TCA9548 I2CScanner Arduino

/**
 * TCA9548 I2CScanner.ino -- I2C bus scanner for Arduino
 *
 * Based on https://playground.arduino.cc/Main/I2cScanner/
 *
 */

#include "Wire.h"

#define TCAADDR 0x70

void tcaselect(uint8_t i) {
  if (i > 7) return;
 
  Wire.beginTransmission(TCAADDR);
  Wire.write(1 << i);
  Wire.endTransmission();  
}


// standard Arduino setup()
void setup()
{
    while (!Serial);
    delay(1000);

    Wire.begin();
    
    Serial.begin(115200);
    Serial.println("\nTCAScanner ready!");
    
    for (uint8_t t=0; t<8; t++) {
      tcaselect(t);
      Serial.print("TCA Port #"); Serial.println(t);

      for (uint8_t addr = 0; addr<=127; addr++) {
        if (addr == TCAADDR) continue;

        Wire.beginTransmission(addr);
        if (!Wire.endTransmission()) {
          Serial.print("Found I2C 0x");  Serial.println(addr,HEX);
        }
      }
    }
    Serial.println("\ndone");
}

void loop() 
{
}

Source: learn.adafruit.com

Similar codes

2 votes143 views2 answers
How to make a c++ program run in the background
C++
0 vote159 views1 answer
Wap in c++ to understand function template
C++
0 vote156 views1 answer
Create a bitset of 1024 bits,
C++
-1 vote162 views1 answer
How to write hello world c++
C++
0 vote149 views1 answer
Run c++ program in mac terminal
C++
0 vote142 views1 answer
How to pronounce beaucoup
C++
1 vote148 views1 answer
Draw rect outline sdl2
C++
5 votes151 views1 answer
How to find 2d vector length cpp
C++
4 votes153 views2 answers
C++ reading string
C++
0 vote162 views1 answer
Remove decimal c++
C++