proximity9  2.0.0.0
Main Page

Proximity 9 click

Proximity 9 click is a very accurate and reliable proximity sensing (PS) and ambient light sensing (ALS) device, equipped with the VCNL4040, an integrated PS and ALS sensor which features the Filtron™ technology.

click Product page


Click library

Software Support

We provide a library for the Proximity9 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Proximity9 Click driver.

Standard key functions :

Example key functions :

Examples Description

This application is proximity sensing (PS) and ambient light sensing (ALS) device.

The demo application is composed of two sections :

Application Init

Initializes I2C interface and performs a device configurations.

void application_init ( void )
{
log_cfg_t log_cfg;
// Logger initialization.
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
PROXIMITY9_MAP_MIKROBUS( cfg, MIKROBUS_1 );
proximity9_init( &proximity9, &cfg );
proximity9_default_cfg( &proximity9 );
log_printf( &logger, "** Proximity 9 is initialized ** \r\n" );
log_printf( &logger, "************************************ \r\n" );
Delay_ms( 300 );
}

Application Task

Performs a data reading and interrupt flag checking. Allows data and interrupt flags messages to be showed on the uart terminal.

{
uint8_t int_check;
uint16_t prox_data;
float als_data;
uint8_t temp;
als_data = proximity9_get_als_lux( &proximity9 );
proximity9_read_register( &proximity9, PROXIMITY9_PS_DATA_REG, &prox_data );
int_check = proximity9_check_int_flag( &proximity9, temp );
log_printf( &logger, "** ALS: %.2f lux \r\n", als_data );
log_printf( &logger, "** PROXIMITY: %d \r\n", prox_data );
if ( int_check == PROXIMITY9_PS_IF_CLOSE_FLAG )
{
log_printf( &logger, "** Object is close! \r\n" );
log_printf( &logger, "************************************ \r\n" );
Delay_ms( 200 );
}
if ( int_check == PROXIMITY9_PS_IF_AWAY_FLAG )
{
log_printf( &logger, "** Object is away!\r\n" );
log_printf( &logger, "************************************ \r\n" );
Delay_ms( 200 );
}
if ( int_check == PROXIMITY9_INT_CLEARED )
{
log_printf( &logger, "************************************ \r\n" );
Delay_ms( 200 );
}
}

Note

The ALS sensitivity depends on the ALS integration time setting. The longer integration time has higher sensitivity. The Proximity (PS) output data can be set to 12-bit or 16-bit resolution.

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.