> Hi All,
>
> Two weeks ago, I was able to communicate with the OOPIC-R via the
serial
> port and now I can not. I am back to getting the "Cable Not Found"
> dialog. I have made no *INTENTIONAL* changes that I know of that would
> cause the serial link between the PC and the OOPIC to stop working.
>
> My setup: OOPIC-R and Windows XP running on Toshiba laptop.
> I have no printer port and no serial port, only USB.
>
> No serial to TTL level converter.
>
> *NO* null modem cable.
>
> When I do Tools...Cable Configuration...Find Serial Cable, I get the
> "Can not find a serial cable connected to an OOPIC" dialog.
>
> disabled LPT1 and COM1, USB shows up as COM3.
> device manager shows: USB Serial Port (COM3)
> same result.
>
> uninstalled LPT1 and COM1
> device manager shows: USB Serial Port (COM3)
> same result.
>
> reboot, COM1 and LPT1 reappear. uninstall COM1 and LPT1 drivers again.
> Find Serial cable => Found no installed serial ports to check.
>
> rename COM3 to COM1 => same
> "Can not find a serial cable connected to an OOPIC" dialog.
>
>
> Went to a PC with a real serial port (only one) and checked that is
was set
> to 9600 baud, no parity, and one stop bit. No better luck. One time,
I got the message
> "sent y and received fhsa(*(*^%$$#$" or something like that.
Sometimes received:
> "Can not find a serial cable connected to an OOPIC" dialog.
>
> Thank you for all help that you can offer.
>
> Larry Leitch
>
First, it is ALWAYS better to tell the IDE where the serial cable is
located than to have it try to find a cable.
Just because the IDE is trying to talk to the OOPic doesn't mean the
OOPic is listening. It should listen but if it is executing an errant
program, it won't.
So, try the famous 'cosmic wedgie' fix: Power down the OOPic and
remove the EEPROM. Power up and try to download a known good program;
certainly not the one that's in the OOPic now. I have a little
blinking LED program that I keep in the OOPic when I'm not using it
for just this reason.
With luck, when you try to download with no EEPROM, the IDE will pop a
dialog telling you to reinstall the EEPROM. Do so with the power on
(don't get it backwards!) and acknowledge the dialog. Everything
should proceed - with luck...
Now, ALWAYS put OOPic.Delay = 500 as the first executable statement in
your programs. This will allow the IDE to get the OOPic's attention
during the 5 second delay following reset.
You can verify your cable by using Hyperterminal (9600,n,8,1 no flow
control) and shorting pins 2 & 3 at the end of the cable. Characters
typed at the keyboard should echo.
There are USB<->Serial cables that don't like the voltage levels of
the R-board. The voltage levels do not comply with RS232 signal
levels but they will work with a PC serial port.
You can test the USB<->OOpic connection in Hyperterminal (set as
above) by typing \0V (backslash, zero, upper case V). You should get
a response of 'v' (lower case v). You can also do this from the
terminal window of the IDE. Since you are jammed up, I suspect you
will have to do this test with the EEPROM removed.
Richard
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