arduino和processing的互動(dòng)

ID:114320 · 發(fā)表于 2016-5-8 01:29

本帖最后由 51黑專家于 2016-5-8 01:30 編輯

   先通過(guò)arduino R3 串口輸出字串，然后用processing來(lái)讀取串口數(shù)據(jù)，并且繪制折線圖進(jìn)行顯示。
arduino源碼：

void setup(){
Serial.begin(115200);
}

void loop(){
  int num = random(0,1023);
  Serial.print("S");
  Serial.println(num);
  delay(100);
  Serial.print("B");
  Serial.println(num);
  delay(100);
Serial.print("Q");
  Serial.println(num);
  delay(100);
}

processing源碼：

/**
THIS PROGRAM WORKS WITH PulseSensorAmped_Arduino-xx ARDUINO CODE
THE PULSE DATA WINDOW IS SCALEABLE WITH SCROLLBAR AT BOTTOM OF SCREEN
PRESS 'S' OR 's' KEY TO SAVE A PICTURE OF THE SCREEN IN SKETCH FOLDER (.jpg)
MADE BY JOEL MURPHY AUGUST, 2012
*/
import processing.serial.*;
PFont font;
Scrollbar scaleBar;
Serial port;
int Sensor; // HOLDS PULSE SENSOR DATA FROM ARDUINO
int IBI; // HOLDS TIME BETWEN HEARTBEATS FROM ARDUINO
int BPM; // HOLDS HEART RATE VALUE FROM ARDUINO
int[] RawY; // HOLDS HEARTBEAT WAVEFORM DATA BEFORE SCALING
int[] ScaledY; // USED TO POSITION SCALED HEARTBEAT WAVEFORM
int[] rate; // USED TO POSITION BPM DATA WAVEFORM
float zoom; // USED WHEN SCALING PULSE WAVEFORM TO PULSE WINDOW
float offset; // USED WHEN SCALING PULSE WAVEFORM TO PULSE WINDOW
color eggshell = color(255, 253, 248);
int heart = 0; // This variable times the heart image 'pulse' on screen
// THESE VARIABLES DETERMINE THE SIZE OF THE DATA WINDOWS
int PulseWindowWidth = 490;
int PulseWindowHeight = 512;
int BPMWindowWidth = 180;
int BPMWindowHeight = 340;
boolean beat = false; // set when a heart beat is detected, then cleared when the BPM graph is advanced
void setup() {
size(700, 600); // Stage size
frameRate(100);
font = loadFont("Arial-BoldMT-24.vlw");
textFont(font);
textAlign(CENTER);
rectMode(CENTER);
ellipseMode(CENTER);
// Scrollbar constructor inputs: x,y,width,height,minVal,maxVal
scaleBar = new Scrollbar (400, 575, 180, 12, 0.5, 1.0); // set parameters for the scale bar
RawY = new int[PulseWindowWidth]; // initialize raw pulse waveform array
ScaledY = new int[PulseWindowWidth]; // initialize scaled pulse waveform array
rate = new int [BPMWindowWidth]; // initialize BPM waveform array
zoom = 0.75; // initialize scale of heartbeat window
// set the visualizer lines to 0
for (int i=0; i<rate.length; i++){
rate[i] = 555; // Place BPM graph line at bottom of BPM Window
}
for (int i=0; i<RawY.length; i++){
RawY[i] = height/2; // initialize the pulse window data line to V/2
}
// GO FIND THE ARDUINO
println(Serial.list()); // print a list of available serial ports
// choose the number between the [] that is connected to the Arduino
port = new Serial(this, Serial.list()[1], 115200); // make sure Arduino is talking serial at this baud rate
port.clear(); // flush buffer
port.bufferUntil('\n'); // set buffer full flag on receipt of carriage return
}
void draw() {
background(0);
noStroke();
// DRAW OUT THE PULSE WINDOW AND BPM WINDOW RECTANGLES
fill(eggshell); // color for the window background
rect(255,height/2,PulseWindowWidth,PulseWindowHeight);
rect(600,385,BPMWindowWidth,BPMWindowHeight);
// DRAW THE PULSE WAVEFORM
// prepare pulse data points
RawY[RawY.length-1] = (1023 - Sensor) - 212; // place the new raw datapoint at the end of the array
zoom = scaleBar.getPos(); // get current waveform scale value
offset = map(zoom,0.5,1,150,0); // calculate the offset needed at this scale
for (int i = 0; i < RawY.length-1; i++) { // move the pulse waveform by
RawY[i] = RawY[i+1]; // shifting all raw datapoints one pixel left
float dummy = RawY[i] * zoom + offset; // adjust the raw data to the selected scale
ScaledY[i] = constrain(int(dummy),44,556); // transfer the raw data array to the scaled array
}
stroke(250,0,0); // red is a good color for the pulse waveform
noFill();
beginShape(); // using beginShape() renders fast
for (int x = 1; x < ScaledY.length-1; x++) {
vertex(x+10, ScaledY[x]); //draw a line connecting the data points
}
endShape();
// DRAW THE BPM WAVE FORM
// first, shift the BPM waveform over to fit then next data point only when a beat is found
if (beat == true){ // move the heart rate line over one pixel every time the heart beats
beat = false; // clear beat flag (beat flag waset in serialEvent tab)
for (int i=0; i<rate.length-1; i++){
rate[i] = rate[i+1]; // shift the bpm Y coordinates over one pixel to the left
}
// then limit and scale the BPM value
BPM = min(BPM,200); // limit the highest BPM value to 200
float dummy = map(BPM,0,200,555,215); // map it to the heart rate window Y
rate[rate.length-1] = int(dummy); // set the rightmost pixel to the new data point value
}
// GRAPH THE HEART RATE WAVEFORM
stroke(250,0,0); // color of heart rate graph
strokeWeight(2); // thicker line is easier to read
noFill();
beginShape();
for (int i=0; i < rate.length-1; i++){ // variable 'i' will take the place of pixel x position
vertex(i+510, rate[i]); // display history of heart rate datapoints
}
endShape();
// DRAW THE HEART AND MAYBE MAKE IT BEAT
fill(250,0,0);
stroke(250,0,0);
// the 'heart' variable is set in serialEvent when arduino sees a beat happen
heart--; // heart is used to time how long the heart graphic swells when your heart beats
heart = max(heart,0); // don't let the heart variable go into negative numbers
if (heart > 0){ // if a beat happened recently,
strokeWeight(8); // make the heart big
}
smooth(); // draw the heart with two bezier curves
bezier(width-100,50, width-20,-20, width,140, width-100,150);
bezier(width-100,50, width-190,-20, width-200,140, width-100,150);
strokeWeight(1); // reset the strokeWeight for next time
// PRINT THE DATA AND VARIABLE VALUES
fill(eggshell); // get ready to print text
text("Pulse Sensor Amped Visualizer 1.1",245,30); // tell them what you are
text("IBI " + IBI + "mS",600,585); // print the time between heartbeats in mS
text(BPM + " BPM",600,200); // print the Beats Per Minute
text("Pulse Window Scale " + nf(zoom,1,2), 150, 585); // show the current scale of Pulse Window
// DO THE SCROLLBAR THINGS
scaleBar.update (mouseX, mouseY);
scaleBar.display();
//
} //end of draw loop
//.............................................scalebar (name of file)............................................................................................................
/**
THIS SCROLLBAR OBJECT IS BASED ON THE ONE FROM THE BOOK "Processing" by Reas and Fry
*/
class Scrollbar{
int x,y; // the x and y coordinates
float sw, sh; // width and height of scrollbar
float pos; // position of thumb
float posMin, posMax; // max and min values of thumb
boolean rollover; // true when the mouse is over
boolean locked; // true when it's the active scrollbar
float minVal, maxVal; // min and max values for the thumb
Scrollbar (int xp, int yp, int w, int h, float miv, float mav){ // values passed from the constructor
x = xp;
y = yp;
sw = w;
sh = h;
minVal = miv;
maxVal = mav;
pos = x - sh/2;
posMin = x-sw/2;
posMax = x + sw/2; // - sh;
}
// updates the 'over' boolean and position of thumb
void update(int mx, int my) {
if (over(mx, my) == true){
rollover = true; // when the mouse is over the scrollbar, rollover is true
} else {
rollover = false;
}
if (locked == true){
pos = constrain (mx, posMin, posMax);
}
}
// locks the thumb so the mouse can move off and still update
void press(int mx, int my){
if (rollover == true){
locked = true; // when rollover is true, pressing the mouse button will lock the scrollbar on
}else{
locked = false;
}
}
// resets the scrollbar to neutral
void release(){
locked = false;
}
// returns true if the cursor is over the scrollbar
boolean over(int mx, int my){
if ((mx > x-sw/2) && (mx < x+sw/2) && (my > y-sh/2) && (my < y+sh/2)){
return true;
}else{
return false;
}
}
// draws the scrollbar on the screen
void display (){
noStroke();
fill(255);
rect(x, y, sw, sh); // create the scrollbar
fill (250,0,0);
if ((rollover == true) || (locked == true)){
stroke(250,0,0);
strokeWeight(8); // make the scale dot bigger if you're on it
}
ellipse(pos, y, sh, sh); // create the scaling dot
strokeWeight(1); // reset strokeWeight
}
// returns the current value of the thumb
float getPos() {
float scalar = sw / sw; // (sw - sh/2);
float ratio = (pos-(x-sw/2)) * scalar;
float p = minVal + (ratio/sw * (maxVal - minVal));
return p;
}
}
//...........................................serialevent (name of file)..........................................................................................................
void serialEvent(Serial port){
String inData = port.readStringUntil('\n');
inData = trim(inData); // cut off white space (carriage return)
if (inData.charAt(0) == 'S'){ // leading 'S' for sensor data
inData = inData.substring(1); // cut off the leading 'S'
Sensor = int(inData); // convert the string to usable int
}
if (inData.charAt(0) == 'B'){ // leading 'B' for BPM data
inData = inData.substring(1); // cut off the leading 'B'
BPM = int(inData); // convert the string to usable int
beat = true; // set beat flag to advance heart rate graph
heart = 20; // begin heart image 'swell' timer
}
if (inData.charAt(0) == 'Q'){ // leading 'Q' means IBI data
inData = inData.substring(1); // cut off the leading 'Q'
IBI = int(inData); // convert the string to usable int
}
}

復(fù)制代碼

瞧瞧結(jié)果

ID:134699 · 發(fā)表于 2016-7-23 09:36

請(qǐng)問(wèn)樓主，這個(gè)顯示圖形的軟件去哪里下載啊

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