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I2C port scan

Cautious Centipede answered on November 27, 2022 Popularity 3/10 Helpfulness 1/10

answer I2C port scan

I2C port scan

Comment

#include <Wire.h> //include Wire.h library
 
void setup()
{
  Wire.begin(); // Wire communication begin
  Serial.begin(9600); // The baudrate of Serial monitor is set in 9600
  while (!Serial); // Waiting for Serial Monitor
  Serial.println("\nI2C address Scanner CircuitSchools.com");
}
 
void loop()
{
  byte error, address; //variable for error and I2C address
  int devicecount;
 
  Serial.println("Scanning...");
 
  devicecount = 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("  !");
      devicecount++;
    }
    else if (error == 4)
    {
      Serial.print("Unknown error at address 0x");
      if (address < 16)
        Serial.print("0");
      Serial.println(address, HEX);
    }
  }
  if (devicecount == 0)
    Serial.println("No I2C devices found\n");
  else
    Serial.println("done\n");
 
  delay(5000); // wait 5 seconds for the next I2C scan
}

Popularity 3/10 Helpfulness 1/10 Language c

Source: www.circuitschools.com

Tags: c i2c port

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