uvc

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UVC Click

UVC Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

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

Software Support

Example Description

This Click is capable of measuring UVC spectrum in the range of 220nm up to 280nm and light intensity from 0mW/cm² up to 9.3mW/cm². With high sensitivity and good solar blindness, it can be used for monitoring sterilization lamps.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Uvc

Example Key Functions

• uvc_cfg_setup Config Object Initialization function.

void uvc_cfg_setup ( uvc_cfg_t *cfg );

• uvc_init Initialization function.

err_t uvc_init ( uvc_t *ctx, uvc_cfg_t *cfg );

• uvc_read_raw_data This function reads 12bit raw data.

uint16_t uvc_read_raw_data ( uvc_t *ctx );

• uvc_get_voltage This function calculate voltage from raw data.

float uvc_get_voltage ( uvc_t *ctx );

• uvc_calculate_power This function calculate power from voltage.

float uvc_calculate_power ( float voltage );

Application Init

Initializes the driver.

void application_init ( void )
{
    log_cfg_t log_cfg;
    uvc_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.

    uvc_cfg_setup( &cfg );
    UVC_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    uvc_init( &uvc, &cfg );
}

  

Application Task

Reads sensor raw data and calculates voltage and power of UVC light. The measured values will be displayed on the USB UART every 1500 ms.

void application_task ( void )
{
    uint16_t raw_data;
    float voltage;
    float power;
    
    raw_data = uvc_read_raw_data( &uvc );
    log_printf( &logger, "Raw data: %d\r\n", raw_data );
    
    voltage = uvc_get_voltage( &uvc );
    log_printf( &logger, "Voltage: %.4f mV\r\n", voltage );

    power = uvc_calculate_power( voltage );
    log_printf( &logger, "Power: %.4f mW/cm2\r\n", power );

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

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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