Deliver reliable and precise readings for both AC and DC currents with ACS37010 and STM32F031K6
The future of current monitoring
Published Oct 01, 2024
Click board™
Hall Current 17 Click
Dev Board
Nucleo 32 with STM32F031K6 MCU
Compiler
NECTO Studio
MCU
STM32F031K6
Discover the future of current sensing technology with our advanced Hall effect sensors, delivering unparalleled accuracy and responsiveness for real-time monitoring of AC and DC currents in your systems.
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Hardware Overview
How does it work?
Hall Current 17 Click is based on the ACS37010, a high-accuracy current sensor from Allegro MicroSystems. It is a fully integrated Hall-effect current sensor, factory-trimmed to provide high accuracy over the entire operating range without user programming. The internal construction provides high isolation and excellent magnetic coupling of the field generated by the current flowing in the conductor and the fully monolithic Hall sensor IC. Two Hall plates that subtract interfering common-mode magnetic fields sense the current differentially. The Hall sensor has no physical connection to the integrated current conductor, as the ACS37002 provides high isolation between the primary and secondary signal leads by magnetically coupling the field generated by the
current in the conductor. The current sensor features overvoltage detection, undervoltage detection, temperature compensation, and more. The ACS37010 is rated to withstand 3500VRMS of dielectric voltage. The IP+ and IP- terminals allow connecting the load over the load connectors. The ACS37010 has a current sensing range of ±50A and a fixed sensitivity of 40mV/A. It uses differential sensing, which is robust against external magnetic fields. The Hall Current 17 Click uses the nonratiometric operation of ACS37010 with VREF output for enhanced accuracy in a noisy environment. The signal from Hall plates passes the integrated front and back amplifiers, and after it passes to the VOUT buffer, the output is sent along with the zero current voltage reference to the
ADC122S101, a two-channel 12-bit A/D converter from Texas Instruments. This ADC is fully specified over a sample rate range of 500ksps to 1Msps. It is based on a successive/approximation register architecture with an internal track-an-hold circuit. Hall Current 17 Click uses a standard 4-Wire SPI serial interface of the ADC122S101 to communicate with the host MCU. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.
Features overview
Development board
Nucleo 32 with STM32F031K6 MCU board provides an affordable and flexible platform for experimenting with STM32 microcontrollers in 32-pin packages. Featuring Arduino™ Nano connectivity, it allows easy expansion with specialized shields, while being mbed-enabled for seamless integration with online resources. The
board includes an on-board ST-LINK/V2-1 debugger/programmer, supporting USB reenumeration with three interfaces: Virtual Com port, mass storage, and debug port. It offers a flexible power supply through either USB VBUS or an external source. Additionally, it includes three LEDs (LD1 for USB communication, LD2 for power,
and LD3 as a user LED) and a reset push button. The STM32 Nucleo-32 board is supported by various Integrated Development Environments (IDEs) such as IAR™, Keil®, and GCC-based IDEs like AC6 SW4STM32, making it a versatile tool for developers.
Microcontroller Overview
MCU Card / MCU
Architecture
ARM Cortex-M0
MCU Memory (KB)
32
Silicon Vendor
STMicroelectronics
Pin count
32
RAM (Bytes)
4096
You complete me!
Accessories
Click Shield for Nucleo-32 is the perfect way to expand your development board's functionalities with STM32 Nucleo-32 pinout. The Click Shield for Nucleo-32 provides two mikroBUS™ sockets to add any functionality from our ever-growing range of Click boards™. We are fully stocked with everything, from sensors and WiFi transceivers to motor control and audio amplifiers. The Click Shield for Nucleo-32 is compatible with the STM32 Nucleo-32 board, providing an affordable and flexible way for users to try out new ideas and quickly create prototypes with any STM32 microcontrollers, choosing from the various combinations of performance, power consumption, and features. The STM32 Nucleo-32 boards do not require any separate probe as they integrate the ST-LINK/V2-1 debugger/programmer and come with the STM32 comprehensive software HAL library and various packaged software examples. This development platform provides users with an effortless and common way to combine the STM32 Nucleo-32 footprint compatible board with their favorite Click boards™ in their upcoming projects.
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Nucleo 32 with STM32F031K6 MCU as your development board.
Track your results in real time
Application Output via Debug Mode
1. Once the code example is loaded, pressing the "DEBUG" button initiates the build process, programs it on the created setup, and enters Debug mode.
2. After the programming is completed, a header with buttons for various actions within the IDE becomes visible. Clicking the green "PLAY" button starts reading the results achieved with the Click board™. The achieved results are displayed in the Application Output tab.
Software Support
Library Description
This library contains API for Hall Current 17 Click driver.
Key functions:
hallcurrent17_get_current- Hall Current 17 get current function.hallcurrent17_get_vout- Hall Current 17 get Vout function.hallcurrent17_get_vref- Hall Current 17 get Vref function.
Open Source
Code example
This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.
/*!
* @file main.c
* @brief Hall Current 17 Click example
*
* # Description
* This example demonstrates the use of Hall Current 17 Click board™
* by reading and displaying the current measurements.
*
* The demo application is composed of two sections :
*
* ## Application Init
* The initialization of SPI module and log UART.
* After driver initialization, the app sets the default configuration.
*
* ## Application Task
* The demo application reads the current measurements [A] and displays the results.
* Results are being sent to the UART Terminal, where you can track their changes.
*
* @author Nenad Filipovic
*
*/
#include "board.h"
#include "log.h"
#include "hallcurrent17.h"
static hallcurrent17_t hallcurrent17;
static log_t logger;
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
hallcurrent17_cfg_t hallcurrent17_cfg; /**< Click config object. */
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
hallcurrent17_cfg_setup( &hallcurrent17_cfg );
HALLCURRENT17_MAP_MIKROBUS( hallcurrent17_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == hallcurrent17_init( &hallcurrent17, &hallcurrent17_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( HALLCURRENT17_ERROR == hallcurrent17_default_cfg ( &hallcurrent17 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
static float current = 0.0;
if ( HALLCURRENT17_OK == hallcurrent17_get_current( &hallcurrent17, ¤t ) )
{
log_printf( &logger, " Current: %.3f [A]\r\n", current );
}
log_printf( &logger, " --------------------\r\n" );
Delay_ms( 1000 );
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
