relay4

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Relay 4 Click

Relay 4 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 : Stefan Filipovic
• Date : Jan 2023.
• Type : GPIO type

Software Support

Example Description

This example demonstrates the use of Relay 4 Click board by toggling the relays state.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Relay4

Example Key Functions

• relay4_cfg_setup Config Object Initialization function.

void relay4_cfg_setup ( relay4_cfg_t *cfg );

• relay4_init Initialization function.

err_t relay4_init ( relay4_t *ctx, relay4_cfg_t *cfg );

• relay4_set_relay1_open This function sets the relay 1 to normally open state by setting the RL1 pin to low logic level.

void relay4_set_relay1_open ( relay4_t *ctx );

• relay4_set_relay1_close This function sets the relay 1 to normally close state by setting the RL1 pin to high logic level.

void relay4_set_relay1_close ( relay4_t *ctx );

• relay4_set_relay2_open This function sets the relay 2 to normally open state by setting the RL2 pin to low logic level.

void relay4_set_relay2_open ( relay4_t *ctx );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    relay4_cfg_t relay4_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.
    relay4_cfg_setup( &relay4_cfg );
    RELAY4_MAP_MIKROBUS( relay4_cfg, MIKROBUS_1 );
    if ( DIGITAL_OUT_UNSUPPORTED_PIN == relay4_init( &relay4, &relay4_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Switches the relays 1 and 2 state every 5 seconds and displays the state on the USB UART.

void application_task ( void )
{
    relay4_set_relay1_open ( &relay4 );
    log_printf( &logger, " Relay 1 set to normally open state\r\n" );
    relay4_set_relay2_close ( &relay4 );
    log_printf( &logger, " Relay 2 set to normally close state\r\n\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    relay4_set_relay1_close ( &relay4 );
    log_printf( &logger, " Relay 1 set to normally close state\r\n" );
    relay4_set_relay2_open ( &relay4 );
    log_printf( &logger, " Relay 2 set to normally open state\r\n\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}

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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