DAC 2 click

DAC 2 click represents a 16-bit digital-to-analog converter.

click Product page

Click library

• Author : Mihajlo Djordjevic
• Date : Dec 2019.
• Type : SPI type

Software Support

We provide a library for the Dac2 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Dac2 Click driver.

Standard key functions :

• Config Object Initialization function.

  void dac2_cfg_setup ( dac2_cfg_t *cfg );

• Initialization function.

  DAC2_RETVAL dac2_init ( dac2_t ctx, dac2_cfg_t cfg );

• Click Default Configuration function.

  void dac2_default_cfg ( dac2_t *ctx );

Example key functions :

• This function executes default configuration for LTC2601 click.

  void dac2_default_cfg ( dac2_t *ctx );

• This function required percentage value ( from 0% to 100% ) convert to digital input and transforms it to the output voltage from 0 to Vref [mV].

  void dac2_write_output_voltage_procentage ( dac2_t *ctx, uint8_t value_pct );

Examples Description

This example code presents the usage of DAC 2 Click, and digital-to-analog converter.

The demo application is composed of two sections :

Application Init

Application Init performs Logger and Click initialization.

{
    log_cfg_t log_cfg;
    dac2_cfg_t cfg;

    /** 
     * 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_printf( &logger, "--------------------------\r\n" );
    log_printf( &logger, "     Application  Init\r\n" );
    Delay_ms ( 1000 );

    //  Click initialization.

    dac2_cfg_setup( &cfg );
    DAC2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    dac2_init( &dac2, &cfg );

    log_printf( &logger, "--------------------------\r\n" );
    log_printf( &logger, " ----- DAC 2  Click ----- \r\n" );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 1000 );

    dac2_default_cfg( &dac2 );
    Delay_ms ( 1000 );

    log_printf( &logger, " -- Initialization done --\r\n" );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 1000 );
}

Application Task

This example of the DAC 2 communicates with MCU through the SPI communication, send digital input ( form 0 to 100 with step 1 ) and transforms it to the output voltage, ranging from 0 to Vref [mV].

void application_task ( void )
{
    uint16_t voltage_out;
    uint8_t value_pct;

    for ( value_pct = 0; value_pct <= 100; value_pct += 10 )
    {
        dac2_write_output_voltage_procentage( &dac2, value_pct );
        voltage_out = value_pct * 50;
        log_printf( &logger, "Voltage Output: %d mV\r\n", voltage_out );

        voltage_out = value_pct;
        log_printf( &logger, "Percentage Output: %d %%\r\n", voltage_out );

        log_printf( &logger, "--------------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

    log_printf( &logger, "###############################\r\n" );
    Delay_ms ( 1000 );
}  

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Dac2

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.