Question

我已经成功起草了用于电容感应的Ardunio代码。串行监视器显示正确的值。

我还成功地起草了处理代码，该代码在处理控制台上显示了来自Arduino串行监视器的完全相同的值。

但是，在读取值时，在处理绘图功能时，所需的绘图没有执行功能。而且，两个代码都可以独立正常工作。

请帮助。

此外，我的处理代码可以与其他ardunio示例代码一起正常工作。那是图纸的变化。

感谢您的帮助

Arduino代码：

#include <CapacitiveSensor.h>

/*
 * CapitiveSense Library Demo Sketch
 * Paul Badger 2008
 * Uses a high value resistor e.g. 10 megohm between send pin and receive pin
 * Resistor effects sensitivity, experiment with values, 50 kilohm - 50 megohm. Larger resistor values yield larger sensor values.
 * Receive pin is the sensor pin - try different amounts of foil/metal on this pin
 * Best results are obtained if sensor foil and wire is covered with an insulator such as paper or plastic sheet
 */


CapacitiveSensor   cs_4_2 = CapacitiveSensor(A4,A2);        // 10 megohm resistor between pins 4 & 2, pin 2 is sensor pin, add wire, foil


void setup()                    
{

   cs_4_2.set_CS_AutocaL_Millis(0xFFFFFFFF);     // turn off autocalibrate on channel 1 - just as an example
   Serial.begin(9600);

}

void loop()                    
{
    long start = millis();
    long total1 =  cs_4_2.capacitiveSensor(30);


    //Serial.println(millis() - start);        // check on performance in milliseconds
    //Serial.println("\t");                    // tab character for debug window spacing

    Serial.println(total1);                  // print sensor output 1
    Serial.println("\t");


    delay(1000);                             // arbitrary delay to limit data to serial port 
}

处理代码

import processing.serial.*;



import processing.serial.*; // import the Processing serial library
Serial myPort;  // The serial port
int sensor1;
int sensor2;
int sensor3;
float mappedSensor1;
float mappedSensor2;
float mappedSensor3;
PImage Gifimg;
PImage firstimg;
PImage secondimg;



PImage Frontimg;  // Declare variable "a" of type PImage

// Declare variable "a" of type PImage

void setup() {
  size(1080, 800);
  // List all the available serial ports in the console
  printArray(Serial.list());
   Gifimg = loadImage("secondsmall.png");  // Load the image into the program
   Frontimg = loadImage("Frontsmall.png");  // Load the image into the program  
   secondimg = loadImage("finalsmall.png");  // Load the image into the program  




  // Change the 0 to the appropriate number of the serial port
  // that your microcontroller is attached to.
  String portName = Serial.list()[0];
  myPort = new Serial(this, portName, 9600);
  // read incoming bytes to a buffer
  // until you get a linefeed (ASCII 10):
  myPort.bufferUntil('\n');
}


void draw() {
  background(255);

  if (sensor1 == 0) {
image(secondimg, 0, 0);
image(Gifimg, 0, 0);



} 
else {
image(Frontimg, 0, 0);



  }

}


void serialEvent(Serial myPort) {
  // read the serial buffer:
  String myString = myPort.readStringUntil('\n');
  if (myString != null) {
    // println(myString);
    myString = trim(myString);

    // split the string at the commas
    // and convert the sections into integers:
    int sensors[] = int(split(myString, ','));
    for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
      print("Sensor " + sensorNum + ": " + sensors[sensorNum] + "\t");
    }
    // add a linefeed at the end:
    println();
    sensor1 = sensors[0];  

    mappedSensor1 = map(sensor1, 0, 1023, height, 0);

  }
}

Arduino处理电容式感应错误

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