expand4

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Expand 4 Click

Expand 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 : MikroE Team
• Date : Dec 2019.
• Type : SPI type

Software Support

Example Description

Example demonstrates use of Expand 4 Click board.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Expand4

Example Key Functions

• expand4_cfg_setup Config Object Initialization function.

void expand4_cfg_setup ( expand4_cfg_t *cfg );

• expand4_init Initialization function.

err_t expand4_init ( expand4_t *ctx, expand4_cfg_t *cfg );

• expand4_default_cfg Click Default Configuration function.

void expand4_default_cfg ( expand4_t *ctx );

• expand4_write_data Function write 8-bit data function to TPIC6A595 shift register.

void expand4_write_data ( expand4_t *ctx, uint8_t write_command );

• expand4_enable_output Function turn on output buffers - set PWM pin low.

void expand4_enable_output ( expand4_t *ctx );

• expand4_reset Function clear input TPIC6A595 shift register.

void expand4_reset ( expand4_t *ctx );

Application Init

Initialization driver enable's - Clear TPIC6A595 register and start write log.

void application_init ( void )
{
    log_cfg_t log_cfg;
    expand4_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.

    expand4_cfg_setup( &cfg );
    EXPAND4_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    expand4_init( &expand4, &cfg );
    expand4_reset( &expand4 );
}

Application Task

This is a example which demonstrates the use of Expand 4 Click board. In this example, the LED pin mask is transferred via SPI bus, LEDs connected to D0-D7 pins are lit accordingly by turning ON LEDs from D0 to D7 for 3 sec. Results are being sent to the Usart Terminal where you can track their changes. All data logs on usb uart for aproximetly every 3 sec. when the change pin who is connected.

void application_task ( void )
{
    uint8_t pin_position;

    for ( pin_position = 0; pin_position < 8; pin_position++ )
    {
        expand4_disable_output( &expand4 );
        Delay_ms ( 100 );

        expand4_turn_on_by_position( &expand4, pin_position );
        Delay_ms ( 100 );

        log_printf( &logger, " D%d", pin_position );

        expand4_enable_output( &expand4 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

    log_printf( &logger, "\n----------------------------------\n");
}

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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