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mikroSDK Library

CAP Slider 2 Click

Rating:

0

Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.18

mikroSDK Library: 2.0.0.0

Category: Capacitive

Downloaded: 225 times

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License: MIT license  

This application use for controlling various devices

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


CAP Slider 2 Click

CAP Slider 2 Click is a capacitive touch sensor with XY cross shaped electrodes integrated on a Click board™. This Click can sense touch even through plastic, wood, or other dielectric materials, which can be used to protect the surface of the PCB and the sensor pad trace itself

capslider2_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : Jan 2020.
  • Type : I2C type

Software Support

We provide a library for the CapSlider2 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 CapSlider2 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void capslider2_cfg_setup ( capslider2_cfg_t *cfg );

  • Initialization function.

    CAPSLIDER2_RETVAL capslider2_init ( capslider2_t ctx, capslider2_cfg_t cfg );

Example key functions :

  • Generic Write function

    uint8_t capsldr2_write_reg ( capslider2_t ctx, uint8_t register_address, uint8_t data_in, uint8_t n_bytes );

  • Generic Read function

    uint8_t capsldr2_read_reg ( capslider2_t ctx, uint8_t register_address, uint8_t data_out, uint8_t n_bytes );

  • Data Ready Check function

    uint8_t capsldr2_check_data_ready ( capslider2_t *ctx );

Examples Description

This application could be used for controlling various devices.

The demo application is composed of two sections :

Application Init

Initializes I2C interface, performs the device reset and configurations and sets the desired threshold value which determines sensor sensitivity.


void application_init ( void )
{
    log_cfg_t log_cfg;
    capslider2_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.

    capslider2_cfg_setup( &cfg );
    CAPSLIDER2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    capslider2_init( &capslider2, &cfg );

    Delay_ms ( 500 );

    cnt = 0;
    wheel_avrg1 = 0;
    wheel_avrg2 = 0;

    capsldr2_reset( &capslider2 );
    Delay_ms ( 500 );

    capsldr2_enable_chann( &capslider2, CAPSLDR2_CH0_PROX_EN | CAPSLDR2_CH1_EN | CAPSLDR2_CH2_EN | CAPSLDR2_CH3_EN | CAPSLDR2_CH4_EN | CAPSLDR2_CH5_EN | CAPSLDR2_CH6_EN | CAPSLDR2_CH7_EN | CAPSLDR2_CH8_EN | CAPSLDR2_CH9_EN );
    capsldr2_config( &capslider2 );
    capsldr2_set_threshold( &capslider2, 0x04 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_printf( &logger, "CAP Slider 2 is initialized\r\n" );

}

Application Task

Checks for data ready and then read capacitance from all channels. There are two sliders on the clik board (X and Y). X slider selects which LEDs are being activated, while Y slider increases/decreases the LEDs intensity.


void application_task ( void )
{
    uint16_t data_wheel1;
    uint16_t data_wheel2;
    uint8_t ready_check;

    ready_check = capsldr2_check_data_ready( &capslider2 );

    if (ready_check == CAPSLDR2_DATA_READY)
    {
        capsldr2_get_data( &capslider2, &data_wheel1, &data_wheel2 );

        wheel_avrg1 += data_wheel1;
        wheel_avrg2 += data_wheel2;
        cnt++;
    }

    if (cnt == 1)
    {
        if ((wheel_avrg2 / cnt) > 1800)
        {
            horizontal_check(  );
            capsldr2_set_output( &capslider2, out_val, out_mode );
        }
        else if (((wheel_avrg2 / cnt) < 1650) && ((wheel_avrg2 / cnt) > 1000))
        {
            vertical_check(  );
            capsldr2_set_output( &capslider2, out_val, out_mode );
        }

        wheel_avrg1 = 0;
        wheel_avrg2 = 0;
        cnt = 0;
    }
}  

Note

In some cases, the user will need to wait several seconds after the Click initialization for the sensor to be stabilized.

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.CapSlider2

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.


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