Mikroelektronika d.o.o.
UVA Click Board
UVA Click Board
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Das UVA Click Board™ ist eine kompakte Zusatzplatine zur Erkennung des UV-Index der Sonne. Diese Platine enthält den GUVA-C32SM, einen Ultraviolettlichtsensor von Genicom Co., Ltd., der den UV-Index zwischen 0 und 14 messen kann. Er enthält den GaN-basierten Chip, Verstärker, ADC, digitale Steuerlogik und eine I2C-Schnittstellenschaltung zur Messung von UVA-Volumina und arbeitet im Spektralbereich von 220–370 nm. Der GUVA-C32M kann jeweils die UVA-Intensität erfassen und gibt entsprechend jeder Intensität einen digitalen Zähler aus. Durch die richtige Verwendung des verfügbaren Energieverwaltungsmodus entsprechend der auszuführenden Arbeit kann der Stromverbrauch reduziert werden.
Das UVA Click Board™ eignet sich für verschiedene Anwendungen, beispielsweise zur Bestimmung der Belastung durch ultraviolette Strahlung in Labor- oder Umweltumgebungen, Wetterstationen, in der industriellen Fertigung und vielem mehr.
How Does The UVA Click Board™ Work?
The UVA Click Board™ as its foundation uses the GUVA-C32SM, an ultraviolet light sensor capable of measuring UV index between 0 to 14 from Genicom Co., Ltd. The GUVA-C32SM contains the GaN-based chip die, integrated amplifiers, analogue-to-digital converter, digital control logic, and serial interface circuit to measure detected solar UV index in the spectral range of 220-370nm. The GUVA-C32M acquires the intensity of UVA, respectively, and outputs digital count according to each intensity. A reasonable power management mode can reduce power consumption according to specific application requirements.
The UVA Click Board™ communicates with MCU using the standard I2C 2-Wire interface to read data and configure settings, supporting Standard Mode operation with a clock frequency of 100kHz and Fast Mode up to 400kHz. Since the sensor for operation requires a 3.3V logic voltage level only, this Click board™ also features the PCA9306 voltage-level translator from Texas Instruments. The I2C interface bus lines are routed to the dual bidirectional voltage-level translator, allowing this Click board™ to work with both 3.3V and 5V MCUs properly.
The UVA Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library that contains easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
| Type | Optical |
| Applications | The UVA Click Board™ can be used in applications such as determining exposure to ultraviolet radiation in a laboratory or environmental settings, weather stations, industrial manufacturing, and many more |
| On-board modules | GUVA-C32SM - ultraviolet light sensor capable of measuring UV index between 0 to 14 from Genicom Co., Ltd |
| Key Features | Integrated GaN Sensors for UVA, programmable gain and integration time, power management modes, I2C interface, and more |
| Interface | I2C |
| Compatibility | mikroBUS |
| Click board size | S (28.6 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout of the UVA Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| NC | 1 | AN | PWM | 16 | NC | ||
| NC | 2 | RST | INT | 15 | NC | ||
| NC | 3 | CS | RX | 14 | NC | ||
| NC | 4 | SCK | TX | 13 | NC | ||
| NC | 5 | MISO | SCL | 12 | SCL | I2C Clock | |
| NC | 6 | MOSI | SDA | 11 | SDA | I2C Data | |
| Power Supply | 3.3V | 7 | 3.3V | 5V | 10 | 5V | Power Supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| JP1 | VCC SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
UVA CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.3 | - | 5 | V |
| UV Index Range | 0 | - | 14 | |
| Resolution | - | 16 | - | bits |
| Operating Temperature Range | -30 | +25 | +85 | °C |
Software Support
We provide a library for the UVA Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on Mikroe Github account.
Library Description
This library contains an API for the UVA Click Board™ driver.
Key functions
-
uva_read_dataThis function reads the raw UVA data from registers. -
uva_soft_resetThis function executes the soft reset command. -
uva_write_registerThis function writes a data byte to the selected register by using an I2C serial interface.
Example Description
This example demonstrates the use of the UVA Click Board™ by reading and displaying the UVA data measurement results.
void application_task ( void )
{
uint16_t uva_data = 0;
if ( UVA_OK == uva_read_data ( &uva, &uva_data ) )
{
log_printf ( &logger, " UVA data: %u rnn", uva_data );
Delay_ms ( 100 );
}
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), 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 Information
Depending on the development board you are using, you may need a 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.
MIKROSDK
The UVA Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
UVA Click Board
Frequently Asked Questions
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