irgesture2  2.0.0.0
Main Page

IR Gesture 2 click

IR Gesture 2 Click is a compact add-on board that provides contactless gesture recognition. This board features the MAX25405, a data-acquisition system for the gesture and proximity sensing from Analog Devices. Detection distance is improved by integrating a complete optical system with a lens, aperture, visible light filter, and a 6x10 photodetector array. The proximity, hand detection, and gesture recognition functions of the MAX25405 operate by detecting the light reflected from the controlled IR-LED light sources driven directly from the MAX25405. It can also detect these gestures even when exposed to bright ambient light and process data from the sensor through an SPI interface.

click Product page


Click library

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

Software Support

We provide a library for the IR Gesture 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 IR Gesture 2 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of IR Gesture 2 click board by reading and displaying the raw ADC values of entire 60-pixel IR photodiode array.

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;
irgesture2_cfg_t irgesture2_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
irgesture2_cfg_setup( &irgesture2_cfg );
IRGESTURE2_MAP_MIKROBUS( irgesture2_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == irgesture2_init( &irgesture2, &irgesture2_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( IRGESTURE2_ERROR == irgesture2_default_cfg ( &irgesture2 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Waits for an end of conversion interrupt and then reads the raw ADC values of entire

60-pixel IR photodiode array and displays the results on the USB UART as a 10x6 matrix every 100ms approximately.

void application_task ( void )
{
// Wait for an end of conversion interrupt
while ( irgesture2_get_int_pin ( &irgesture2 ) );
int16_t pixels[ IRGESTURE2_NUM_SENSOR_PIXELS ];
if ( IRGESTURE2_OK == irgesture2_read_pixels ( &irgesture2, pixels, false ) )
{
for ( uint8_t cnt = 0; cnt < IRGESTURE2_NUM_SENSOR_PIXELS; cnt++ )
{
if ( 0 == ( cnt % IRGESTURE2_SENSOR_X_SIZE ) )
{
log_printf( &logger, "\r\n" );
}
log_printf( &logger, "%d\t", pixels[ cnt ] );
}
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.IRGesture2

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.


irgesture2_write_register
err_t irgesture2_write_register(irgesture2_t *ctx, uint8_t reg, uint8_t data_in)
IR Gesture 2 write register function.
irgesture2_read_pixels
err_t irgesture2_read_pixels(irgesture2_t *ctx, int16_t *pixels, bool flip_pixels)
IR Gesture 2 read pixels function.
irgesture2_init
err_t irgesture2_init(irgesture2_t *ctx, irgesture2_cfg_t *cfg)
IR Gesture 2 initialization function.
irgesture2_get_int_pin
uint8_t irgesture2_get_int_pin(irgesture2_t *ctx)
IR Gesture 2 get int pin function.
application_task
void application_task(void)
Definition: main.c:66
irgesture2_cfg_setup
void irgesture2_cfg_setup(irgesture2_cfg_t *cfg)
IR Gesture 2 configuration object setup function.
irgesture2_t
IR Gesture 2 Click context object.
Definition: irgesture2.h:422
IRGESTURE2_ERROR
@ IRGESTURE2_ERROR
Definition: irgesture2.h:462
irgesture2_default_cfg
err_t irgesture2_default_cfg(irgesture2_t *ctx)
IR Gesture 2 default configuration function.
IRGESTURE2_NUM_SENSOR_PIXELS
#define IRGESTURE2_NUM_SENSOR_PIXELS
Definition: irgesture2.h:378
IRGESTURE2_MAP_MIKROBUS
#define IRGESTURE2_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: irgesture2.h:407
IRGESTURE2_SENSOR_X_SIZE
#define IRGESTURE2_SENSOR_X_SIZE
IR Gesture 2 sensor pixels size.
Definition: irgesture2.h:376
irgesture2_cfg_t
IR Gesture 2 Click configuration object.
Definition: irgesture2.h:438
application_init
void application_init(void)
Definition: main.c:30
IRGESTURE2_OK
@ IRGESTURE2_OK
Definition: irgesture2.h:461