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I2C 总线扫描程序
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//Written by Nick Gammon | |
// Date: 20th April 2011 | |
#include <Wire.h> | |
void setup() { | |
Serial.begin (115200); | |
// Leonardo: wait for serial port to connect | |
while (!Serial) | |
{ | |
} | |
Serial.println (); | |
Serial.println ("I2C scanner. Scanning ..."); | |
byte count = 0; | |
Wire.begin(); | |
for (byte i = 1; 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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