adc24

---

ADC 24 Click

ADC 24 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.

---

Click Library

• Author : Nenad Filipovic
• Date : Dec 2023.
• Type : SPI type

Software Support

Example Description

This example demonstrates the use of the ADC 24 Click board by reading and writing data by using the SPI serial interface and reading results of AD conversion.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.ADC24

Example Key Functions

• adc24_cfg_setup Config Object Initialization function.

void adc24_cfg_setup ( adc24_cfg_t *cfg );

• adc24_init Initialization function.

err_t adc24_init ( adc24_t *ctx, adc24_cfg_t *cfg );

• adc24_get_voltage This function reads the results of 12-bit ADC raw data and converts them to proportional voltage levels by using the SPI serial interface.

err_t adc24_get_voltage ( adc24_t *ctx, adc24_ctrl_t ctrl, uint8_t *in_pos, float *voltage );

• adc24_get_adc_data This function reads a conversion result and selected channel by using the SPI serial interface.

err_t adc24_get_adc_data ( adc24_t *ctx, adc24_ctrl_t ctrl, uint8_t *in_pos, uint16_t *adc_data );

Application Init

Initialization of SPI module and log UART.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    adc24_cfg_t adc24_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    adc24_cfg_setup( &adc24_cfg );
    ADC24_MAP_MIKROBUS( adc24_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == adc24_init( &adc24, &adc24_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    ctrl.ch_sel = ADC24_CH_SEL_IN_0;
    ctrl.pm = ADC24_PM_NORMAL;
    ctrl.seq_shadow = ADC24_SEQ_SHADOW_AN_INPUT;
    ctrl.weak = ADC24_WEAK_DOUT_THREE_STATE;
    ctrl.range = ADC24_RANGE_VREF_5V;
    ctrl.coding = ADC24_CODING_BIN;

    log_info( &logger, " Application Task " );
    log_printf( &logger, "_____________\r\n" );
}

Application Task

The demo application reads the voltage levels from all 15 analog input channels and displays the results. Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void )
{
    uint8_t ch_pos = 0;
    float voltage = 0;
    for ( uint8_t n_cnt = ADC24_CH_SEL_IN_0; n_cnt <= ADC24_CH_SEL_IN_15; n_cnt++ )
    {
        ctrl.ch_sel = n_cnt;
        if ( ADC24_OK == adc24_get_voltage( &adc24, ctrl, &ch_pos, &voltage ) )
        {
            log_printf( &logger, " IN%u : %.3f V\r\n", ( uint16_t ) ch_pos, voltage );
        }
        Delay_ms ( 100 );  
    }
    log_printf( &logger, "_____________\r\n" );
    Delay_ms ( 1000 );
}

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.

---