#63774 - 01/28/07 09:43 PM
USB to Serial Adapters
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Gunslinger
Registered: 01/12/06
Posts: 128
Loc: Longmont, Colorado
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Hi there, I'm trying to do the firmware upgrade using a USB to serial adapter. It's based on the Prolific 2303 chip. In in XP's Hardware Management, I see Com3, Com4 and Com6. I want to assign Com6 to be the device for the firmware loader, but I only get Com1 and Com2 as options in the loader. Is there any way around this without changing operating systems?
And actually, I'm just doing this as a test. I'm trying to build a little GUI to control the Outlaw and perhaps other things. I'd be interested to hear from others that might have tried this.
Thanks,
Otto
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#63775 - 01/29/07 07:30 AM
Re: USB to Serial Adapters
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Gunslinger
Registered: 07/23/06
Posts: 274
Loc: Washington, DC
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I am no expert on how the firmware loader was written, but it may be purposely scanning low com ports as a way to keep things simple.
I would suggest reassigning the com port on your USB adapter, unless there is a conflict.
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#63776 - 01/29/07 08:17 AM
Re: USB to Serial Adapters
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Gunslinger
Registered: 07/23/06
Posts: 274
Loc: Washington, DC
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I don't know if this interests you, but I am considering this for my much-delayed HTPC project. I already have the kit minus the RS232 cable, but the remote control distribution logic is not as straightforward as I originally thought, so I might have to rethink my mad world domination plan. Here's a link to a thread where Gonk, Elmosaurus and yours truly got into the subject of IR distribution on the 970 and 990. I only bring this up because it sounds like you might want to send commands to the 990 via RS232. I would expect that to work. Now passing those commands to the IR-out port on the back of the 990 is not mentioned in the manual so that part *may* not work. If it does, please let me know. One thing we do need is the RS-232 commands for the 990. If you read the "Outlaw guide to the SMS-1", Appendix A, you'll see what I mean. The outlaws did a nice job with that SMS-1 manual. It would be nice if some outlaw out there did something similar for the 990. Although I never seem to have enough time to tinker...
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#63777 - 01/29/07 10:46 AM
Re: USB to Serial Adapters
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Gunslinger
Registered: 01/12/06
Posts: 128
Loc: Longmont, Colorado
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Hi, Thanks for the responses. I may be interested in the remote thing later. I'll have to look at it. I use a Harmony 890, and takes care of most of my problems. Still, I want to be able to communicate with the 990 directly from the PC.
I was able to reassign my Com ports to 1 and 2, and the Outlaw firmware loader seemed OK with that. However, I just get the "Device Restart" message over and over. I tried with both my cables, on Com 1 and Com 2, reset the 990 several times, restarted my PC once.
Has anyone been able to do the firmware upgrade using the Com port as assigned through a USB to Serial cable?
As to the RS 232 codes, they're out there. Search this forum for rs232 protocol and you'll find it. You might need to "OK" the install of Korean fonts for Acrobat, but after that you should be able to view OK. That's what we're using to try to talk with the 990, and no luck...
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#63779 - 01/29/07 12:01 PM
Re: USB to Serial Adapters
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Gunslinger
Registered: 01/12/06
Posts: 128
Loc: Longmont, Colorado
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Yeah, I already did the upgrade through USB. I'm just trying to verify that my cable and PC can communicate with the 990 at all using USB to serial.
The software we wrote is not having any effect on the 990, so we're not sure if it's our software, the PC, the 990 or the cables.
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#63780 - 01/29/07 12:03 PM
Re: USB to Serial Adapters
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Gunslinger
Registered: 07/23/06
Posts: 274
Loc: Washington, DC
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Perhaps I am misunderstanding the issue but, does the 990 recognize discrete commands via the USB interface?
Otto, are you trying to do a firmware update or test whether you can communicate using the intended setup for the control utility you are planning on developing?
If you have communications established with the 990 and you know the RS232 commands, you should be able to test things by going to the command line and typing something like: ECHO [some command] > com2
I personally would not use the USB port on back of the 990 as I am not sure of the implications of sending commands to that port in the "service" mode. Having said that, I am wondering why not just use a plain old serial cable?
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#63781 - 01/29/07 12:05 PM
Re: USB to Serial Adapters
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Gunslinger
Registered: 07/23/06
Posts: 274
Loc: Washington, DC
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I see you already partially answered my question, Otto. Me and my long-winded posts...
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#63782 - 01/29/07 12:10 PM
Re: USB to Serial Adapters
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Gunslinger
Registered: 07/23/06
Posts: 274
Loc: Washington, DC
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Hmmm... I was just thinking if you could also try Hyperterminal. If the 990's RS232 port "talks back", you should be able to interact with the 990 by simply typing commands in Hyperterminal... I haven't tried any of this, you just got my mind going...
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#63783 - 01/29/07 12:16 PM
Re: USB to Serial Adapters
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Desperado
Registered: 03/21/01
Posts: 14054
Loc: Memphis, TN USA
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I haven't heard of anyone around here trying to use a USB-to-serial device to interact with the 990's RS232 control, so you may be the first to do so. Have you perused this thread ? There was some extensive discussion of using the RS232 protocols with a standard serial-to-serial connection, and there may be a few tidbits there that can help you troubleshoot the USB-to-serial RS232 connection.
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