event wu." );
for ( ; ; );
}
uint8_t sensor_id;
void *callback_ref;
#if EULER
callback = parse_euler;
#elif QUATERNION
callback = parse_quaternion;
callback_ref = NULL;
#elif VECTOR
#if ACCELEROMETER
parse_table.sensor[ SMARTSENS2_SENSOR_ID_ACC ].scaling_factor = 1.0f / 4096.0f;
#elif GYROSCOPE
parse_table.sensor[ SMARTSENS2_SENSOR_ID_GYRO ].scaling_factor = 1.0f;
#elif MAGNETOMETER
parse_table.sensor[ SMARTSENS2_SENSOR_ID_MAG ].scaling_factor = 1.0f;
#else
#error NO_VECTOR_EXAMPLE_DEFINED
#endif
callback = parse_vector_s16;
callback_ref = &parse_table;
#elif ENVIRONMENTAL
#if TEMPERATURE
callback = parse_temperature;
#elif BAROMETER
callback = parse_barometer;
#elif HUMIDITY
callback = parse_humidity;
#elif GAS
callback = parse_gas;
#else
#error NO_ENVIRONMENTAL_EXAMPLE_DEFINED
#endif
callback_ref = NULL;
#else
#error NO_EXAMPLE_DEFINED
#endif
{
log_error( &logger, " FIFO sensor id." );
for ( ; ; );
}
/* Go through fifo process */
{
log_error( &logger, " FIFO get and process." );
for ( ; ; );
}
/* Update virtual sensor list in context object */
{
log_error( &logger, " Update virtual sensor list." );
for ( ; ; );
}
/* Set virtual sensor configuration */
float sample_rate = 10.0; /* Read out data at 10Hz */
uint32_t report_latency_ms = 0; /* Report immediately */
if ( smartsens2_set_virt_sensor_cfg( &smartsens2, sensor_id, sample_rate, report_latency_ms ) )
{
log_error( &logger, " Set virtual sensor configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Wait for an interrupt to occur, then read wake-up, non-weak-up, and status FIFO.

Parse received data and run the callback parsers to show data on the USB UART.

void application_task ( void )
{
/* Check interrupt and get and process fifo buffer */
if ( smartsens2_get_interrupt( &smartsens2 ) )
{
/* Data from the FIFO is read and the relevant callbacks if registered are called */
{
log_error( &logger, " Get and process fifo." );
for ( ; ; );
}
}
}

Note

Select one of the examples with macros at the top of the main file. Euler example is selected by default.

You can choose one of 4 type of parsers: Euler, Quaternion, Vector, Environmental. If Vector example is selected you choose one of the 3 sensors to show X, Y, and Z values: Accelerometer, Gyroscope, or Magnetometer. If Environmental example is selected you choose one of the 4 sensors: Temperature, Barometer, Humidity, or Gas.

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.SmartSens2

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.


SMARTSENS2_SENSOR_ID_RV
#define SMARTSENS2_SENSOR_ID_RV
Definition: smartsens2.h:205
smartsens2_default_cfg
err_t smartsens2_default_cfg(smartsens2_t *ctx)
Smart Sens 2 default configuration function.
smartsens2_get_interrupt
uint8_t smartsens2_get_interrupt(smartsens2_t *ctx)
Get interrupt.
SMARTSENS2_SENSOR_ID_GAS
#define SMARTSENS2_SENSOR_ID_GAS
Definition: smartsens2.h:234
smartsens2_init
err_t smartsens2_init(smartsens2_t *ctx, smartsens2_cfg_t *cfg)
Smart Sens 2 initialization function.
SMARTSENS2_SENSOR_ID_GYRO
#define SMARTSENS2_SENSOR_ID_GYRO
Definition: smartsens2.h:191
SMARTSENS2_SENSOR_ID_ACC
#define SMARTSENS2_SENSOR_ID_ACC
Definition: smartsens2.h:185
smartsens2_s
Smart Sens 2 Click context object.
Definition: smartsens2.h:563
SMARTSENS2_SENSOR_ID_BARO
#define SMARTSENS2_SENSOR_ID_BARO
Definition: smartsens2.h:232
SMARTSENS2_SYS_ID_META_EVENT_WU
#define SMARTSENS2_SYS_ID_META_EVENT_WU
Definition: smartsens2.h:262
smartsens2_fifo_parse_callback_t
void(* smartsens2_fifo_parse_callback_t)(struct smartsens2_fifo_parse_data_info *callback_info, void *private_data)
Definition: smartsens2.h:482
SMARTSENS2_ERROR
@ SMARTSENS2_ERROR
Definition: smartsens2.h:616
smartsens2_set_virt_sensor_cfg
err_t smartsens2_set_virt_sensor_cfg(smartsens2_t *ctx, uint8_t sensor_id, float sample_rate, uint32_t latency)
Set configuration fro virtual sensor.
smartsens2_fifo_parse_callback_table::callback_ref
void * callback_ref
Definition: smartsens2.h:542
SMARTSENS2_SENSOR_ID_MAG
#define SMARTSENS2_SENSOR_ID_MAG
Definition: smartsens2.h:197
work_buffer
uint8_t work_buffer[WORK_BUFFER_SIZE]
Definition: main.c:74
application_task
void application_task(void)
Definition: main.c:337
smartsens2_fifo_parse_callback_table::callback
smartsens2_fifo_parse_callback_t callback
Definition: smartsens2.h:541
smartsens2_update_virtual_sensor_list
err_t smartsens2_update_virtual_sensor_list(smartsens2_t *ctx)
Update the callback table's information.
SMARTSENS2_SENSOR_ID_HUM
#define SMARTSENS2_SENSOR_ID_HUM
Definition: smartsens2.h:233
smartsens2_get_and_process_fifo
err_t smartsens2_get_and_process_fifo(smartsens2_t *ctx, uint8_t *work_buffer, uint32_t buffer_size)
Get and process the FIFO.
SMARTSENS2_MAP_MIKROBUS
#define SMARTSENS2_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: smartsens2.h:426
accuracy
uint8_t accuracy
Definition: main.c:77
application_init
void application_init(void)
Definition: main.c:213
SMARTSENS2_SENSOR_ID_TEMP
#define SMARTSENS2_SENSOR_ID_TEMP
Definition: smartsens2.h:231
smartsens2_cfg_setup
void smartsens2_cfg_setup(smartsens2_cfg_t *cfg)
Smart Sens 2 configuration object setup function.
SMARTSENS2_SYS_ID_META_EVENT
#define SMARTSENS2_SYS_ID_META_EVENT
Definition: smartsens2.h:258
smartsens2_cfg_t
Smart Sens 2 Click configuration object.
Definition: smartsens2.h:588
WORK_BUFFER_SIZE
#define WORK_BUFFER_SIZE
Definition: main.c:73
smartsens2_register_fifo_parse_callback
err_t smartsens2_register_fifo_parse_callback(smartsens2_t *ctx, uint8_t sensor_id, smartsens2_fifo_parse_callback_t callback, void *callback_ref)
Link a callback to virtual sensor.
SMARTSENS2_SENSOR_ID_ORI
#define SMARTSENS2_SENSOR_ID_ORI
Definition: smartsens2.h:211