isoadc7  2.1.0.0
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ISO ADC 7 Click

ISO ADC 7 Click is a compact add-on board designed for precise multi-channel data acquisition in various industrial applications. This board features the AMC131M03, a three-channel, 24-bit delta-sigma ADC from Texas Instruments. The AMC131M03 features a silicon-dioxide-based isolation barrier providing 5000-VRMS isolation, integrated digital decimation filters for reduced quantization noise, and a programmable gain amplifier with gains up to 128 for high-accuracy measurements. Additionally, it includes an internal temperature sensor with options for external or onboard temperature sensing.

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : May 2024.
  • Type : SPI type

Software Support

We provide a library for the ISO ADC 7 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 ISO ADC 7 Click driver.

Standard key functions :

Example key functions :

  • isoadc7_read_voltage This function reads the voltage measurements of all three channels.
    err_t isoadc7_read_voltage ( isoadc7_t *ctx, float *ch0, float *ch1, float *ch2 );
  • isoadc7_read_data This function reads the status register and raw data of all three channels.
    err_t isoadc7_read_data ( isoadc7_t *ctx, isoadc7_data_t *data_out );
  • isoadc7_set_gain This function sets the gain level for all channels.
    err_t isoadc7_set_gain ( isoadc7_t *ctx, uint8_t gain_ch0, uint8_t gain_ch1, uint8_t gain_ch2 );

Example Description

This example demonstrates the use of ISO ADC 7 Click board by reading and displaying the voltage levels from 3 isolated analog input channels.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the Click default configuration. The full-scale voltage input range is set to +-1.2V for all channels.

void application_init ( void )
{
log_cfg_t log_cfg;
isoadc7_cfg_t isoadc7_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
isoadc7_cfg_setup( &isoadc7_cfg );
ISOADC7_MAP_MIKROBUS( isoadc7_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == isoadc7_init( &isoadc7, &isoadc7_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( ISOADC7_ERROR == isoadc7_default_cfg ( &isoadc7 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Reads the voltage levels from all 3 isolated analog input channels and displays the results on the USB UART once per second approximately.

void application_task ( void )
{
float ch0 = 0;
float ch1 = 0;
float ch2 = 0;
if ( ISOADC7_OK == isoadc7_read_voltage ( &isoadc7, &ch0, &ch1, &ch2 ) )
{
log_printf ( &logger, " CH0: %.1f mV\r\n", ch0 );
log_printf ( &logger, " CH1: %.1f mV\r\n", ch1 );
log_printf ( &logger, " CH2: %.1f mV\r\n\n", ch2 );
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.ISOADC7

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.


ISOADC7_MAP_MIKROBUS
#define ISOADC7_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: isoadc7.h:345
isoadc7_init
err_t isoadc7_init(isoadc7_t *ctx, isoadc7_cfg_t *cfg)
ISO ADC 7 initialization function.
isoadc7_data_t
ISO ADC 7 Click data object.
Definition: isoadc7.h:362
isoadc7_t
ISO ADC 7 Click context object.
Definition: isoadc7.h:375
application_task
void application_task(void)
Definition: main.c:66
isoadc7_default_cfg
err_t isoadc7_default_cfg(isoadc7_t *ctx)
ISO ADC 7 default configuration function.
ISOADC7_ERROR
@ ISOADC7_ERROR
Definition: isoadc7.h:426
ISOADC7_OK
@ ISOADC7_OK
Definition: isoadc7.h:425
isoadc7_read_data
err_t isoadc7_read_data(isoadc7_t *ctx, isoadc7_data_t *data_out)
ISO ADC 7 read data function.
isoadc7_set_gain
err_t isoadc7_set_gain(isoadc7_t *ctx, uint8_t gain_ch0, uint8_t gain_ch1, uint8_t gain_ch2)
ISO ADC 7 set gain function.
isoadc7_cfg_t
ISO ADC 7 Click configuration object.
Definition: isoadc7.h:400
isoadc7_cfg_setup
void isoadc7_cfg_setup(isoadc7_cfg_t *cfg)
ISO ADC 7 configuration object setup function.
application_init
void application_init(void)
Definition: main.c:30
isoadc7_read_voltage
err_t isoadc7_read_voltage(isoadc7_t *ctx, float *ch0, float *ch1, float *ch2)
ISO ADC 7 read voltage function.