Brushless 8 Click

Brushless 8 Click is a compact add-on board suitable for controlling BLDC motors with any MCU. This board features the TC78B042FTG, a sine-wave PWM drive three-phase full-wave brushless motor controller from Toshiba Semiconductor.

Click Product page

Click library

• Author : Nikola Peric
• Date : Mar 2022.
• Type : PWM type

Software Support

We provide a library for the Brushless8 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 Brushless8 Click driver.

Standard key functions :

• Config Object Initialization function.

  void brushless8_cfg_setup ( brushless8_cfg_t *cfg );

• Initialization function.

  BRUSHLESS8_RETVAL brushless8_init ( brushless8_t ctx, brushless8_cfg_t cfg );

• Click Default Configuration function.

  void brushless8_default_cfg ( brushless8_t *ctx );

Example key functions :

• brushless8_cfg_setup function initializes Click configuration structure to initial values.

  brushless8_cfg_setup( &brushless8_cfg );

• brushless8_init function initializes all necessary pins and peripherals used for this Click board.

  BRUSHLESS8_RETVAL init_flag = brushless8_init( &brushless8, &brushless8_cfg );

• brushless8_default_cfg function executes a default configuration of Brushless 8 Click board.

  brushless8_default_cfg ( &brushless8 );

Examples Description

This example showcases how to initialize and use the Brushless 8 Click. This application is a schowcase of controlling speed and direction of brushless motor with hall sesnor.

The demo application is composed of two sections :

Application Init

Initializes the Click board to appropriate settings based on selected mode. Initialization settings are sent through I2C bus and the motor itself is controlled via PWM or DAC over I2C.

• Modes:
  • BRUSHLESS8_PWM
  • BRUSHLESS8_DAC

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    brushless8_cfg_t brushless8_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.

    brushless8_cfg_setup( &brushless8_cfg );
    // Select desired mode.
    brushless8_cfg.ctrl_mod = BRUSHLESS8_MODE;
    BRUSHLESS8_MAP_MIKROBUS( brushless8_cfg, MIKROBUS_1 );

    BRUSHLESS8_RETVAL init_flag = brushless8_init( &brushless8, &brushless8_cfg );
    if ( BRUSHLESS8_OK != init_flag )
    {
        log_error( &logger, "Application Init Error" );
        log_info( &logger, "Please, run program again..." );

        for ( ; ; );
    }

    brushless8_default_cfg ( &brushless8 );

    if ( BRUSHLESS8_PWM == brushless8.ctrl_mod )
    {
        brushless8_set_dac_vout( &brushless8, BRUSHLESS8_DAC_REG_CHN_A_DVSP, 0 );
        brushless8_set_duty_cycle( &brushless8, 0 );
        brushless8_pwm_start( &brushless8 );

        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }

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

Application Task

This example demonstrates the use of Brushless 8 Click board. Brushless 8 Click communicates with the device via I2C driver in order to set adequate voltage level for connected motor. Current PWM/DAC settings being output are sent via logger. Results are being sent to the Usart Terminal where you can track their changes.

void application_task ( void )
{    
    static int8_t duty_cnt = 1;
    static int8_t duty_inc = 1;
    float duty = duty_cnt / 10.0;

    brushless8_set_duty_cycle ( &brushless8, duty );
    log_printf( &logger, "> Duty: %d%%\r\n", ( uint16_t )( duty_cnt * 10 ) );

    Delay_ms ( 500 );

    if ( 10 == duty_cnt ) 
    {
        duty_inc = -1;
    }
    else if ( 0 == duty_cnt ) 
    {
        duty_inc = 1;
    }
    duty_cnt += duty_inc;
}

Note

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Brushless8

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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.