mirror of
https://github.com/arduino/Arduino.git
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230 lines
8.5 KiB
C++
230 lines
8.5 KiB
C++
/*
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Serial Call and Response in ASCII
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Language: Wiring/Arduino
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This program sends an ASCII A (byte of value 65) on startup
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and repeats that until it gets some data in.
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Then it waits for a byte in the serial port, and
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sends three ASCII-encoded, comma-separated sensor values,
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truncated by a linefeed and carriage return,
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whenever it gets a byte in.
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Thanks to Greg Shakar and Scott Fitzgerald for the improvements
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The circuit:
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* potentiometers attached to analog inputs 0 and 1
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* pushbutton attached to digital I/O 2
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Created 26 Sept. 2005
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by Tom Igoe
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modified 9 Apr 2012
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by Tom Igoe and Scott Fitzgerald
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/SerialCallResponseASCII
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*/
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int firstSensor = 0; // first analog sensor
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int secondSensor = 0; // second analog sensor
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int thirdSensor = 0; // digital sensor
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int inByte = 0; // incoming serial byte
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void setup()
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{
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// start serial port at 9600 bps and wait for port to open:
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Serial.begin(9600);
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while (!Serial) {
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; // wait for serial port to connect. Needed for Leonardo only
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}
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pinMode(2, INPUT); // digital sensor is on digital pin 2
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establishContact(); // send a byte to establish contact until receiver responds
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}
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void loop()
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{
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// if we get a valid byte, read analog ins:
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if (Serial.available() > 0) {
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// get incoming byte:
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inByte = Serial.read();
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// read first analog input:
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firstSensor = analogRead(A0);
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// read second analog input:
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secondSensor = analogRead(A1);
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// read switch, map it to 0 or 255L
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thirdSensor = map(digitalRead(2), 0, 1, 0, 255);
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// send sensor values:
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Serial.print(firstSensor);
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Serial.print(",");
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Serial.print(secondSensor);
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Serial.print(",");
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Serial.println(thirdSensor);
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}
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}
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void establishContact() {
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while (Serial.available() <= 0) {
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Serial.println("0,0,0"); // send an initial string
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delay(300);
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}
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}
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/*
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Processing code to run with this example:
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// This example code is in the public domain.
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import processing.serial.*; // import the Processing serial library
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Serial myPort; // The serial port
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float bgcolor; // Background color
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float fgcolor; // Fill color
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float xpos, ypos; // Starting position of the ball
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void setup() {
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size(640,480);
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// List all the available serial ports
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println(Serial.list());
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// I know that the first port in the serial list on my mac
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// is always my Arduino module, so I open Serial.list()[0].
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// Change the 0 to the appropriate number of the serial port
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// that your microcontroller is attached to.
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myPort = new Serial(this, Serial.list()[0], 9600);
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// read bytes into a buffer until you get a linefeed (ASCII 10):
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myPort.bufferUntil('\n');
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// draw with smooth edges:
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smooth();
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}
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void draw() {
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background(bgcolor);
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fill(fgcolor);
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// Draw the shape
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ellipse(xpos, ypos, 20, 20);
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}
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// serialEvent method is run automatically by the Processing applet
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// whenever the buffer reaches the byte value set in the bufferUntil()
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// method in the setup():
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void serialEvent(Serial myPort) {
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// read the serial buffer:
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String myString = myPort.readStringUntil('\n');
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// if you got any bytes other than the linefeed:
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myString = trim(myString);
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// split the string at the commas
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// and convert the sections into integers:
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int sensors[] = int(split(myString, ','));
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// print out the values you got:
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for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
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print("Sensor " + sensorNum + ": " + sensors[sensorNum] + "\t");
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}
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// add a linefeed after all the sensor values are printed:
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println();
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if (sensors.length > 1) {
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xpos = map(sensors[0], 0,1023,0,width);
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ypos = map(sensors[1], 0,1023,0,height);
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fgcolor = sensors[2];
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}
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// send a byte to ask for more data:
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myPort.write("A");
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}
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*/
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/*
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Max/MSP version 5 patch to run with this example:
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----------begin_max5_patcher----------
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-----------end_max5_patcher-----------
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*/
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