Terminal 2 Click

Terminal 2 Click is an adapter Click board™ used as a mikroBUS™ socket expansion board. It provides an easy and elegant solution for adding the external connection capability to the Click board™, plugged on a mikroBUS™ socket. Featuring two 9-position 2.54mm pitch terminal blocks makes it an easy way to expand the development system's connectivity with the mikroBUS™ socket while keeping the bus free to use with any Click board™.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Dec 2021.
• Type : GPIO type

Software Support

We provide a library for the Terminal 2 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Terminal 2 Click driver.

Standard key functions :

• terminal2_cfg_setup Config Object Initialization function.

  void terminal2_cfg_setup ( terminal2_cfg_t *cfg );

• terminal2_init Initialization function.

  err_t terminal2_init ( terminal2_t *ctx, terminal2_cfg_t *cfg );

Example key functions :

• terminal2_set_all_pins_high This function sets all terminal pins to high logic level.

  void terminal2_set_all_pins_high ( terminal2_t *ctx );

• terminal2_set_all_pins_low This function sets all terminal pins to low logic level.

  void terminal2_set_all_pins_low ( terminal2_t *ctx );

• terminal2_toggle_pin This function toggles the specified pin logic level.

  void terminal2_toggle_pin ( digital_out_t *pin );

Example Description

This example demonstates the use of Terminal 2 Click board by toggling all its pins.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger and sets all pins to low logic state.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    terminal2_cfg_t terminal2_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.
    terminal2_cfg_setup( &terminal2_cfg );
    TERMINAL2_MAP_MIKROBUS( terminal2_cfg, MIKROBUS_1 );
    if ( DIGITAL_OUT_UNSUPPORTED_PIN == terminal2_init( &terminal2, &terminal2_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    terminal2_set_all_pins_low ( &terminal2 );

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

Application Task

Toggles all pins from mikroBUS one by one in the span of 1 second between each pin toggle.

void application_task ( void )
{
    /**< Array of pins object addresses. */
    static digital_out_t *pin_addr[ 12 ] =
    {
        &terminal2.mosi,    // 0 MOSI
        &terminal2.miso,    // 1 MISO
        &terminal2.sck,     // 2 SCK
        &terminal2.cs,      // 3 CS
        &terminal2.rst,     // 4 RST
        &terminal2.an,      // 5 AN
        &terminal2.pwm,     // 6 PWM
        &terminal2.int_pin, // 7 INT
        &terminal2.tx_pin,  // 8 TX
        &terminal2.rx_pin,  // 9 RX
        &terminal2.scl,     // 10 SCL
        &terminal2.sda      // 11 SDA
    };
    static uint8_t pin_num = 0;
    log_printf( &logger, " Toggling pin: %u\r\n", ( uint16_t ) pin_num );
    terminal2_toggle_pin ( pin_addr[ pin_num ] );
    Delay_ms ( 1000 );
    terminal2_toggle_pin ( pin_addr[ pin_num ] );

    pin_num++;
    if ( 12 == pin_num )
    {
        pin_num = 0;
    }
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Terminal2

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.