Serial port 从arduino到processing的多个序列值?
我有个小问题 我正在传递来自arduino附加的3轴加速计+3轴磁强计+罗盘航向的信息。这些被缩放到midi范围(0-127) 阿杜伊诺: 它以类似76a45b120c23d12e23f34g的格式以串行打印方式传递Serial port 从arduino到processing的多个序列值?,serial-port,arduino,communication,processing,serial-communication,Serial Port,Arduino,Communication,Processing,Serial Communication,我有个小问题 我正在传递来自arduino附加的3轴加速计+3轴磁强计+罗盘航向的信息。这些被缩放到midi范围(0-127) 阿杜伊诺: 它以类似76a45b120c23d12e23f34g的格式以串行打印方式传递 Serial.print(shiftAx); Serial.print("a"); Serial.print(shiftAy); Serial.print("b"); Serial.print(shiftAz); Serial.print("c"); S
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");
我可以通过我的串行监视器看到这一点。(但我不确定是否在“g”处打印为println。)
处理2:
我缓冲到g
在我的void设置()中
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。没有显示文本。(这只是一个简单的填充(),text())
我不明白为什么。这个问题是我的协议(如果我可以这么说的话)的问题,我是如何解包字符串的?或者其他一些问题
我很困惑
我可以让它只与两个值一起工作,就像在这里一样
注:
arduino主回路开启延迟(100);
arduino的波特率为9600波特
如果需要帮助,我会附上整个草图,我会事先表示感谢
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"));
}
阿杜伊诺:
// 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);
}
//添加上次值检查
#包括
#包括
LSM303DLH手套;
//设置最大最小磁强计
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;
西夫塔克斯,西夫塔伊,西夫塔兹;
浮动移位时间;
int-shiftHead;
无效设置()
{
Wire.begin();
glove.enableDefault();
Serial.begin(9600);
}
void循环()
{
手套。阅读();
shiftMx=((glove.m.x-minMx)/(maxMx-minMx))*127;
shiftMy=((glove.m.y-minMy)/(maxMy-minMy))*127;
shiftMz=((globate.m.z-minMz)/(maxMz-minMz))*127;
shiftAx=((手套a.x-minAx)/(maxA-minAx))*127;
shiftAy=((手套a.y-minAy)/(maxA-minAy))*127;
shiftAz=((手套a.z-minAz)/(maxA-minAz))*127;
shiftheadatemp=(globle.heading((LSM303DLH::vector){0,-1,0}));
shiftHead=(shiftheadatemp/360)*127;
如果(shiftMx<0){shiftMx=0;}
如果(shiftMx>127){shiftMx=127;}
如果(shiftMy<0){shiftMy=0;}
如果(shiftMy>127){shiftMy=127;}
如果(shiftMz<0){shiftMz=0;}
如果(shiftMz>127){shiftMz=127;}
如果(shiftAx<0){shiftAx=0;}
如果(shiftAx>127){shiftAx=127;}
如果(shiftAy<0){shiftAy=0;}
如果(shiftAy>127){shiftAy=127;}
如果(shiftAz<0){shiftAz=0;}
如果(shiftAz>127){shiftAz=127;}
如果(shiftHead<0){shiftHead=0;}
如果(shiftHead>127){shiftHead=127;}
连续打印(税务);
连续打印(“a”);
串行打印(shiftAy);
连续打印(“b”);
串行打印(shiftAz);
连续打印(“c”);
串行打印(shiftMx);
连续打印(“d”);
串行打印(shiftMy);
连续打印(“e”);
串行打印(shiftMz);
连续打印(“f”);
串行打印(shiftHead);
序列号。打印号(“g”);
延迟(100);
}
我现在无法测试您的代码,但这里有一些想法
您可以从Arduino向processing发送JSON。以下是我在自己的一个项目中使用的示例,但您可以轻松地对其进行调整以满足您的需要:
void sendJson(){
String json;
json = "{\"accel\":{\"x\":";
json = json + getXYZ(0);
json = json + ",\"y\":";
json = json + getXYZ(1);
json = json + ",\"z\":";
json = json + getXYZ(2);
json = json + "},\"gyro\":{\"yaw\":";
json = json + getYPR(0);
json = json + ",\"pitch\":";
json = json + getYPR(1);
json = json + ",\"roll\":";
json = json + getYPR(2);
json = json + "}}";
Serial.println(json);
}
JSON的优点在于,使用getType()
函数处理JSON很容易“解析”。不再使用readUntil
,一切都是这样的:(请注意,在void setup()
中,您需要将port.bufferUntil('g');
更改为port.bufferUntil('\n');
,因为在Arduino中,json
与Serial.println();
一起发送)
您将不得不稍微更改代码,但从长远来看,如果您添加更多传感器,代码将更易于维护。您只需在arduino中更改json
,并在处理过程中获取值即可
另一件事:可以使用约束函数将值约束在0
和127
之间
value = constrain(value, 0, 127);
希望有帮助 我在c#中遇到了同样的问题(第二个参数,在c#中是减法字符串的长度)。然而,我看到如果我不等待一点时间,传输的字符串并不总是以相同的形式:例如:somtime,您的字符串将是(值)a(值)b(值)c(值)d(值)e(值)f(值)g,但其他时间将是:(值)a(值)b(值)c(值)d(值),下一个字符串将是e(值)f(值)g(值)a(值)b(值)等等毕竟,所有的数据都会被传输,但它的结构不同,所以我在每次串行读取之前都会增加一点延迟(以确保前一个串行字符串被读取,直到and和每个timpe以相同的形式获得字符串),这对我来说很好。希望这对你也有帮助。这正是我想要的。更好的方法。谢谢。编辑*我会投票,但没有代表,有代表的人,给这个人一些代表
void serialEvent (Serial port){
String json = port.readString();
shiftAx = getInt("shiftAx");
shiftAy = getInt("shiftAy"); // and so on...
}
value = constrain(value, 0, 127);