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I2C scanner
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// Robo India Tutorial | |
// Digital Input and Output on LED | |
// Hardware: NodeMCU | |
// scanner. Scanning ... | |
// 23:13:22.263 -> Found address: 39 (0x27) | |
// Done. | |
// 23:13:22.298 -> Found 1 device(s). | |
// Ref- Nick Gammon http://www.gammon.com.au/forum/?id=10896 | |
// I2C Scanner | |
#include <Wire.h> | |
void setup() { | |
Serial.begin(115200); | |
while (!Serial) // Waiting for serial connection | |
{ | |
} | |
Serial.println (); | |
Serial.println ("I2C scanner. Scanning ..."); | |
byte count = 0; | |
Wire.begin(); | |
for (byte i = 0; i < 120; i++) | |
{ | |
Wire.beginTransmission (i); | |
if (Wire.endTransmission () == 0) | |
{ | |
Serial.print ("Found address: "); | |
Serial.print (i, DEC); | |
Serial.print (" (0x"); | |
Serial.print (i, HEX); | |
Serial.println (")"); | |
count++; | |
delay (1); // maybe unneeded? | |
} // end of good response | |
} // end of for loop | |
Serial.println ("Done."); | |
Serial.print ("Found "); | |
Serial.print (count, DEC); | |
Serial.println (" device(s)."); | |
} // end of setup | |
void loop() {} |
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