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Reading status of serial port pins

DMT · 2003-08-09 16:58:13

Can someone post some code that will read the level of the com port (RS232) lines under MSDOS/Windows? I'm trying to write a small decoder program for an interface that uses only the CTS line of the serial port for it's output, to provide either logic 1 or logic 0.

09-08-2003 4:58pm

#1

DMT

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Can someone post some code that will read the level of the com port (RS232) lines under MSDOS/Windows?

I'm trying to write a small decoder program for an interface that uses only the CTS line of the serial port for it's output, to provide either logic 1 or logic 0.

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#2 14-08-2003 7:35pm

dazberry

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Originally posted by DMT
Can someone post some code that will read the level of the com port (RS232) lines under MSDOS/Windows?

No. Its been too long. From a purely windows (32) point of view look at the GetComm**** API calls, notably the GetCommMask call with a mask of EV_CTS. I really don't remember the DOS stuff anymore.

D.

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