2019-09-20 11:01:53 q764424567 阅读数 182

一、前言

记得以前写了一篇Unity3D与串口通信程序的开发的文章,主要讲的是如何用Unity3D程序给串口发送数据,具体可以查看这篇文章https://blog.csdn.net/q764424567/article/details/78710739
但是最近有小伙伴问我如何接收串口程序,今天就再分享一下比较完整的Unity开发的串口通信程序吧,包括发送与接收数据,绑定串口号等。

二、文章链接

Unity3d 与串口的通信程序的开发,软件硬件结合
【Unity3D日常】Unity3d与串口通信程序的开发

三、正文

1、先做一个UI界面吧
在这里插入图片描述
在这里插入图片描述
做的比较简单,就不多数哦了

2、代码

using UnityEngine;
using System.IO.Ports;
using System.Text;
using UnityEngine.UI;

public class SerialPortTest : MonoBehaviour
{
    private SerialPort sp = new SerialPort();
    public Text m_TextSendDataPar;
    public Text m_TextShowData;

    // Use this for initialization
    void Start()
    {
        //打开串口
        Init("COM1", 9600, Parity.None, 8, StopBits.None);
    }

    //发送数据按钮
    public void Btn_SendData()
    {
        Data_Send(m_TextSendDataPar.ToString());
    }

    //初始化串口类
    public void Init(string _portName,int _baudRate,Parity _parity,int dataBits,StopBits _stopbits)
    {
        sp = new SerialPort(_portName, _baudRate, _parity, dataBits, _stopbits);//绑定端口
        sp.DataReceived += new SerialDataReceivedEventHandler(Data_Received);//订阅委托
    }

    //接收数据
    private void Data_Received(object sender, SerialDataReceivedEventArgs e)
    {
        byte[] ReDatas = new byte[sp.BytesToRead];
        sp.Read(ReDatas, 0, ReDatas.Length);//读取数据
        this.Data_Show(ReDatas);//显示数据
    }

    /// <summary>
    /// 显示数据
    /// </summary>
    /// <param name="data">字节数组</param>
    public void Data_Show(byte[] data)
    {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < data.Length; i++)
        {
            sb.AppendFormat("{0:x2}" + "", data[i]);
        }
        Debug.Log(sb.ToString());
        m_TextShowData.text = sb.ToString();
    }

    //发送数据
    public void Data_Send(string _parameter)
    {
        sp.Open();
        sp.WriteLine(_parameter);
        sp.Close();
    }
}

3、绑定参数
在这里插入图片描述
在这里插入图片描述
4、找不到命名空间的问题

在unity 引用System.IO.Ports 却发现引用不到 查了一下才看到 要在[Edit->Project Settings->Player]下,修改[Other Settings]下的[Optimization]的[API Compatibility Level]为[.NET 2.0](默认为[.NET 2.0 Subset]。才能找到
*PS:感谢单曲循环小盆友的提醒
在这里插入图片描述

OK了。。。小伙们可以试试了
对啦,那个数据只是接收,然后显示了,具体要怎么解析,获取端口号啥的就让小伙伴们自己来吧。。

2013-10-20 19:08:26 u012479983 阅读数 5199

Unity3D使用串口与单片机等进行数据传输


一个简单的例子:(接收一个字节)
using UnityEngine; 
using System.Collections; 
using System; 
using System.Threading; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.IO.Ports; 
using System.Text.RegularExpressions; 
using System.Text; 


public class tmp : MonoBehaviour 
{ 
    private SerialPort sp; 
    private Thread recvThread; 
    // Use this for initialization 
    void Start() 
    {  
        sp = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One); 
		//串口初始化
        if (!sp.IsOpen)
        {
            sp.Open(); 
        }
        recvThread = new Thread(ReceiveOneByte); //该线程接收一个字节
        recvThread.Start(); 
    } 
    void Update() 
    {
		//...
    }
	
    private void ReceiveOneByte() 
    { 
	
        try 
        { 
           	Byte[] buf = new Byte[1]; 
            string sbReadline2str = string.Empty; 
            if (sp.IsOpen) 
				sp.Read(buf, 0, 1); 
        }
        catch (Exception ex) 
        { 
            Debug.Log(ex); 
        }
    } 

	/* private void SendSerialPortData(string data) //发送一个字节
	 { 
		 if(sp.IsOpen) 
		 { 
			 sp.WriteLine(data); 
		 } 
	 } 
	*/
	void OnApplicationQuit() 
	{ 
	    sp.Close(); 
	} 
}

应用:

Arduino+MPU6050提供姿态数据由Unity3D实时显示


Arduino端:

1.准备:
与MPU6050的物理连接:A4---SDA A5---SCLVCC---3V3GND---GNDGND---ADD

Arduino IDE(我这用的是1.0.5)
库文件:https://github.com/jrowberg/i2cdevlib  下载后本次需要的是MPU6050和I2Cdev两个文件夹,将它们拷贝进IDE的安装目录下的libraries\文件夹下

2.代码:
代码可由MPU6050库自带的Example中的“MPU6050_DMP6”改写(该Example还可用于测试连接或元件是否正常工作)
改写内容有:
1.选择输出欧拉角功能
2.去除其它不必要输出和输入
3.修改输出格式如下:每一组欧拉角前加“!”,欧拉角内以“#”分隔
注:由该Example可获得MPU6050经DMP处理后的数据,包括四元数,欧拉角,加速度,具体获得那种数据,靠预处理来选择
最终代码:
// I2C device class (I2Cdev) demonstration Arduino sketch for MPU6050 class using DMP (MotionApps v2.0)
// 6/21/2012 by Jeff Rowberg <jeff@rowberg.net>
// Updates should (hopefully) always be available at https://github.com/jrowberg/i2cdevlib
//
// Changelog:
//      2013-05-08 - added seamless Fastwire support
//                 - added note about gyro calibration
//      2012-06-21 - added note about Arduino 1.0.1 + Leonardo compatibility error
//      2012-06-20 - improved FIFO overflow handling and simplified read process
//      2012-06-19 - completely rearranged DMP initialization code and simplification
//      2012-06-13 - pull gyro and accel data from FIFO packet instead of reading directly
//      2012-06-09 - fix broken FIFO read sequence and change interrupt detection to RISING
//      2012-06-05 - add gravity-compensated initial reference frame acceleration output
//                 - add 3D math helper file to DMP6 example sketch
//                 - add Euler output and Yaw/Pitch/Roll output formats
//      2012-06-04 - remove accel offset clearing for better results (thanks Sungon Lee)
//      2012-06-01 - fixed gyro sensitivity to be 2000 deg/sec instead of 250
//      2012-05-30 - basic DMP initialization working

/* ============================================
I2Cdev device library code is placed under the MIT license
Copyright (c) 2012 Jeff Rowberg

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
===============================================
*/

// I2Cdev and MPU6050 must be installed as libraries, or else the .cpp/.h files
// for both classes must be in the include path of your project
#include "I2Cdev.h"

#include "MPU6050_6Axis_MotionApps20.h"
//#include "MPU6050.h" // not necessary if using MotionApps include file

// Arduino Wire library is required if I2Cdev I2CDEV_ARDUINO_WIRE implementation
// is used in I2Cdev.h
#if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE
    #include "Wire.h"
#endif

// class default I2C address is 0x68
// specific I2C addresses may be passed as a parameter here
// AD0 low = 0x68 (default for SparkFun breakout and InvenSense evaluation board)
// AD0 high = 0x69
MPU6050 mpu;
//MPU6050 mpu(0x69); // <-- use for AD0 high

/* =========================================================================
   NOTE: In addition to connection 3.3v, GND, SDA, and SCL, this sketch
   depends on the MPU-6050's INT pin being connected to the Arduino's
   external interrupt #0 pin. On the Arduino Uno and Mega 2560, this is
   digital I/O pin 2.
 * ========================================================================= */

/* =========================================================================
   NOTE: Arduino v1.0.1 with the Leonardo board generates a compile error
   when using Serial.write(buf, len). The Teapot output uses this method.
   The solution requires a modification to the Arduino USBAPI.h file, which
   is fortunately simple, but annoying. This will be fixed in the next IDE
   release. For more info, see these links:

   http://arduino.cc/forum/index.php/topic,109987.0.html
   http://code.google.com/p/arduino/issues/detail?id=958
 * ========================================================================= */



// uncomment "OUTPUT_READABLE_QUATERNION" if you want to see the actual
// quaternion components in a [w, x, y, z] format (not best for parsing
// on a remote host such as Processing or something though)
//#define OUTPUT_READABLE_QUATERNION

// uncomment "OUTPUT_READABLE_EULER" if you want to see Euler angles
// (in degrees) calculated from the quaternions coming from the FIFO.
// Note that Euler angles suffer from gimbal lock (for more info, see
// http://en.wikipedia.org/wiki/Gimbal_lock)
#define OUTPUT_READABLE_EULER

// uncomment "OUTPUT_READABLE_YAWPITCHROLL" if you want to see the yaw/
// pitch/roll angles (in degrees) calculated from the quaternions coming
// from the FIFO. Note this also requires gravity vector calculations.
// Also note that yaw/pitch/roll angles suffer from gimbal lock (for
// more info, see: http://en.wikipedia.org/wiki/Gimbal_lock)
//#define OUTPUT_READABLE_YAWPITCHROLL

// uncomment "OUTPUT_READABLE_REALACCEL" if you want to see acceleration
// components with gravity removed. This acceleration reference frame is
// not compensated for orientation, so +X is always +X according to the
// sensor, just without the effects of gravity. If you want acceleration
// compensated for orientation, us OUTPUT_READABLE_WORLDACCEL instead.
//#define OUTPUT_READABLE_REALACCEL

// uncomment "OUTPUT_READABLE_WORLDACCEL" if you want to see acceleration
// components with gravity removed and adjusted for the world frame of
// reference (yaw is relative to initial orientation, since no magnetometer
// is present in this case). Could be quite handy in some cases.
//#define OUTPUT_READABLE_WORLDACCEL

// uncomment "OUTPUT_TEAPOT" if you want output that matches the
// format used for the InvenSense teapot demo
//#define OUTPUT_TEAPOT



#define LED_PIN 13 // (Arduino is 13, Teensy is 11, Teensy++ is 6)
bool blinkState = false;

// MPU control/status vars
bool dmpReady = false;  // set true if DMP init was successful
uint8_t mpuIntStatus;   // holds actual interrupt status byte from MPU
uint8_t devStatus;      // return status after each device operation (0 = success, !0 = error)
uint16_t packetSize;    // expected DMP packet size (default is 42 bytes)
uint16_t fifoCount;     // count of all bytes currently in FIFO
uint8_t fifoBuffer[64]; // FIFO storage buffer

// orientation/motion vars
Quaternion q;           // [w, x, y, z]         quaternion container
VectorInt16 aa;         // [x, y, z]            accel sensor measurements
VectorInt16 aaReal;     // [x, y, z]            gravity-free accel sensor measurements
VectorInt16 aaWorld;    // [x, y, z]            world-frame accel sensor measurements
VectorFloat gravity;    // [x, y, z]            gravity vector
float euler[3];         // [psi, theta, phi]    Euler angle container
float ypr[3];           // [yaw, pitch, roll]   yaw/pitch/roll container and gravity vector

// packet structure for InvenSense teapot demo
uint8_t teapotPacket[14] = { '$', 0x02, 0,0, 0,0, 0,0, 0,0, 0x00, 0x00, '\r', '\n' };



// ================================================================
// ===               INTERRUPT DETECTION ROUTINE                ===
// ================================================================

volatile bool mpuInterrupt = false;     // indicates whether MPU interrupt pin has gone high
void dmpDataReady() {
    mpuInterrupt = true;
}



// ================================================================
// ===                      INITIAL SETUP                       ===
// ================================================================

void setup() {
    // join I2C bus (I2Cdev library doesn't do this automatically)
    #if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE
        Wire.begin();
        TWBR = 24; // 400kHz I2C clock (200kHz if CPU is 8MHz)
    #elif I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_FASTWIRE
        Fastwire::setup(400, true);
    #endif

    // initialize serial communication
    // (115200 chosen because it is required for Teapot Demo output, but it's
    // really up to you depending on your project)
    Serial.begin(115200);
    while (!Serial); // wait for Leonardo enumeration, others continue immediately

    // NOTE: 8MHz or slower host processors, like the Teensy @ 3.3v or Ardunio
    // Pro Mini running at 3.3v, cannot handle this baud rate reliably due to
    // the baud timing being too misaligned with processor ticks. You must use
    // 38400 or slower in these cases, or use some kind of external separate
    // crystal solution for the UART timer.

    // initialize device
   // Serial.println(F("Initializing I2C devices..."));
    mpu.initialize();

    // verify connection
   // Serial.println(F("Testing device connections..."));
  //  Serial.println(mpu.testConnection() ? F("MPU6050 connection successful") : F("MPU6050 connection failed"));

    // wait for ready
   // Serial.println(F("\nSend any character to begin DMP programming and demo: "));
  //  while (Serial.available() && Serial.read()); // empty buffer
 //   while (!Serial.available());                 // wait for data
 //   while (Serial.available() && Serial.read()); // empty buffer again

    // load and configure the DMP
  //  Serial.println(F("Initializing DMP..."));
    devStatus = mpu.dmpInitialize();

    // supply your own gyro offsets here, scaled for min sensitivity
    mpu.setXGyroOffset(220);
    mpu.setYGyroOffset(76);
    mpu.setZGyroOffset(-85);
    mpu.setZAccelOffset(1788); // 1688 factory default for my test chip

    // make sure it worked (returns 0 if so)
    if (devStatus == 0) {
        // turn on the DMP, now that it's ready
     //   Serial.println(F("Enabling DMP..."));
        mpu.setDMPEnabled(true);

        // enable Arduino interrupt detection
     //   Serial.println(F("Enabling interrupt detection (Arduino external interrupt 0)..."));
        attachInterrupt(0, dmpDataReady, RISING);
        mpuIntStatus = mpu.getIntStatus();

        // set our DMP Ready flag so the main loop() function knows it's okay to use it
    //    Serial.println(F("DMP ready! Waiting for first interrupt..."));
        dmpReady = true;

        // get expected DMP packet size for later comparison
        packetSize = mpu.dmpGetFIFOPacketSize();
    } else {
        // ERROR!
        // 1 = initial memory load failed
        // 2 = DMP configuration updates failed
        // (if it's going to break, usually the code will be 1)
        Serial.print(F("DMP Initialization failed (code "));
        Serial.print(devStatus);
        Serial.println(F(")"));
    }

    // configure LED for output
    pinMode(LED_PIN, OUTPUT);
}



// ================================================================
// ===                    MAIN PROGRAM LOOP                     ===
// ================================================================

void loop() {
    // if programming failed, don't try to do anything
    if (!dmpReady) return;

    // wait for MPU interrupt or extra packet(s) available
    while (!mpuInterrupt && fifoCount < packetSize) {
        // other program behavior stuff here
        // .
        // .
        // .
        // if you are really paranoid you can frequently test in between other
        // stuff to see if mpuInterrupt is true, and if so, "break;" from the
        // while() loop to immediately process the MPU data
        // .
        // .
        // .
    }

    // reset interrupt flag and get INT_STATUS byte
    mpuInterrupt = false;
    mpuIntStatus = mpu.getIntStatus();

    // get current FIFO count
    fifoCount = mpu.getFIFOCount();

    // check for overflow (this should never happen unless our code is too inefficient)
    if ((mpuIntStatus & 0x10) || fifoCount == 1024) {
        // reset so we can continue cleanly
        mpu.resetFIFO();
        Serial.println(F("FIFO overflow!"));

    // otherwise, check for DMP data ready interrupt (this should happen frequently)
    } else if (mpuIntStatus & 0x02) {
        // wait for correct available data length, should be a VERY short wait
        while (fifoCount < packetSize) fifoCount = mpu.getFIFOCount();

        // read a packet from FIFO
        mpu.getFIFOBytes(fifoBuffer, packetSize);
        
        // track FIFO count here in case there is > 1 packet available
        // (this lets us immediately read more without waiting for an interrupt)
        fifoCount -= packetSize;

        #ifdef OUTPUT_READABLE_QUATERNION
            // display quaternion values in easy matrix form: w x y z
            mpu.dmpGetQuaternion(&q, fifoBuffer);
            Serial.print("!");
            Serial.print(q.x);
            Serial.print("#");
            Serial.print(q.y);
            Serial.print("#");
            Serial.print(q.z);
            Serial.print("#");
            Serial.print(q.w);
        #endif

        #ifdef OUTPUT_READABLE_EULER
            // display Euler angles in degrees
            mpu.dmpGetQuaternion(&q, fifoBuffer);
            mpu.dmpGetEuler(euler, &q);
            Serial.print("!");
            Serial.print(euler[0] * 180/M_PI);
            Serial.print("#");
            Serial.print(euler[1] * 180/M_PI);
            Serial.print("#");
            Serial.print(euler[2] * 180/M_PI);
        #endif

        #ifdef OUTPUT_READABLE_YAWPITCHROLL
            // display Euler angles in degrees
            mpu.dmpGetQuaternion(&q, fifoBuffer);
            mpu.dmpGetGravity(&gravity, &q);
            mpu.dmpGetYawPitchRoll(ypr, &q, &gravity);
            Serial.print("!");
            Serial.print(ypr[0] * 180/M_PI);
            Serial.print("#");
            Serial.print(ypr[1] * 180/M_PI);
            Serial.print("#");
            Serial.print(ypr[2] * 180/M_PI);
        #endif

        #ifdef OUTPUT_READABLE_REALACCEL
            // display real acceleration, adjusted to remove gravity
            mpu.dmpGetQuaternion(&q, fifoBuffer);
            mpu.dmpGetAccel(&aa, fifoBuffer);
            mpu.dmpGetGravity(&gravity, &q);
            mpu.dmpGetLinearAccel(&aaReal, &aa, &gravity);
            Serial.print("areal\t");
            Serial.print(aaReal.x);
            Serial.print("\t");
            Serial.print(aaReal.y);
            Serial.print("\t");
            Serial.println(aaReal.z);
        #endif

        #ifdef OUTPUT_READABLE_WORLDACCEL
            // display initial world-frame acceleration, adjusted to remove gravity
            // and rotated based on known orientation from quaternion
            mpu.dmpGetQuaternion(&q, fifoBuffer);
            mpu.dmpGetAccel(&aa, fifoBuffer);
            mpu.dmpGetGravity(&gravity, &q);
            mpu.dmpGetLinearAccel(&aaReal, &aa, &gravity);
            mpu.dmpGetLinearAccelInWorld(&aaWorld, &aaReal, &q);
            Serial.print("aworld\t");
            Serial.print(aaWorld.x);
            Serial.print("\t");
            Serial.print(aaWorld.y);
            Serial.print("\t");
            Serial.println(aaWorld.z);
        #endif
    
        #ifdef OUTPUT_TEAPOT
            // display quaternion values in InvenSense Teapot demo format:
            teapotPacket[2] = fifoBuffer[0];
            teapotPacket[3] = fifoBuffer[1];
            teapotPacket[4] = fifoBuffer[4];
            teapotPacket[5] = fifoBuffer[5];
            teapotPacket[6] = fifoBuffer[8];
            teapotPacket[7] = fifoBuffer[9];
            teapotPacket[8] = fifoBuffer[12];
            teapotPacket[9] = fifoBuffer[13];
            Serial.write(teapotPacket, 14);
            teapotPacket[11]++; // packetCount, loops at 0xFF on purpose
        #endif

        // blink LED to indicate activity
        blinkState = !blinkState;
        digitalWrite(LED_PIN, blinkState);
    }
}

Unity3D端:

上代码:
using UnityEngine; 
using System.Collections; 
using System; 
using System.Threading; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.IO.Ports; 
using System.Text.RegularExpressions; 
using System.Text; 


public class com : MonoBehaviour 
{ 
	public GameObject target;//目标操作物体
    private SerialPort sp; 
    private Thread recvThread; 
	float x,y,z;//存放欧拉角
    // Use this for initialization 
    void Start() 
    { 
		Debug.Log("start"); 
        sp = new SerialPort("COM1", 115200, Parity.None, 8, StopBits.One); 
		//串口初始化
        if (!sp.IsOpen)
        {
            sp.Open(); 
        }
        recvThread = new Thread(ReceiveData); 
        recvThread.Start(); 
    } 


    // Update is called once per frame 
    void Update() 
    { 
		Debug.Log(x+"&&"+y+"&&"+z);
		//更新姿态
		target.transform.eulerAngles=new Vector3(x,y,z);
    }
	
    private void ReceiveData() 
    { 
		char[] spil="#".ToCharArray();//“#”为串口传入一份数据内的分隔符,数据间的分隔符为“!”(ASICII为33)
		char[] sbuf = new char[1024];
        try 
        { 
           	Byte[] buf = new Byte[1]; 
            string sbReadline2str = string.Empty; 
            if (sp.IsOpen) sp.Read(buf, 0, 1); 
			
            if (buf.Length == 0) 
            { 
                return; 
            }
			else if(buf[0]==33){//第一次找到数据头标志
				int i=0;
				while(true){//不断读取欧拉角
					sp.Read(buf, 0, 1);//读一个字节
					if(buf[0]!=33)//该份欧拉角未结束
						{
							//保存该字节
							sbuf[i]=(char)buf[0];
							i++;
						}else{
							String s=new String(sbuf,0,i);
							String []ss=s.Split(spil);
							i=0;
							//更新X,Y,Z
							if(ss.Length==3)
							{
								x=float.Parse(ss[0]);
								y=float.Parse(ss[1]);
								z=float.Parse(ss[2]);
							}
							//接着读取下一组欧拉角
						}
				}
			
			}

        }
        catch (Exception ex) 
        { 
            Debug.Log(ex); 
        }
    } 

   
 private void SendSerialPortData(string data) 
 { 
	 if(sp.IsOpen) 
	 { 
		 sp.WriteLine(data); 
	 } 
 } 
  
	void OnApplicationQuit() 
	{ 
	    sp.Close(); 
	} 
}



2018-11-05 17:06:20 oscarwsd 阅读数 4982

近期用到串口,遇到的一些坑,记录一下。先看代码:

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO.Ports;
using System.Text;
using System.Threading;
using System.Xml;
using UnityEngine;

public class RecieveSport : MonoBehaviour
{
    public SerialPort port = null;
    private Thread tPort = null;
    private bool canRecieveMsg = true;
    public static RecieveSport _instance;
    public string tempMsg = "";

    public List<byte> listReceive = new List<byte>();
    string str;
    char[] strchar = new char[100];//接收的字符信息转换为字符数组信息
    // Use this for initialization
    void Start()
    {
        if (_instance == null)
        {
            _instance = this;
        }
        port = new SerialPort();
        OpenPort(LoadXml());

    }
    string LoadXml()
    {
        //创建xml文档
        XmlDocument xml = new XmlDocument();
        xml.Load(System.IO.Directory.GetCurrentDirectory() + "\\IP.xml");
        //得到objects节点下的所有子节点
        XmlNodeList xmlNode = xml.SelectSingleNode("HeadSelect").ChildNodes;
        //Debug.Log(((XmlElement)xmlNode[2]).GetAttributeNode("com").Value.ToString());
        //遍历所有子节点
        return ((XmlElement)xmlNode[2]).GetAttributeNode("com").Value.ToString();

    }
    // Update is called once per frame
    void Update()
    {
    }
    public bool OpenPort(string portName)
    {
        if (this.port != null && this.port.IsOpen == false)
        {
            try
            {
                this.port = new SerialPort(portName, 9600);
                this.port.ReadTimeout = 500;
                this.port.WriteTimeout = 500;
                this.port.Open();

                this.tPort = new Thread(new ThreadStart(PortReceive));
                this.tPort.IsBackground = true;
                this.tPort.Start();
                return true;
            }
            catch (Exception err)
            {
                throw err;
            }
        }
        else
        {
            throw new System.Exception("串口已经打开");
        }
    }

    void OnApplicationQuit()
    {
        canRecieveMsg = false;
    }
    void PrintData()
    {
        for (int i = 0; i < listReceive.Count; i++)
        {
            strchar[i] = (char)(listReceive[i]);
            str = new string(strchar);
        }
        Debug.Log(str);
        listReceive.Clear();
    }
    /// <summary>
    /// 按字节进行读取,每次读一个字节存放在List里,
    /// </summary>
    void DataReceive()
    {
        while (port != null && port.IsOpen)
        {
            Thread.Sleep(500);
            try
            {
                byte addr = Convert.ToByte(port.ReadByte());
                port.DiscardInBuffer();
                listReceive.Add(addr);
                PrintData();
            }
            catch
            {
                //listReceive.Clear();
            }
        }
    }
    /// <summary>
    /// 可以读取多个字符,即字节数组;但是需要的平台的是.net 4.6
    /// 将 Scripting Runing Vision 和Api Compatibility都改为.Net 4.6
    /// </summary>
    private void PortReceive()
    {

        try
        {
            while (canRecieveMsg)
            {

                Thread.Sleep(25);//这行是设定读取间隔,可以根据需要不使用
                if (!port.IsOpen)
                    return;
                int datalength = port.BytesToRead;
                if (datalength == 0)
                {
                    continue;
                }
                int i = 0;
                StringBuilder sb = new StringBuilder();
                while (i < datalength)
                {
                    byte[] ds = new byte[1];
                    int len = port.Read(ds, 0, 1);
                    sb.Append(Encoding.UTF8.GetString(ds, 0, len));
                    i += len;
                }
                Debug.Log(sb.ToString());
                //ProcessMsg(sb.ToString());
                //这里sb就是串口获取的数据
            }
        }
        catch { }
    }

    public void DataSend(string data)
    {
        port.Write(data);
    }
    private void OnGUI()
    {
        string test = "woshinibaba";
        if(GUILayout.Button("SendMessage"))
        {
            DataSend(test);
        }
    }
}

补充:XML文档

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<HeadSelect>
  <IP ip="192.168.xx.xx">
  </IP>
  <PORT port="8631">
  </PORT>
  <COM com="COM2">
  </COM>
</HeadSelect>

坑在代码里也注释了,
1、接收多个字符的时候代码运行环境和api应该是.net4.6。
2、还有就是Read()方法不会一次读完
3、线程的Sleep()方法是为了匹配程序的执行速度和返回速度。
tisp:代码复制即可运行。如果又说错的地方,欢迎指正!

2017-09-12 09:08:19 barenk 阅读数 3733
public class SerialCommunication : MonoBehaviour
{
    public GUIText gui;
    public string portName = "COM2";
    public int baudRate = 9600;
    public Parity parity = Parity.None;
    public int dataBits = 8;
    public StopBits stopBits = StopBits.One;


    int[] data = new int[6];//用于存储6位数据
    SerialPort sp = null;
    Thread dataReceiveThread;
    //发送
    string message = "";
    //byte[] message=new byte[8];
    void Start()
    {
        OpenPort();
        dataReceiveThread = new Thread(new ThreadStart(DataReceiveFunction));
        dataReceiveThread.Start();
    }


    void Update()
    {
        string str = "";
        for (int i = 0; i < data.Length; i++)
        {
            str += data[i].ToString() + " ";
        }
        gui.text = str;
        Debug.Log(str);
    }


    public void OpenPort()
    {
        sp = new SerialPort(portName, baudRate, parity, dataBits, stopBits);
        sp.ReadTimeout = 400;
        try
        {
            sp.Open();
        }
        catch (Exception ex)
        {
            Debug.Log(ex.Message);
        }
    }


    public void ClosePort()
    {
        try
        {
            sp.Close();
        }
        catch (Exception ex)
        {
            Debug.Log(ex.Message);
        }
    }


    public void WriteData(string dataStr)
    {
        if (sp.IsOpen)
        {
            sp.Write(dataStr);
        }


    }
    void OnApplicationQuit()
    {
        ClosePort();
    }

    void DataReceiveFunction()
    {
        byte[] buffer = new byte[128];
        int bytes = 0;
        int flag0 = 0xFF;
        int flag1 = 0xAA;
        int index = 0;//用于记录此时的数据次序
        while (true)
        {
            if (sp != null && sp.IsOpen)
            {
                try
                {
                    bytes = sp.Read(buffer, 0, buffer.Length);
                    for (int i = 0; i < bytes; i++)
                    {


                        if (buffer[i] == flag0 || buffer[i] == flag1)
                        {
                            index = 0;//次序归0 
                            continue;
                        }
                        else
                        {
                            if (index >= data.Length) index = data.Length - 1;//理论上不应该会进入此判断,但是由于传输的误码,导致数据的丢失,使得标志位与数据个数出错
                            data[index] = buffer[i];//将数据存入data中
                            index++;
                        }


                    }
                }
                catch (Exception ex)
                {
                    if (ex.GetType() != typeof(ThreadAbortException))
                    {
                        Debug.Log(ex.Message);
                    }
                }
            }
            Thread.Sleep(10);
        }
    }




    void OnGUI()
    {
        message = GUILayout.TextField(message);
        if (GUILayout.Button("Send Message"))
        {
            WriteData(message);
        }
        string by = "XX AA 03 31 20 51 00 00";
        if (GUILayout.Button("Send", GUILayout.Height(50), GUILayout.Width(100)))
        {
            WriteData(by);
        }
    }


}
2016-06-08 19:04:00 weixin_30786617 阅读数 10

工作中遇到了串口的问题,通过查资料&实验写出了下面代码;

关于串口的代码我在网上看了好多,一种是用事件来做,另外一种使用线程来做;(经过试验,unity无法用串口自带的事件进行数据读取);

看完以后,个人感觉比较麻烦,所以就用了下面的方式;

PS:也可以改成用IEnumerator 或者Invoke来写

  1 using UnityEngine;
  2 using System.Collections;
  3 using System.IO.Ports;
  4 using System;
  5 using System.Text;
  6 
  7 public class ProtTest : MonoBehaviour
  8 {
  9     //串口
 10     private SerialPort port = new SerialPort();
 11     //用于读取缓存区数据
 12     private byte[] readBuffer;
 13     //缓存byte转化的string
 14     private string byteConvertSave;
 15     //缓存没有用过的数据
 16     private string portDataSave = "";
 17     //缓存依照约定拆解的字符串
 18     private string[] portDataSplit;
 19     //缓存有效数据
 20     private string validData = "";
 21 
 22     private void Awake()
 23     {
 24         InitProp();
 25     }
 26 
 27     /// <summary>
 28     /// 初始化串口
 29     /// </summary>
 30     private void InitProp()
 31     {
 32         port.PortName = "COM3";
 33         port.BaudRate = 9600;
 34         port.Parity = Parity.None;
 35         port.DataBits = 8;
 36         port.StopBits = StopBits.One;
 37         port.Open();
 38     }
 39 
 40     void Update()
 41     {
 42         HandleProtData();
 43         DoSomething();
 44     }
 45 
 46     /// <summary>
 47     /// 接收处理串口字符串,将字符串转换为标准形式
 48     /// </summary>
 49     private void HandleProtData()
 50     {
 51         if (!port.IsOpen)
 52         {
 53             return;
 54         }
 55 
 56         //读取串口数据
 57         readBuffer = new byte[port.ReadBufferSize];
 58         try
 59         {
 60             int count = port.Read(readBuffer, 0, port.ReadBufferSize);
 61             //转化成字符串
 62             byteConvertSave = Encoding.ASCII.GetString(readBuffer, 0, count);
 63             if (count != 0)
 64             {
 65                 //保存字符串
 66                 portDataSave += byteConvertSave;
 67             }
 68         }
 69         catch (TimeoutException)
 70         {
 71         }
 72 
 73         //拆解字符串
 74         portDataSplit = portDataSave.Split('\n');//按照约定规则
 75 
 76         /* 下面这样做是因为串口传过来的字符串不一定是完整的
 77          * 比如说,正常的数据是
 78          * 第一次传输a,b,c,d;
 79          * 第二次传输c,f,b,g;
 80          * 可能传过来的数据就变成了
 81          * 第一次传输a,b,c,d;c,f
 82          * 第二次传输,b,g;
 83         */
 84         if (portDataSplit.Length > 1)
 85         {
 86             //倒数第二个数据是有效数据,因为是完整的
 87             validData = portDataSplit[portDataSplit.Length - 2];
 88             //及时清除无用数据
 89             //将当前未使用的数据更新为倒数第一个数据
 90             portDataSave = portDataSplit[portDataSplit.Length - 1];
 91         }
 92     }
 93 
 94     /// <summary>
 95     /// 做什么东西
 96     /// </summary>
 97     private void DoSomething()
 98     {
 99         CheckData();
100     }
101 
102     /// <summary>
103     /// 检查数据是否符合规则
104     /// </summary>
105     /// <returns></returns>
106     private bool CheckData()
107     {
108         return false;
109     }
110 }

 PS:最后说一下遇到的问题和解决方法:

问题:那就是找不到SerialProp这个类,当我引入using System.IO.Ports的时候,报错说找不到该命名空间。

解决方法:playersetting里面Api Compatibility Level 选择 .NET2.0而不是 .NET2.0 SubSet。

 

转载于:https://www.cnblogs.com/singledigit/p/5568871.html

unity串口通讯总结

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