Stepper 11 Click

Stepper 11 Click is a compact add-on board that contains a bipolar stepper motor driver. This board features the TB9120AFTG, a two-phase bipolar stepping motor driver with a clock input interface and a PWM constant-current control system from Toshiba Semiconductor.

Click Product page

Click library

• Author : Luka Filipovic
• Date : Jul 2021.
• Type : I2C type

Software Support

We provide a library for the Stepper11 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 Stepper11 Click driver.

Standard key functions :

• stepper11_cfg_setup Config Object Initialization function.

  void stepper11_cfg_setup ( stepper11_cfg_t *cfg );

• stepper11_init Initialization function.

  err_t stepper11_init ( stepper11_t *ctx, stepper11_cfg_t *cfg );

• stepper11_default_cfg Click Default Configuration function.

  err_t stepper11_default_cfg ( stepper11_t *ctx );

Example key functions :

• stepper11_set_step_resolution Set step resolution.

  err_t stepper11_set_step_resolution ( stepper11_t *ctx, uint8_t step_res );

• stepper11_move_motor_angle Move motor in angle value.

  void stepper11_move_motor_angle ( stepper11_t *ctx, float degree, uint8_t speed );

• stepper11_move_motor_step Move motor in step value.

  void stepper11_move_motor_step ( stepper11_t *ctx, uint16_t steps, uint8_t speed );

Example Description

This example showcases the device's ability to control the motor. It initializes the device for control and moves the motor in two directions in a variety of resolutions for 360 degrees.

The demo application is composed of two sections :

Application Init

Initialization of communication modules(I2C, UART) and additional pins for control of device. Then sets default configuration that enables device for motor control.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    stepper11_cfg_t stepper11_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.
    stepper11_cfg_setup( &stepper11_cfg );
    STEPPER11_MAP_MIKROBUS( stepper11_cfg, MIKROBUS_1 );
    err_t init_flag = stepper11_init( &stepper11, &stepper11_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    stepper11_default_cfg ( &stepper11 );

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

Application Task

Firstly it rotates motor in CW direction for 360 degrees in FULL step resolution. Then changes direction in CCW and rotates backwards 360 degrees in 2 different step resolutions (Quarter and 1/16) in 180 degrees each.

void application_task ( void ) 
{
    stepper11_set_step_resolution( &stepper11, STEPPER11_RESOLUTION_FULL );
    stepper11_set_direction( &stepper11, 1 );
    log_info( &logger, " Rotate motor CW for 360 degrees in full step" );
    stepper11_move_motor_angle( &stepper11, 360, STEPPER11_SPEED_FAST );
    Delay_ms ( 1000 );
    stepper11_set_direction( &stepper11, 0 );
    stepper11_set_step_resolution( &stepper11, STEPPER11_RESOLUTION_QUARTER );
    log_info( &logger, " Rotate motor CCW for 180 degrees in half step" );
    stepper11_move_motor_angle( &stepper11, 180, STEPPER11_SPEED_FAST );
    Delay_ms ( 1000 );
    stepper11_set_step_resolution( &stepper11, STEPPER11_RESOLUTION_1div16 );
    log_info( &logger, " Rotate motor CCW for 180 degrees in 1/8 step" );
    stepper11_move_motor_angle( &stepper11, 180, STEPPER11_SPEED_FAST );
    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.Stepper11

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.