Brushless 2 Click

Brushless 2 click carries the DRV10964 BLDC motor controller with an integrated output stage from Texas Instruments. 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: AN, RST, CS, PWM, INT.

How the click works

A 3 wire BLDC motor can be connected over the screw terminals; speed is controlled through PWM pin on the mikroBUS™ line. The click also has feedback on the interrupt pin (INT), so you can see exactly how fast the motor is going.

DRV10964 motor driver features

The DRV10964 is a three-phase sensorless motor driver with integrated power MOSFETs. It is specifically designed for high-efficiency, low-noise and low-external component count motor drive applications. The proprietary sensorless windowless 180° sinusoidal control scheme offers ultra-quiet motor drive performance.

The DRV10964 contains an intelligent lock detect function, combined with other internal protection circuits to ensure safe operation.

Specifications

Pinout diagram

This table shows how the pinout on Brushless 2 click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
Resistor setting for configuring the handoff threshold sense	CFG	1	AN	PWM	16	PWM	Speed control input
Motor direction selection	FR	2	RST	INT	15	NC
Speed indicator selector	FGS	3	CS	TX	14	NC
	NC	4	SCK	RX	13	NC
	NC	5	MISO	SCL	12	NC
	NC	6	MOSI	SDA	11	NC
Power supply	+3.3V	7	3.3V	5V	10	+5V	Power supply
Ground	GND	8	GND	GND	9	GND	Ground

Jumpers and settings

Programming

Code examples for Brushless 2 click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

This code example shows how to change the speed and direction of the motor by pressing buttons on the development board.

01 uint8_t const maxPwmDuty = 255;
02 uint8_t currentDuty = 20 ;
03 uint8_t oldstate = 0;
04 
05 void systemInit()
06 {
07     ANCON0 = 0x00;
08     ANCON1 = 0x00;
09     ANCON2 = 0x00;
10     PWM2_Init(5000);
11     PWM2_Start();
12     PWM2_Set_Duty(currentDuty);
13     MOTOR_DIR_PIN_Direction = 0;
14 }
15 
16 void Brushless_2_Init()
17 {
18     MOTOR_DIR_PIN = 1;
19 }
20 
21 void Brushless_2_Task()
22 {
23     if (Button(&PORTB, 1, 1, 1))
24     {
25         currentDuty++;
26         PWM2_Set_Duty(currentDuty);
27         if (currentDuty > maxPwmDuty)      
28            currentDuty = 0;              
29        
30    }
31     
32     if (Button(&PORTB, 5, 1, 1))
33     {                                              
34         oldstate = 1;                              
35    }
36     if (oldstate && Button(&PORTB, 5, 1, 0))
37     {  
38         MOTOR_DIR_PIN = ~MOTOR_DIR_PIN;                              
39        oldstate = 0;  
40     }                               
41 }
42 
43 void main()
44 {
45     systemInit();
46     Brushless_2_Init();
47 
48    while( 1 )
49     {
50             Brushless_2_Task();
51     }
52 }