DRV8234 motor driver with Arduino

Using Arduino Motors, Mechanics, Power and CNC
1

I am trying to run DRV8234 motor driver with arduino (datasheet).

I have the following code:

#include <Wire.h>

uint8_t write_address = 0x60, CONFIG4_REG=0x0D;
uint8_t config4_value = 0x00; // PMODE = 0 (EN/PH Mode), I2C_BC = 1
int in1 = 35, in2 = 34;

void setup() {
  Serial.begin(115200);
  Serial.println("\nI2C Scanner");
  // pinMode(in1, OUTPUT); 
  // pinMode(in2, OUTPUT);
  // digitalWrite(in1, HIGH);
  // digitalWrite(in2, HIGH); 
  Wire.begin();
  configureDRV8234();
}

void loop() {
}

int configFeedback_1 = 99;

void configureDRV8234() {
  // Step 1: Enable I2C_BC in CONFIG4 Register
  writeRegister(CONFIG4_REG, config4_value);
  Serial.println("DRV8234 configured for EN/PH mode");
}

// Function to write to a register via I2C
void writeRegister(uint8_t reg, uint8_t value) {

  Wire.beginTransmission(0x60); // A0 & A1 are both tied to ground
  Wire.write(byte(0x09)); // CONFIG_REGISTER 0 address
  Wire.write(byte(0b1000000)); // Enabling outputs
  configFeedback_1 = Wire.endTransmission(false);
  Serial.print("Config REG_1: ");
  Serial.println(configFeedback_1, DEC);

  Wire.requestFrom(0x60, 2);

  if(2 <= Wire.available()) {    
    Wire.read();
    Wire.read();    
  }
  delay(100);

  Wire.beginTransmission(0x60); // A0 & A1 are both tied to ground
  Wire.write(byte(0x0D)); // CONFIG 4 register
  Wire.write(byte(0b00000111)); // enabling bridge control by input pins. Both pins are high
  configFeedback_1 = Wire.endTransmission(false);
  Serial.print("Config REG_4: ");
  Serial.println(configFeedback_1, DEC);

  Wire.requestFrom(0x60, 2);

  if(2 <= Wire.available()) {    
    Wire.read();
    Wire.read();    
  }
  delay(100);
}

This code doesn't seem to be working. Can someone help me with this.

2

You need to provide a closer description of " doesn't seem to be working".
Did You write the code?
Please post schematics.

3

Which "Arduino" are you using?

It is connected like this?
(Ref: https://www.ti.com/lit/ds/symlink/drv8234.pdf?ts=1732212929454)

image
image446×264 21.7 KB

Post your driver image/datasheet link.

4

I am using esp32 dev module: ESP32-DEVKITC-32UE Espressif Systems | Development Boards, Kits, Programmers | DigiKey

5

Yes. It is connected according to the given typical application connection in datasheet. As well as I have drv8234 evm, the code is not working on that as well if I only connect SDA, SCL to esp32 and give A0, A1 ground and have common ground.

6

Post your driver image/datasheet link.

7
8

The motor doesn't seem to be moving even when I set the config registers correctly to have it moving.
Yes I wrote the code.
Datasheet: https://www.ti.com/lit/ds/symlink/drv8234.pdf?ts=1731522349395&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FDRV8234%253FkeyMatch%253DDRV8234%2526tisearch%253Duniversal_search%2526usecase%253DGPN-ALT

The schematic is same as in the typical application section of the datasheet.

9

Can you please try this code? It should control only the motor output in PH/EN mode. Is this board recognized by I2C scanner?

#include <Wire.h>
#define ADDR 0x60

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Wire.begin();
  writeI2CByte(0x09, 0b11100000);//BIT7 from CONFIG0 set to 1 in order to enable output EN_OUT
  writeI2CByte(0x0D, 0b00110100);//CONFIG4, 0011 default 0 PH/EN 1 I2C X EN_IN1 X PH_IN2, where x controls those inputs from i2c
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println(">>forward>>");
  writeI2CByte(0x0D, 0b00110111);//forward
  delay(5000);
  Serial.println("<reverse<<");
  writeI2CByte(0x0D, 0b00110110);//reverse
  delay(5000);
  Serial.println("><brake><");
  writeI2CByte(0x0D, 0b00110100);//brake
  delay(5000);
}

void writeI2CByte(byte data_addr, byte data){
  Wire.beginTransmission(ADDR);
  Wire.write(data_addr);
  Wire.write(data);
  Wire.endTransmission();
}

This should be correct now. I forgot the binary for all data (0b).