I was thinking a driver issue, but the face that minicom works pretty much rules that out. It was minicom on the same Linux image, right?
Bruce > On Feb 2, 2016, at 8:47 AM, Bill Turner, WB4ALM <wb4...@arrl.net> wrote: > > This has been cross-posted to "ooRexxUsers" and "ooRexx-devel" > ============================================================== > I am now a volunteer and am associated with a County Emergency > Operations Center, and I need to put some "very old" radio > equipment back into service... > > ...some of which likes to communicate with a computer via an RS-232 > connection. Since most modern computers do not have RS-232 ports > anymore, I have purchased an RS-232 USB adapter cable. > > I am finding that my knowledge on how to use ooRexx to communicate > with an RS-232 port is VERY limited... > ...and I am having problems making it work. > > 1. I will be using this equipment with Windows 10 and with Linux. > My primary test environment is Linux: Ubuntu 14.04 with Cinammon > (Don't like UNITY!) > 2. ooRexx 4.2 on all systems. > 3. The USB cable shows up as /dev/ttyUSB0 under Linux > and as COM1 under windows. > 4. The external equipment works in a half-duplex mode. > You send it a command and it responds with an answer. > The "commands" are formatted in a manner very similiar to > the old Hayes modem commands, I.E. > "AT" followed by a command text followed by a carriage return > (all upper case!) > > > I know that the hardware works, since I can use "minicom" on Linux > to communicate with the external device, which only supports > 300 or 1200 baud, 8-bits no-parity or 7-bits even/odd parity. > > > Questions: > 1. Is there a way to specify port speed, parity, etc. from INSIDE > the ooRexx routine? > > Under Linux, I can use "stty" externally, but can not invoke it > internally from the ooRexx routine because the change is not > maintained for the remainder of the duration of the rexx exec. > (apparently this is an Enviromental/Shell issue... ???) > > 2. More importantly, does anybody have a simple read/write ooRexx > sample that can talk to a com port? (I beleive that stream IO > and charin/charout are required. Lineout doesn't seem to > transmit anything, but charout does.) > > I can get my routine to transmit, but I do not seem to be able > to receive any data. > > Normal use: I send a command like "ATRT" <CR>, and it responds > with a 6-digit message and a <CR> or <CRLF>. > > > 3. I know that data is being transmited, because I can see the > "flashing lights" on my rs-232 test adapter. I think, however, > that the speed or parity might be wrong, as the remote device > does not seem to be responding. > > As I said, the remote device uses commands that start with "AT" > like those used in the old Hayes modems, and it will respond > with either a "0" <CR> or possibly a 4 to 8 character message and > a <CR> when it recognizes a command request. > > 4. any help would be appreciated. > > /s/ Bill Turner, wb4alm > > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Oorexx-users mailing list > Oorexx-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/oorexx-users
signature.asc
Description: Message signed with OpenPGP using GPGMail
------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140
_______________________________________________ Oorexx-users mailing list Oorexx-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/oorexx-users
