[经验栈]C#与泰克示波器(Tektronix oscilloscope)MSO64通信操作 1、前言此次需要用到工具操作示波器动态配置和检验数据，下面为此次开发的一些总结记录。按理说这里应该用泰克(tektronix)提供的示波器(oscilloscope)驱动和API，但是我没有找到泰克提供的.NET版本的API，我又不是特别熟悉C封装到C#的开发，所以干脆使用了NI-VISA .NET，可能是没有使用到特殊驱动部分，使用并没有出现异常。2、安装环境1、NI-VISA3、C#代码using System; using System.Collections.Generic; using Ivi.Visa; using NationalInstruments.Visa; namespace VisaInstruments { public class NiVisaInstrumentsAPIs { private MessageBasedSession mbSession; private IVisaAsyncResult asyncHandle = null; public void FindResources(string filter) { using (var rm = new ResourceManager()) { try { IEnumerable<string> resources = rm.Find(filter); foreach (string s in resources) { //可以根据ParseResult查询出硬件类型，如Custom，Gpib，Serial，Usb等 //ParseResult parseResult = rm.Parse(s); //HardwareInterfaceType hardwareType = parseResult.InterfaceType; } } catch (Exception ex) { //处理错误 } } } public bool OpenInstrument(string address) { try { using (var rmSession = new ResourceManager()) { mbSession = (MessageBasedSession)rmSession.Open(address); //mbSession.SynchronizeCallbacks = true;使用异步方法需设SynchronizeCallbacks为true return true; } } catch (Exception exp) { return false; } } public void Write(string s) { mbSession.RawIO.Write(ReplaceCommonEscapeSequences(s)); } public string Read() { return InsertCommonEscapeSequences(mbSession.RawIO.ReadString()); } public void WriteAsync(string s) { try { string textToWrite = ReplaceCommonEscapeSequences(s); asyncHandle = mbSession.RawIO.BeginWrite( textToWrite, new VisaAsyncCallback(OnWriteComplete), (object)textToWrite.Length); } catch (Exception exp) { } } private void OnWriteComplete(IVisaAsyncResult result) { try { mbSession.RawIO.EndWrite(result); // "Success"; } catch (Exception exp) { } } public void ReadAsync() { try { asyncHandle = mbSession.RawIO.BeginRead( 1024, new VisaAsyncCallback(OnReadComplete), null); } catch (Exception exp) { } } private void OnReadComplete(IVisaAsyncResult result) { try { string responseString = mbSession.RawIO.EndReadString(result); string info = InsertCommonEscapeSequences(responseString); } catch (Exception exp) { } } public void AbortRW() { try { mbSession.RawIO.AbortAsyncOperation(asyncHandle); } catch (Exception exp) { } } private string ReplaceCommonEscapeSequences(string s) { return (s != null) ? s.Replace("\\n", "\n").Replace("\\r", "\r") : s; } private string InsertCommonEscapeSequences(string s) { return (s != null) ? s.Replace("\n", "\\n").Replace("\r", "\\r") : s; } } }4、实体按钮对应指令重新设置参数 --- *RST 前面板Autoset按钮 ---- AUTOSet EXECute 前面板通道1,2,3,4按钮 --- DISplay:GLObal:CH1:STATE on ACQUIRE:STOPAFTER RUNSTOP 前面板Single/Seq按钮 --- ACQUIRE:STOPAFTER SEQuence 前面板放大镜按钮 --- DISplay:WAVEView1:ZOOM:ZOOM1:STATe ON 前面板Default setup按钮 --- FACtory 需要先执行此条命令解锁命令操作旋钮 HORIZONTAL:DELAY:MODE ON 前面板HORizontal区域position旋钮 -- HORizontal:DELay:TIME 0.3 前面板HORizontal区域scale旋钮 HORIZONTAL:MODE:SCALE 0.5e-3 HORIZONTAL:MODE:SCALE? 前面板vertical区域scale旋钮 CH1:SCAle 100E-2 前面板vertical区域position旋钮 CH2:POSition -2.0 前面板touch off按钮 --- TOUCHSCReen:STATe OFF 前面板trigger区域force按钮 --- TRIGGER FORCE 前面板trigger区域mode按钮 --- TRIGger:A:MODe {AUTO|NORMal} 前面板A,B旋钮 --- TRIGger:{A|B|B:RESET}5、简单测量参数指令//设定读取通道和参数 MEASUREMENT:MEAS1:TYPE AMPLITUDE MEASUREMENT:MEAS1:SOURCE CH1 //读取信息 MEASUREMENT:MEAS1:RESUlts:CURRentacq:MEAN? //删除测试信息 MEASUREMENT:DELETE "MEAS1" //截屏 SAVE:IMAGE "C:/Dut12–tests.png" //可测参数列表 MEASUrement:MEAS<x>:TYPe {ACCOMMONMODE|ACRMS|AMPlITUDE|AREA|BASE|BITAMPLITUDE|BITHIGH|BITLOW|BURSTWIDTH|COMMONMODE|DATARATE|DCD|DDJ|DDRAOS|DDRAOSPERTCK|DDRAOSPERUI|DDRAUS|DDRAUSPERTCK|DDRAUSPERUI|DDRHOLDDIFF|DDRSETUPDIFF|DDRTCHABS|DDRTCHAVERAGE|DDRTCKAVERAGE|DDRTCLABS|DDRTCLAVERAGE|DDRTERRMN|DDRTERRN|DDRTJITCC|DDRTJITDUTY|DDRTJITPER|DDRTPST|DDRTRPRE|DDRTWPRE|DDRVIXAC|DDRTDQSCK|DELAY|DJ|DJDIRAC|DPMOVERSHOOT|DPMUNDERSHOOT|DPMRIPPLE|DPMTURNOFFTIME|DPMTURNONTIME|EYEHIGH|EYELOW|FALLSLEWRATE|FAHIGH|HEIGHT|HEIGHTBER|HIGHTIME|HOLD|JITTERSUMMARY|J2|J9|LOW|LOWTIME|MAXIMUM|MEAN|MINIMUM|NDUtY|NPERIOD|NPJ|NOVERSHOOT|NWIDTH|PDUTTY|PERIOD|PHASE|PHASENOISE|PJ|PK2Pk|POVERSHOOT|PWIDTH|QFACTOR|RISESLEWRATE|RISETIME|RJ|RJDIRAC|RMS|SRJ|SSCFREQDEV|SSCMODRATE|SETUP|SKEW|TIE|TIMEOUTSIDELEVEL|TJBER|TNTRATIO|TOP|UNITINTERVAL|VDIFFXOVR|WIDTH|WIDTHBER|}6、简单的GPIO测试用例//设置垂直刻度为300mv CH1:SCAle 300E-3 //位置为-3div CH1:POSition -3.0 //耦合为DC CH1:COUPLING DC //设置水平刻度为20ms HORIZONTAL:MODE:SCALE 20e-3 //打开采集 ACQUIRE:STATE ON //测量最大电压 MEASUREMENT:MEAS1:TYPE MAXIMUM MEASUREMENT:MEAS1:SOURCE CH1 //测量最小电压 MEASUREMENT:MEAS2:TYPE MINIMUM MEASUREMENT:MEAS2:SOURCE CH1 //测量高值 MEASUREMENT:MEAS3:TYPE TOP MEASUREMENT:MEAS3:SOURCE CH1 //测量低值 MEASUREMENT:MEAS4:TYPE BASE MEASUREMENT:MEAS4:SOURCE CH1 //停止采集 ACQUIRE:STATE OFF //设置标签 CH1:LABEL:NAME "GPIO1HIGH" //截屏 SAVE:IMAGE "G:/GPIO1HIGH.png"参考资料4, 5, 6 Series MSO (MSO44, MSO46, MSO54, MSO56, MSO58, MSO58LP, MSO64, LPD64) Programmer ManualTEKVISA Connectivity Software - V4.2.0

[经验栈]C#监测IPv4v6网速及流量 1、前言  最近做项目需要用到监测网速及流量，我经过百度和墙内谷歌都没能快速发现监测IPV6流量和网速的用例；也经过自己的一番查询和调试，浪费了不少时间，现在作为经验分享出来希望大家指正。2、C#代码using System.Net.NetworkInformation; using System.Timers; namespace Monitor { public class MonitorNetwork { public string UpSpeed { get; set; } public string DownSpeed { get; set; } public string AllTraffic { get; set; } private string NetCardDescription { get; set; } //建立连接时上传的数据量 private long BaseTraffic { get; set; } private long OldUp { get; set; } private long OldDown { get; set; } private NetworkInterface networkInterface { get; set; } private Timer timer = new Timer() { Interval = 1000 }; public void Close() { timer.Stop(); } public MonitorNetwork(string netCardDescription) { timer.Elapsed += Timer_Elapsed; NetCardDescription = netCardDescription; timer.Interval = 1000; } public bool Start() { networkInterface = null; NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces(); foreach (var var in nics) { if (var.Description.Contains(NetCardDescription)) { networkInterface = var; break; } } if (networkInterface == null) { return false; } else { BaseTraffic = (networkInterface.GetIPStatistics().BytesSent + networkInterface.GetIPStatistics().BytesReceived); OldUp = networkInterface.GetIPStatistics().BytesSent; OldDown = networkInterface.GetIPStatistics().BytesReceived; timer.Start(); return true; } } private string[] units = new string[] {"KB/s","MB/s","GB/s" }; private void CalcUpSpeed() { long nowValue = networkInterface.GetIPStatistics().BytesSent; int num = 0; double value = (nowValue - OldUp) / 1024.0; while (value > 1023) { value = (value / 1024.0); num++; } UpSpeed = value.ToString("0.0") + units[num]; OldUp = nowValue; } private void CalcDownSpeed() { long nowValue = networkInterface.GetIPStatistics().BytesReceived; int num = 0; double value = (nowValue - OldDown) / 1024.0; while (value > 1023) { value = (value / 1024.0); num++; } DownSpeed = value.ToString("0.0") + units[num]; OldDown = nowValue; } private string[] unitAlls = new string[] { "KB", "MB", "GB" ,"TB"}; private void CalcAllTraffic() { long nowValue = OldDown+OldUp; int num = 0; double value = (nowValue- BaseTraffic) / 1024.0; while (value > 1023) { value = (value / 1024.0); num++; } AllTraffic = value.ToString("0.0") + unitAlls[num]; } private void Timer_Elapsed(object sender, ElapsedEventArgs e) { CalcUpSpeed(); CalcDownSpeed(); CalcAllTraffic(); } } } 3、胡说八道  虽然没能直接快速地百度到方法，但是实现这个需求的时候，心里是有个谱，Windows系统能监测到这个网速和流量，没理由实现不了，只需要一个方法将这个信息读取出来就好。最后实现这个需求是利用了System.Net.NetworkInformation这个程序集，但是这个程序集没有只接提供网速监测的方法，而是提供了接收和发送数据量的属性，需要自己计算出即使网速，所以这个网速不是特别的准确。  这个程序集其实一开始就看到了，前辈方法中使用的是IPv4InterfaceStatistics类中的BytesReceived属性和BytesSent属性实现的，但是在这个程序集里没有对应的IPv6类，恍恍惚惚。  然后呢，我就下意识以为这个程序集比较老旧，不支持IPv6统计信息读取，然后也是各种搜索无果，之后呢不死心想再来研究研究，东点点西瞅瞅，然后在NetworkInterface 类中发现了一个GetIPStatistics()方法，它的描述是“获取此 NetworkInterface 实例的 IP 统计信息。”。  然后就顺理成章的事了，根据GetIPStatistics()返回的IPInterfaceStatistics实例中的BytesReceived属性和BytesSent属性就能获取到收发的数据总量，然后根据这个信息就能计算出大约的网速。  经测试，利用IPInterfaceStatistics实例是能读取到IPv4和IPv6的总数据量的，因为这次的需求就是监测总量，如果需要单独监测IPv6的可以用总量减去IPv4部分。4、后记​  老师以前喊我认真念书，我心想有百度还不够吗，再念能有百度聪明，有百度懂得多，后来渐渐明白，百度懂得多都是前辈的搬砖添瓦来的，共勉。参考资料  System.Net.NetworkInformation 命名空间