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mikroSDK Library

Brushless 2 click

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Author: MikroElektronika Team

Last Updated: 2019-03-07

Category: Motor Control

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Brushless 2 click carries the DRV10964 BLDC motor controller with an integrated output stage. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over the following pins on the mikroBUS™ line: RST, CS, PWM, INT.

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mikroSDK Library Blog

Brushless 2 click

Brushless 2 click

Front and back view of the Brushless 2 click board.

View full image

Library Description

The library covers all the necessary functions to control Brushless 2 Click board. Brushless 2 Click communicates with the target board viaPWM module. This library contains drivers for rotating in the clockwise or counterclockwise direction and for PWM function: initialization, for set duty ratio, starts and stops PWM module.

Key functions:

  • void brushless2_counterClockwise() - Set the direction of rotation in the counter clockwise direction function.
  • void brushless2_clockwise()- Set the direction of rotation in the clockwise direction function.
  • uint8_t brushless2_getInterruptStatus() -Functions gets Interrupt pin state.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes GPIO and LOG structures sets AN and INT pins as input and sets RST and PWM pins as output.
  • Application Initialization -  Initialization driver enables - GPIO, PWM initialization, set PWM duty cycle and PWM frequency, start PWM, enable the engine, and start to write log.
  • Application Task - (code snippet) This is a example which demonstrates the use of Brushless 2 Click board. Brushless 2 Click communicates with register via PWM interface. It acceleration and slowing down in the counterclockwise direction of rotation ( CCW ). Results are being sent to the Usart Terminal where you can track their changes.
void applicationTask() 
{
    brushless2_counterClockwise();
    mikrobus_logWrite( " Counterclockwise ", _LOG_LINE );
    mikrobus_logWrite( "---------------------", _LOG_LINE );
    mikrobus_logWrite( " acceleration ", _LOG_LINE );
    Delay_1sec();
 
    for ( dutyCycle = 500; dutyCycle < 3000; dutyCycle += 250 )
    {
        brushless2_pwmSetDuty( dutyCycle );
        mikrobus_logWrite( " >", _LOG_TEXT );
        Delay_1sec();
        Delay_1sec();
        Delay_1sec();
    }
 
    mikrobus_logWrite( "", _LOG_LINE );
    mikrobus_logWrite( "---------------------", _LOG_LINE );
    mikrobus_logWrite( " slowing down ", _LOG_LINE );
    Delay_1sec();
 
    for ( dutyCycle = 3000; dutyCycle > 500; dutyCycle -= 250 )
    {
        brushless2_pwmSetDuty( dutyCycle );
        mikrobus_logWrite( " <", _LOG_TEXT );
        Delay_1sec();
        Delay_1sec();
        Delay_1sec();
    }
  
    mikrobus_logWrite( "", _LOG_LINE );
    mikrobus_logWrite( "---------------------", _LOG_LINE );
    Delay_1sec();
}

Additional Functions :

  • uint32_t brushless2_pwmInit( uint16_t freq ) - Initializes the Timer module in PWM mode.
  • void brushless2_pwmSetDuty( uint16_t duty ) - The function changes PWM duty ratio.
  • void brushless2_pwmStart() - Starts appropriate PWM module.
  • void brushless2_pwmStop() - Stops appropriate PWM module.

Other mikroE Libraries used in the example:

  • PWM
  • UART

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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

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