我正在使用 Arduino 并使用 Arduino 库进行处理。
我收到错误“该函数bitWrite(byte, int, int)不存在。”；它接缝处理+ Arduino bitWrite 函数不能一起工作。由于这条线，它被提出：
arduino.bitWrite(data,desiredPin,desiredState);
我在这个项目中的目标是修改音乐反应草图以使用移位寄存器。
这是我的完整代码：
Arduino_Shift_display
import ddf.minim.*;
import ddf.minim.analysis.*;
import processing.serial.*;
import cc.arduino.*;
int displayNum = 8;
Arduino arduino;
//Set these in the order of frequency - 0th pin is the lowest frequency,
//while the final pin is the highest frequency
int[] lastFired = new int[displayNum];
int datapin = 2;
int clockpin = 3;
int latchpin = 4;
int switchpin = 7;
byte data = 0;
//Change these to mess with the flashing rates
//Sensitivity is the shortest possible interval between beats
//minTimeOn is the minimum time an LED can be on
int sensitivity = 75;
int minTimeOn = 50;
String mode;
String source;
Minim minim;
AudioInput in;
AudioPlayer song;
BeatDetect beat;
//Used to stop flashing if the only signal on the line is random noise
boolean hasInput = false;
float tol = 0.005;
void setup(){
// shift register setup
arduino.pinMode(datapin, arduino.OUTPUT);
arduino.pinMode(clockpin, arduino.OUTPUT);
arduino.pinMode(latchpin, arduino.OUTPUT);
arduino.digitalWrite(switchpin, arduino.HIGH);
//Uncomment the mode/source pair for the desired input
//Shoutcast radio stream
//mode = "radio";
//source = "http://scfire-ntc-aa05.stream.aol.com:80/stream/1018";
//mode = "file";
//source = "/path/to/mp3";
mode = "mic";
source = "";
size(512, 200, P2D);
minim = new Minim(this);
arduino = new Arduino(this, Arduino.list()[1]);
minim = new Minim(this);
if (mode == "file" || mode == "radio"){
song = minim.loadFile(source, 2048);
song.play();
beat = new BeatDetect(song.bufferSize(), song.sampleRate());
beat.setSensitivity(sensitivity);
} else if (mode == "mic"){
in = minim.getLineIn(Minim.STEREO, 2048);
beat = new BeatDetect(in.bufferSize(), in.sampleRate());
beat.setSensitivity(sensitivity);
}
}
void shiftWrite(int desiredPin, int desiredState)
// This function lets you make the shift register outputs
// HIGH or LOW in exactly the same way that you use digitalWrite().
// Like digitalWrite(), this function takes two parameters:
// "desiredPin" is the shift register output pin
// you want to affect (0-7)
// "desiredState" is whether you want that output
// to be HIGH or LOW
// Inside the Arduino, numbers are stored as arrays of "bits",
// each of which is a single 1 or 0 value. Because a "byte" type
// is also eight bits, we'll use a byte (which we named "data"
// at the top of this sketch) to send data to the shift register.
// If a bit in the byte is "1", the output will be HIGH. If the bit
// is "0", the output will be LOW.
// To turn the individual bits in "data" on and off, we'll use
// a new Arduino commands called bitWrite(), which can make
// individual bits in a number 1 or 0.
{
// First we'll alter the global variable "data", changing the
// desired bit to 1 or 0:
arduino.bitWrite(data,desiredPin,desiredState);
// Now we'll actually send that data to the shift register.
// The shiftOut() function does all the hard work of
// manipulating the data and clock pins to move the data
// into the shift register:
arduino.shiftOut(datapin, clockpin, MSBFIRST, data);
// Once the data is in the shift register, we still need to
// make it appear at the outputs. We'll toggle the state of
// the latchPin, which will signal the shift register to "latch"
// the data to the outputs. (Latch activates on the high-to
// -low transition).
arduino.digitalWrite(latchpin, arduino.HIGH);
arduino.digitalWrite(latchpin, arduino.LOW);
}
void draw(){
if (mode == "file" || mode == "radio"){
beat.detect(song.mix);
drawWaveForm((AudioSource)song);
} else if (mode == "mic"){
beat.detect(in.mix);
drawWaveForm((AudioSource)in);
}
if (hasInput){ //hasInput is set within drawWaveForm
for (int i=0; i<displayNum-1; i++){
if ( beat.isRange( i+1, i+1, 1) ){
shiftWrite(i, 1);
lastFired[i] = millis();
} else {
if ((millis() - lastFired[i]) > minTimeOn){
shiftWrite(i, 0);
}
}
}
}
} //End draw method
//Display the input waveform
//This method sets 'hasInput' - if any sample in the signal has a value
//larger than 'tol,' there is a signal and the lights should flash.
//Otherwise, only noise is present and the lights should stay off.
void drawWaveForm(AudioSource src){
background(0);
stroke(255);
hasInput = false;
for(int i = 0; i < src.bufferSize() - 1; i++)
{
line(i, 50 + src.left.get(i)*50, i+1, 50 + src.left.get(i+1)*50);
line(i, 150 + src.right.get(i)*50, i+1, 150 + src.right.get(i+1)*50);
if (!hasInput && (abs(src.left.get(i)) > tol || abs(src.right.get(i)) > tol)){
hasInput = true;
}
}
}
void resetPins(){
for (int i=0; i<ledPins.length; i++){
arduino.digitalWrite(ledPins[i], Arduino.LOW);
}
}
void stop(){
resetPins();
if (mode == "mic"){
in.close();
}
minim.stop();
super.stop();
}
节拍监听器
class BeatListener implements AudioListener
{
private BeatDetect beat;
private AudioPlayer source;
BeatListener(BeatDetect beat, AudioPlayer source)
{
this.source = source;
this.source.addListener(this);
this.beat = beat;
}
void samples(float[] samps)
{
beat.detect(source.mix);
}
void samples(float[] sampsL, float[] sampsR)
{
beat.detect(source.mix);
}
}