1-Wire Switch Click

1-Wire Switch Click is a compact add-on board that allows you to switch a device remotely using a 1-wire signal. This board features the DS2413, a dual-channel programmable I/O 1-Wire switch from Analog Devices.

Click Product page

Click library

• Author : Stefan Ilic
• Date : Jan 2023.
• Type : One Wire type

Software Support

We provide a library for the 1-Wire Switch 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for 1-Wire Switch Click driver.

Standard key functions :

• c1wireswitch_cfg_setup Config Object Initialization function.

  void c1wireswitch_cfg_setup ( c1wireswitch_cfg_t *cfg );

• c1wireswitch_init Initialization function.

  err_t c1wireswitch_init ( c1wireswitch_t *ctx, c1wireswitch_cfg_t *cfg );

• c1wireswitch_default_cfg Click Default Configuration function.

  err_t c1wireswitch_default_cfg ( c1wireswitch_t *ctx );

Example key functions :

• c1wireswitch_set_pio_state 1-Wire Switch write specific programmable I/O state function.

  err_t c1wireswitch_set_pio_state ( c1wireswitch_t *ctx, uint8_t pio_a, uint8_t pio_b );

• c1wireswitch_get_pio_state 1-Wire Switch read specific programmable I/O state function.

  err_t c1wireswitch_get_pio_state ( c1wireswitch_t *ctx, uint8_t *pio_a, uint8_t *pio_b );

• c1wireswitch_get_pio_latch_state 1-Wire Switch read programmable I/O latch state function.

  err_t c1wireswitch_get_pio_latch_state ( c1wireswitch_t *ctx, uint8_t *pio_a_latch, uint8_t *pio_b_latch );

Example Description

This library contains API for 1-Wire Switch Click driver. The library initializes and defines the 1-Wire bus drivers to write and read data for state programmable I/O, as well as the default configuration.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs default configuration and sets the PIO A to OFF and PIO B to ON state.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    c1wireswitch_cfg_t c1wireswitch_cfg;  /**< Click config object. */

    /** 
     * 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.
    c1wireswitch_cfg_setup( &c1wireswitch_cfg );
    C1WIRESWITCH_MAP_MIKROBUS( c1wireswitch_cfg, MIKROBUS_1 );
    if ( ONE_WIRE_ERROR == c1wireswitch_init( &c1wireswitch, &c1wireswitch_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( C1WIRESWITCH_ERROR == c1wireswitch_default_cfg ( &c1wireswitch ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    c1wireswitch_set_pio_state( &c1wireswitch, C1WIRESWITCH_PIOA_OFF, C1WIRESWITCH_PIOB_ON );

    log_info( &logger, " Application Task " );
}

Application Task

This example demonstrates the use of the 1-Wire Switch Click board by changing the PIO A state, which is controlling the LED, every time the state of PIO B changes. Change on the PIO B happens when the button is pushed.

void application_task ( void ) 
{
    uint8_t pio_a = 0;
    uint8_t pio_b = 0;

    c1wireswitch_get_pio_state( &c1wireswitch, &pio_a, &pio_b );

    if ( pio_b == C1WIRESWITCH_PIOB_OFF )
    {
        if ( state == 0 )
        {
            c1wireswitch_set_pio_state( &c1wireswitch, C1WIRESWITCH_PIOA_ON, C1WIRESWITCH_PIOB_ON );
            log_printf( &logger, " Button is pressed, LED is ON. \r\n " );
            state = 1;
        }
        else
        {
            c1wireswitch_set_pio_state( &c1wireswitch, C1WIRESWITCH_PIOA_OFF, C1WIRESWITCH_PIOB_ON );
            log_printf( &logger, " Button is pressed, LED is OFF. \r\n " );
            state = 0;
        }
        Delay_ms ( 100 );
    }
    Delay_ms ( 100 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.c1WireSwitch

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. UART terminal is available in all MikroElektronika compilers.