Elevate your user experience with our smart joystick and MK64FN1M0VDC12 combo
Empowering your adventures, one tilt at a time
Published Oct 17, 2023
Click board™
Joystick 2 Click
Dev Board
Clicker 2 for Kinetis
Compiler
NECTO Studio
MCU
MK64FN1M0VDC12
Experience the future of navigation with the smart joystick concept, providing users with a seamless and intuitive way to explore digital worlds
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Hardware Overview
How does it work?
Joystick 2 Click is based on the SKRHABE01, a 4-direction joystick switch with Center-push Function from Alps Alpine. It is positioned on the board so it is easily accessible for interacting and the lever could be pressed, activating the microswitch that way. The microswitch is actuated by applying very little physical force, using a tipping-point mechanism which results in fast and reliable snap-in action. It has both NO (Normal open) contacts routed to the mikroBUS™ over the port expander. The switch lines are equipped with the RC filters, which serve as debouncing
elements for the switch and also to pull-up the lines when they are left afloat. This way, the contact bouncing is reduced even further, resulting in an accurate detection of the switching event. As already mentioned above, this click board™ contains the port expander, relatively large number of needed GPIO pins for the joystick switch. Used IC is PCA9538A, Low-voltage 8-bit I2C-bus I/O port with interrupt and reset, from NXP Semiconductors. It uses the I2C communication for interfacing with the main MCU, which simplifies the number of needed pins,
and therefore the design itself. The Active LOW reset input (RESET) and Open-drain active LOW interrupt output (INT) pins helps simplifying the design even further. 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
Clicker 2 for Kinetis 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 ARM Cortex-M4F microcontroller, the MK64FN1M0VDC12 from NXP Semiconductors, two mikroBUS™ sockets for Click board™ connectivity, a USB connector, LED indicators, buttons, a JTAG programmer connector, and two 26-pin headers for interfacing with external electronics. Its compact design with clear and easily recognizable silkscreen markings allows you to build gadgets with unique functionalities and
features quickly. Each part of the Clicker 2 for Kinetis development kit contains the components necessary for the most efficient operation of the same board. In addition to the possibility of choosing the Clicker 2 for Kinetis programming method, using a USB HID mikroBootloader or an external mikroProg connector for Kinetis programmer, the Clicker 2 board also includes a clean and regulated power supply module for the development kit. It provides two ways of board-powering; through the USB Micro-B cable, where onboard voltage regulators provide the appropriate voltage levels to each component on the board, or
using a Li-Polymer battery via an onboard battery connector. All communication methods that mikroBUS™ itself supports are on this board, including the well-established mikroBUS™ socket, reset button, and several user-configurable buttons and LED indicators. Clicker 2 for Kinetis 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.
Microcontroller Overview
MCU Card / MCU
Architecture
ARM Cortex-M4
MCU Memory (KB)
1024
Silicon Vendor
NXP
Pin count
121
RAM (Bytes)
262144
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 Clicker 2 for Kinetis 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 Joystick 2 Click driver.
Key functions:
joystick2_set_cfg_register- Functions for configuration joystickjoystick2_get_position- Functions for get Joystick positionjoystick2_get_interrupt_state- Functions for read interrupt state
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
* \brief Joystick2 Click example
*
* # Description
* The demo application shows reading the joistick position ..
*
* The demo application is composed of two sections :
*
* ## Application Init
* Configuring clicks and log objects.
* Reset device and settings the click in the default configuration.
*
* ## Application Task
* It reads the position of the joystick,
* if it detects that the joystick has moved from the zero position,
* it prints a message about the current position.
*
* @note: The I2C peripheral lines external pull up can be required.
*
* \author Katarina Perendic
*
*/
// ------------------------------------------------------------------- INCLUDES
#include "board.h"
#include "log.h"
#include "joystick2.h"
// ------------------------------------------------------------------ VARIABLES
static joystick2_t joystick2;
static log_t logger;
// ------------------------------------------------------ APPLICATION FUNCTIONS
void application_init ( void )
{
log_cfg_t log_cfg;
joystick2_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.
joystick2_cfg_setup( &cfg );
JOYSTICK2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
joystick2_init( &joystick2, &cfg );
joystick2_reset( &joystick2 );
joystick2_default_cfg( &joystick2 );
log_info( &logger, "---- JOYSTICK START ----" );
}
void application_task ( void )
{
uint8_t joystick_pos;
// Task implementation.
joystick_pos = joystick2_get_position( &joystick2 );
switch ( joystick_pos )
{
case JOYSTICK2_BUTTON_ACTIVE:
{
log_info( &logger, "--- Button is pressed!!! ---" );
Delay_ms( 300 );
break;
}
case JOYSTICK2_POSITION_RIGHT:
{
log_info( &logger, "--- Joystick position [RIGHT] ---" );
Delay_ms( 300 );
break;
}
case JOYSTICK2_POSITION_LEFT:
{
log_info( &logger, "--- Joystick position [LEFT] ---" );
Delay_ms( 300 );
break;
}
case JOYSTICK2_POSITION_UP:
{
log_info( &logger, "--- Joystick position [UP] ---" );
Delay_ms( 300 );
break;
}
case JOYSTICK2_POSITION_DOWN:
{
log_info( &logger, "--- Joystick position [DOWN] ---" );
Delay_ms( 300 );
break;
}
}
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
