How to Communicate With Serial Port on a WWAN Modem Using C# -

-

i have written program in c# allows me communicate (using @ commands) serial ports inside of our computers. code find ports looks this:

managementobjectsearcher searcher = new managementobjectsearcher("root\\cimv2",                 "select * win32_pnpentity");              //this loops through results searcher             foreach (managementobject queryobj in searcher.get())             {                 //if finds port,                  if (queryobj["caption"].tostring().contains("##### wireless at"))                 {                     //it writes file                     sw.writeline("serial port : {0}", queryobj["caption"] + "\n");                     sw.flush();                 }

this code works splendidly our older modems, searches through com ports , finds @ wireless command port. port send @ commands to. here 2 pictures of device manager of ports searching for

xp

windows 7

the issue is, rolling out our computers newer modems, , these work differently...

the new modems not use serial ports physical listing of ports in device manager. also, serial port not show in win32_pnpentity search... serial port listed under modem properties.

the new modem

my question is, how find serial port of modem using c#?

please let me know if there way can elaborate.

-luke

luke,

you have change how query management tree.

using system.io.ports; using system.managment; using system; private void setport()     {         string[] allports = serialport.getportnames();         bool found = false;         serialport port;          (int = 0; < allports.length; i++)         {             var searcher = new managementobjectsearcher("root\\wmi", "select * msserial_portname");             foreach (managementobject queryobj in searcher.get())             {                 string instancename = queryobj["instancename"].tostring();                  if (instancename.indexof("your modem string", stringcomparison.ordinal) > -1)                 {                     string portname = queryobj["portname"].tostring();                     port = new serialport(portname, 9600, parity.none, 8, stopbits.one);                     found = true;                     break;                 }             }              if (found) break;         }     }

in loop, code creates serial port @ commands sent. hope helps.

regards, marc


Comments

Post a Comment

Popular posts from this blog

mysql - Dreamhost PyCharm Django Python 3 Launching a Site -

-
i'm new python/django , created simple django website using pycharm. site works fine running on computer, i'm lost when comes taking site onto host (dreamhost). i'm able upload files correct directories fine, , believe made correct changes database on mysql. i'm not sure go there though. right now, page shows files rather site. direction appreciated. much! you should not run django application using python manage.py runserver on production. how run application on django depends on server (apache, nginx) want use for apache - https://docs.djangoproject.com/en/1.10/howto/deployment/wsgi/modwsgi/ for nginx - https://www.digitalocean.com/community/tutorials/how-to-serve-django-applications-with-uwsgi-and-nginx-on-ubuntu-14-04 the mysql database should, of course, exist , have correct credentials. or, if choose use sqlite, file should accessible, readable , writable www-user (may different depending on linux distributive)
Read more

java - Sending SMS with SMSLib and Web Services -

-
i have made rest web service send smss using hsdpa usb modem. using smslib in java send smss. every time web service invoked, create gateway start service, send message, stop service , remove gateway. takes 20 seconds each message. found starting service takes lot of time. part of code use send smss service.getinstance().addgateway(gateway); service.getinstance().startservice(); outboundmessage msg = new outboundmessage(phonenumber, message); if (service.getinstance().sendmessage(msg)) { result = "message sent successfully!!"; } else { result = "could not send message."; } service.getinstance().stopservice(); service.getinstance().removegateway(gateway);//remove gateway is there way can start service once if not started , use send message when ever web service invoked? why dont group messages , send in 1 go? service.getinstance().sendmessages(messa...
Read more

java - How to resolve The method toString() in the type Object is not applicable for the arguments (InputStream) -

-
i'm trying read json file local machine. @path("/") public class jsonparsing { file f = new file("file.json"); if (f.exists()){ inputstream = new fileinputstream("file.json"); string jsontxt = ioutils.tostring(is); system.out.println(jsontxt); jsonobject json = new jsonobject(jsontxt); string = json.getstring("1000"); system.out.println(a); } } but i'm getting error in tostring() method. possible read .txt file containing json object local machine? if possible, how done? firstly: whenever ask question- add imports well. secondly: yes possible read .txt file containing json object. steps: 1. add maven dependency in pom.xml - <dependency> <groupid>com.googlecode.json-simple</groupid> <artifactid>json-simple</artifactid> <version>1.1.1</version> </dependency> or add jar of dependency. 2.import...
Read more