ambient20  2.1.0.0
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Ambient 20 Click

Ambient 20 Click is a compact add-on board used to measure the amount of the present ambient light. This board features the BU27030NUC, a 16-bit digital-output ambient light sensor with an I2C interface from Rohm Semiconductor. The BU27030NUC has a flexible and wide operating range of up to 20klx with a maximum resolution of 0.0007lux/count, providing an excellent responsivity close to the human eyes' response. It also features inherent 50Hz/60Hz light noise rejection and excellent IR-cut characteristics for high robustness at high sensitivity.

Click Product page


Click library

  • Author : Stefan Ilic
  • Date : Nov 2022.
  • Type : I2C type

Software Support

We provide a library for the Ambient 20 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 20 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Ambient 20 Click board by measuring the ambient light level.

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;
ambient20_cfg_t ambient20_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
ambient20_cfg_setup( &ambient20_cfg );
AMBIENT20_MAP_MIKROBUS( ambient20_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == ambient20_init( &ambient20, &ambient20_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( AMBIENT20_ERROR == ambient20_default_cfg ( &ambient20 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
uint8_t id;
ambient20_get_manufacturer_id( &ambient20, &id );
log_printf( &logger, "- - - - - - - - - - - - -\r\n" );
log_printf( &logger, " Part ID = 0x%.2X \r\n", ( uint16_t ) id );
log_printf( &logger, "- - - - - - - - - - - - -\r\n" );
log_info( &logger, " Application Task " );
log_printf( &logger, "- - - - - - - - - - - - -\r\n" );
}

Application Task

Measuring ambient light level by reading DATA0 and DATA1 channels of the Ambient 20 Click board and displaying it using UART Serial terminal.

void application_task ( void )
{
// Task implementation.
float data0, data1;
ambient20_get_data_lux( &ambient20, &data0, &data1 );
log_printf( &logger, "Data 0: %.2f lx \r\n", data0 );
log_printf( &logger, "Data 1: %.2f lx \r\n", data1 );
log_printf( &logger, "- - - - - - - - - - - - -\r\n" );
Delay_ms ( 1000 );
}

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.Ambient20

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.


ambient20_read_data0
err_t ambient20_read_data0(ambient20_t *ctx, uint16_t *data0_out)
Ambient 20 read data0 function.
ambient20_cfg_t
Ambient 20 Click configuration object.
Definition: ambient20.h:172
ambient20_default_cfg
err_t ambient20_default_cfg(ambient20_t *ctx)
Ambient 20 default configuration function.
ambient20_get_data_lux
err_t ambient20_get_data_lux(ambient20_t *ctx, float *data0_out, float *data1_out)
Ambient 20 read light function.
ambient20_t
Ambient 20 Click context object.
Definition: ambient20.h:155
ambient20_cfg_setup
void ambient20_cfg_setup(ambient20_cfg_t *cfg)
Ambient 20 configuration object setup function.
ambient20_get_manufacturer_id
err_t ambient20_get_manufacturer_id(ambient20_t *ctx, uint8_t *manufacturer_id)
Ambient 20 read manufacturer id function.
application_task
void application_task(void)
Definition: main.c:74
ambient20_set_gain
err_t ambient20_set_gain(ambient20_t *ctx, uint8_t data0_gain, uint8_t data1_gain)
Ambient 20 set data gain function.
ambient20_init
err_t ambient20_init(ambient20_t *ctx, ambient20_cfg_t *cfg)
Ambient 20 initialization function.
ambient20_sw_reset
err_t ambient20_sw_reset(ambient20_t *ctx)
Ambient 20 software reset function.
AMBIENT20_MAP_MIKROBUS
#define AMBIENT20_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: ambient20.h:143
application_init
void application_init(void)
Definition: main.c:29
AMBIENT20_ERROR
@ AMBIENT20_ERROR
Definition: ambient20.h:188