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mikroSDK Library

UV 3 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.16

mikroSDK Library: 2.0.0.0

Category: Optical

Downloaded: 418 times

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License: MIT license  

UV 3 Click is an advanced ultraviolet (UV) light sensor with I2C protocol interface. The Click carries VEML6070 UVA light sensor designed by the CMOS process. UV 3 Click runs on either 3.3V or 5V power supply.

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  • mikroSDK Library 1.0.0.0
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UV 3 Click

UV 3 Click is an advanced ultraviolet (UV) light sensor with I2C protocol interface. The Click carries VEML6070 UVA light sensor designed by the CMOS process. UV 3 Click runs on either 3.3V or 5V power supply.

uv3_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : Jan 2020.
  • Type : I2C type

Software Support

We provide a library for the Uv3 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 Uv3 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void uv3_cfg_setup ( uv3_cfg_t *cfg );

  • Initialization function.

    UV3_RETVAL uv3_init ( uv3_t ctx, uv3_cfg_t cfg );

  • Click Default Configuration function.

    void uv3_default_cfg ( uv3_t *ctx );

Example key functions :

  • Function enable sensor by sets shutdown mode bits as LOW to the target 8-bit CMD slave address.

    void uv3_enable_sensor ( uv3_t *ctx );

  • Function read UV data measurements from to the two target 8-bit slave address.

    uint16_t uv3_read_measurements ( uv3_t *ctx );

  • Function calculate UV risk level of VEML6070 sensor on UV 3 Click.

    uint8_t uv3_risk_level ( uint16_t uv_data );

Examples Description

Converts solar UV light intensity to digital data and measure UV radiation under long time solar UV exposure.

The demo application is composed of two sections :

Application Init

Initialization driver enable's - I2C, enable sensor and start write log.


void application_init ( void )
{
    log_cfg_t log_cfg;
    uv3_cfg_t cfg;

    /** 
     * 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.

    uv3_cfg_setup( &cfg );
    UV3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    uv3_init( &uv3, &cfg );
    uv3_default_cfg ( &uv3 );
}

Application Task

This example measures the level of the UV light and logs every 2 seconds to the terminal.


void application_task ( void )
{
    uv_data = uv3_read_measurements( &uv3 );

    risk_lvl = uv3_risk_level( uv_data );

    log_printf( &logger, " UV value  : %d\r\n ", uv_data );

    log_printf( &logger, " Radiation lvl : " );

    if ( risk_lvl == UV3_RAD_LOW )
    {
        log_printf( &logger, " Low\r\n " );
    }

    if ( risk_lvl == UV3_RAD_MODERATE )
    {
        log_printf( &logger, " Moderate\r\n " );
    }

    if ( risk_lvl == UV3_RAD_HIGH )
    {
        log_printf( &logger, " High\r\n " );
    }

    if ( risk_lvl == UV3_RAD_VERY_HIGH )
    {
        log_printf( &logger, " Very High\r\n " );
    }

    if ( risk_lvl == UV3_RAD_EXTREME )
    {
        log_printf( &logger, " Extreme\r\n " );
    }

    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}

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:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Uv3

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.


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