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mikroSDK Library

DAC 11 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.16

mikroSDK Library: 2.0.0.0

Category: DAC

Downloaded: 343 times

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License: MIT license  

DAC 11 Click is a compact add-on board that contains a highly accurate digital-to-analog converter. This board features the DAC128S085, a general-purpose OCTAL 12-bit analog voltage-output DAC from Texas Instruments.

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mikroSDK Library Blog


DAC 11 Click

DAC 11 Click is a compact add-on board that contains a highly accurate digital-to-analog converter. This board features the DAC128S085, a general-purpose OCTAL 12-bit analog voltage-output DAC from Texas Instruments.

dac11_click.png

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Jul 2021.
  • Type : SPI type

Software Support

We provide a library for the DAC11 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 DAC11 Click driver.

Standard key functions :

  • dac11_cfg_setup Config Object Initialization function.

    void dac11_cfg_setup ( dac11_cfg_t *cfg );
  • dac11_init Initialization function.

    err_t dac11_init ( dac11_t *ctx, dac11_cfg_t *cfg );
  • dac11_default_cfg Click Default Configuration function.

    err_t dac11_default_cfg ( dac11_t *ctx );

Example key functions :

  • dac11_write_control_reg This function writes data to a single control register by using SPI serial interface.

    err_t dac11_write_control_reg( dac11_t *ctx, uint8_t cmd, uint16_t data_in );
  • dac11_set_all_ch_voltage This function sets the output voltage of all channels depending on the vref value defined by the VCC SEL on-board jumper. The VREF and Voltage values can be either in Volts or Milivolts.

    err_t dac11_set_all_ch_voltage( dac11_t *ctx, float vref, float voltage );
  • dac11_set_specific_ch_voltage This function sets the output voltage of the specific channels depending on the vref value defined by the VCC SEL on-board jumper. The VREF and Voltage values can be either in Volts or Milivolts.

    err_t dac11_set_specific_ch_voltage( dac11_t *ctx, uint8_t channel, float vref, float voltage );

Example Description

This example demonstrates the use of DAC 11 Click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and executes the Click default configuration which sets the WRM mode and disables all outputs.


void application_init ( void )
{
    log_cfg_t log_cfg;      /**< Logger config object. */
    dac11_cfg_t dac11_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.

    dac11_cfg_setup( &dac11_cfg );
    DAC11_MAP_MIKROBUS( dac11_cfg, MIKROBUS_1 );
    err_t init_flag  = dac11_init( &dac11, &dac11_cfg );
    if ( SPI_MASTER_ERROR == init_flag )
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    dac11_default_cfg ( &dac11 );
    log_info( &logger, " Application Task " );
}

Application Task

Changes the output voltage of all channels 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 )
    {
        dac11_set_all_ch_voltage ( &dac11, REFERENCE_VOLTAGE, output_voltage );
        log_printf( &logger, " All channels 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.DAC11

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. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.


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