COM PORTS PROBLEM

Question

0.00/5 (No votes)

See more:

I have a microcontroller connected to serial comports PIN 2 only. my problem is what command i used in c++/c#/vb to read data in PIN2. can anybody programmer help or software developer help regarding my problems. i am beginner of the said above programming laguage. thanks in advance.

Posted 25-Oct-10 2:04am

MikelDavao

Updated 26-Oct-10 22:45pm

Richard MacCutchan

v2

Add a Solution

Comments

DaveAuld 25-Oct-10 8:06am

Well it would help if you pick a language of choice? they are all different!

4 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Rajesh Anuhya · Answer 1 · 2010-10-25T02:23:00

Actually I am Confused with your Question .., Keep Side about Programming Languages.., You are telling only PIN2 is Connected. what i understood is that 9 pin connector(comport) the PIN2(Rx-Data Receive) is connected. only.., if PIN3(Tx-Data Transmit) is not connected how you send the command to the controller..,

Go through the below link for PIN Connector table
http://www.dataip.co.uk/Reference/Serial9DPinOut.ph[^]

MikelDavao · Answer 2 · 2010-10-25T18:37:00

I am very thankful to your response. i think it is a device not a microcontroller. This device is what we called coins slot/acceptor, they have 4 wires, the 1st & 2nd wire is 12volts & ground which i am directly connect to the pc power supply, the 3rd one is not important to me and the 4th wire i put it to the pin2 comports.

the 4th wire i notice are giving increase of volts when there is coins drop to the slot/acceptor, which i see in multitester.

this time, i plan to build a software which trigger by this device connected to pin2 comports and link to my program.

like example... countdown timer,
instead i am going to input data for my countdown timer this time the device is only the one to input data.

i hope other programmers those who have knowledge in comports programming will give me idea what command i am use in vb or c++ or c#.

thank you and more power.

Rajesh Anuhya · Answer 3 · 2010-10-25T19:05:00

Solution 3

So.., You want to read signal for every coin drops into the device..,

Go through the below link for Serial Port Data receive event.

http://msdn.microsoft.com/en-us/library/system.io.ports.serialport.datareceived.aspx[^]

Posted 25-Oct-10 19:05pm

Rajesh Anuhya

MikelDavao · Answer 4 · 2010-10-26T18:58:00

Solution 4

thank you very much for the link... i'll try that one....

Posted 26-Oct-10 18:58pm