Illuminance Click

Illuminance Click is a compact add-on board that mimics how humans perceive light. This board features ams AG’s TSL2583, a very-high sensitivity light-to-digital converter that transforms light intensity to a digital signal output capable of the direct I2C interface. It combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit capable of providing a near-photopic response over an effective 16-bit dynamic range (16-bit resolution).

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Jun 2023.
• Type : I2C type

Software Support

We provide a library for the Illuminance 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 Illuminance Click driver.

Standard key functions :

• illuminance_cfg_setup Config Object Initialization function.

  void illuminance_cfg_setup ( illuminance_cfg_t *cfg );

• illuminance_init Initialization function.

  err_t illuminance_init ( illuminance_t *ctx, illuminance_cfg_t *cfg );

• illuminance_default_cfg Click Default Configuration function.

  err_t illuminance_default_cfg ( illuminance_t *ctx );

Example key functions :

• illuminance_set_atime This function sets the timing register for the selected integration time.

  err_t illuminance_set_atime ( illuminance_t *ctx, float atime_ms );

• illuminance_set_gain This function sets the gain level.

  err_t illuminance_set_gain ( illuminance_t *ctx, uint8_t gain );

• illuminance_read_raw_data This function checks if the data is ready and then reads the raw ADC data from two channels.

  err_t illuminance_read_raw_data ( illuminance_t *ctx, uint16_t *ch_0, uint16_t *ch_1 );

Example Description

This example demonstrates the use of Illuminance Click board by reading and displaying the RAW channels data measurements.

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;  /**< Logger config object. */
    illuminance_cfg_t illuminance_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    illuminance_cfg_setup( &illuminance_cfg );
    ILLUMINANCE_MAP_MIKROBUS( illuminance_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == illuminance_init( &illuminance, &illuminance_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( ILLUMINANCE_ERROR == illuminance_default_cfg ( &illuminance ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

Application Task

Waits for the data ready interrupt, then reads the RAW channels data measurements and displays the results on the USB UART. By default, the data ready interrupt triggers upon every ADC cycle which will be performed every 200ms.

void application_task ( void )
{
    if ( !illuminance_get_int_pin ( &illuminance ) )
    {
        uint16_t ch0 = 0;
        uint16_t ch1 = 0;
        if ( ILLUMINANCE_OK == illuminance_read_raw_data ( &illuminance, &ch0, &ch1 ) )
        {
            log_printf ( &logger, " CH0: %u\r\n", ch0 );
            log_printf ( &logger, " CH1: %u\r\n\n", ch1 );
        }
    }
}

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.Illuminance

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.