relay7

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Relay 7 Click

Relay 7 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 : Nenad Filipovic
• Date : Nov 2023.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of the Relay 7 Click board by toggling the relay state.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Relay7

Example Key Functions

• relay7_cfg_setup Config Object Initialization function.

void relay7_cfg_setup ( relay7_cfg_t *cfg );

• relay7_init Initialization function.

err_t relay7_init ( relay7_t *ctx, relay7_cfg_t *cfg );

• relay7_default_cfg Click Default Configuration function.

err_t relay7_default_cfg ( relay7_t *ctx );

• relay7_set_relay This function sets the desired state of the selected relay.

err_t relay7_set_relay ( relay7_t *ctx, uint8_t relay_sel, relay7_relay_state_t state );

• relay7_reset_device This function performs a hardware reset of the device.

void relay7_reset_device ( relay7_t *ctx );

• relay7_get_interrupt This function returns the interrupt pin logic state.

uint8_t relay7_get_interrupt ( relay7_t *ctx );

Application Init

Initialization of I2C module and log UART. After driver initialization, the app executes a default configuration.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    relay7_cfg_t relay7_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.
    relay7_cfg_setup( &relay7_cfg );
    RELAY7_MAP_MIKROBUS( relay7_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == relay7_init( &relay7, &relay7_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( RELAY7_ERROR == relay7_default_cfg ( &relay7 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

The demo application toggles the state of all relays every 5 seconds. The results are sent to the UART terminal, where you can monitor their changes.

void application_task ( void ) 
{
    for ( uint8_t relay_sel = RELAY7_SEL_REL1; relay_sel <= RELAY7_SEL_REL4; relay_sel++ )
    {
        if ( RELAY7_OK == relay7_set_relay( &relay7, relay_sel, relay_state ) )
        {
            log_printf( &logger, " Relay %d ", ( uint16_t ) relay_sel );
            if ( RELAY7_STATE_OPEN == relay_state )
            {
                log_printf( &logger, " normally open state\r\n" );
            }
            else
            {
                log_printf( &logger, " normally close state\r\n" );
            }
        }
        Delay_ms ( 1000 );
    }
    relay_state = ~relay_state;
    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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