Library Description

The library contains basic function for sets frequency and gets interrupt pin state.

Key functions:

• uint8_t antopwm2_get_int_state ( void ) - Gets interrupt pin state
• void antopwm2_set_freq ( uint8_t freq ) - Set Frequency

Examples description

The application is composed of three sections :

• System Initialization - Initializes the INT pin required to measure.
• Application Initialization - Initializes the driver, timer on 1us and frequency
• Application Initialization - Initializes the driver, timer on 1us and frequency

void application_task ( )
{
    uint8_t drdy;
    char rsp_data;

    drdy = UART_Rdy_Ptr( );

    if ( drdy != 0 )
    {
        rsp_data = UART_Rd_Ptr( );

        switch ( rsp_data )
        {
            case '+' :
            {
                // Reset flags
                period_flag = 0;
                idle_high_cnt = 0;
                idle_low_cnt = 0;
                period_cnt = 0;
                    
                while ( period_flag != 1 );
                
                idle_high_cnt /= 10;
                idle_low_cnt /= 10;

                if ( ( idle_high_cnt != 0 ) && ( idle_high_cnt != 0 ) )
                {
                    tmp_value = calc_percentage( idle_high_cnt );
                    FloatToStr( tmp_value, demo_text );
                    mikrobus_logWrite( "> Idle [HIGH]: ~ ", _LOG_TEXT );
                    mikrobus_logWrite( demo_text, _LOG_TEXT );
                    mikrobus_logWrite( " %", _LOG_LINE );

                    tmp_value = calc_percentage( idle_low_cnt );
                    FloatToStr( tmp_value, demo_text );
                    mikrobus_logWrite( "> Idle [LOW]: ~ ", _LOG_TEXT );
                    mikrobus_logWrite( demo_text, _LOG_TEXT );
                    mikrobus_logWrite( " %", _LOG_LINE );

                    tmp_value = calc_voltage( idle_high_cnt );
                    FloatToStr( tmp_value , demo_text );
                    mikrobus_logWrite( "> Voltage: ~ ", _LOG_TEXT );
                    mikrobus_logWrite( demo_text, _LOG_TEXT );
                    mikrobus_logWrite( " mV", _LOG_LINE );

                    mikrobus_logWrite( "--------------------------------", _LOG_LINE );
                }
                mikrobus_logWrite( "--- Please, enter the command [ + ].", _LOG_LINE );
                break;
            }
        }
    }
}

Additional Functions :

• calc_percentage( ) - Represented data as a percentage
• calc_voltage( ) - Voltage calculation
• timer_init_1us( ) - Sets timer on 1us

Other mikroE Libraries used in the example:

• I2C Library
• Conersions 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.