Library Description

The library initializes and defines the I2C bus driver and drivers that offer a choice for writing and reading
data in and from registers. The library includes functions for reading SI and PGA, check status, earthquake, collapse, work mode, processing notification, and shut off. The user can also run and read self-diagnostics, acquisition offset, clear Memory and reset the device. Library also has generic read/write functions for additional read and write operations.

Key functions:

• uint8_t earthquake_readStatus() - Read status function.
• uint16_t earthquake_readSI()- Read SI function.
• uint16_t earthquake_readPGA() -Read PGA function.

Examples description

The application is composed of three sections :

• System Initialization - Initializes I2C module, LOG, and GPIO structure sets INT and PWM pins as input and sets CS pin as output.
• Application Initialization -  Initalizes of I2C driver and makes initial log.
• Application Task - This is an examples that shows most of the functions that Earthquake click has. Results are being sent to the Usart Terminal where you can track their changes.  

void applicationTask()
{
    if ( earthquake_procNotify() )
    {
        mikrobus_logWrite( " Earthquake detected! ", _LOG_LINE );
        mikrobus_logWrite( "------------------------", _LOG_LINE );
        Delay_ms ( 2000 );
 
        for ( cnt = 20; cnt > 0; cnt-- )
        {
            mikrobus_logWrite( " Status : ", _LOG_TEXT );
            displayStatus( earthquake_readStatus() );
            mikrobus_logWrite( " Max SI : ", _LOG_TEXT );
            readData = earthquake_readSI();
            IntToStr( readData, txtLog );
            ltrim( txtLog );
            mikrobus_logWrite( txtLog, _LOG_LINE );
            mikrobus_logWrite( "------------------------", _LOG_LINE );
            Delay_ms( 5000 );
        }

        earthquake_clearMememory();
        mikrobus_logWrite( " Afterquake processing ", _LOG_LINE );
        mikrobus_logWrite( " please wait... ", _LOG_LINE );
        Delay_ms( 20000 );
        
        mikrobus_logWrite( "------------------------", _LOG_LINE );
        mikrobus_logWrite( " Waiting for a quake... ", _LOG_LINE );
        mikrobus_logWrite( "------------------------", _LOG_LINE );
    }
}

Additional Functions :

• void displayStatus( uint8_t statusData ) - Display status log on USART terminal.

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