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muhammedan
Joined: 18 Feb 2009
Posts: 5
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 28 Feb 2009 13:34 serial port |
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| hello everybody.I want catch directly 1Hz frequency from pin's of com port (in other word if i connect one led directly to the serial port it regularly on and off).Is it operative and how?
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maheshkuruganti
Joined: 18 May 2007
Posts: 108
Helped: 3
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07 Mar 2009 7:25 serial port |
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| It can be done very easily. What language are you using ??
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saubhik
Joined: 27 Apr 2007
Posts: 141
Helped: 8
Location: India
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10 Mar 2009 5:07 Re: serial port |
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| muhammedan wrote: |
| hello everybody.I want catch directly 1Hz frequency from pin's of com port (in other word if i connect one led directly to the serial port it regularly on and off).Is it operative and how? |
Man ....
U r using which type of serial comm RS232 .... then to check that ur serial port is working or not just short pin nos 2 & 3 with any metal body and open Hyperterm of the PC and check that whatever you are writing is getting back to u or not .....
if it is then the comm lines are healthy ....else it is faulty .....[ ]
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10 Mar 2009 5:07 Ads |
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muhammedan
Joined: 18 Feb 2009
Posts: 5
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12 Mar 2009 14:35 Re: serial port |
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| I am using c++ language.
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mezo
Joined: 16 Jul 2007
Posts: 82
Helped: 4
Location: Egypt
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17 Mar 2009 17:50 serial port |
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This is good you see that link:
i have made this type of interface with microcontroller
AT89c52 connected with LEDs.
http://www.edaboard.com/viewtopic.php?t=317207&highlight=
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abo_obayd
Joined: 03 May 2009
Posts: 4
Location: Egypt
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03 May 2009 16:09 Re: serial port |
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Hi There!,
I think in your case u need to use the RTS pin.
The EscapeCommFunction API enables u to do so.
u can find it here:
http://msdn.microsoft.com/en-us/library/aa363254(VS.85).aspx
just use the RTS setting function and and sleep function.
I hope that helped.
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