Brushless 24 Click

Brushless 24 Click is a compact add-on board that controls brushless DC (BLDC) motors with any MCU. This board features the DRV10866, a 3- phase sensorless motor driver from Texas Instruments with integrated power MOSFETs with current drive capability up to 800mA peak. The DRV10866 implements a 150° commutation (sensorless BEMF control scheme) for a 3-phase motor alongside a synchronous rectification mode of operation that achieves increased efficiency for motor driver applications. Besides choosing the motor speed and a wide operating voltage range of up to 5V, it also has several built-in protection circuits, such as undervoltage, lock detection, voltage surge protection, and overtemperature.

Click Product page

Click library

• Author : Stefan Ilic
• Date : Nov 2022.
• Type : PWM type

Software Support

We provide a library for the Brushless 24 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 Brushless 24 Click driver.

Standard key functions :

• brushless24_cfg_setup Config Object Initialization function.

  void brushless24_cfg_setup ( brushless24_cfg_t *cfg );

• brushless24_init Initialization function.

  err_t brushless24_init ( brushless24_t *ctx, brushless24_cfg_t *cfg );

• brushless24_default_cfg Click Default Configuration function.

  err_t brushless24_default_cfg ( brushless24_t *ctx );

Example key functions :

• brushless24_set_duty_cycle Brushless 24 sets PWM duty cycle.

  err_t brushless24_set_duty_cycle ( brushless24_t *ctx, float duty_cycle );

• brushless24_pwm_start Brushless 24 start PWM module.

  err_t brushless24_pwm_start ( brushless24_t *ctx );

• brushless24_get_int_state Brushless 24 get INT pin state.

  uint8_t brushless24_get_int_state ( brushless24_t *ctx );

Example Description

This application is a schowcase of controlling speed of brushless motor using Brushless 24 Click.

The demo application is composed of two sections :

Application Init

Initialization of LOG, PWM module and additional pins.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    brushless24_cfg_t brushless24_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.
    brushless24_cfg_setup( &brushless24_cfg );
    BRUSHLESS24_MAP_MIKROBUS( brushless24_cfg, MIKROBUS_1 );
    if ( PWM_ERROR == brushless24_init( &brushless24, &brushless24_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( BRUSHLESS24_ERROR == brushless24_default_cfg ( &brushless24 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

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

Application Task

In a span of second changes duty cycle from 0 to 100% which is changing speed of the motor.

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

    brushless24_set_duty_cycle ( &brushless24, duty );
    log_printf( &logger, "> Duty: %d%%\r\n", ( uint16_t )( duty_cnt * 10 ) );

    Delay_ms ( 1000 );

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

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.Brushless24

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.