adc28

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ADC 28 Click

ADC 28 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : Milan Ivancic
• Date : Apr 2026.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of the ADC 28 Click board by reading voltage levels from all 8 single-ended analog input channels (CH0-CH7) and displaying the results via UART.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.ADC28

Example Key Functions

• adc28_cfg_setup This function initializes Click configuration structure to initial values.

  void adc28_cfg_setup ( adc28_cfg_t *cfg );

• adc28_init This function initializes all necessary pins and peripherals used for this Click board.

  err_t adc28_init ( adc28_t *ctx, adc28_cfg_t *cfg );

• adc28_default_cfg This function executes a default configuration of ADC 28 Click board.

  err_t adc28_default_cfg ( adc28_t *ctx );

• adc28_read_raw_adc This function reads the RAW ADC measurement.

  err_t adc28_read_raw_adc ( adc28_t *ctx, uint8_t channel, uint16_t *raw_data );

• adc28_read_voltage This function reads the ADC result from the selected channel and converts it to a voltage level.

  err_t adc28_read_voltage ( adc28_t *ctx, uint8_t channel, float *voltage );

• adc28_get_alert_pin This function returns the logic state of the ALT (ALERT) pin.

  uint8_t adc28_get_alert_pin ( adc28_t *ctx );

Application Init

Initializes the driver and performs the Click default configuration.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  
    adc28_cfg_t adc28_cfg;  

    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );
 
    // Click initialization.
    adc28_cfg_setup( &adc28_cfg );
    ADC28_MAP_MIKROBUS( adc28_cfg, MIKROBUS_POSITION_ADC28 );
    if ( I2C_MASTER_ERROR == adc28_init( &adc28, &adc28_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( ADC28_ERROR == adc28_default_cfg ( &adc28 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Reads the voltage from each channel (CH0 to CH7) and displays the results on the USB UART once per second.

void application_task ( void ) 
{
    float voltage = 0;
 
    for ( uint8_t channel = ADC28_CHANNEL_0; channel <= ADC28_CHANNEL_7; channel++ )
    {
        if ( ADC28_OK == adc28_read_voltage( &adc28, channel, &voltage ) )
        {
            log_printf( &logger, " CH%u: %.3f V\r\n", ( uint16_t ) channel, voltage );
        }
    }
    log_printf( &logger, " -------------------\r\n" );
    Delay_ms( 1000 );
}

Note

The input voltage range on each channel is 0 V to 3.3 V. Do not apply voltages outside this range to the analog inputs.

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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