我有一个小问题。
我正在传递来自 arduino 附加的 3 轴加速度计 + 3 轴磁力计 + 指南针航向的信息。这些被缩放到 midi 范围 (0-127)。
ARDUINO:这是在串行打印中传递的,格式为 76a45b120c23d12e23f34g
Serial.print(shiftAx);
Serial.print("a");
Serial.print(shiftAy);
Serial.print("b");
Serial.print(shiftAz);
Serial.print("c");
Serial.print(shiftMx);
Serial.print("d");
Serial.print(shiftMy);
Serial.print("e");
Serial.print(shiftMz);
Serial.print("f");
Serial.print(shiftHead);
Serial.print("g");
我可以使用我的串行监视器看到它的工作原理。(但是我不确定是否在“g”处将其打印为 println。)
处理2:
我在我的 void setup() 中缓冲直到 g
port = new Serial(this, "/dev/tty.usbmodem411", 9600);
port.bufferUntil('g');
我有这个功能
void serialEvent (Serial port)
{
data = port.readStringUntil('g');
AxVal = data.substring(0, data.indexOf('a'));
AyVal = data.substring(data.indexOf("a") + 1, data.indexOf("b"));
AzVal = data.substring(data.indexOf("b") + 1, data.indexOf("c"));
MxVal = data.substring(data.indexOf("c") + 1, data.indexOf("d"));
MyVal = data.substring(data.indexOf("d") + 1, data.indexOf("e"));
MzVal = data.substring(data.indexOf("e") + 1, data.indexOf("f"));
HeadVal = data.substring(data.indexOf("f") + 1, data.indexOf("g"));
}
问题所以这不起作用。没有文字显示。(它只是一个简单的填充(),文本())
我不明白为什么。问题是我的协议(如果我可以这么称呼的话),我是如何解包字符串的?或者其他什么问题。
我很迷茫。
我可以让它只使用本教程中的两个值
注意:arduino 主循环处于延迟(100);arduino 的波特率为 9600
如果需要帮助我,我将附上整个草图,我将在此表示感谢。
代码:
加工
import themidibus.*; //Import the library
import javax.sound.midi.MidiMessage; //Import the MidiMessage classes http://java.sun.com/j2se/1.5.0/docs/api/javax/sound/midi/MidiMessage.html
import javax.sound.midi.SysexMessage;
import javax.sound.midi.ShortMessage;
import processing.serial.*;
MidiBus myBus; // The MidiBus
Serial port;
String AxVal = " ", AyVal = " ", AzVal = " ";
String MxVal = " ", MyVal = " ", MzVal = " ";
String HeadVal = " ";
String AxString="Ax",AyString = "Ay",AzString = "Az";
String MxString="Mx",MyString = "My",MzString = "Mz";
String HeadString="Heading";
String data = " ";
PFont font;
int status_byte = 0xB0; // send control change
int channel_byte = 0; // On channel 0
int first_byte; // cc number;
int second_byte; // value
void setup()
{
size(1000,500);
port = new Serial(this, "/dev/tty.usbmodem411", 9600);
port.bufferUntil('g');
font = loadFont("NanumBrush-48.vlw");
textFont(font, 48);
MidiBus.list(); // List all available Midi devices on STDOUT. This will show each device's index and name.
myBus = new MidiBus(this, 1, 0); // Create a new MidiBus object
}
void draw()
{
background(0,0,0);
//first_byte = 1;
//second_byte = int(AxVal); // But with less velocity
//myBus.sendMessage(status_byte, channel_byte, first_byte, second_byte);
fill(46, 209, 2);
text(AxVal, 60, 75);
text(AxString, 60, 125);
//first_byte = 2;
//second_byte = int(AyVal); // But with less velocity
//myBus.sendMessage(status_byte, channel_byte, first_byte, second_byte);
fill(0, 160, 153);
text(AyVal, 120, 75);
text(AyString,120,125);
// first_byte = 3;
//second_byte = int(AzVal); // But with less velocity
//myBus.sendMessage(status_byte, channel_byte, first_byte, second_byte);
fill(0, 160, 153);
text(AzVal, 180, 75);
text(AzString,180,125);
/*
first_byte = 4;
second_byte = int(MxVal); // But with less velocity
myBus.sendMessage(status_byte, channel_byte, first_byte, second_byte);
fill(0, 160, 153);
text(MxVal, 240, 75);
text(MxString,240,125);
first_byte = 5;
second_byte = int(MyVal); // But with less velocity
myBus.sendMessage(status_byte, channel_byte, first_byte, second_byte);
fill(0, 160, 153);
text(MyVal, 300, 75);
text(MyString,300,125);
first_byte = 6;
second_byte = int(MzVal); // But with less velocity
myBus.sendMessage(status_byte, channel_byte, first_byte, second_byte);
fill(0, 160, 153);
text(MzVal, 360, 75);
text(MzString,360,125);
first_byte = 7;
second_byte = int(HeadVal); // But with less velocity
myBus.sendMessage(status_byte, channel_byte, first_byte, second_byte);
fill(0, 160, 153);
text(HeadVal, 420, 75);
text(HeadString,420,125);
*/
}
void serialEvent (Serial port)
{
data = port.readStringUntil('g');
data = data.substring(0, data.length() - 1);
AxVal = data.substring(0, data.indexOf('a'));
AyVal = data.substring(data.indexOf("a") + 1, data.indexOf("b"));
AzVal = data.substring(data.indexOf("b") + 1, data.length());
/*
index = data.indexOf("c")+1;
MxVal = data.substring(index, data.indexOf("d"));
index = data.indexOf("d")+1;
MyVal = data.substring(index, data.indexOf("e"));
index = data.indexOf("e")+1;
MzVal = data.substring(index, data.indexOf("f"));
index = data.indexOf("f")+1;
HeadVal = data.substring(index, data.indexOf("g"));
*/
}
/*
void serialEvent (Serial port)
{
data = port.readStringUntil('g');
AxVal = data.substring(0, data.indexOf('a'));
AyVal = data.substring(data.indexOf("a") + 1, data.indexOf("b"));
AzVal = data.substring(data.indexOf("b") + 1, data.indexOf("c"));
MxVal = data.substring(data.indexOf("c") + 1, data.indexOf("d"));
MyVal = data.substring(data.indexOf("d") + 1, data.indexOf("e"));
MzVal = data.substring(data.indexOf("e") + 1, data.indexOf("f"));
HeadVal = data.substring(data.indexOf("f") + 1, data.indexOf("g"));
}
阿杜诺:
// Add lastvalue check
#include <Wire.h>
#include <LSM303DLH.h>
LSM303DLH glove;
//set max min magnetometer
int maxMx = +353, maxMy = +527, maxMz = 426;
int minMx = -700, minMy = -477, minMz = -561;
int maxA = 2019;
int minAx = -1043, minAy = -2048, minAz = -2048;
int shiftMx,shiftMy,shiftMz;
int shiftAx,shiftAy,shiftAz;
float shiftHeadTemp;
int shiftHead;
void setup()
{
Wire.begin();
glove.enableDefault();
Serial.begin(9600);
}
void loop()
{
glove.read();
shiftMx = ((glove.m.x - minMx) / (maxMx - minMx)) * 127;
shiftMy = ((glove.m.y - minMy) / (maxMy - minMy)) * 127;
shiftMz = ((glove.m.z - minMz) / (maxMz - minMz)) * 127;
shiftAx = ((glove.a.x - minAx) / (maxA - minAx)) * 127;
shiftAy = ((glove.a.y - minAy) / (maxA - minAy)) * 127;
shiftAz = ((glove.a.z - minAz) / (maxA - minAz)) * 127;
shiftHeadTemp = (glove.heading((LSM303DLH::vector){0,-1,0}));
shiftHead = (shiftHeadTemp/360)*127;
if (shiftMx < 0){shiftMx=0;}
if (shiftMx >127){shiftMx=127;}
if (shiftMy < 0){shiftMy=0;}
if (shiftMy >127){shiftMy=127;}
if (shiftMz < 0){shiftMz=0;}
if (shiftMz >127){shiftMz=127;}
if (shiftAx < 0){shiftAx=0;}
if (shiftAx >127){shiftAx=127;}
if (shiftAy < 0){shiftAy=0;}
if (shiftAy >127){shiftAy=127;}
if (shiftAz < 0){shiftAz=0;}
if (shiftAz >127){shiftAz=127;}
if (shiftHead < 0){shiftHead=0;}
if (shiftHead >127){shiftHead=127;}
Serial.print(shiftAx);
Serial.print("a");
Serial.print(shiftAy);
Serial.print("b");
Serial.print(shiftAz);
Serial.print("c");
Serial.print(shiftMx);
Serial.print("d");
Serial.print(shiftMy);
Serial.print("e");
Serial.print(shiftMz);
Serial.print("f");
Serial.print(shiftHead);
Serial.println("g");
delay(100);
}