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mikroSDK Library

Ambient 8 click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2018-12-26

Category: Optical

Downloaded: 322 times

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License: MIT license  

Ambient 8 click is equipped with the ambient light sensor (ALS) IC, providing measurements of the ambient light intensity in a digital format. It utilizes the LTR-329ALS-01, an ALS with the I2C interface.

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mikroSDK Library Blog

Ambient 8 click

Ambient 8 click

Native view of the Ambient 8 click board.

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Ambient 8 click

Ambient 8 click

Front and back view of the Ambient 8 click board.

View full image

Library Description

Library contains function for reading data from device registers Library contains function for writing data to device registers Libraty contains function for setting constants ( gain and integration time ) for Lux calculations Library contains function for device initialization Library contains function for reading ALS data ( channel 0 and channel 1 ) Library contains function for calculating Lux level based on ALS data from channels 0 and 1, window factor and IR factor.

Key functions:

  • void ambient8_setConstants( void ) - sets constants (gain and integration time) for lux level calculation.
  • void ambient8_init( void ) - initializes the device, sets gain to 8X, sets integration time to 400ms.
  • uint8_t ambient8_getLuxLevel( float * luxLevel_, float windowFactor_, float IRfactor_ ) - reads and data and performs lux level calculation.

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes LOG and I2C.
  • Application Initialization - Initializes device and I2C driver.
  • Application Task - Performs Lux calculation based on window and IR factor and log results.
void applicationTask( )
{
    statusFlag = ambient8_getLuxLevel( &luxLevel, windowFactor, IRfactor );

    if (statusFlag == 0)
    {
        mikrobus_logWrite( "lux Level : ", _LOG_TEXT );
        FloatToStr( luxLevel, text );
        mikrobus_logWrite( text, _LOG_TEXT );
        mikrobus_logWrite( " lx", _LOG_LINE );
        mikrobus_logWrite( " ", _LOG_LINE );
    }
}

Other mikroE Libraries used in the example:

  • I2C
  • UART
  • Conversions

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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.

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