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ADC 12 Click

ADC 12 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 : Stefan Filipovic
  • Date : Jun 2021.
  • Type : I2C type

Software Support

Example Description

This example demonstrates the use of ADC 12 Click board.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.ADC12

Example Key Functions

  • adc12_cfg_setup Config Object Initialization function.
void adc12_cfg_setup ( adc12_cfg_t *cfg );
  • adc12_init Initialization function.
err_t adc12_init ( adc12_t *ctx, adc12_cfg_t *cfg );
  • adc12_read_voltage This function reads the voltage in milivolts from the desired channel.
err_t adc12_read_voltage ( adc12_t *ctx, uint8_t ch, uint16_t vref, float *data_out );
  • adc12_read_raw_data This function reads raw 12-bit ADC data from the desired channel.
err_t adc12_read_raw_data ( adc12_t *ctx, uint8_t ch, uint16_t *data_out );
  • adc12_set_sd_mode This function sets the input mode.
void adc12_set_sd_mode ( adc12_t *ctx, uint8_t sd_mode );

Application Init

Initializes the driver and sets the input and power-down modes.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    adc12_cfg_t adc12_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.

    adc12_cfg_setup( &adc12_cfg );
    ADC12_MAP_MIKROBUS( adc12_cfg, MIKROBUS_1 );
    err_t init_flag = adc12_init( &adc12, &adc12_cfg );
    if ( init_flag == I2C_MASTER_ERROR ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    adc12_set_sd_mode ( &adc12, ADC12_CMD_SD_SINGLE_END );
    adc12_set_pd_mode( &adc12, ADC12_CMD_PD_IRON_ADON );
    log_info( &logger, " Application Task " );
}

Application Task

Reads the RAW ADC data and converts it to voltage in milivolts and displays both values on the USB UART every second.

void application_task ( void )
{
    uint16_t raw_adc;
    float voltage;

    adc12_read_raw_data ( &adc12, ADC12_SINGLE_END_CH0, &raw_adc );
    adc12_read_voltage ( &adc12, ADC12_SINGLE_END_CH0, ADC12_INTERNAL_VREF, &voltage );
    
    log_printf( &logger, " RAW ADC: %u \r\n", raw_adc );
    log_printf( &logger, " Voltage from Channel 0: %.2f mV \r\n", voltage );
    log_printf( &logger, " ---------------------------\r\n" );
    Delay_ms ( 1000 );
}

Note

With internal reference voltage set the Click measures up to 2500 mV.

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.