daq  2.0.0.0
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DAQ click

DAQ Click is a compact add-on board representing a data acquisition solution. This board features the ADAQ7768-1, a 24-bit precision data acquisition (DAQ) μModule system that encapsulates signal conditioning, conversion, and processing blocks into one SiP from Analog Devices. It supports a fully differential input signal with a maximum voltage range of ±12V with an excellent common-mode rejection ratio (CMRR). The input signal is fully buffered with a low input bias current, enabling the ADAQ7768-1 to interface to sensors with high output impedance directly.

click Product page


Click library

  • Author : Luka Filipovic
  • Date : Jun 2021.
  • Type : SPI type

Software Support

We provide a library for the DAQ 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 DAQ Click driver.

Standard key functions :

Example key functions :

Example Description

This example showcases ability of the device to read ADC

data and calculate voltage for set configuration.

The demo application is composed of two sections :

Application Init

Initialization of communication modules (SPI, UART) and

additional pins for controling device. Resets device and then configures default configuration and sets read range by setting gain to +-12V. In the end reads vendor and device ID to confirm communication.

void application_init ( void )
{
log_cfg_t log_cfg;
daq_cfg_t daq_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
daq_cfg_setup( &daq_cfg );
DAQ_MAP_MIKROBUS( daq_cfg, MIKROBUS_1 );
err_t init_flag = daq_init( &daq, &daq_cfg );
if ( SPI_MASTER_ERROR == init_flag )
{
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
if ( daq_default_cfg ( &daq ) )
{
log_error( &logger, " Default configuration. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
uint8_t id = 0;
log_printf( &logger, " > Vendor: \t0x%.2X", ( uint16_t )id );
log_printf( &logger, "%.2X\r\n", ( uint16_t )id );
log_printf( &logger, " > ID: \t\t0x%.2X", ( uint16_t )id );
log_printf( &logger, "%.2X\r\n", ( uint16_t )id );
Delay_ms( 1000 );
log_info( &logger, " Application Task " );
}

Application Task

Reads ADC data and calculates voltage from it, every 0.3 seconds.

void application_task ( void )
{
int32_t adc_data = 0;
float voltage = 0.0;
daq_read_data( &daq, &adc_data );
daq_calculate_voltage( &daq, adc_data, &voltage );
log_printf( &logger, " > Data: %ld\r\n", adc_data );
log_printf( &logger, " > Voltage: %.2f\r\n", voltage );
log_printf( &logger, "***********************************\r\n" );
Delay_ms( 300 );
}

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.DAQ

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.


DAQ_REG_VENDOR_L
#define DAQ_REG_VENDOR_L
Definition: daq.h:64
daq_gain
daq_gain
DAQ GAIN configuration values.
Definition: daq.h:619
daq_cfg_t
DAQ Click configuration object.
Definition: daq.h:685
DAQ_REG_PRODUCT_ID_L
#define DAQ_REG_PRODUCT_ID_L
Definition: daq.h:60
daq_read_data
err_t daq_read_data(daq_t *ctx, int32_t *adc_data)
Reading adc data.
DAQ_REG_PRODUCT_ID_H
#define DAQ_REG_PRODUCT_ID_H
Definition: daq.h:61
application_task
void application_task(void)
Definition: main.c:84
daq_default_cfg
err_t daq_default_cfg(daq_t *ctx)
DAQ default configuration function.
daq_t
DAQ Click context object.
Definition: daq.h:662
daq_calculate_voltage
void daq_calculate_voltage(daq_t *ctx, int32_t adc_data, float *voltage)
Convert data from raw ADC to voltage.
daq_generic_read
err_t daq_generic_read(daq_t *ctx, uint8_t reg, uint8_t *data_out, uint8_t len)
DAQ data reading function.
DAQ_REG_VENDOR_H
#define DAQ_REG_VENDOR_H
Definition: daq.h:65
daq_init
err_t daq_init(daq_t *ctx, daq_cfg_t *cfg)
DAQ initialization function.
daq_set_gain
err_t daq_set_gain(daq_t *ctx, daq_gain gain)
Set gain range.
application_init
void application_init(void)
Definition: main.c:32
DAQ_MAP_MIKROBUS
#define DAQ_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: daq.h:645
daq_cfg_setup
void daq_cfg_setup(daq_cfg_t *cfg)
DAQ configuration object setup function.