Last change
on this file since 136 was 136, checked in by ertl-honda, 8 years ago |
ライブラリとOS及びベーシックなサンプルの追加.
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File size:
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1 | // I2C Digital Potentiometer
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2 | // by Nicholas Zambetti <http://www.zambetti.com>
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3 | // and Shawn Bonkowski <http://people.interaction-ivrea.it/s.bonkowski/>
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4 |
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5 | // Demonstrates use of the Wire library
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6 | // Controls AD5171 digital potentiometer via I2C/TWI
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7 |
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8 | // Created 31 March 2006
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9 |
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10 | // This example code is in the public domain.
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11 |
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12 | // This example code is in the public domain.
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13 |
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14 |
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15 | #include <Wire.h>
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16 |
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17 | void setup()
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18 | {
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19 | Wire.begin(); // join i2c bus (address optional for master)
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20 | }
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21 |
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22 | byte val = 0;
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23 |
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24 | void loop()
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25 | {
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26 | Wire.beginTransmission(44); // transmit to device #44 (0x2c)
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27 | // device address is specified in datasheet
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28 | Wire.write(byte(0x00)); // sends instruction byte
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29 | Wire.write(val); // sends potentiometer value byte
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30 | Wire.endTransmission(); // stop transmitting
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31 |
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32 | val++; // increment value
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33 | if(val == 64) // if reached 64th position (max)
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34 | {
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35 | val = 0; // start over from lowest value
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36 | }
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37 | delay(500);
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38 | }
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39 |
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