Library Description

The library covers all the necessary functions to control the Thermo Click board. 
Library performs the communication with the device via SPI driver by reading data from the MAX31855 sensor. A library has a function for measuring thermocouple temperature and converts to degree Celsius and function for checking the error: short-circuited to Vcc, short-circuited to GND or no connections.

Key functions:

• float thermo_getTemperature() - Get thermocouple temperature function.
• uint8_t thermo_checkFault()- Check fault states function.
• uint32_t thermo_readData() - Read all data from sensor function.

Examples description

The application is composed of three sections:

• System Initialization - Initializes GPIO, SPI, and LOG structures set CS pins as output.
• Application Initialization -  Initialization driver enable's - SPI start write log.
• Application Task - (code snippet) This is an example which demonstrates the use of Thermo Click board. The temperature measured by the thermocouple is converter by MAX31855 sensor on Thermo click board. Displayed temperature is in degree Celsius. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on usb uart changes for every 3 sec.

void applicationTask() 
{
    temperature = thermo_getTemperature();
    FloatToStr( temperature, logText );
    
    mikrobus_logWrite( " Temperature : ", _LOG_TEXT );
    mikrobus_logWrite( logText, _LOG_TEXT );
    mikrobus_logWrite( degCel, _LOG_LINE );
    mikrobus_logWrite( "---------------------------", _LOG_LINE );
    
    Delay_ms( 3000 );
}  

Additional Functions :

• void displayErrorMsg() - Check and displayed error messages.

Other mikroE Libraries used in the example:

• SPI
• UART
• Conversion

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