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39 lines
849 B
Plaintext
39 lines
849 B
Plaintext
15 years ago
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// Wire Master Writer
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// by Nicholas Zambetti <http://www.zambetti.com>
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// Demonstrates use of the Wire library
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// Writes data to an I2C/TWI slave device
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// Refer to the "Wire Slave Receiver" example for use with this
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// Created 29 March 2006
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#include <Wire.h>
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void setup()
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{
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Wire.begin(); // join i2c bus (address optional for master)
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Serial.begin(9600);
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}
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byte x = 0;
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void loop()
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{
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Wire.beginTransmission(4); // transmit to device #4
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Wire.send("x is "); // sends five bytes
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Wire.send(x); // sends one byte
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Wire.endTransmission(); // stop transmitting
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//Wire.requestFrom(2,2);
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while(Wire.available()) // loop through all but the last
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{
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char c = Wire.receive(); // receive byte as a character
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Serial.print(c); // print the character
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}
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x++;
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delay(500);
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Serial.print(".");
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}
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