opto3

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Opto 3 Click

Opto 3 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 : Dec 2019.
• Type : GPIO type

Software Support

Example Description

Opto 3 Click to be used in applications that require reinforced galvanic isolation for both their input and output stages.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Opto3

Example Key Functions

• opto3_cfg_setup Config Object Initialization function.

void opto3_cfg_setup ( opto3_cfg_t *cfg ); 

• opto3_init Initialization function.

err_t opto3_init ( opto3_t *ctx, opto3_cfg_t *cfg );

• opto3_get_in1 This function gets input 1 pin state.

uint8_t opto3_get_in1 ( opto3_t *ctx );

• opto3_get_in2 This function gets input 2 pin state.

uint8_t opto3_get_in2 ( opto3_t *ctx );

• opto3_set_out1 This function sets output 1 pin state.

void opto3_set_out1 ( opto3_t *ctx, uint8_t state );

Application Init

Initializes GPIO interface.

void application_init ( void )
{
    log_cfg_t log_cfg;
    opto3_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.
    opto3_cfg_setup( &cfg );
    OPTO3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    opto3_init( &opto3, &cfg );

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

Application Task

Reads the input pins state and sets their respective output pins to the same logic state. The output pins state will be displayed on the USB UART where you can track their changes.

void application_task ( void )
{
    static uint8_t out1_state = 0;
    static uint8_t out2_state = 0;
    uint8_t in1_state = 0;
    uint8_t in2_state = 0;

    in1_state = opto3_get_in1( &opto3 );
    in2_state = opto3_get_in2( &opto3 );
    
    if ( in1_state != out1_state )
    {
        out1_state = in1_state;
        opto3_set_out1( &opto3, out1_state );
        log_printf( &logger, " OUT1 state: %u\r\n", ( uint16_t ) out1_state );
    }
    
    if ( in2_state != out2_state )
    {
        out2_state = in2_state;
        opto3_set_out2( &opto3, out2_state );
        log_printf( &logger, " OUT2 state: %u\r\n", ( uint16_t ) out2_state );
    }
}

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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