uva  2.0.0.0
Main Page

UVA click

UVA Click is a compact add-on board used to detect solar UV index. This board features the GUVA-C32SM, an ultraviolet light sensor capable of measuring UV index between 0 to 14 from Genicom Co., Ltd. It contains the GaN-based chip die, amplifiers, ADC, digital control logic, and I2C interface circuit to measure UVA volumes, working in the spectral range of 220-370nm. The GUVA-C32M can acquire the intensity of UVA, respectively, and outputs digital count according to each intensity.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Dec 2021.
  • Type : I2C type

Software Support

We provide a library for the UVA 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 UVA Click driver.

Standard key functions :

Example key functions :

  • uva_read_data This function reads the raw UVA data from registers.
    err_t uva_read_data ( uva_t *ctx, uint16_t *uva_data );
  • uva_soft_reset This function executes the soft reset command.
    err_t uva_soft_reset ( uva_t *ctx );
  • uva_write_register This function writes a data byte to the selected register by using I2C serial interface.
    err_t uva_write_register ( uva_t *ctx, uint8_t reg, uint8_t data_in );

Example Description

This example demonstrates the use of UVA click board by reading and displaying the UVA data measurement results.

The demo application is composed of two sections :

Application Init

Initializes the driver and applies the click default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
uva_cfg_t uva_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
uva_cfg_setup( &uva_cfg );
UVA_MAP_MIKROBUS( uva_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == uva_init( &uva, &uva_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( UVA_ERROR == uva_default_cfg ( &uva ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Reads the UVA data measurements every 100ms and displays the results on the USB UART.

void application_task ( void )
{
uint16_t uva_data = 0;
if ( UVA_OK == uva_read_data ( &uva, &uva_data ) )
{
log_printf ( &logger, " UVA data: %u \r\n\n", uva_data );
Delay_ms ( 100 );
}
}

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.UVA

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.


uva_read_data
err_t uva_read_data(uva_t *ctx, uint16_t *uva_data)
UVA read data function.
UVA_OK
@ UVA_OK
Definition: uva.h:212
application_task
void application_task(void)
Definition: main.c:64
uva_init
err_t uva_init(uva_t *ctx, uva_cfg_t *cfg)
UVA initialization function.
uva_soft_reset
err_t uva_soft_reset(uva_t *ctx)
UVA soft reset function.
uva_cfg_setup
void uva_cfg_setup(uva_cfg_t *cfg)
UVA configuration object setup function.
uva_default_cfg
err_t uva_default_cfg(uva_t *ctx)
UVA default configuration function.
UVA_ERROR
@ UVA_ERROR
Definition: uva.h:213
application_init
void application_init(void)
Definition: main.c:28
uva_cfg_t
UVA Click configuration object.
Definition: uva.h:197
uva_write_register
err_t uva_write_register(uva_t *ctx, uint8_t reg, uint8_t data_in)
UVA write register function.
UVA_MAP_MIKROBUS
#define UVA_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: uva.h:171
uva_t
UVA Click context object.
Definition: uva.h:183