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mikroSDK Library

Brushless 22 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.14

mikroSDK Library: 2.0.0.0

Category: Brushless

Downloaded: 255 times

Not followed.

License: MIT license  

Brushless 22 Click is a compact add-on board suitable for controlling brushless DC (BLDC) motors with any MCU. This board features the MTD6508, a 3-phase full-wave sensorless driver for BLDC motors from Microchip Technology. It features 180° sinusoidal drive, high torque output, and silent drive, rated for an operating voltage range including both mikroBUS™ power rails, and comes with speed control achieved through pulse-width modulation (PWM). Besides, it features several diagnostic circuits and drive-control functions such as motor lock protection, overcurrent limitation, and thermal shutdown protection.

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mikroSDK Library Blog


Brushless 22 Click

Brushless 22 Click is a compact add-on board suitable for controlling brushless DC (BLDC) motors with any MCU. This board features the MTD6508, a 3-phase full-wave sensorless driver for BLDC motors from Microchip Technology. It features 180° sinusoidal drive, high torque output, and silent drive, rated for an operating voltage range including both mikroBUS™ power rails, and comes with speed control achieved through pulse-width modulation (PWM). Besides, it features several diagnostic circuits and drive-control functions such as motor lock protection, overcurrent limitation, and thermal shutdown protection.

brushless22_click.png

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Jan 2022.
  • Type : PWM type

Software Support

We provide a library for the Brushless 22 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 22 Click driver.

Standard key functions :

  • brushless22_cfg_setup Config Object Initialization function.

    void brushless22_cfg_setup ( brushless22_cfg_t *cfg );
  • brushless22_init Initialization function.

    err_t brushless22_init ( brushless22_t *ctx, brushless22_cfg_t *cfg );
  • brushless22_default_cfg Click Default Configuration function.

    err_t brushless22_default_cfg ( brushless22_t *ctx );

Example key functions :

  • brushless22_set_slew_rate_resistance This function sets the slew rate resistance by configuring the onboard digital potentiometer.

    err_t brushless22_set_slew_rate_resistance ( brushless22_t *ctx, uint16_t res_ohm );
  • brushless22_set_duty_cycle This function sets the PWM duty cycle in percentages ( Range[ 0..1 ] ).

    err_t brushless22_set_duty_cycle ( brushless22_t *ctx, float duty_cycle );
  • brushless22_switch_direction This function switches the direction by toggling the DIR pin state.

    void brushless22_switch_direction ( brushless22_t *ctx );

Example Description

This example demonstrates the use of the Brushless 22 Click board by driving the motor in both directions at different speeds.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the Click default configuration.


void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    brushless22_cfg_t brushless22_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.
    brushless22_cfg_setup( &brushless22_cfg );
    BRUSHLESS22_MAP_MIKROBUS( brushless22_cfg, MIKROBUS_1 );
    if ( PWM_ERROR == brushless22_init( &brushless22, &brushless22_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( BRUSHLESS22_ERROR == brushless22_default_cfg ( &brushless22 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

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

Application Task

Controls the motor speed by changing the PWM duty cycle every 500ms. The duty cycle ranges from 0% to 100%. At the minimal speed, the motor switches direction. Each step will be logged on the USB UART where you can track the program flow.

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

    brushless22_set_duty_cycle ( &brushless22, duty );
    log_printf( &logger, "> Duty: %d%%\r\n", ( uint16_t )( duty_cnt * 10 ) );

    if ( 10 == duty_cnt ) 
    {
        duty_inc = -1;
    }
    else if ( 0 == duty_cnt ) 
    {
        duty_inc = 1;
        log_printf( &logger, " Switch direction\r\n\n" );
        brushless22_switch_direction ( &brushless22 );
    }
    duty_cnt += duty_inc;

    Delay_ms ( 500 );
}

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.Brushless22

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.


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