30 min

Achieve precise and reliable directional information with HSCDTD008A and TM4C1299KCZAD

Never lose your way again: Introducing the ultimate electronic compass

Compass 6 Click with Fusion for ARM v8

Published Sep 28, 2023

Click board™

Compass 6 Click

Development board

Fusion for ARM v8


NECTO Studio



Explore the world with confidence using our electronic compass technology, offering unparalleled accuracy and ease of use



Hardware Overview

How does it work?

Compass 6 Click is based on the HSCDTD008A, a high-sensitivity three-axis terrestrial magnetism sensor from ALPS Alpine. It has an integrated drive circuit, signal processing circuit, and serial interface block, allowing low noise and high resolution. The HSCDTD008A can measure magnetic field strengths of ±2.4mT on each of its three axes and provides an output resolution of 0.15µT/LSB. This Click board™ represents a perfect choice for implementation in applications such as an electronic compass. At the beginning of the operation, all internal circuits and registers are set to the default state by turning the power ON. The

operating mode is automatically set to a low-power Standby mode by Power-On reset. In addition to the Standby mode, this sensor has an Active mode for power control accessible through a register command. The active mode has two states: the force state, which starts measurement and outputs data by register command, and the Normal state, which performs measurement and outputs data using the internal timer trigger. Compass 6 Click communicates with MCU using the standard I2C 2-Wire interface to read data and configure settings, supporting Standard Mode operation with a clock frequency of 100kHz, Fast

Mode up to 400kHz, and Fast Mode Plus up to 1MHz, in addition to the High-Speed Mode. It also features an additional ready signal, labeled as RDY and routed on the INT pin of the mikroBUS™ socket, that informs when new measured results for the host are updated. This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Compass 6 Click top side image
Compass 6 Click bottom side image

Features overview

Development board

Fusion for ARM v8 is a development board specially designed for the needs of rapid development of embedded applications. It supports a wide range of microcontrollers, such as different ARM® Cortex®-M based MCUs regardless of their number of pins, and a broad set of unique functions, such as the first-ever embedded debugger/programmer over WiFi. The development board is well organized and designed so that the end-user has all the necessary elements, such as switches, buttons, indicators, connectors, and others, in one place. Thanks to innovative manufacturing technology, Fusion for ARM v8 provides a fluid and immersive working experience, allowing access anywhere and under any

circumstances at any time. Each part of the Fusion for ARM v8 development board contains the components necessary for the most efficient operation of the same board. An advanced integrated CODEGRIP programmer/debugger module offers many valuable programming/debugging options, including support for JTAG, SWD, and SWO Trace (Single Wire Output)), and seamless integration with the Mikroe software environment. Besides, it also includes a clean and regulated power supply module for the development board. It can use a wide range of external power sources, including a battery, an external 12V power supply, and a power source via the USB Type-C (USB-C) connector.

Communication options such as USB-UART, USB HOST/DEVICE, CAN (on the MCU card, if supported), and Ethernet is also included. In addition, it also has the well-established mikroBUS™ standard, a standardized socket for the MCU card (SiBRAIN standard), and two display options for the TFT board line of products and character-based LCD. Fusion for ARM v8 is an integral part of the Mikroe ecosystem for rapid development. Natively supported by Mikroe software tools, it covers many aspects of prototyping and development thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.

Fusion for ARM v8 horizontal image

Microcontroller Overview

MCU Card / MCU



8th Generation


ARM Cortex-M4

MCU Memory (KB)


Silicon Vendor

Texas Instruments

Pin count


RAM (Bytes)


Used MCU Pins

mikroBUS™ mapper

Power Supply
Data Ready
I2C Clock
I2C Data

Take a closer look


Compass 6 Click Schematic schematic

Step by step

Project assembly

Fusion for PIC v8 front image hardware assembly

Start by selecting your development board and Click board™. Begin with the Fusion for ARM v8 as your development board.

Fusion for PIC v8 front image hardware assembly
Buck 22 Click front image hardware assembly
SiBRAIN for PIC32MZ1024EFK144 front image hardware assembly
v8 SiBRAIN MB 1 - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
NECTO Compiler Selection Step Image hardware assembly
NECTO Output Selection Step Image hardware assembly
Necto image step 6 hardware assembly
Necto image step 7 hardware assembly
Necto image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Necto PreFlash Image hardware assembly

Track your results in real time

Application Output

After pressing the "FLASH" button on the left-side panel, it is necessary to open the UART terminal to display the achieved results. By clicking on the Tools icon in the right-hand panel, multiple different functions are displayed, among which is the UART Terminal. Click on the offered "UART Terminal" icon.

UART Application Output Step 1

Once the UART terminal is opened, the window takes on a new form. At the top of the tab are two buttons, one for adjusting the parameters of the UART terminal and the other for connecting the UART terminal. The tab's lower part is reserved for displaying the achieved results. Before connecting, the terminal has a Disconnected status, indicating that the terminal is not yet active. Before connecting, it is necessary to check the set parameters of the UART terminal. Click on the "OPTIONS" button.

UART Application Output Step 2

In the newly opened UART Terminal Options field, we check if the terminal settings are correct, such as the set port and the Baud rate of UART communication. If the data is not displayed properly, it is possible that the Baud rate value is not set correctly and needs to be adjusted to 115200. If all the parameters are set correctly, click on "CONFIGURE".

UART Application Output Step 3

The next step is to click on the "CONNECT" button, after which the terminal status changes from Disconnected to Connected in green, and the data is displayed in the Received data field.

UART Application Output Step 4

Software Support

Library Description

This library contains API for Compass 6 Click driver.

Key functions:

  • compass6_get_axes_data - Magnetic axes data reading

  • compass6_data_ready - Get data ready pin state

  • compass6_generic_read - Reading 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 Compass6 Click example
 * # Description
 * This example is a showcase the ability of the device
 * to read 3 axis data of magnetic raw value when data is ready.
 * The demo application is composed of two sections :
 * ## Application Init
 * Initialization of communication modules (I2C, UART) and data 
 * ready pin as input. Then reads identification data and checks 
 * if some of them have wrong value, and configures device for reading.
 * ## Application Task
 * Checks Data ready pin and if asserted high it will read data of all
 * 3 axes(x, y, z) and log data to Terminal and set delay of 500ms.
 * @author Luka Filipovic

#include "board.h"
#include "log.h"
#include "compass6.h"

static compass6_t compass6;
static log_t logger;

void application_init ( void ) 
    log_cfg_t log_cfg;  /**< Logger config object. */
    compass6_cfg_t compass6_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.
    compass6_cfg_setup( &compass6_cfg );
    COMPASS6_MAP_MIKROBUS( compass6_cfg, MIKROBUS_1 );
    err_t init_flag = compass6_init( &compass6, &compass6_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    uint8_t temp_data = 0;
    compass6_generic_read( &compass6, COMPASS6_REG_WHO_I_AM, &temp_data );
    log_printf( &logger, " > Who am I: 0x%.2X\r\n", ( uint16_t )temp_data );
    if ( COMPASS6_WHO_AM_I != temp_data )
        log_error( &logger, " Who am I. " );
    compass6_generic_read( &compass6, COMPASS6_REG_INFO_VERSION, &temp_data );
    log_printf( &logger, " > Version: 0x%.2X\r\n", ( uint16_t )temp_data );
    if ( COMPASS6_VERSION != temp_data )
        log_error( &logger, " Version. " );
    compass6_generic_read( &compass6, COMPASS6_REG_INFO_ALPS, &temp_data );
    log_printf( &logger, " > ALPS: 0x%.2X\r\n", ( uint16_t )temp_data );
    if ( COMPASS6_ALPS != temp_data )
        log_error( &logger, " ALPS. " );

    compass6_default_cfg ( &compass6 );
    log_info( &logger, " Application Task " );
    Delay_ms( 2000 );

void application_task ( void ) 
    if ( compass6_data_ready( &compass6 ) )
        compass6_axes_t axes_data;
        compass6_get_axes_data( &compass6, &axes_data );
        log_printf( &logger, " > X: %d\r\n", axes_data.x );
        log_printf( &logger, " > Y: %d\r\n", axes_data.y );
        log_printf( &logger, " > Z: %d\r\n", axes_data.z );
        log_printf( &logger, "*********************\r\n" );
        Delay_ms( 500 );

void main ( void ) 
    application_init( );

    for ( ; ; ) 
        application_task( );

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

Additional Support