【Arduino+processing】入门

开发环境安装
Arduino IDE 1.8.12


常见的UNO板

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纺织板

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SainSmart的MEGA

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arduino NANO

比较小，用于可穿戴电子产品和小型机器人等

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官方是绿色的，放置是蓝色或者红的板子。

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Firmata

这是个只需向控制板上传一次的程序。

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选择自己需要的开发板

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选择端口

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点击上传

上传成功后就能退出Arduino俩人 然后就可以使用Processing控制Arduino控制板了。

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利用光敏电阻来改变processing控制台颜色
processing代码

import processing.serial.*;
import cc.arduino.*;
import org.firmata.*;

Arduino arduino;

void setup()
{
  size(400,400);
  println(Arduino.list());
  
  arduino =new Arduino(this,Arduino.list()[1],57600);
}

void draw()
{
  int lightAmt =arduino.analogRead(0);
  
  lightAmt =255-constrain(lightAmt,0,255);
  
  background(lightAmt,0,0);
  println(lightAmt);
  if(lightAmt>230)
  {
    rect(100,100,100,100);
  }
}

接线

光敏电阻模块

SIG就是AO口。

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Processing控制LED灯颜色
processing程序

import processing.serial.*;
Serial port = new Serial(this, "COM3", 9600);
int redDisplay, greenDisplay, blueDisplay;
int red, green, blue;
String strRed, strGreen, strBlue;
String message;

void setup() {
  size(700, 500);
}

void draw() {
  background(204);
  frame();
  RGBDisplay();
  sendMessage();
}

void frame() {
  rectMode(CORNER);
  noFill();
  stroke(255, 0, 0);
  strokeWeight(2);
  rect(50, 100, 500, 50);
  stroke(0, 255, 0);
  rect(50, 200, 500, 50);
  stroke(0, 0, 255);
  rect(50, 300, 500, 50);
}

void RGBDisplay() {
  rectMode(CORNER);
  noStroke();
  fill(red, 0, 0);
  rect(50, 100, redDisplay, 50);
  fill(0, green, 0);
  rect(50, 200, greenDisplay, 50);
  fill(0, 0, blue);
  rect(50, 300, blueDisplay, 50);
  fill(red, green, blue);
  rect(300, 400, 50, 50);
  fill(0);
  rect(400, 400, 50, 50);
}

void mouseClicked() {
  if (mouseX <= 550 && mouseX >= 50) {
    if (mouseY <= 150 && mouseY >= 100) {
      red = (int) map(mouseX, 50, 550, 0, 255);
      redDisplay = mouseX - 50;
    }
    else if (mouseY <= 250 && mouseY >= 200) {
      green = (int)map(mouseX, 50, 550, 0, 255);
      greenDisplay = mouseX - 50;
    }
    else if (mouseY <= 350 && mouseY >= 300) {
      blue = (int) map(mouseX, 50, 550, 0, 255);
      blueDisplay = mouseX - 50;
    }
    else if (mouseX <= 450 && mouseX >= 400)
      shut();
  }
}

void sendMessage() {
  strRed = red + "";
  if (red < 100)
    strRed = "0" + red;
  if (red < 10)
    strRed = "00" + red;
    
  strGreen = green + "";
  if (green < 100)
    strGreen = "0" + green;
  if (green < 10)
    strGreen = "00" + green;
  
  strBlue = blue + "";
  if (blue < 100)
    strBlue = "0" + blue;
  if (blue < 10)
    strBlue = "00" + blue;
    
  message = "a" + strRed + strGreen + strBlue + "s";
  port.write(message);
}

void shut() {
  redDisplay = 0;
  greenDisplay = 0;
  blueDisplay = 0;
  red = 0;
  green = 0;
  blue = 0;
}

Arduino程序

int redpin = 11;
int bluepin = 10;
int greenpin = 9;

void setup() {
    pinMode(redpin, OUTPUT);
    pinMode(bluepin, OUTPUT);
    pinMode(greenpin, OUTPUT);
    Serial.begin(9600);
}

char charbuf[20];
int color[3];

void loop() {
    while (Serial.available() > 0) {
        Serial.readBytesUntil('s', charbuf, 20);
        if (charbuf[0] == 'a') {
            color[0] = 100 * (charbuf[1] - '0') + 10 *( charbuf[2] -'0') + charbuf[3] -'0';
            color[1] = 100 * (charbuf[4] - '0') + 10 *( charbuf[5] -'0') + charbuf[6] -'0';
            color[2] = 100 * (charbuf[7] - '0') + 10 *( charbuf[8] -'0') + charbuf[9] -'0';
        }
    analogWrite(redpin, color[0]);
    analogWrite(greenpin, color[1]);
    analogWrite(bluepin, color[2]);
    }
}