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mikroSDK Library

DAC 8 click

Rating:

5

Author: MIKROE

Last Updated: 2020-08-28

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: DAC

Downloaded: 2222 times

Not followed.

License: MIT license  

DAC 8 Click is a compact add-on board that contains a fully-featured, general-purpose voltage-output digital-to-analog converter. This board features the DAC8554IPWR, a 16-bit QUAD channel voltage-output digital to analog converter from Texas Instruments.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

DAC 8 Click

DAC 8 Click

Native view of the DAC 8 Click board.

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DAC 8 Click

DAC 8 Click

Front and back view of the DAC 8 Click board.

View full image

Library Description

The library covers all the necessary functions to control the DAC 8 Click board. A library performs the communication with the DAC60501 via I2C and communication with DAC8554 the SPI interface.

Key functions:

  • void dac8_generic_i2c_write ( uint8_t reg, uint16_t tx_data ) - Generic I2C ( DAC60501 ) write function.
  • uint16_t dac8_generic_i2c_read ( uint8_t reg ) - Generic I2C ( DAC60501 ) read function.
  • void dac8_generic_spi_write ( uint32_t tx_data ) - Generic SPI ( DAC8554 ) write function.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes I2C and SPI and start to write log.
  • Application Initialization - 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.
  • Application Task - (code snippet) 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 ( )
{
    mikrobus_logWrite( "---------------------", _LOG_LINE );
    
    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;
    
    mikrobus_logWrite( " Channel A ~ 2500 mV ", _LOG_LINE );
    dac8_device_config( cfg_dac );
    dac8_load_dac( );
    Delay_ms( 5000 );
    
    mikrobus_logWrite( "---------------------", _LOG_LINE );

    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;

    mikrobus_logWrite( " Channel B ~ 1250 mV ", _LOG_LINE );
    dac8_device_config( cfg_dac );
    dac8_load_dac( );
    Delay_ms( 5000 );
    
    mikrobus_logWrite( "---------------------", _LOG_LINE );
    
    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;

    mikrobus_logWrite( " Channel C ~  625 mV ", _LOG_LINE );
    dac8_device_config( cfg_dac );
    dac8_load_dac( );
    Delay_ms( 5000 );
    
    mikrobus_logWrite( "---------------------", _LOG_LINE );

    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;

    mikrobus_logWrite( " Channel D ~  312 mV", _LOG_LINE );
    dac8_device_config( cfg_dac );
    dac8_load_dac( );
    Delay_ms( 5000 );
}

Other mikroE Libraries used in the example:

  • I2C
  • SPI
  • UART

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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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