On Thursday, August 21, 2003, at 01:35 PM, R. Hillen wrote:

----- on mouseup put "/dev/cu.gPort" into DriverName

  put "BAUD=9600  PARITY=N  DATA=8  STOP=1" into serial
  set the serialControlString to serial

open driver DriverName for text update

There are a few bugs on OS X. I found the best success with binary update with LF line-ends.



if the result is not empty then answer the result end if

write fld SendField & linefeed & return to driver drivername

close driver drivername

end mouseup
-----

To read the sent serial data I used a Windows Hyperterminal running on a Win-Laptop.

Double check settings and handshaking for this.



What happened:


I typed "12345" into field SendField, pressed button "Send" and got garbage in the terminal, 1 or two chars, nothing of "12345".


I typed "1234567890" and got two garbage chars I again typed "1234567890" and got two garbage chars

At first glance, this looks like mismatched bit rate, but...


I again typed "1234567890" and got about 12 garbage chars.

This cycle was repeatable.


I typed "1234567890123456789012345678901234567890 1234567890" and got:
"12345678901234567890123456789012345678901234567890", followed by NewLine.


After that, I tried again with "12345" and got garbage (see above)

This is weird.


I'd make sure the ground is wired. The long lines working better than short seems to indicate this.

You might also have a ground loop. Try unplugging the laptop from other things.

Is the gPort really RS-232? Maybe you have level problems. If it is RS-422, you might be OK, but there might be problems depending on the wiring. If it is MIDI, I'm amazed you saw anything.

I dont know at this time, if it is a revolution- or a griffin-problem.
Next I will bugzilla it.

There are a few Revolution problems, but there seems to be something here beyond them.


I hope to get next week a USB2Serial adapter with OSX-drive, so I will try again.
Probably someone of you may test it also?

I will test on Revolution any serial devices that show up on my doorstop and report to all interested. Those accompanied by chocolate will be tested first. :-)


Dar

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    http://www.swcp.com/dsc/
    Programming Services
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