JP1 Remotes

Silk · Joined: 26 May 2004 Posts: 7 Location: Florida

Hi Y'all,
Been a member for a while now, this is my 1st post. Want to give a big thanks to The Robman, Nils_Ekberg, Mark Pierson, mr_d_p_gumby, mpauker, gfb107, johnsfine and e34m5for for all the excellent work you've done and continue to do! You guys are the best!

I use my 15-1995 with IR Timed Macros as a VCR Programmer. I'd like to have a Notes colum after Keys so I could add the names of the TV shows scheduled and it would be great to be able to print that page. Right now I use PrtScn, paste into Paint, print it and pencil in the shows but sometimes all the rows won't fit.

The RDF is for my 15-1925. RemoteChart.xls shows 2 signatures O80A and O80C but there is no O80C RDF. I think mine must be O80C cause I've always gotten an error in IR when Downloading From Remote. Is the O80C RDF posted somewhere? If not could it please be included in the next release?

With Warmest Regards,
Steve

The Robman · Posted: Sat Aug 28, 2004 12:17 pm Post subject:

This is one for Mike (mr_d_p_gumby)
_________________
Rob
www.hifi-remote.com
Please don't PM me with remote questions, post them in the forums so all the experts can help!

mr_d_p_gumby

gklement · Joined: 29 Aug 2004 Posts: 5

johnsfine · Posted: Sun Aug 29, 2004 5:40 pm Post subject:

Most of us already can power the eeprom from the interface and write the eeprom without batteries. I don't know whether the 8060 is different, or your LPT port is different or you JP1 cable is different.

gklement · Joined: 29 Aug 2004 Posts: 5

My interface is a simple paralle port interface with no active komponets and now I have an external power supply connected to U2 (EEPROM supply voltage. But what I whant is to power the EEPROM through the paralle port eg. by data pins D5-7.

After starting IR.exe all data pins D0-7 are held low. Maybe there are other control lines held high but these are not explained in the Simple Interface Rev 5 doc file.

So why not switch D5-7 high after starting ir.exe?

Günther

Mark Pierson · Posted: Mon Aug 30, 2004 2:18 pm Post subject:

I'm not sure I understand what (or why) it is you're trying to do. Are you looking to be able to use a JP1 connection without batteries in the remote? If that's it, have your tried it that way? As John said above, many people can use the Simple interface without batteries in the remote.
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Mark

gklement · Joined: 29 Aug 2004 Posts: 5

Maybe we are talking of different interface descriptions. The one I'm talking about let the power pins unconnected and shows U1 wired to U2 (Pin 1 and 2 of JP1). The file name is SimpleRev5-pdf.

I think that leaving the CPU power off (U1) is equal to the reset state of the CPU. There is no need to supply the CPU with current and driving some leds. The EEPROM (U2) needs much less current which can be supplied by any parallel port pin. So when programming the EEPROM only the EEPROM must be supplied with current.

I just tried it with PIN 12 of the parallel port (I don't know what it is for but it outputs 4.8 Voltage) and ir.exe worked fine when wiring PIN 12 to U2.

There are many other programming tools on the internet eg. avrdude for the atmel cpu. These tools normal have a lot of command line options. With avrdude you can even configure every pin of the interface what it should do. These tools may also give you some hints what options are usefull.

Maybe it's more a problem of the documentation which doesn't say anything about powering the JP1 interface. With installed batteries there is no need for this of course.

Günther

Mark Pierson · Posted: Tue Aug 31, 2004 2:20 pm Post subject:

IIRC, Tommy Tyler (designer of the Simple interface) once told me that the EEPROM actually gets some power through the SDA and SCL lines, which is why it works in many remotes without batteries.

I know next to nothing about hardware, so I can't say one way or the other that what you want to do is possible. My concerns would be for an over-voltage situation that could damge the EEPROM.
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Mark