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mikroSDK Library

Thumbwheel click

Rating:

15

Author: MikroElektronika Team

Last Updated: 2019-01-14

Category: Pushbutton/Switches

Downloaded: 1338 times

Not followed.

License: MIT license  

Thumbwheel click is a mikroBUS add-on board with a 10-position rotary sprocket connected to a 1-Wire 8-Channel Addressable Switch.

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mikroSDK Library Blog

Front / Back View

Front / Back View

Thumbwheel front and back view

View full image

Library Description

The library covers all the necessary functions to control Thumbwheel Click board. Library performs the communication with the device via 1-Wire protocol by writting to registers and by reading from registers. Library have set configuration function, software reset function and function for getting the position of the thumb wheel.

Key functions:

  • thumbwheel_gpioDriverInit( (T_THUMBWHEEL_P)&_MIKROBUS1_GPIO )
     - Function initializes GPIO driver for the desired MIKROBUS1.

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes GPIO, set RST pin as output.
  • Application Initialization - Initialization driver enable's - GPIO,
         soft reset Thumbwheel Click, set default configuration and start write log.
  • Application Task - (code snippet) This is a example which demonstrates the use of RTC Click board. Thumbwheel Click communicates with register via 1-Wire protocol by write, read and reset DS2408 chip. This example show the position of the thumb wheel when it changes.
    Results are being sent to the Usart Terminal where you can track their changes.
     All data logs write on usb uart changes for every 1 sec.
void applicationTask()
{      
    position = thumbwheel_getPosition();

    if ( positionOld != position )
    {
        IntToStr( position, logText );
        mikrobus_logWrite( " Position : ", _LOG_TEXT );
        mikrobus_logWrite( logText, _LOG_LINE );
        mikrobus_logWrite( "- - - - - - - - - -", _LOG_LINE );
        positionOld = position;
    } 

    Delay_1sec();
}


Additional Functions :

  • void thumbwheel_setConfiguration( uint8_t config ) Set configuration registers of DS2408 chip function.
  • void thumbwheel_softReset() Software reset DS2408 chip function.
  • uint8_t thumbwheel_getPosition() Get the position of the thumb wheel function.
     

Other mikroE Libraries used in the example:

  • One_Wire
  • UART
  • Conversions

Additional notes and information

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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