adac2  2.1.0.0
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ADAC 2 click

ADAC 2 Click is a compact add-on board providing the ADC/DAC combo solution. This board features the MAX22000, a 24-bit ADC, an 18-bit DAC, and an analog front-end (AFE) from Analog Devices. It allows users to create a software-configurable (SPI interface) input/output that supports all standard industrial analog interfaces: -10V to +10V analog input or output, -20mA to +20mA analog input or output, as well as an RTD or thermocouple input for temperature measurement.

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Click library

  • Author : Stefan Filipovic
  • Date : Sep 2022.
  • Type : SPI type

Software Support

We provide a library for the ADAC 2 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for ADAC 2 Click driver.

Standard key functions :

Example key functions :

  • adac2_set_active_ain_channel This function sets the active analog input channel.
    err_t adac2_set_active_ain_channel ( adac2_t *ctx, uint8_t channel );
  • adac2_read_voltage This function reads RAW ADC value of previous conversion and converts it to voltage.
    err_t adac2_read_voltage ( adac2_t *ctx, float fsr, float *voltage );
  • adac2_write_dac This function sets the analog output by writing to the AO_DATA_WR register.
    err_t adac2_write_dac ( adac2_t *ctx, int32_t dac );

Example Description

This example demonstrates the use of ADAC 2 click board by setting the DAC output (CIO)

and reading the ADC results from a single-ended channel (AI4) and from a differential channel (AI5+, AI6-) as well as toggling all GPIO pins.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the click default configuration which enables

DAC voltage output, sets the analog input mode to single-ended for AI4 and differential (AI5+, AI6-), and enables all GPIOs as output.

void application_init ( void )
{
log_cfg_t log_cfg;
adac2_cfg_t adac2_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
adac2_cfg_setup( &adac2_cfg );
ADAC2_MAP_MIKROBUS( adac2_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == adac2_init( &adac2, &adac2_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( ADAC2_ERROR == adac2_default_cfg ( &adac2 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Reads the ADC results from a single-ended (AI4) and a differential (AI5+, AI6-) channels,

then sets the raw DAC output increasing the value by 10000 after each iteration, and toggles all GPIO pins. The results will be displayed on the USB UART approximately once per second.

void application_task ( void )
{
float voltage;
{
// Waits for the availability of the conversion result
while ( adac2_get_rdy_pin ( &adac2 ) );
{
log_printf ( &logger, " Channel AI4 single-ended: %.2f V\r\n", voltage );
}
}
{
// Waits for the availability of the conversion result
while ( adac2_get_rdy_pin ( &adac2 ) );
if ( ADAC2_OK == adac2_read_voltage ( &adac2, ADAC2_FULL_SCALE_RANGE_25V, &voltage ) )
{
log_printf ( &logger, " Channel AI5-AI6 differential: %.2f V\r\n", voltage );
}
}
static int32_t dac = ADAC2_DAC_MIN_VALUE;
if ( ADAC2_OK == adac2_write_dac ( &adac2, dac ) )
{
log_printf ( &logger, " DAC: %ld\r\n", dac );
dac += 5000;
if ( dac > ADAC2_DAC_MAX_VALUE )
{
}
}
uint32_t gpio_data;
if ( ADAC2_OK == adac2_read_register ( &adac2, ADAC2_REG_GEN_GPIO_CTRL, &gpio_data ) )
{
gpio_data ^= ADAC2_GPIO_ALL_MASK;
if ( ADAC2_OK == adac2_write_register ( &adac2, ADAC2_REG_GEN_GPIO_CTRL, gpio_data ) )
{
log_printf ( &logger, " GPIO: 0x%.2X\r\n\n", ( uint16_t ) ( gpio_data & ADAC2_GPIO_ALL_MASK ) );
}
}
Delay_ms ( 1000 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.ADAC2

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. UART terminal is available in all MikroElektronika compilers.


ADAC2_DATA_RATE_450_SPS
#define ADAC2_DATA_RATE_450_SPS
Definition: adac2.h:193
ADAC2_DAC_MIN_VALUE
#define ADAC2_DAC_MIN_VALUE
Definition: adac2.h:171
adac2_read_register
err_t adac2_read_register(adac2_t *ctx, uint8_t reg, uint32_t *data_out)
ADAC 2 read register function.
ADAC2_FULL_SCALE_RANGE_12p5V
#define ADAC2_FULL_SCALE_RANGE_12p5V
Definition: adac2.h:174
adac2_t
ADAC 2 Click context object.
Definition: adac2.h:287
adac2_get_rdy_pin
uint8_t adac2_get_rdy_pin(adac2_t *ctx)
ADAC 2 get rdy pin function.
ADAC2_GPIO_ALL_MASK
#define ADAC2_GPIO_ALL_MASK
Definition: adac2.h:241
adac2_read_voltage
err_t adac2_read_voltage(adac2_t *ctx, float fsr, float *voltage)
ADAC 2 read voltage function.
application_task
void application_task(void)
Definition: main.c:69
adac2_init
err_t adac2_init(adac2_t *ctx, adac2_cfg_t *cfg)
ADAC 2 initialization function.
ADAC2_CH_AI5_AI6_DIFFERENTIAL_25V
#define ADAC2_CH_AI5_AI6_DIFFERENTIAL_25V
Definition: adac2.h:224
ADAC2_MAP_MIKROBUS
#define ADAC2_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: adac2.h:270
adac2_start_conversion
err_t adac2_start_conversion(adac2_t *ctx, uint8_t data_rate)
ADAC 2 start conversion function.
adac2_write_register
err_t adac2_write_register(adac2_t *ctx, uint8_t reg, uint32_t data_in)
ADAC 2 write register function.
adac2_default_cfg
err_t adac2_default_cfg(adac2_t *ctx)
ADAC 2 default configuration function.
ADAC2_DAC_MAX_VALUE
#define ADAC2_DAC_MAX_VALUE
Definition: adac2.h:172
adac2_set_active_ain_channel
err_t adac2_set_active_ain_channel(adac2_t *ctx, uint8_t channel)
ADAC 2 set active ain channel function.
ADAC2_REG_GEN_GPIO_CTRL
#define ADAC2_REG_GEN_GPIO_CTRL
Definition: adac2.h:78
application_init
void application_init(void)
Definition: main.c:33
ADAC2_OK
@ ADAC2_OK
Definition: adac2.h:334
adac2_cfg_t
ADAC 2 Click configuration object.
Definition: adac2.h:309
ADAC2_FULL_SCALE_RANGE_25V
#define ADAC2_FULL_SCALE_RANGE_25V
Definition: adac2.h:173
adac2_cfg_setup
void adac2_cfg_setup(adac2_cfg_t *cfg)
ADAC 2 configuration object setup function.
ADAC2_ERROR
@ ADAC2_ERROR
Definition: adac2.h:335
adac2_stop_conversion
err_t adac2_stop_conversion(adac2_t *ctx)
ADAC 2 stop conversion function.
adac2_write_dac
err_t adac2_write_dac(adac2_t *ctx, int32_t dac)
ADAC 2 write dac function.
ADAC2_CH_AI4_SINGLE_ENDED
#define ADAC2_CH_AI4_SINGLE_ENDED
Definition: adac2.h:222