Library Description

Library initializes and defines I2C bus driver and driver functions which offer a choice to write data in registers and to read data from registers. Library also offers a choice to reads device temperature and ambient light in LUX. The user also has the function for reset chip and function for read interrupt state.

Key functions:

• uint8_t ambient3_readByte(uint8_t virtualReg) - Function for reads one byte.
• uint8_t ambient3_getDeviceTemperature() - Function for reading device temperature.
• float ambient3_getDataInLUX() - Function for reads Light data in LUX.

Examples description

The application is composed of three sections :

• System Initialization - Initializes I2C module and sets INT pin as INPUT and RST pin as OUTPUT
• Application Initialization - Driver init and reset chip
• Application Task - (code snippet) - Reads the device temperature, daylight at LUX and logs data to USBUART every 1 sec

void applicationTask()
{
    mikrobus_logWrite(" - Device temperature : ", _LOG_TEXT);
    Temperature = ambient3_getDeviceTemperature();
    IntToStr(Temperature, demoText_Temp);
    mikrobus_logWrite(demoText_Temp, _LOG_LINE);

    mikrobus_logWrite(" - Light in LUX : ", _LOG_TEXT);
    dataLUX = ambient3_getDataInLUX();
    FloatToStr(dataLUX, demoText_dataLUX);
    mikrobus_logWrite(demoText_dataLUX, _LOG_LINE);
    
    Delay_ms(1000);
}

Other mikroE Libraries used in the example:

• I2C

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.