Library Description

The library covers all the necessary functions that enables the usage of the Vibra Sense 2 Click board™. It offers reading from output register, calculations that result in relatively accurate measurement of output voltage and the vibration level of the piezo element.

Key functions:

• uint16_t vibrasense2_read_data ( ); - Function is used to read raw data from MCP3221.
• uint16_t vibrasense2_read_voltage ( uint16_t v_ref ); - Function is used to calculate piezo voltage in millivolts.
• int8_t vibrasense2_vibration_level ( ); - Function is used to get vibration level.

Examples description

The application is composed of three sections :

• System Initialization - Initializes I2C module ans LOG structure.
• Application Initialization - Initalizes I2C driver and makes an initial log.
• Application Task - Demonstrates use of Vibra Sense 2 Click board™ by checking vibration levels and displaying changes via USART terminal.

void application_task ( )
{
    new_val = vibrasense2_vibration_level( );
    if ( new_val != old_val )
    {
        switch ( new_val )
        {
            case VIBRASENSE2_VIBRA_LVL_0:
            {
                mikrobus_logWrite( "No Vibration", _LOG_LINE );
                break;
            }
            case VIBRASENSE2_VIBRA_LVL_1:
            {
                mikrobus_logWrite( "Marginal Vibration", _LOG_LINE );
                break;
            }
            case VIBRASENSE2_VIBRA_LVL_2:
            {
                mikrobus_logWrite( "Slight Vibration", _LOG_LINE );
                break;
            }
            case VIBRASENSE2_VIBRA_LVL_3:
            {
                mikrobus_logWrite( "Enhanced Vibration", _LOG_LINE );
                break;
            }
            case VIBRASENSE2_VIBRA_LVL_4:
            {
                mikrobus_logWrite( "Moderate Vibration", _LOG_LINE );
                break;
            }
            case VIBRASENSE2_VIBRA_LVL_5:
            {
                mikrobus_logWrite( "High Vibration", _LOG_LINE );
                break;
            }
            case VIBRASENSE2_VIBRA_LVL_6:
            {
                mikrobus_logWrite( "Severe Vibration", _LOG_LINE );
                break;
            }
            default:
            {
                mikrobus_logWrite( "Error occured!", _LOG_LINE );
            }
        }
        old_val = new_val;
    }
}

Other mikroE Libraries used in the example:

• I2C
• UART

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.