dac  2.0.0.0
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DAC click

DAC click is an accessory board in mikroBUS form factor. It includes a 12-bit Digital-to-Analog Converter MCP4921 that features an optional 2x buffered output and SPI interface.

click Product page


Click library

Software Support

We provide a library for the Dac 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 Dac Click driver.

Standard key functions :

Example key functions :

Examples Description

This demo example sends digital signal to the outputs and converts it to analog.

The demo application is composed of two sections :

Application Init

Initializes driver, SPI communication and LOG.

void application_init ( void )
{
log_cfg_t log_cfg;
dac_cfg_t cfg;
// Logger initialization.
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_printf( &logger, "---- Application Init ----\r\n" );
// Click initialization.
dac_cfg_setup( &cfg );
DAC_MAP_MIKROBUS( cfg, MIKROBUS_1 );
dac_init( &dac, &cfg );
}

Application Task

Sends different values( form 0 to 4095 with step 1000 ) to output and prints expected measurement.

void application_task ( void )
{
for ( dac_val = 0; dac_val <= DAC_RESOLUTION; dac_val += DAC_STEP_VALUE )
{
dac_set_voltage( &dac, dac_val );
dac_val *= DAC_CALIB_VAL_1;
dac_val /= DAC_CALIB_VAL_2;
log_printf( &logger, " Current DAC Value: %d mV \r\n", dac_val );
log_printf( &logger, "----------------------------------\r\n" );
Delay_ms( 2000 );
}
}

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:

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.