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mikroSDK Library

ADC 26 Click

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Author: MIKROE

Last Updated: 2024-12-18

Package Version: 2.1.0.1

mikroSDK Library: 2.0.0.0

Category: ADC

Downloaded: 63 times

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License: MIT license  

ADC 26 Click is a compact add-on board for precise analog-to-digital signal conversion. This board features the ADS1015L, a low-power 12-bit ADC with an I2C-compatible interface from Texas Instruments. The ADS1015L features a ΔΣ ADC core with an internal voltage reference, programmable gain amplifier (PGA), and digital comparator, capable of measuring differential signals with a flexible input range from ±0.256V to ±6.144V at up to 3300 samples per second (SPS). It supports single-shot and continuous-conversion modes, offering both energy efficiency and real-time performance.

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mikroSDK Library Blog


ADC 26 Click

ADC 26 Click is a compact add-on board for precise analog-to-digital signal conversion. This board features the ADS1015L, a low-power 12-bit ADC with an I2C-compatible interface from Texas Instruments. The ADS1015L features a ΔΣ ADC core with an internal voltage reference, programmable gain amplifier (PGA), and digital comparator, capable of measuring differential signals with a flexible input range from ±0.256V to ±6.144V at up to 3300 samples per second (SPS). It supports single-shot and continuous-conversion modes, offering both energy efficiency and real-time performance.

adc26_click.png

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Sep 2024.
  • Type : I2C type

Software Support

We provide a library for the ADC 26 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for ADC 26 Click driver.

Standard key functions :

  • adc26_cfg_setup Config Object Initialization function.

    void adc26_cfg_setup ( adc26_cfg_t *cfg );
  • adc26_init Initialization function.

    err_t adc26_init ( adc26_t *ctx, adc26_cfg_t *cfg );
  • adc26_default_cfg Click Default Configuration function.

    err_t adc26_default_cfg ( adc26_t *ctx );

Example key functions :

  • adc26_start_conversion This function starts a single-shot conversion for the selected MUX channel and gain level (full-scale range).

    err_t adc26_start_conversion ( adc26_t *ctx, uint8_t mux, uint8_t pga );
  • adc26_get_alert_pin This function returns the ALERT (data ready) pin logic state.

    uint8_t adc26_get_alert_pin ( adc26_t *ctx );
  • adc26_read_voltage This function reads the RAW ADC measurement and converts it to a voltage level.

    err_t adc26_read_voltage ( adc26_t *ctx, float *voltage );

Example Description

This example demonstrates the use of ADC 26 Click board by reading and displaying the voltage levels from IN0-IN1 differential and IN2-IN3 single-ended analog input channels.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the Click default configuration.


void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    adc26_cfg_t adc26_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.
    adc26_cfg_setup( &adc26_cfg );
    ADC26_MAP_MIKROBUS( adc26_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == adc26_init( &adc26, &adc26_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( ADC26_ERROR == adc26_default_cfg ( &adc26 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

Application Task

Reads the voltage levels from IN0-IN1 differential (+/- 2.048V) and IN2-IN3 single-ended (+/- 4.096V) analog input channels and displays the results on the USB UART once per second approximately.

void application_task ( void )
{
    float voltage = 0;
    if ( ADC26_OK == adc26_start_conversion ( &adc26, ADC26_MUX_P_AIN0_N_AIN1, ADC26_PGA_2_048V ) )
    {
        while ( adc26_get_alert_pin ( &adc26 ) ); // Waits for a data ready indication

        if ( ADC26_OK == adc26_read_voltage ( &adc26, &voltage ) )
        {
            log_printf ( &logger, " Voltage between IN0[P] and IN1[N]: %.3f V\r\n", voltage );
        }
    }
    if ( ADC26_OK == adc26_start_conversion ( &adc26, ADC26_MUX_P_AIN2_N_GND, ADC26_PGA_4_096V ) )
    {
        while ( adc26_get_alert_pin ( &adc26 ) ); // Waits for a data ready indication

        if ( ADC26_OK == adc26_read_voltage ( &adc26, &voltage ) )
        {
            log_printf ( &logger, " Voltage between IN2 and GND: %.3f V\r\n", voltage );
        }
    }
    if ( ADC26_OK == adc26_start_conversion ( &adc26, ADC26_MUX_P_AIN3_N_GND, ADC26_PGA_4_096V ) )
    {
        while ( adc26_get_alert_pin ( &adc26 ) ); // Waits for a data ready indication

        if ( ADC26_OK == adc26_read_voltage ( &adc26, &voltage ) )
        {
            log_printf ( &logger, " Voltage between IN3 and GND: %.3f V\r\n\n", voltage );
        }
    }
    Delay_ms ( 1000 );
}

Note

Do not apply more than VCC + 0.3 V to the analog inputs of the device.

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.ADC26

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. UART terminal is available in all MikroElektronika compilers.


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