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mikroSDK Library

Keylock click

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1

Author: MikroElektronika Team

Last Updated: 2019-03-15

Category: Pushbutton/Switches

Downloaded: 671 times

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License: MIT license  

Keylock click carries a processed sealed key lock mechanism that can be set in three different positions. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over the PWM, INT, and AN pin on the mikroBUS™ line.

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mikroSDK Library Blog

Keylock click

Keylock click

Front and back view of the Keylock click board.

View full image

Library Description

The library covers all the functions necessary to control Keylock click board. Keylock click
communicates with the target board through the AN, PWM and INT line. This library 
offers functions for detecting the state in which the key currently is, as well as fuctions
that allow you to check the state of each of the pins used by Keylock click board.

Key functions:

  • uint8_t keylock_checkPin( uint8_t pin ); - Function is used to check the state of the pin chosen by the user.
  • uint8_t keylock_getPosition();- Function is used to check in which position the key currently is.

Examples description

The application is composed of three sections:

  • System Initialization - Initializes GPIO and LOG structures, sets AN, PWM and INT pins as output.
  • Application Initialization -  Initialization driver enables GPIO and also starts write log.
  • Application Task - (code snippet) This example demonstrates the use of Keylock Click board.
         Detects the position in which the key currently is. Results are being sent to the Usart Terminal,
         where you can track changes.
void applicationTask() 
{
    newState = keylock_getPosition();

    if( oldState != newState )
    {
        if( newState == _KEYLOCK_KEY_POS_1 )
        {
            mikrobus_logWrite( " Position ONE ", _LOG_LINE );
        }
            else if( newState == _KEYLOCK_KEY_POS_2 )
        {
            mikrobus_logWrite( " Position TWO ", _LOG_LINE );
        }

            else if( newState == _KEYLOCK_KEY_POS_3 )
        {
            mikrobus_logWrite( " Position THREE ", _LOG_LINE );
        }
        else
        {
            mikrobus_logWrite( " ERROR!!! ", _LOG_LINE );
        }
    oldState = newState;
    mikrobus_logWrite( "---------------", _LOG_LINE );
    }
    
    Delay_ms( 500 );
}  

Other mikroE Libraries used in the example:

  • UART

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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

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