UVB Click

UVB Click is ultraviolet sensing board based on GUVB-C31SM sensor from GenUV, capable of measuring UV index between 0 to 16. UVB Click supports integrated functions of ultraviolet light sensors such that can be easily configured and used in user applications. Overexposure to UVB radiation not only can cause sunburn but also some forms of skin cancer, so knowing amount of UVB light can be quite important and this Click board™ is perfect solution for that task.

Click Product page

Click library

• Author : Mikroe Team
• Date : Sep 2021.
• Type : I2C type

Software Support

We provide a library for the UVB 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 UVB Click driver.

Standard key functions :

• uvb_cfg_setup Config Object Initialization function.

  void uvb_cfg_setup ( uvb_cfg_t *cfg );

• uvb_init Initialization function.

  err_t uvb_init ( uvb_t *ctx, uvb_cfg_t *cfg );

• uvb_default_cfg Click Default Configuration function.

  err_t uvb_default_cfg ( uvb_t *ctx );

Example key functions :

• uvb_configuration Configuration register.

  void uvb_configuration ( uvb_t *ctx, uint8_t reg, uint8_t cfg );

• uvb_read_byte Read one byte data from register.

  uint8_t uvb_read_byte ( uvb_t *ctx, uint8_t reg );

• uvb_get_uv_data Get UVB data.

  uint16_t uvb_get_uv_data ( uvb_t *ctx );

Example Description

This Click is ultraviolet sensing board, capable of measuring UV index between 0 to 16. UVB Click supports integrated functions of ultraviolet light sensors.

The demo application is composed of two sections :

Application Init

Initialization driver init, check communication and configuration module for measurement.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    uvb_cfg_t uvb_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.
    uvb_cfg_setup( &uvb_cfg );
    UVB_MAP_MIKROBUS( uvb_cfg, MIKROBUS_1 );
    err_t init_flag = uvb_init( &uvb, &uvb_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    uvb_default_cfg ( &uvb );
    log_info( &logger, " Application Task " );
    log_printf( &logger, "--------------------------\r\n" );
}

Application Task

Reads UVB data and logs to the USBUART every 1500ms.

void application_task ( void ) 
{
    uvb_data = uvb_get_uv_data( &uvb );

    log_printf( &logger, ">> UVB data: %d\r\n", uvb_data );

    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 500 );
}

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.UVB

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.