Library Description

The library contains basic functions for working with Thermostat 4 click.

Key functions:

• void thermostat4_relay_ctrl( uint8_t state ) - Relay Control
• uint8_t thermostat4_hot_alert_state( void ) - Hot temperature ALERT
• uint8_t thermostat4_warm_alert_state( void ) - Warm temperature ALERT

Examples description

The application is composed of three sections :

• System Initialization - Initializes SPI module and all necessary GPIO pins
• Application Initialization - Initializes Driver init, Relay test and sets hysteresis on the WARM channel ( channel B ), after thet starts uploading new data.
• Application Task - Reads Alert on the WARM and HOT channel.
• note: The user has the option of adjusting the hysteresis for channel B via the SPI module while for channel A it is adjusted via the potentiometer.

void application_task ( )
{
    if ( thermostat4_hot_alert_state( ) == THERMOSTAT4_HOT_ALERT )
    {
        mikrobus_logWrite( ">> H-O-T  A-L-E-R-T <<", _LOG_LINE );
        thermostat4_relay_ctrl( THERMOSTAT4_RELAY_ON );
    }
    if ( thermostat4_warm_alert_state( ) == THERMOSTAT4_WARM_ALERT )
    {
        mikrobus_logWrite( ">> W-A-R-M  A-L-E-R-T <<", _LOG_LINE );
        thermostat4_relay_ctrl( THERMOSTAT4_RELAY_ON );
    }

    mikrobus_logWrite( ">> T-E-M-P-E-R-A-T-U-R-E  O-K <<", _LOG_LINE );
    thermostat4_relay_ctrl( THERMOSTAT4_RELAY_OFF );
    Delay_ms( 200 );
}

Other mikroE Libraries used in the example:

• SPI Library
• UART Library

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.