OpenEuphoria

Re: COM Ports and Open

• Posted by Igor Kachan <kinz at peterlink.ru> Apr 10, 2001
• 479 views

Ýòî ñîîáùåíèå â ôîðìàòå MIME ñîñòîèò èç íåñêîëüêèõ ÷àñòåé.

------=_NextPart_000_01C0C1DA.522101A0

Hi Florian,

>Is there any routine or anything else to 
> know with wich parameters a COM port is open.

Try program from attachment  (-: *AS IS* 

On my machine, there are 4 COM-ports,
1- mouse, 2-modem, so I have tried COM4.

If I open("COM4","rb") --- fn = 3,
but machine *HANGS UP*, when getc(fn).

If I  ** open("COM4 96","rb") ** --- fn = 3
and getc(fn) gives

123
49
44
125
-1
-1
-1

If I open("COM4 48","rb") --- fn = - 1
So, I think, open() function opens
COM-port at 96, (9600 baud), but
this speed must *be* in the command.
My machine run Win95 and hangs up
both on plain DOS and Win95.

All my actions are non-documented,
remember please, this area is among
BIOS interruptions and Win95 drivers.

This is the very rare thing.

Regards,
Igor Kachan
kinz at peterlink.ru


 
------=_NextPart_000_01C0C1DA.522101A0
Content-Type: application/octet-stream; name="Md.ex"
Content-Transfer-Encoding: 7bit
Content-Description: Md.ex (EX )
Content-Disposition: attachment; filename="Md.ex"

integer fn,a
fn=open("COM4 96","rb")
?fn
a= system_exec("mode COM4 /status",1)

for i=1 to 8 do
? getc(fn)
end for

close(fn)
--   "CON" - the console (screen)
--   "AUX" - the serial auxiliary port
--   "COM1" - serial port 1
--   "COM2" - serial port 2
--   "PRN" - the printer on the parallel port
--   "NUL" - a non-existent device "black hole"


------=_NextPart_000_01C0C1DA.522101A0--