capslider2

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CAP Slider 2 Click

CAP Slider 2 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

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

Software Support

Example Description

This application could be used for controlling various devices.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.CapSlider2

Example Key Functions

• capslider2_cfg_setup Config Object Initialization function.

void capslider2_cfg_setup ( capslider2_cfg_t *cfg );

• capslider2_init Initialization function.

err_t capslider2_init ( capslider2_t *ctx, capslider2_cfg_t *cfg );

• capsldr2_write_reg Generic Write function.

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

• capsldr2_read_reg Generic Read function.

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

• capsldr2_check_data_ready Data Ready Check function.

uint8_t capsldr2_check_data_ready( capslider2_t *ctx );

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.

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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