root / arduino-1.0 / libraries / Wire / examples / master_reader / master_reader.ino @ 58d82c77
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1 | 58d82c77 | Tom Mullins | // Wire Master Reader |
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2 | // by Nicholas Zambetti <http://www.zambetti.com> |
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3 | |||
4 | // Demonstrates use of the Wire library |
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5 | // Reads data from an I2C/TWI slave device |
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6 | // Refer to the "Wire Slave Sender" example for use with this |
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7 | |||
8 | // Created 29 March 2006 |
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9 | |||
10 | // This example code is in the public domain. |
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11 | |||
12 | |||
13 | #include <Wire.h> |
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14 | |||
15 | void setup() |
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16 | { |
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17 | Wire.begin(); // join i2c bus (address optional for master) |
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18 | Serial.begin(9600); // start serial for output |
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19 | } |
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20 | |||
21 | void loop() |
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22 | { |
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23 | Wire.requestFrom(2, 6); // request 6 bytes from slave device #2 |
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24 | |||
25 | while(Wire.available()) // slave may send less than requested |
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26 | { |
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27 | char c = Wire.read(); // receive a byte as character |
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28 | Serial.print(c); // print the character |
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29 | } |
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30 | |||
31 | delay(500); |
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32 | } |