Library Description

The library initializes GPIO interface for the desired mikrobus selection. For more details check documentation.

Key functions:

• void pot_gpioDriverInit( T_POT_P gpioObj ) - Function initializes GPIO driver for the desired mikrobus.

Examples description

The application is composed of the three sections :

• System Initialization - Initializes peripherals and pins.
• Application Initialization - Initializes GPIO interface and ADC.
• Application Task - (code snippet) - Makes the averaged results by using the desired number of samples of AD conversion. The averaged results will be calculated to millivolts [mV] and sent to the uart terminal. Note : The AD conversion will be performed on the analog (AN) pin on the mikrobus 1.

void applicationTask()
{
    for (nSamples = 0; nSamples < N_SAMPLES; nSamples++)
    {
        adcRead = ADC_Get_Sample( 0 );
        
        if (nSamples == 0)
        {
            adcMax = adcRead;
            adcMin = adcRead;
        }
        if (adcRead > adcMax)
        {
            adcMax = adcRead;
        }
        else if (adcRead < adcMin)
        {
            adcMin = adcRead;
        }
        
        Delay_ms( 1 );
    }

    adcAvrg = adcMax;
    adcAvrg += adcMin;
    adcAvrg /= 2;
    adcAvrg /= ADC_12BIT_RESOL;
    adcAvrg *= ADC_V_REF_MV;
    adcRead = adcAvrg;
    
    WordToStr( adcRead, text );
    mikrobus_logWrite( "** AN : ", _LOG_TEXT );
    mikrobus_logWrite( text, _LOG_TEXT );
    mikrobus_logWrite( " mV **", _LOG_LINE );
    
    Delay_ms( 100 );
}

Other mikroE Libraries used in the example:

• ADC
• Conversions
• 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.