DAC 10 Click

DAC 10 Click is a compact add-on board that contains a fully-featured, highly accurate digital-to-analog converter. This board features the DAC53401, a 10-bit voltage-output smart digital-to-analog converter from Texas Instruments.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Jun 2021.
• Type : I2C type

Software Support

We provide a library for the DAC10 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 DAC10 Click driver.

Standard key functions :

• dac10_cfg_setup Config Object Initialization function.

  void dac10_cfg_setup ( dac10_cfg_t *cfg );

• dac10_init Initialization function.

  err_t dac10_init ( dac10_t *ctx, dac10_cfg_t *cfg );

Example key functions :

• dac10_check_device_id This function checks the communication by reading and verifying the device ID.

  err_t dac10_check_device_id ( dac10_t *ctx );

• dac10_enable_dac This function enables the DAC output.

  err_t dac10_enable_dac ( dac10_t *ctx );

• dac10_set_output_voltage This function sets the output voltage depending on the vref value defined by the VCC SEL on-board jumper. VREF and Voltage values can be either in Volts or Milivolts.

  err_t dac10_set_output_voltage ( dac10_t *ctx, float vref, float voltage );

Example Description

This example demonstrates the use of DAC 10 Click board.

The demo application is composed of two sections :

Application Init

Initializes the driver, checks the communication by reading and verifying the device ID, and enables the DAC output.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    dac10_cfg_t dac10_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 );
    Delay_ms ( 100 );
    log_info( &logger, " Application Init " );

    // Click initialization.
    dac10_cfg_setup( &dac10_cfg );
    DAC10_MAP_MIKROBUS( dac10_cfg, MIKROBUS_1 );
    err_t init_flag = dac10_init( &dac10, &dac10_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    if ( DAC10_ERROR == dac10_check_device_id ( &dac10 ) ) 
    {
        log_error( &logger, " Check Device ID Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    dac10_enable_dac( &dac10 );
    Delay_ms ( 100 );
    log_info( &logger, " Application Task " );
}

Application Task

Changes the output voltage every 2 seconds and logs the voltage value on the USB UART. It will go through the entire voltage range taking into account the number of steps which is defined below.

void application_task ( void )
{
    float step = REFERENCE_VOLTAGE / NUMBER_OF_STEPS;
    float output_voltage = step;
    uint8_t cnt = 0;
    while ( cnt < NUMBER_OF_STEPS )
    {
        dac10_set_output_voltage ( &dac10, REFERENCE_VOLTAGE, output_voltage );
        log_printf( &logger, " DAC output voltage set to %.2f V\r\n", output_voltage );
        output_voltage += step;
        cnt++;
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }
}

Note

Measure the voltage at VCC_SEL jumper and adjust the reference voltage value below for better accuracy.

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.DAC10

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.