Library Description

The library initializes and defines the I2C bus driver and drivers that offer a choice for writing data in register and read data form register. The library includes function for read Temperature and Relative Huminidy data and function for read device ID and Manifactures ID. The user also has the function for configuration chip for measurement and read Interrupt (INT pin) state.

Key functions:

• float temphum12_getTemperature(uint8_t tempIn) - Temperature data
• float temphum12_getHumidity() - Relative Huminidy data

Examples description

The application is composed of the three sections :

• System Initialization - Initialization I2C module and sets INT pin as INPUT.
• Application Initialization - Initializes driver init, test comunication and configuration device for measurement.
• Application Task - Reads Temperature and Humidity data and this data logs to the USBUART every 1 sec.

void applicationTask()
{
    float Temperature;
    float Humidity;
    char demoText[ 50 ] = {0};
    
   Temperature = temphum12_getTemperature(_TEMPHUM12_TEMP_IN_CELSIUS);

    FloatToStr(Temperature, demoText);
    mikrobus_logWrite(" Temperature : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_LINE);
    Delay_1sec();
    
    Humidity = temphum12_getHumidity();

    FloatToStr(Humidity, demoText);
    mikrobus_logWrite(" Humidity : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_LINE);
    
    mikrobus_logWrite("-------------------------", _LOG_LINE);
    Delay_1sec();
}

Other mikroE Libraries used in the example:

• I2C
• UART
• Conversions

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.