expand7

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Expand 7 Click

Expand 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 : MikroE Team
• Date : Sep 2020.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of the EXPAND 7 Click.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Expand7

Example Key Functions

• expand7_cfg_setup Config Object Initialization function.

void expand7_cfg_setup ( expand7_cfg_t *cfg ); 

• expand7_init Initialization function.

err_t expand7_init ( expand7_t *ctx, expand7_cfg_t *cfg );

• expand7_reset Reset function

void expand7_reset ( expand7_t *ctx );

• expand7_write_all Set all OUTPUT pins' logic levels function

void expand7_write_all ( expand7_t *ctx, uint8_t value );

• expand7_write_pin Set a single OUTPUT pin's logic level function

void expand7_write_pin ( expand7_t *ctx, uint8_t pin, uint8_t pin_val );

Application Init

Initalizes I2C driver and makes an initial log.

void application_init ( void )
{
    log_cfg_t log_cfg;
    expand7_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.
    expand7_cfg_setup( &cfg );
    EXPAND7_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    expand7_init( &expand7, &cfg );
    Delay_ms ( 100 );
    
    log_printf( &logger, "------------------- \r\n" );
    log_printf( &logger, "   EXPAND 7 Click   \r\n" );
    log_printf( &logger, "------------------- \r\n" );
}

Application Task

This example shows the capabilities of the EXPAND 7 Click by toggling each of the 40 available pins.

void application_task ( void )
{
    expand7_write_all ( &expand7, 0xFF );
    log_printf( &logger, "All pins set to HIGH logic level!\r\n" );
    log_printf( &logger, "---------------------------------\r\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    
    for ( uint8_t pin_num = 0; pin_num < 40; pin_num++ )
    {
        expand7_write_pin( &expand7, pin_num, EXPAND7_LOW );
        log_printf( &logger, "Pin %u is set to LOW logic level!\r\n", ( uint16_t ) pin_num );
        Delay_ms ( 300 );
    }
    log_printf( &logger, "---------------------------------\r\n" );
    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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