TOP Contributors

  1. MIKROE (2784 codes)
  2. Alcides Ramos (402 codes)
  3. Shawon Shahryiar (307 codes)
  4. jm_palomino (129 codes)
  5. Bugz Bensce (97 codes)
  6. S P (73 codes)
  7. dany (71 codes)
  8. MikroBUS.NET Team (35 codes)
  9. NART SCHINACKOW (34 codes)
  10. Armstrong Subero (27 codes)

Most Downloaded

  1. Timer Calculator (140790 times)
  2. FAT32 Library (73399 times)
  3. Network Ethernet Library (58204 times)
  4. USB Device Library (48390 times)
  5. Network WiFi Library (44004 times)
  6. FT800 Library (43545 times)
  7. GSM click (30473 times)
  8. mikroSDK (29183 times)
  9. PID Library (27174 times)
  10. microSD click (26850 times)
Libstock prefers package manager

Package Manager

We strongly encourage users to use Package manager for sharing their code on Libstock website, because it boosts your efficiency and leaves the end user with no room for error. [more info]

< Back
mikroSDK Library

4x4 Key Click

Rating:

0

Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.17

mikroSDK Library: 2.0.0.0

Category: Pushbutton/Switches

Downloaded: 395 times

Not followed.

License: MIT license  

4x4 Key Click carries a 16 button keypad. The design of the board — inputs are read by a pair of connected 8-bit parallel-in serial-out shift registers — allows for multiple key presses at the same time.

No Abuse Reported

Do you want to subscribe in order to receive notifications regarding "4x4 Key Click" changes.

Do you want to unsubscribe in order to stop receiving notifications regarding "4x4 Key Click" changes.

Do you want to report abuse regarding "4x4 Key Click".

  • mikroSDK Library 1.0.0.0
  • Comments (0)

mikroSDK Library Blog


4x4 Key Click

4x4 Key Click carries a 16 button keypad. The design of the board — inputs are read by a pair of connected 8-bit parallel-in serial-out shift registers — allows for multiple key presses at the same time.

4x4key_click.png

Click Product page


Click library

  • Author : Nenad Filipovic
  • Date : Nov 2019.
  • Type : SPI type

Software Support

We provide a library for the 4x4Key Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for 4x4Key Click driver.

Standard key functions :

  • Config Object Initialization function.

    void c4x4key_cfg_setup ( c4x4key_cfg_t *cfg );

  • Initialization function.

    C4X4KEY_RETVAL c4x4key_init ( c4x4key_t ctx, c4x4key_cfg_t cfg );

  • Click Default Configuration function.

    void c4x4key_default_cfg ( c4x4key_t *ctx );

Example key functions :

  • Get 16-bit data function.

    uint16_t c4x4key_get_data ( c4x4key_t *ctx );

  • Get position pressed button function.

    uint8_t c4x4key_get_btn_position ( c4x4key_t *ctx );

Examples Description

This is a example which demonstrates the use of 4x4 Key Click board. Detects and logs whether any of the buttons is pressed.

The demo application is composed of two sections :

Application Init

Configuring clicks and log objects.


void application_init ( void )
{
    log_cfg_t log_cfg;
    c4x4key_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_printf( &logger, "- Application Init -\r\n" );
    log_printf( &logger, "--------------------\r\n" );

    //  Click initialization.

    c4x4key_cfg_setup( &cfg );
    C4X4KEY_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    c4x4key_init( &c4x4key, &cfg );

    btn_data_old = 0;

    log_printf( &logger, "   4x4 Key Click\r\n" );
    log_printf( &logger, "--------------------\r\n" );
    log_printf( &logger, "  Press any button\r\n" );
    log_printf( &logger, "--------------------\r\n" );
}

Application Task

This is a example which demonstrates the use of 4x4 Key Click board. Detects and logs whether any of the buttons is pressed. Results are being sent to the Usart Terminal where you can track their changes. All data logs on usb uart when the button is triggered.


void application_task ( void )
{
    uint16_t btn_data;

    btn_data = c4x4key_get_data( &c4x4key );

    if ( btn_data_old != btn_data )
    {
        if ( btn_data == C4X4KEY_BUTTON_0 )
        {
            log_printf( &logger, "         0\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_1 )
        {
            log_printf( &logger, "         1\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_2 )
        {
            log_printf( &logger, "         2\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_3 )
        {
            log_printf( &logger, "         3\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_4 )
        {
            log_printf( &logger, "         4\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_5 )
        {
            log_printf( &logger, "         5\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_6 )
        {
            log_printf( &logger, "         6\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_7 )
        {
            log_printf( &logger, "         7\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_8 )
        {
            log_printf( &logger, "         8\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_9 )
        {
            log_printf( &logger, "         9\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_A )
        {
            log_printf( &logger, "         A\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_B )
        {
            log_printf( &logger, "         B\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_C )
        {
            log_printf( &logger, "         C\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_D )
        {
            log_printf( &logger, "         D\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_STAR )
        {
            log_printf( &logger, "         *\r\n" );
        }

        if ( btn_data == C4X4KEY_BUTTON_HASH )
        {
            log_printf( &logger, "         #\r\n" );
        }

        btn_data_old = btn_data;
    }
} 

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.4x4Key

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.


ALSO FROM THIS AUTHOR

Thyone-I Click

0

Thyone-I Click is a compact add-on board for wireless communication in various devices like control systems, remote controls, and sensor nodes. This board features the WIRL-PRO2 Thyone-I (2.1.0.4021000) module from Würth Elektronik. It operates in the 2.4GHz license-free band, ensuring secure and reliable data transmission in both point-to-point and mesh configurations. It features versatile connectivity options with onboard and external antenna support, a data transmission rate of up to 2Mbit/s, and embedded security with hardware-accelerated encryption.

[Learn More]

Hydrogen Click

0

Hydrogen Click carries an MQ-8 sensor for hydrogen (H2). The gas sensing layer on the sensor unit is made of tin dioxide (SnO2), which has lower conductivity in clean air.

[Learn More]

Current 6 Click

0

Current 6 Click is a compact add-on board providing a precise and accurate current sensing solution. This board features the MAX40080, a fast-response bi-directional current-sense amplifier from Analog Devices. The device features ultra-low 5uV input offset voltage, very-low 0.2% gain error, and includes an analog-to-digital converter with programmable sample rate and 12-bit resolution featuring I2C compatible interface. It also features a wake-up current-threshold and auto-shutdown mode when the I2C is inactive, both designed to minimize power consumption. The current-shunt monitor can measure voltage signals on common-mode voltages ranging from -0.1V (ground sensing) to 36V, independent of the supply voltage. This Click board™ delivers higher performance to industrial control and automation applications, load and power supplies monitoring, telecom equipment, and many more.

[Learn More]