Silent Step 2 click

Silent Step 2 Click is a compact add-on board that allows extremely smooth and silent operation of the connected motor. This board features the TMC2130, a high-performance two-phase stepper motor driver from Analog Devices. The driver uses an external motor power supply of 4.75 up to 43V to power a 2-phase stepper motor up to 2A coil current (2.5A peak).

click Product page

Click library

• Author : Nenad Filipovic
• Date : Oct 2023.
• Type : I2C/SPI type

Software Support

We provide a library for the Silent Step 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 Silent Step 2 Click driver.

Standard key functions :

• silentstep2_cfg_setup Config Object Initialization function.

  void silentstep2_cfg_setup ( silentstep2_cfg_t *cfg );

• silentstep2_init Initialization function.

  err_t silentstep2_init ( silentstep2_t *ctx, silentstep2_cfg_t *cfg );

• silentstep2_default_cfg Click Default Configuration function.

  err_t silentstep2_default_cfg ( silentstep2_t *ctx );

Example key functions :

• silentstep2_rotate_by_angle Silent Step 2 rotates the shaft through a desired angle function.

  err_t silentstep2_rotate_by_angle ( silentstep2_t *ctx, uint8_t step_speed, float angle, uint16_t res_360 );

• silentstep2_set_direction Silent Step 2 sets the clockwise or counterclockwise direction movement function.

  void silentstep2_set_direction ( silentstep2_t *ctx, uint8_t dir );

Example Description

This example demonstrates the use of Silent Step 2 Click board™ by driving the motor in both directions for a desired rotation angle.

The demo application is composed of two sections :

Application Init

The initialization of I2C and SPI module and log UART. After driver initialization, the app sets the default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    silentstep2_cfg_t silentstep2_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.
    silentstep2_cfg_setup( &silentstep2_cfg );
    SILENTSTEP2_MAP_MIKROBUS( silentstep2_cfg, MIKROBUS_1 );
    err_t init_flag = silentstep2_init( &silentstep2, &silentstep2_cfg );
    if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( SILENTSTEP2_ERROR == silentstep2_default_cfg ( &silentstep2 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "-----------------------------\r\n" );
    Delay_ms ( 100 );
}

Application Task

The application task represents an example that demonstrates the use of the Silent Step 2 Click board™ with which the user can sequentially move the motor. The first part of the sequence executes the clockwise/counterclockwise motor movement for an angle of 90 degrees with a step speed of 50%, all the way to the last sequence of the same movement routine of 360 degree angle with a step speed of 90%. Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void )
{
    log_printf( &logger, " Clockwise motion\r\n" );
    log_printf( &logger, " Angle of rotation :  90 degrees\r\n" );
    log_printf( &logger, " Step speed        :  50 %%\r\n" );
    silentstep2_set_direction( &silentstep2, SILENTSTEP2_DIRECTION_CLOCKWISE );
    if ( SILENTSTEP2_OK == silentstep2_rotate_by_angle( &silentstep2, 50, 90, SILENTSTEP2_STEP_RES_200 ) )
    {
        log_printf( &logger, "-----------------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

    log_printf( &logger, " Counterclockwise motion\r\n" );
    log_printf( &logger, " Angle of rotation :  180 deg\r\n" );
    log_printf( &logger, " Step speed        :  50 %%\r\n" );
    silentstep2_set_direction( &silentstep2, SILENTSTEP2_DIRECTION_COUNTERCLOCKWISE );
    if ( SILENTSTEP2_OK == silentstep2_rotate_by_angle( &silentstep2, 50, 180, SILENTSTEP2_STEP_RES_200 ) )
    {
        log_printf( &logger, "-----------------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

    log_printf( &logger, " Clockwise motion\r\n" );
    log_printf( &logger, " Angle of rotation : 270 deg\r\n" );
    log_printf( &logger, " Step speed        :  50 %% \r\n" );
    silentstep2_set_direction( &silentstep2, SILENTSTEP2_DIRECTION_CLOCKWISE );
    if ( SILENTSTEP2_OK == silentstep2_rotate_by_angle( &silentstep2, 50, 270, SILENTSTEP2_STEP_RES_200 ) )
    {
        log_printf( &logger, "-----------------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

    log_printf( &logger, " Counterclockwise motion\r\n" );
    log_printf( &logger, " Angle of rotation : 360 deg\r\n" );
    log_printf( &logger, " Step speed        : 90 %%\r\n" );
    silentstep2_set_direction( &silentstep2, SILENTSTEP2_DIRECTION_COUNTERCLOCKWISE );
    if ( SILENTSTEP2_OK == silentstep2_rotate_by_angle( &silentstep2, 90, 360, SILENTSTEP2_STEP_RES_200 ) )
    {
        log_printf( &logger, "-----------------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

    log_printf( &logger, " Clockwise motion\r\n" );
    log_printf( &logger, " Angle of rotation : 360 deg\r\n" );
    log_printf( &logger, " Step speed        : 90 %% \r\n" );
    silentstep2_set_direction( &silentstep2, SILENTSTEP2_DIRECTION_CLOCKWISE );
    if ( SILENTSTEP2_OK == silentstep2_rotate_by_angle( &silentstep2, 90, 360, SILENTSTEP2_STEP_RES_200 ) )
    {
        log_printf( &logger, "-----------------------------\r\n" );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }
}

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.SilentStep2

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.