Using I2C / SCCB protocol with Omnivision OV7670 camera

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1

Dear all,
I'm new and currently working with the OV7670 camera. Datasheet for the camera. So I would like to use its SCCB protocol, which the datasheet says it is compatible with standard I2C. Yet, I wasn't able to get it working. I'm using the i2c_scanner code for this. Can anyone help me with what I'm doing wrong? Thanks!

code:

#include <Wire.h>
#include <TimerHelpers.h>

const int XCLK_pin = 9;
 
void setup()
{
  pinMode(XCLK_pin, OUTPUT);
  OCR1A = 0;
  Timer1::setMode(4, Timer1::PRESCALE_1, Timer1::TOGGLE_A_ON_COMPARE);


  Wire.begin();
 
  Serial.begin(9600);
  while (!Serial);            
  Serial.println("\nI2C Scanner");
}
 
 
void loop()
{
  byte error, address;
  int nDevices;
 
  Serial.println("Scanning...");
 
  nDevices = 0;
  for(address = 1; address < 127; address++ )
  {
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the address.
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
 
    if (error == 0)
    {
      Serial.print("I2C device found at address 0x");
      if (address<16)
        Serial.print("0");
      Serial.print(address,HEX);
      Serial.println("  !");
 
      nDevices++;
    }
    else if (error==4)
    {
      Serial.print("Unknown error at address 0x");
      if (address<16)
        Serial.print("0");
      Serial.println(address,HEX);
    }    
  }
  if (nDevices == 0)
    Serial.println("No I2C devices found\n");
  else
    Serial.println("done\n");
 
  delay(1000);           // wait 1 second for next scan
}

Wiring:

Arduino | Camera
3.3V------------------------3.3V
|
---------RESET

GND------------------------GND
|
---------PWDN

D9--------------------------XCLK

SDA-------------------------SIO_D

SCL-------------------------SIO_C

That's it! I appreciate any help!