dac6

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DAC 6 Click

DAC 6 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.

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Click Library

• Author : MikroE Team
• Date : jul 2020.
• Type : SPI type

Software Support

Example Description

DAC 6 Click carries 12-bit buffered Digital-to-Analog Converter. It converts digital value to the corresponding voltage level using external voltage reference.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Dac6

Example Key Functions

• dac6_cfg_setup Config Object Initialization function.

void dac6_cfg_setup ( dac6_cfg_t *cfg );

• dac6_init Initialization function.

err_t dac6_init ( dac6_t *ctx, dac6_cfg_t *cfg );

• dac6_set_output Function is used to set operation mode output channel and level.

float dac6_set_output ( dac6_t *ctx );

• dac6_write_data Sends 16-bit data to the device's input shift register.

void dac6_write_data ( dac6_t *ctx, uint16_t wr_data );

Application Init

Initalizes SPI driver.

void application_init ( void )
{
    log_cfg_t log_cfg;
    dac6_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_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    dac6_cfg_setup( &cfg );
    DAC6_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    dac6_init( &dac6, &cfg );
}

Application Task

This example shows capabilities of DAC 6 Click by changeing output values from 0 to the maximum output range on all four channels. Output voltage is calculated by using the equation : Vout = Vrefin * (set_out / 4095).

void application_task ( void )
{
    for ( n_cnt = 0; n_cnt < 4096; n_cnt += 315 )
    {
        dac6.chan    = DAC6_CHANNEL_A;
        dac6.op_mod  = DAC6_WRITE_SPEC_UPDATE_OUTPUT;
        dac6.v_ref   = DAC6_V_REF_2048;
        dac6.set_out = n_cnt;
        
        v_out = dac6_set_output( &dac6 );
        
        log_printf( &logger, " Channel  A : VOUT ~ %.2f mV\r\n", v_out );
        log_printf( &logger, "--------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

    for ( n_cnt = 0; n_cnt < 4096; n_cnt += 315 )
    {
        dac6.chan    = DAC6_CHANNEL_B;
        dac6.op_mod  = DAC6_WRITE_SPEC_UPDATE_OUTPUT;
        dac6.v_ref   = DAC6_V_REF_2048;
        dac6.set_out = n_cnt;
        
        v_out = dac6_set_output( &dac6 );
        
        log_printf( &logger, " Channel  B : VOUT ~ %.2f mV\r\n", v_out );
        log_printf( &logger, "--------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }
    
    for ( n_cnt = 0; n_cnt < 4096; n_cnt += 315 )
    {
        dac6.chan    = DAC6_CHANNEL_C;
        dac6.op_mod  = DAC6_WRITE_SPEC_UPDATE_OUTPUT;
        dac6.v_ref   = DAC6_V_REF_2048;
        dac6.set_out = n_cnt;
        
        v_out = dac6_set_output( &dac6 );
        
        log_printf( &logger, " Channel  C : VOUT ~ %.2f mV\r\n", v_out );
        log_printf( &logger, "--------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

    for ( n_cnt = 0; n_cnt < 4096; n_cnt += 315 )
    {
        dac6.chan    = DAC6_CHANNEL_D;
        dac6.op_mod  = DAC6_WRITE_SPEC_UPDATE_OUTPUT;
        dac6.v_ref   = DAC6_V_REF_2048;
        dac6.set_out = n_cnt;
        
        v_out = dac6_set_output( &dac6 );
        
        log_printf( &logger, " Channel  D : VOUT ~ %.2f mV\r\n", v_out );
        log_printf( &logger, "--------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }
    
    Delay_ms ( 1000 );
}

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.

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