Error - Unable to open port...

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Hello,

I am using GsmComm.GsmCommunication library and I have a problem while sending messages.

I am sending more than one message at a time in a loop. There are about 150 messages to send in my database. When I am sending the messages, sometimes it sends 25 and sometimes 30 messages, then it shows the error "unable to open port" meaning it doesn't send all messages at a time. When I run my application again, it sends 20 or 30 messages then I get the same error.

I am using a Nokia e50 device.

Can anyone please tell me the solution?

Thanks in Advance.

Regards

Posted 29-Jun-10 23:45pm

ManishPinjani

Updated 29-Jun-10 23:47pm

Johnny J.

v2

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Kristian Sixhøj 30-Jun-10 6:00am

Hi, please update your question so it includes the relevant source code - it's easier for people to help you then.

Ankur^\m/ 1-Jul-10 2:14am

I have moved your reply to the comment. This is the correctly way of replying to the user.

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Ankur^\m/ · Accepted Answer · 2010-06-30T01:32:00

Solution 1

I guess the port is becoming too busy to send/receive any data.

I would suggest you to wait for few seconds after sending some messages (say 10 or 15). So do something like this:

C#

for (int i = 0; i < messageCount; i++)
{
    if (i % 15 == 0)
    {
        System.Threading.Thread.Sleep(10000);
    }
    //code for sending message
}

Here after every 15 messages I am stopping the processing for 10 seconds.

I hope you got the idea. Try this and let me know if it helps. :thumbsup:

Posted 30-Jun-10 1:32am

Ankur^\m/

Comments

Ankur^\m/ 1-Jul-10 2:12am

[Moved from answer]:
ManishPinjani wrote: "thanks dear for reply. but i delay for 2 seconds after each message.."

Ankur^\m/ 1-Jul-10 2:16am

Glad to help you!
I would also like to suggest you to do some testing with various time delay to determine the best interval.