Brushless 20 click

Brushless 20 Click is a compact add-on board that controls brushless DC (BLDC) motors with any MCU. This board features the DRV8313, a fully integrated three-phase BLDC motor driver from Texas Instruments. It provides three individually controllable half-H-bridge drivers intended to drive a three-phase BLDC motor, solenoids, or other loads. Each output driver channel consists of N-channel power MOSFETs configured in a 1/2-H-bridge configuration. Besides, it has a wide operating voltage range from 8V to 60V, alongside several built-in protection circuits such as undervoltage, charge pump faults, overcurrent, and overtemperature.

click Product page

Click library

• Author : Stefan Filipovic
• Date : Jul 2022.
• Type : I2C type

Software Support

We provide a library for the Brushless 20 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 20 Click driver.

Standard key functions :

• brushless20_cfg_setup Config Object Initialization function.

  void brushless20_cfg_setup ( brushless20_cfg_t *cfg );

• brushless20_init Initialization function.

  err_t brushless20_init ( brushless20_t *ctx, brushless20_cfg_t *cfg );

• brushless20_default_cfg Click Default Configuration function.

  err_t brushless20_default_cfg ( brushless20_t *ctx );

Example key functions :

• brushless20_perform_com_sequence This function performs a single commutation sequence for the selected rotation direction at a desired speed.

  err_t brushless20_perform_com_sequence ( brushless20_t *ctx, uint8_t dir, uint8_t speed );

• brushless20_drive_motor This function drives the motor for a desired time by performing multiple commutation sequences for the selected rotation direction at a desired speed.

  err_t brushless20_drive_motor ( brushless20_t *ctx, uint8_t dir, uint8_t speed, uint32_t time_ms );

• brushless20_get_fault_pin This function returns the fault pin logic state.

  err_t brushless20_get_fault_pin ( brushless20_t *ctx );

Example Description

This example demonstrates the use of the Brushless 20 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. */
    brushless20_cfg_t brushless20_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.
    brushless20_cfg_setup( &brushless20_cfg );
    BRUSHLESS20_MAP_MIKROBUS( brushless20_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == brushless20_init( &brushless20, &brushless20_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( BRUSHLESS20_ERROR == brushless20_default_cfg ( &brushless20 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

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

Application Task

Drives the motor in both directions and changes the motor speed every 3 seconds approximately. The current driving direction and speed will be displayed on the USB UART.

void application_task ( void )
{
    log_printf ( &logger, "\r\n Driving motor clockwise \r\n" );
    for ( uint8_t speed = BRUSHLESS20_SPEED_MIN; speed <= BRUSHLESS20_SPEED_MAX; speed += 20 )
    {
        log_printf ( &logger, " Speed: %u\r\n", ( uint16_t ) speed );
        if ( BRUSHLESS20_OK != brushless20_drive_motor ( &brushless20, BRUSHLESS20_DIR_CW, speed, 3000 ) )
        {
            log_error ( &logger, " Drive motor " );
        }
    }
    Delay_ms ( 1000 );
    log_printf ( &logger, "\r\n Driving motor counter-clockwise \r\n" );
    for ( uint8_t speed = BRUSHLESS20_SPEED_MIN; speed <= BRUSHLESS20_SPEED_MAX; speed += 20 )
    {
        log_printf ( &logger, " Speed: %u\r\n", ( uint16_t ) speed );
        if ( BRUSHLESS20_OK != brushless20_drive_motor ( &brushless20, BRUSHLESS20_DIR_CCW, speed, 3000 ) )
        {
            log_error ( &logger, " Drive motor " );
        }
    }
    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.Brushless20

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.