wifinina

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WiFi NINA Click

WiFi NINA 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 : Milan Ivancic
• Date : Feb 2026.
• Type : UART type

Software Support

Example Description

Application example shows device capability of connecting to a WiFi network and sending TCP/UDP messages to an echo server.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.WiFiNINA

Example Key Functions

• wifinina_cfg_setup This function initializes Click configuration structure to initial values.

void wifinina_cfg_setup ( wifinina_cfg_t *cfg );

• wifinina_init This function initializes all necessary pins and peripherals used for this Click board.

err_t wifinina_init ( wifinina_t *ctx, wifinina_cfg_t *cfg );

• wifinina_hw_reset This function resets the device by toggling the RST pin state.

void wifinina_hw_reset ( wifinina_t *ctx );

• wifinina_cmd_run This function sends a specified command to the Click module.

void wifinina_cmd_run ( wifinina_t *ctx, uint8_t *cmd );

• wifinina_cmd_set This function sets a value to a specified command of the Click module.

void wifinina_cmd_set ( wifinina_t *ctx, uint8_t *cmd, uint8_t *value );

• wifinina_cmd_get This function is used to get the value of a given command from the Click module.

void wifinina_cmd_get ( wifinina_t *ctx, uint8_t *cmd );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    wifinina_cfg_t wifinina_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.
    wifinina_cfg_setup( &wifinina_cfg );
    WIFININA_MAP_MIKROBUS( wifinina_cfg, MIKROBUS_POSITION_WIFININA );
    if ( UART_ERROR == wifinina_init( &wifinina, &wifinina_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );

    app_state = WIFININA_POWER_UP;
    log_printf( &logger, ">>> APP STATE - POWER UP <<<\r\n\n" );
}

Application Task

Application task is split in few stages:

• WIFININA_POWER_UP:

  Powers up the device, performs a factory reset and reads system information.

• WIFININA_CONFIGURE_CONNECTION:

  Configures connection to WiFi.

• WIFININA_WAIT_FOR_CONNECTION:

  Checks the connection to WiFi access point.

• WIFININA_EXAMPLE:

  Sends a TCP/UDP message to an echo server over a WiFi network.

void application_task ( void )
{
    switch ( app_state )
    {
        case WIFININA_POWER_UP:
        {
            if ( WIFININA_OK == wifinina_power_up( &wifinina ) )
            {
                app_state = WIFININA_CONFIGURE_CONNECTION;
                log_printf( &logger, ">>> APP STATE - CONFIGURE CONNECTION <<<\r\n\n" );
            }
            break;
        }
        case WIFININA_CONFIGURE_CONNECTION:
        {
            if ( WIFININA_OK == wifinina_config_connection( &wifinina ) )
            {
                app_state = WIFININA_WAIT_FOR_CONNECTION;
                log_printf( &logger, ">>> APP STATE - CHECK CONNECTION <<<\r\n\n" );
            }
            break;
        }
        case WIFININA_WAIT_FOR_CONNECTION:
        {
            if ( WIFININA_OK == wifinina_check_connection( &wifinina ) )
            {
                app_state = WIFININA_EXAMPLE;
                log_printf( &logger, ">>> APP STATE - EXAMPLE <<<\r\n\n" );
            }
            break;
        }
        case WIFININA_EXAMPLE:
        {
            wifinina_example( &wifinina );
            break;
        }
        default:
        {
            log_error( &logger, " APP STATE." );
            break;
        }
    }
}

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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