Key Lock 2 click

Keylock 2 Click carries antistatic process sealed keylock mechanism that has three positions.

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Click library

• Author : MikroE Team
• Date : Nov 2019.
• Type : GPIO type

Software Support

We provide a library for the KeyLock2 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 KeyLock2 Click driver.

Standard key functions :

• Config Object Initialization function.

  void keylock2_cfg_setup ( keylock2_cfg_t *cfg );

• Initialization function.

  KEYLOCK2_RETVAL keylock2_init ( keylock2_t ctx, keylock2_cfg_t cfg );

• Click Default Configuration function.

  void keylock2_default_cfg ( keylock2_t *ctx );

Example key functions :

• This function gets states of pins out1, out2 and out3 on Key Lock 2 click.

  uint8_t keylock2_get_pin_state ( keylock2_t *ctx, uint8_t pin );

• This function gets Position (First, Second, Third) of pins out1, out2 and out3 on Key Lock 2 click.

  uint8_t keylock2_get_position ( keylock2_t *ctx )

Examples Description

Keylock 2 Click carries antistatic process sealed keylock mechanism that has three positions.

The demo application is composed of two sections :

Application Init

Initialization driver init.

void application_init ( void )
{
    log_cfg_t log_cfg;
    keylock2_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.

    keylock2_cfg_setup( &cfg );
    KEYLOCK2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    keylock2_init( &keylock2, &cfg );
}

Application Task

Checks the current key position and logs the current position on the USB UART.

void application_task ( void )
{
    key_position = keylock2_get_position( &keylock2 );

    if ( old_position != key_position )
    {
        if ( key_position == KEYLOCK2_POSITION_1 )
        {
            log_printf( &logger, " -- FIRST position -- \r\n " );
        }
        else if ( key_position == KEYLOCK2_POSITION_2 )
        {
            log_printf( &logger, " -- SECOND position -- \r\n " );
        }
        else
        {
            log_printf( &logger, " -- THIRD position -- \r\n " );
        }
    }
    old_position = key_position;

    Delay_ms ( 500 );
}

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.KeyLock2

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.