Library Description

Library holds function that chechs the state of the "Alarm" pin.

Key functions:

• uint8_t thermo19_alarm_chk ( ); - Function is used to check if an Alarm has occured.

Examples description

The application is composed of three sections :

• System Initialization - Initializes GPIO and LOG structures , and sets INT pin as input.
• Application Initialization - Initalizes GPIO driver, applies default settings via one wire communication and start to write log.
• Application Task - This example shows capabilities of Thermo 19 click by measuring temperature and displaying temperature in degrees Celsius via USART terminal.

void application_task ( )
{
    temperature = thermo19_get_temperature( );
    FloatToStr( temperature, log_txt );
    Ltrim( log_txt );
    mikrobus_logWrite( " Temperature : ", _LOG_TEXT );
    mikrobus_logWrite( log_txt, _LOG_TEXT );
    mikrobus_logWrite( deg_cel, _LOG_LINE );
}

Additional Functions :

• void thermo19_one_wire_init ( ) - Function initialises one wire communication.
• void thermo19_rom_skip ( ) - Function sends skip ROM command.
• float thermo19_get_temperature ( ) - Functions reads, calculates and returns temperature, and the device's status.
• void thermo19_dev_setup ( uint8_t dev_cfg, float trsh_h, float trsh_l ) - Functions sets up the configuration (uint8_t dev_cfg) and high (float trsh_h) and low (float trsh_l) alarm thresholds.

Other mikroE Libraries used in the example:

• One Wire
• 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.