ambient19  2.0.0.0
Main Page

Ambient 19 click

Ambient 19 Click is a compact add-on board used to measure the amount of the present ambient light. This board features the APM-16D24-310-DF8/TR8, a digital output ambient light and proximity sensor with an I2C interface and interrupt from Everlight Electronics. It has a flexible and wide operating range for the ambient light sensor with a maximum resolution of 0.0023Lux/count and full detectable illumination of 57880Lux. The proximity function has an adjustable number of IR pulses from 1 to 256, and a flexible IR LED driving current to meet different application requirements. It is also equipped with an integrated filter to reduce unwanted IR signals and noise from the environment.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Jun 2022.
  • Type : I2C type

Software Support

We provide a library for the Ambient 19 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 Ambient 19 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Ambient 19 click board by measuring the ambient light level in Lux.

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;
ambient19_cfg_t ambient19_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
ambient19_cfg_setup( &ambient19_cfg );
AMBIENT19_MAP_MIKROBUS( ambient19_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == ambient19_init( &ambient19, &ambient19_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( AMBIENT19_ERROR == ambient19_default_cfg ( &ambient19 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Waits for the data ready interrupt, then reads the ambient light level in Lux as well as the raw proximity data of PS and IR leds and displays the results on the USB UART.

By default, the data ready interrupt triggers upon every ADC cycle which will be performed every 500ms approximately.

void application_task ( void )
{
if ( !ambient19_get_int_pin ( &ambient19 ) )
{
uint16_t lux, ps_data, ir_data;
if ( AMBIENT19_OK == ambient19_measure_light_level ( &ambient19, &lux ) )
{
log_printf ( &logger, "\r\n Ambient light level [Lux]: %u\r\n", lux );
}
if ( AMBIENT19_OK == ambient19_read_raw_proximity ( &ambient19, &ps_data, &ir_data ) )
{
log_printf ( &logger, " PS data: %u\r\n", ps_data );
log_printf ( &logger, " IR data: %u\r\n", ir_data );
}
}
}

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.Ambient19

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.


ambient19_default_cfg
err_t ambient19_default_cfg(ambient19_t *ctx)
Ambient 19 default configuration function.
ambient19_t
Ambient 19 Click context object.
Definition: ambient19.h:266
ambient19_cfg_t
Ambient 19 Click configuration object.
Definition: ambient19.h:286
AMBIENT19_MAP_MIKROBUS
#define AMBIENT19_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: ambient19.h:253
ambient19_cfg_setup
void ambient19_cfg_setup(ambient19_cfg_t *cfg)
Ambient 19 configuration object setup function.
application_task
void application_task(void)
Definition: main.c:67
ambient19_init
err_t ambient19_init(ambient19_t *ctx, ambient19_cfg_t *cfg)
Ambient 19 initialization function.
AMBIENT19_ERROR
@ AMBIENT19_ERROR
Definition: ambient19.h:304
ambient19_get_int_pin
uint8_t ambient19_get_int_pin(ambient19_t *ctx)
Ambient 19 get INT pin function.
ambient19_read_raw_proximity
err_t ambient19_read_raw_proximity(ambient19_t *ctx, uint16_t *ps_data, uint16_t *ir_data)
Ambient 19 read raw proximity function.
application_init
void application_init(void)
Definition: main.c:31
AMBIENT19_OK
@ AMBIENT19_OK
Definition: ambient19.h:303
ambient19_clear_interrupts
err_t ambient19_clear_interrupts(ambient19_t *ctx)
Ambient 19 clear interrupts function.
ambient19_measure_light_level
err_t ambient19_measure_light_level(ambient19_t *ctx, uint16_t *lux)
Ambient 19 measure light level function.