root / arduino-1.0 / libraries / Firmata / examples / SimpleAnalogFirmata / SimpleAnalogFirmata.ino @ 58d82c77
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1 | 58d82c77 | Tom Mullins | /* |
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2 | * Firmata is a generic protocol for communicating with microcontrollers |
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3 | * from software on a host computer. It is intended to work with |
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4 | * any host computer software package. |
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5 | * |
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6 | * To download a host software package, please clink on the following link |
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7 | * to open the download page in your default browser. |
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8 | * |
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9 | * http://firmata.org/wiki/Download |
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10 | */ |
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11 | |||
12 | /* Supports as many analog inputs and analog PWM outputs as possible. |
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13 | * |
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14 | * This example code is in the public domain. |
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15 | */ |
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16 | #include <Firmata.h> |
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17 | |||
18 | byte analogPin = 0; |
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19 | |||
20 | void analogWriteCallback(byte pin, int value) |
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21 | { |
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22 | if (IS_PIN_PWM(pin)) { |
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23 | pinMode(PIN_TO_DIGITAL(pin), OUTPUT); |
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24 | analogWrite(PIN_TO_PWM(pin), value); |
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25 | } |
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26 | } |
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27 | |||
28 | void setup() |
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29 | { |
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30 | Firmata.setFirmwareVersion(0, 1); |
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31 | Firmata.attach(ANALOG_MESSAGE, analogWriteCallback); |
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32 | Firmata.begin(57600); |
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33 | } |
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34 | |||
35 | void loop() |
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36 | { |
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37 | while(Firmata.available()) { |
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38 | Firmata.processInput(); |
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39 | } |
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40 | // do one analogRead per loop, so if PC is sending a lot of |
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41 | // analog write messages, we will only delay 1 analogRead |
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42 | Firmata.sendAnalog(analogPin, analogRead(analogPin)); |
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43 | analogPin = analogPin + 1; |
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44 | if (analogPin >= TOTAL_ANALOG_PINS) analogPin = 0; |
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45 | } |