Beginner
10 min

Measure magnetic fields across three axes (X, Y, and Z) with TLI493D-A2B6 and PIC32MZ1024EFH064

For detailed magnetic field analysis or where the direction and magnitude of the magnetic field are critical

Magneto 6 Click with PIC32MZ clicker

Published Mar 15, 2024

Click board™

Magneto 6 Click

Dev.Board

PIC32MZ clicker

Compiler

NECTO Studio

MCU

PIC32MZ1024EFH064

Develop systems capable of precise 3D magnetic field mapping for innovative robotics, navigation, and security applications

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Hardware Overview

How does it work?

Magneto 6 Click is based on the TLI493D-A2B6, a low-power three-dimensional Hall effect sensor with an I2C interface from Infineon. Within its small 6-pin package, the sensor directly measures a magnetic field's X, Y, and Z components. This sensor offers accurate three-dimensional sensing with extremely low power consumption and consists of three main functional units. First is the power mode control system, containing a low-power oscillator, basic biasing, accurate restart, undervoltage detection, and a fast oscillator. Second, the sensing unit that contains the HALL biasing, HALL probes with multiplexers, successive tracking ADC, and a temperature sensor. Third, the I2C interface contains the register files. Some of the main characteristics of this sensor IC are 3D magnetic flux density sensing of ±160 mT, 12-bit

data resolution for each measurement direction plus 10-bit temperature sensor, programmable flux resolution down to 65 μT, and interrupt signal to indicate a valid measurement to the microcontroller. This sensor is equipped with different modes and a digital communication interface for a good adaptation. The I2C interface can be accessed in any power mode. The interrupt function is multiplexed with the I2C SCL pin and can be used to indicate measurement completion. Using an interrupt line is optional but highly recommended to ensure proper and efficient readout of the sensor data. Magneto 6 Click is ideally suited for measuring 3-dimensional movement within a magnetic field, linear slide movement, or 360° angle rotation. The magnetic measurement values are provided in the two complements with 12-bit or

8-bit resolutions in the registers with the symbols Bx, By, and Bz. By default, the temperature measurement is activated. The temperature measurement can be disabled if it is not needed and to increase the speed of the repetition of the magnetic values. This Click board™ uses an I2C communication interface designed to operate only with a 3.3V logic level. A proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with logic levels of 5V. More information about the TLI493D-A2B6 can be found in the attached datasheet. The Click board™ comes equipped with a library that contains easy-to-use functions and a usage example that may be used as a reference for the development.

Magneto 6 Click hardware overview image

Features overview

Development board

PIC32MZ Clicker is a compact starter development board that brings the flexibility of add-on Click boards™ to your favorite microcontroller, making it a perfect starter kit for implementing your ideas. It comes with an onboard 32-bit PIC32MZ microcontroller with FPU from Microchip, a USB connector, LED indicators, buttons, a mikroProg connector, and a header for interfacing with external electronics. Thanks to its compact design with clear and easy-recognizable silkscreen markings, it provides a fluid and immersive working experience, allowing access anywhere and under

any circumstances. Each part of the PIC32MZ Clicker development kit contains the components necessary for the most efficient operation of the same board. In addition to the possibility of choosing the PIC32MZ Clicker programming method, using USB HID mikroBootloader, or through an external mikroProg connector for PIC, dsPIC, or PIC32 programmer, the Clicker board also includes a clean and regulated power supply module for the development kit. The USB Micro-B connection can provide up to 500mA of current, which is more than enough to operate all onboard

and additional modules. All communication methods that mikroBUS™ itself supports are on this board, including the well-established mikroBUS™ socket, reset button, and several buttons and LED indicators. PIC32MZ Clicker is an integral part of the Mikroe ecosystem, allowing you to create a new application in minutes. Natively supported by Mikroe software tools, it covers many aspects of prototyping thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.

PIC32MZ clicker double side image

Microcontroller Overview

MCU Card / MCU

default

Architecture

PIC32

MCU Memory (KB)

1024

Silicon Vendor

Microchip

Pin count

64

RAM (Bytes)

524288

Used MCU Pins

mikroBUS™ mapper

NC
NC
AN
NC
NC
RST
Interrupt Enable
RG9
CS
NC
NC
SCK
NC
NC
MISO
NC
NC
MOSI
Power Supply
3.3V
3.3V
Ground
GND
GND
NC
NC
PWM
Interrupt
RB5
INT
NC
NC
TX
NC
NC
RX
I2C Clock
RD10
SCL
I2C Data
RD9
SDA
NC
NC
5V
Ground
GND
GND
1

Take a closer look

Schematic

Magneto 6 Click Schematic schematic

Step by step

Project assembly

PIC32MZ clicker front image hardware assembly

Start by selecting your development board and Click board™. Begin with the PIC32MZ clicker as your development board.

PIC32MZ clicker front image hardware assembly
Thermo 26 Click front image hardware assembly
Prog-cut hardware assembly
Micro B Connector clicker - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
Necto image step 5 hardware assembly
Necto image step 6 hardware assembly
Flip&Click PIC32MZ MCU step hardware assembly
Necto No Display image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Debug Image Necto Step hardware assembly

Track your results in real time

Application Output

After loading the code example, pressing the "DEBUG" button builds and programs it on the selected setup.

Application Output Step 1

After programming is completed, a header with buttons for various actions available in the IDE appears. By clicking the green "PLAY "button, we start reading the results achieved with Click board™.

Application Output Step 3

Upon completion of programming, the Application Output tab is automatically opened, where the achieved result can be read. In case of an inability to perform the Debug function, check if a proper connection between the MCU used by the setup and the CODEGRIP programmer has been established. A detailed explanation of the CODEGRIP-board connection can be found in the CODEGRIP User Manual. Please find it in the RESOURCES section.

Application Output Step 4

Software Support

Library Description

This library contains API for Magneto 6 Click driver.

Key functions:

  • magneto6_read_data - This function reads the measurements of the 3-axes magnetic field sensor in mT and the temperature sensor in degrees Celsius

  • magneto6_read_reg - This function reads a desired number of data bytes starting from the selected register by using I2C serial interface

  • magneto6_write_reg - This function writes a data byte to the selected register by using I2C serial interface

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 Magneto 6 Click example
 *
 * # Description
 * This example demonstrates the use of Magneto 6 click board by reading
 * the magnetic field strength from 3 axes as well as the ambient temperature measurements.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes the driver and performs the click default configuration.
 *
 * ## Application Task
 * Reads data from the sensor and displays them on the USB UART once per second.
 *
 * @author Stefan Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "magneto6.h"

static magneto6_t magneto6;
static log_t logger;

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    magneto6_cfg_t magneto6_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.
    magneto6_cfg_setup( &magneto6_cfg );
    MAGNETO6_MAP_MIKROBUS( magneto6_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == magneto6_init( &magneto6, &magneto6_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( MAGNETO6_ERROR == magneto6_default_cfg ( &magneto6 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

void application_task ( void ) 
{
    magneto6_data_t data_res;
    if ( MAGNETO6_OK == magneto6_read_data ( &magneto6, &data_res ) )
    {
        log_printf( &logger, " X data: %.1f mT\r\n", data_res.x_data );
        log_printf( &logger, " Y data: %.1f mT\r\n", data_res.y_data );
        log_printf( &logger, " Z data: %.1f mT\r\n", data_res.z_data );
        log_printf( &logger, " Temperature: %.2f degC\r\n\n", data_res.temperature );
    }
    Delay_ms ( 1000 );
}

int main ( void ) 
{
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}

// ------------------------------------------------------------------------ END

Additional Support

Resources