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mikroSDK Library

SwipeSwitch click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2018-08-24

Category: Measurement

Downloaded: 36 times

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SwipeSwitch click is capacitive touch, gesture, and proximity sensing Click board, which is equipped with the IQS266, an integrated trackpad controller circuit which features ProxSense® and IQ Switch® technologies.

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mikroSDK Library Blog

SwipeSwitch click

SwipeSwitch click

Native view of the SwipeSwitch click board.

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SwipeSwitch click

SwipeSwitch click

Front and back view of the SwipeSwitch click board.

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Library Description

This library contains all the functions required to work with SwipeSwitch click.

Key functions:

  • void swipeswitch_init() - Function for initialization chip.
  • void swipeswitch_goToEventMode() - Function for go to Event mode.
  • uint8_t swipeswitch_waitForReady() - Function for checking RDY pins.

Examples description

The application is composed of the three sections :

  • System Initialization - Initialization I2C module and sets INT pin as INPUT.
  • Application Initialization - Initialization and configuration of the chip for measurement.
  • Application Task - (code snippet) : In the first test mode, it checks whether or not a new event ocurred (TAP or SWIPE). If it did, it writes out data regarding that event via UART. In the second test mode, X and Y coordinates are being read and logged via UART.

Note: After reading data or status registers, there is a certain time which must pass until the device is ready again. The device is ready for a new conversion and reading after the Ready pin is LOW.

void applicationTask()
{
    if(displayMode == 0)
    {
        while(swipeswitch_waitForReady() != 0);
        events = swipeswitch_readEvents();
        while(swipeswitch_waitForReady() != 0);
        gestures = swipeswitch_readGestures();

        if((events & (_SWIPESWITCH_EVENT_SWIPE)) != 0 )
        {
            if((gestures & _SWIPESWITCH_GESTURE_SWIPE_UP) != 0)
            {
                mikrobus_logWrite("SWIPE UP", _LOG_LINE);
            }
            if((gestures & _SWIPESWITCH_GESTURE_SWIPE_DOWN) != 0)
            {
                mikrobus_logWrite("SWIPE DOWN", _LOG_LINE);
            }
            if((gestures & _SWIPESWITCH_GESTURE_SWIPE_LEFT) != 0)
            {
                mikrobus_logWrite("SWIPE LEFT", _LOG_LINE);
            }
            if((gestures & _SWIPESWITCH_GESTURE_SWIPE_RIGHT) != 0)
            {
                mikrobus_logWrite("SWIPE RIGHT", _LOG_LINE);
            }
        }
        else if ((events & (_SWIPESWITCH_EVENT_TAP)) != 0)
        {
            mikrobus_logWrite("TAP", _LOG_LINE);
        }
    }
    else
    {
        while(swipeswitch_waitForReady() != 0);
        xCoordinate = swipeswitch_readXCoordinate();
        while(swipeswitch_waitForReady() != 0);
        yCoordinate = swipeswitch_readYCoordinate();

        if((xCoordinate != oldXCoordinate) || (yCoordinate != oldYCoordinate))
        {
            mikrobus_logWrite("Coordinate : (", _LOG_TEXT);
            IntToStr(xCoordinate, demoText);
            mikrobus_logWrite(demoText, _LOG_TEXT);
            mikrobus_logWrite(",", _LOG_TEXT);
            IntToStr(yCoordinate, demoText);
            mikrobus_logWrite(demoText, _LOG_TEXT);
            mikrobus_logWrite(")", _LOG_LINE);
            oldXCoordinate = xCoordinate;
            oldYCoordinate = yCoordinate;
        }
    }
    Delay_ms( 300 );
}

Other mikroE Libraries used in the example:

  • I2C

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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