Beginner
10 min

Achieve limitless control with AS5013 and PIC32MZ2048EFH100

Tiny but mighty!

Joystick Click with Flip&Click PIC32MZ

Published Jun 19, 2023

Click board™

Joystick Click

Dev. board

Flip&Click PIC32MZ

Compiler

NECTO Studio

MCU

PIC32MZ2048EFH100

Control devices or systems by moving a knob in different directions

A

A

Hardware Overview

How does it work?

Joystick Click is based on the AS5013 and N50P105, a miniature magnetic joystick module, and a complete hall sensor IC from ams AG. The N50P105 represents a smart navigation key concept based on contactless magnetic movement detection. That's precisely why this Click board™ is characterized by high reliability due to magnetic contact-less sensing. On the other hand, the two-dimensional linear encoder AS5013, mounted into the joystick, directly provides the X and Y coordinate through an I2C interface, thus forming a high-quality joystick. The AS5013 includes five integrated Hall sensing elements for detecting up to

±2mm lateral displacement, high-resolution ADC, XY coordinate, and motion detection engine combined with a smart power management controller. The X and Y positions coordinate, and magnetic field information for each Hall sensor element is transmitted over a 2-wire I2C compliant interface to the host MCU with a maximum clock frequency of 3.4MHz. Also, the AS5013 allows choosing the least significant bit (LSB) of its I2C slave address using the SMD jumper labeled I2C ADD. Also, an additional feature of this board represents an integrated mechanical push button built into the N50P105 joystick providing a "Select"

function that can be digitally tracked via the CS pin on the mikroBUS™ socket marked as TST. Alongside its interrupt feature routed to the INT pin of the mikroBUS™ socket, the AS5013 also provides an active-low Reset function routed to the RST pin on the mikroBUS™ socket. This Click board™ can only be operated with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Joystick Click hardware overview image

Features overview

Development board

Flip&Click PIC32MZ is a compact development board designed as a complete solution 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, the PIC32MZ2048EFH100 from Microchip, four mikroBUS™ sockets for Click board™ connectivity, two USB connectors, LED indicators, buttons, debugger/programmer connectors, and two headers compatible with Arduino-UNO pinout. Thanks to innovative manufacturing technology,

it allows you to build gadgets with unique functionalities and features quickly. Each part of the Flip&Click PIC32MZ development kit contains the components necessary for the most efficient operation of the same board. In addition, there is the possibility of choosing the Flip&Click PIC32MZ programming method, using the chipKIT bootloader (Arduino-style development environment) or our USB HID bootloader using mikroC, mikroBasic, and mikroPascal for PIC32. This kit includes a clean and regulated power supply block through the USB Type-C (USB-C) connector. All communication

methods that mikroBUS™ itself supports are on this board, including the well-established mikroBUS™ socket, user-configurable buttons, and LED indicators. Flip&Click PIC32MZ development kit allows 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.

Flip&Click PIC32MZ double image

Microcontroller Overview

MCU Card / MCU

default

Architecture

PIC32

MCU Memory (KB)

2048

Silicon Vendor

Microchip

Pin count

100

RAM (Bytes)

524288

Used MCU Pins

mikroBUS™ mapper

NC
NC
AN
Reset
RE2
RST
Pushbutton Detection
RA0
CS
NC
NC
SCK
NC
NC
MISO
NC
NC
MOSI
Power Supply
3.3V
3.3V
Ground
GND
GND
NC
NC
PWM
Interrupt
RD9
INT
NC
NC
TX
NC
NC
RX
I2C Clock
RA2
SCL
I2C Data
RA3
SDA
NC
NC
5V
Ground
GND
GND
1

Take a closer look

Click board™ Schematic

Joystick Click Schematic schematic

Step by step

Project assembly

Flip&Click PIC32MZ front image hardware assembly

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

Flip&Click PIC32MZ front image hardware assembly
GNSS2 Click front image hardware assembly
Prog-cut hardware assembly
GNSS2 Click complete accessories setup image hardware assembly
Flip&Click PIC32MZ MB1 Access - 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

1. Application Output - In Debug mode, the 'Application Output' window enables real-time data monitoring, offering direct insight into execution results. Ensure proper data display by configuring the environment correctly using the provided tutorial.

2. UART Terminal - Use the UART Terminal to monitor data transmission via a USB to UART converter, allowing direct communication between the Click board™ and your development system. Configure the baud rate and other serial settings according to your project's requirements to ensure proper functionality. For step-by-step setup instructions, refer to the provided tutorial.

3. Plot Output - The Plot feature offers a powerful way to visualize real-time sensor data, enabling trend analysis, debugging, and comparison of multiple data points. To set it up correctly, follow the provided tutorial, which includes a step-by-step example of using the Plot feature to display Click board™ readings. To use the Plot feature in your code, use the function: plot(*insert_graph_name*, variable_name);. This is a general format, and it is up to the user to replace 'insert_graph_name' with the actual graph name and 'variable_name' with the parameter to be displayed.

Software Support

Library Description

This library contains API for Joystick Click driver.

Key functions:

  • joystick_get_position - Get joystick position function

  • joystick_press_button - Get state of Joystick button function

  • joystick_soft_reset - General soft reset function

Open Source

Code example

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

/*!
 * \file 
 * \brief Joystick Click example
 * 
 * # Description
 * This application configures and enables use of the joystick.
 *
 * The demo application is composed of two sections :
 * 
 * ## Application Init 
 * Initialization driver enables - device,
 *  sets default configuration and starts write log.
 * 
 * ## Application Task  
 * (code snippet) This is a example which demonstrates the use of Joystick Click board.
 * Joystick Click communicates with register via I2C by write and read from register,
 * read joystick position and press button state.
 * Results are being sent to the Usart Terminal where you can track their changes.
 * All data logs on usb uart when the sensor is triggered.
 * 
 * 
 * \author MikroE Team
 *
 */
// ------------------------------------------------------------------- INCLUDES

#include "board.h"
#include "log.h"
#include "joystick.h"

// ------------------------------------------------------------------ VARIABLES

static joystick_t joystick;
static log_t logger;

uint8_t position;
uint8_t button_state;
uint8_t position_old = 1;
uint8_t button_state_old = 1;

// ------------------------------------------------------ APPLICATION FUNCTIONS

void application_init ( void )
{
    log_cfg_t log_cfg;
    joystick_cfg_t cfg;

    /** 
     * 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.

    joystick_cfg_setup( &cfg );
    JOYSTCIK_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    joystick_init( &joystick, &cfg );

    Delay_ms ( 100 );

    joystick_default_cfg( &joystick );

    log_printf( &logger,  "*********************\r\n" );
    log_printf( &logger,  "    Configuration    \r\n" );
    log_printf( &logger,  "*********************\r\n" );
    log_printf( &logger,  "    Joystick Click   \r\n" );
    log_printf( &logger,  "*********************\r\n" );

    Delay_ms ( 100 );
}

void application_task ( void ) 
{
    //  Task implementation.

    button_state = joystick_press_button( &joystick );

    position = joystick_get_position( &joystick );

    Delay_ms ( 10 );

    if ( ( button_state == 1 ) && ( button_state_old == 0 ) )
    {
        button_state_old = 1;

        log_printf( &logger, "  Button is pressed \r\n" );
        log_printf( &logger, "*********************\r\n" );
    }

    if ( ( button_state == 0 ) && ( button_state_old == 1 ) )
    {
        button_state_old = 0;
    }

    if ( position_old != position )
    {
        switch ( position )
        {
            case 0 :
            {
                log_printf( &logger,"    Start position    \r\n" );
                break;
            }
            case 1 :
            {
                log_printf( &logger, "         Top    \r\n" );
                break;
            }
            case 2 :
            {
                log_printf( &logger, "      Top-Right    \r\n" );
                break;
            }
            case 3 :
            {
                log_printf( &logger, "        Right    \r\n" );
                break;
            }
            case 4 :
            {
                log_printf( &logger, "     Bottom-Right    \r\n" );
                break;
            }
            case 5 :
            {
                log_printf( &logger, "        Bottom    \r\n" );
                break;
            }
            case 6 :
            {
                log_printf( &logger, "     Bottom-Left    \r\n" );
                break;
            }
            case 7 :
            {
                log_printf( &logger, "         Left    \r\n" );
                break;
            }
            case 8 :
            {
                log_printf( &logger, "       Top-Left    \r\n" );
                break;
            }
        }

        log_printf( &logger, "*********************\r\n" );

        position_old = position;

        Delay_ms ( 100 );
    }
}

int main ( void ) 
{
    /* Do not remove this line or clock might not be set correctly. */
    #ifdef PREINIT_SUPPORTED
    preinit();
    #endif
    
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}


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

Additional Support

Resources

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