dac8

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DAC 8 Click

DAC 8 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 : I2C/SPI type

Software Support

Example Description

This 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.Dac8

Example Key Functions

• dac8_cfg_setup Config Object Initialization function.

void dac8_cfg_setup ( dac8_cfg_t *cfg );

• dac8_init Initialization function.

err_t dac8_init ( dac8_t *ctx, dac8_cfg_t *cfg );

• The function set configuration of the DAC8554, 16-bit, quad-channel, ultra-low glitch, voltage
• dac8_device_config output digital-to-analog converter on DAC 8 Click board.

void dac8_device_config ( dac8_t *ctx, dac8_cfg_data_t cfg_data );

• The function load DAC s are simultaneously updated with the contents of the corresponding data
• buffers. Used as a positive edge triggered timing signal for asynchronous DAC updates. Data
• dac8_load_dac buffers of all channels must be loaded with desired data before call Load DAC function.

void dac8_load_dac ( dac8_t *ctx );

• The function set Vref ( mV ) by write 12-bit to the DAC data register of the DAC60501, 16-Bit,
• 14-Bit, and 12-Bit, 1-LSB INL, Voltage-Output DACs
• dac8_set_vref With Precision Internal Reference on DAC 8 Click board.

err_t dac8_set_vref ( dac8_t *ctx, uint16_t vref_mv );

Application Init

Initialization driver enables - I2C. Configure DAC60501: executes call software reset, disable sync and internal reference and disable Power-down mode, the set reference voltage is internally divided by a factor of 2, amplifier for corresponding DAC has a gain of 2. Initialization driver enables - SPI, enable DAC8554, also write log.

void application_init ( void )
{
    log_cfg_t log_cfg;
    dac8_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.

    dac8_cfg_setup( &cfg );
    DAC8_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    
    dac8_init( &dac8, &cfg, DAC8_MASTER_I2C );

    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "  I2C driver init.   \r\n" );
    Delay_ms ( 100 );

    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "      DAC60501       \r\n" );
    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "     Soft reset      \r\n" );
    dac8_soft_reset( &dac8 );
    Delay_ms ( 100 );

    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "  Disable sync. mode \r\n" );
    dac8_enable_sync( &dac8, DAC8_SYNC_DISABLE );
    Delay_ms ( 100 );

    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "    Set config.:     \r\n" );
    log_printf( &logger, " Enable:             \r\n" );
    log_printf( &logger, " Internal reference  \r\n" );
    log_printf( &logger, " Disable:            \r\n" );
    log_printf( &logger, " Power-down mode     \r\n" );
    dac8_set_config( &dac8, DAC8_CONFIG_REF_PWDWN_ENABLE, DAC8_CONFIG_DAC_PWDWN_DISABLE );
    Delay_ms ( 100 );
    
    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "  Vref divided by 2  \r\n" );
    log_printf( &logger, "  Set DAC gain of 2  \r\n" );
    dac8_set_gain( &dac8, DAC8_GAIN_REF_DIV_2, DAC8_GAIN_BUFF_GAIN_1 );
    Delay_ms ( 100 );

    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, " Set Vref ~ 2500 mV  \r\n" );
    dac8_set_vref( &dac8, 2500 );
    Delay_ms ( 1000 );

    dac8_init( &dac8, &cfg, DAC8_MASTER_SPI );
    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "  SPI driver init.   \r\n" );
    Delay_ms ( 1000 );
    
    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "       DAC8554       \r\n" );
    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "    Enable DAC8554   \r\n" );
    dac8_device_enable( &dac8, DAC8_DAC8554_ENABLE );
    Delay_ms ( 100 );
}

Application Task

This is an example that demonstrates the use of the DAC 8 Click board. DAC 8 board changeing output values: Channel A ~ 2500 mV, Channel B ~ 1250 mV, Channel C ~ 625 mV, Channel D ~ 312 mV. All data logs write on USB uart changes every 5 sec.

void application_task ( void )
{
    log_printf( &logger, "---------------------\r\n" );
    
    cfg_dac.addr = DAC8_ADDR_DEFAULT;
    cfg_dac.ctrl_upd_an_out = DAC8_CTRL_UPD_AN_OUT_SINGLE_CH_STORE;
    cfg_dac.dac_sel = DAC8_DAC_SEL_CH_A;
    cfg_dac.pwr_mode = DAC8_PWR_MODE_POWER_UP;
    cfg_dac.dac_val = 0xFFFF;
    
    log_printf( &logger, " Channel A ~ 2500 mV \r\n" );
    dac8_device_config( &dac8, cfg_dac );
    dac8_load_dac(  &dac8 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    
    log_printf( &logger, "---------------------\r\n" );

    cfg_dac.addr = DAC8_ADDR_DEFAULT;
    cfg_dac.ctrl_upd_an_out = DAC8_CTRL_UPD_AN_OUT_SINGLE_CH_STORE;
    cfg_dac.dac_sel = DAC8_DAC_SEL_CH_B;
    cfg_dac.pwr_mode = DAC8_PWR_MODE_POWER_UP;
    cfg_dac.dac_val = 0x7FFF;

    log_printf( &logger, " Channel B ~ 1250 mV \r\n" );
    dac8_device_config(  &dac8, cfg_dac );
    dac8_load_dac( &dac8 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    
    log_printf( &logger, "---------------------\r\n" );
    
    cfg_dac.addr = DAC8_ADDR_DEFAULT;
    cfg_dac.ctrl_upd_an_out = DAC8_CTRL_UPD_AN_OUT_SINGLE_CH_STORE;
    cfg_dac.dac_sel = DAC8_DAC_SEL_CH_C;
    cfg_dac.pwr_mode = DAC8_PWR_MODE_POWER_UP;
    cfg_dac.dac_val = 0x3FFF;

    log_printf( &logger, " Channel C ~  625 mV \r\n" );
    dac8_device_config(  &dac8, cfg_dac );
    dac8_load_dac( &dac8 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    
    log_printf( &logger, "---------------------\r\n" );

    cfg_dac.addr = DAC8_ADDR_DEFAULT;
    cfg_dac.ctrl_upd_an_out = DAC8_CTRL_UPD_AN_OUT_SINGLE_CH_STORE;
    cfg_dac.dac_sel = DAC8_DAC_SEL_CH_D;
    cfg_dac.pwr_mode = DAC8_PWR_MODE_POWER_UP;
    cfg_dac.dac_val = 0x1FFF;

    log_printf( &logger, " Channel D ~  312 mV\r\n" );
    dac8_device_config(  &dac8, cfg_dac );
    dac8_load_dac(  &dac8 );
    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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