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mikroSDK Library

Brushless 4 click

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Author: MikroElektronika Team

Last Updated: 2018-05-18

Category: Motor Control

Downloaded: 521 times

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Brushless 4 click is a 3 phase sensorless BLDC motor driver, which features a 180° sinusoidal drive, providing high efficiency and low acoustic noise. This type of drivers inherently provides higher torque in general, compared to classical 120° BLDC motor drivers.

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mikroSDK Library Blog

Brushless 4 click

Brushless 4 click

Native view of the Brushless 4 click board.

View full image
Brushless 4 click

Brushless 4 click

Front and back view of the Brushless 4 click board.

View full image

Library Description

The library provides generic functions for working with the Click board.

Key functions:

  • void brushless4_motorParameters(uint8_t poles, uint8_t slots) - Sets the number of poles and slots of the motor. This needs to be set correctly for the calculation to be correct
  • uint16_t brushless4_getSpeed(uint16_t pulseSample) - Calculates the speed of accumulated pulses from the interrupt pin and returns the motor speed value.
  • uint8_t brushless4_intGet() - Returns the state of the interrupt pin.

Example description

The application is composed of three sections:

  • System Initialization - Initializes the GPIO structure.
  • Application Initialization - Initializes the GPIO driver and configures the PWM
    peripheral for controlling the speed of the motor.
  • Application Task - (code snippet) - Increases and decreases the speed of the motor
    demonstrating the speed control.
void applicationTask()
{
 for(i=0;i<pwm_period;i++)
 {
 brushless4_setSpeed(i);
 Delay_ms(10);
 }
 Delay_ms(1000);

 for(i=pwm_period;i>1;i--)
 {
 brushless4_setSpeed(i);
 Delay_ms(10);
 }
 Delay_ms(1000);
}
  • void brushless4_pwmInit() - Initializations of the PWM on the mikroBUS 1.
  • void brushless4_setSpeed(uint16_t speed) - Sets the PWM signal for the motor.


Other MikroElektronika libraries used in the example:

  • PWM Library

Additional notes and information

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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