JP1 Remotes

binky123 · Expert Joined: 14 Feb 2004 Posts: 1292

It might be possible to use an unused function code to switch unit #'s while keeping with only 1 device+protocol upgrade. Depending on the size, you might be able to squeeze the AV switcher protocol into it also. If it can't be done, then he'll have to reload the device+protocol upgrades via the Slingbox UI each time he wants to control another device.

jeffjohnson14 · Joined: 10 Jul 2007 Posts: 13 Location: Southern Minnesota

I checked out the Tivo's at lunch.

If I put all 3 in standby, it requires a press of the TIVO button to start-up. When I press the TIVO button on the code 0 remote they all turn on.
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sfhub · Joined: 12 Oct 2003 Posts: 287

You basically wouldn't use the TiVo or LiveTV button anymore.

There is an IR that goes directly to the Now Playing list. It isn't on the original TiVo remote, but it can be programmed in (I use it on my JP1 remotes). The difference with the direct "Now Playing" IR is it doesn't turn any units on. Only units that are already on will respond. After getting to Now Playing, you press left arrow, and you are at the main TiVo menu, where you can access all the functions including LiveTV.

I think it is better to wait to see what response Rob gets because getting a single device upgrade to handle all your TiVo's will be a more elegant situation.

The Robman · Posted: Sat Jul 21, 2007 11:27 am Post subject:

sfhub · Joined: 12 Oct 2003 Posts: 287

The Robman · Posted: Sat Jul 21, 2007 9:38 pm Post subject:

There isn't a Tivo Combo, at least not yet, I was just saying that I think I remember that the original UEI version of the Tivo protocol used two variable bytes, where the 2nd byte was more or less the unit code. I would need to sort through the old files to find it though.
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sfhub · Joined: 12 Oct 2003 Posts: 287

Sorry, I'm a little dense today, what is the significance of whether it uses a 2-byte dev section with the 2nd byte being the unit code, or a 3-byte dev section with the 3rd byte being the unit code, or a fixed dev section with the cmd being 2-bytes. It seems like in all those cases with enough motivation the unit code can be made to vary within a single upgrade.

Are you suggesting this information as a precursor to writing a custom protocol handler?

The Robman · Posted: Sat Jul 21, 2007 11:09 pm Post subject:

OK, it will probably make more sense if you know what the format of the Tivo signal is. It's based on the traditional NEC format, which is...

8-bit device code
8-bit sub-device code
8-bit command code (ie, OBC)
8-bit complement of command code

For the Tivo version, they replaced the first 4 bits of the complement of the command code with a 4-bit unit code.

When UEI first created their executor for Tivo, they didn't know how to automatically generate the 2nd variable byte (ie, the one that's partially a complement and partially a unit code) so they just made the executor use 2 variable bytes. Eventually, they figured out the unit code thing, and they added a fixed byte where you can enter the unit code and the executor code will automatically put it where it's supposed to be in the signal. The benefit of this revised version was that it uses 1 byte of code per button rather than 2.

Up until now, nobody has needed a "Tivo Combo" protocol, which is in effect what UEI created the first time around, so we've never added support for one.

I won't need to write one for you, I will just need to fig through the archives and find UEI's original version, then I'll need to put something together for protocols.ini so you can use it in RM.
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Rob
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sfhub · Joined: 12 Oct 2003 Posts: 287

sfhub · Joined: 12 Oct 2003 Posts: 287

Based on your suggestion of a TiVo combo this is what I put together. It appears to work as advertised.

sfhub · Joined: 12 Oct 2003 Posts: 287

Capn Trips · Expert Joined: 03 Oct 2003 Posts: 3990

The Robman · Posted: Sun Jul 22, 2007 11:14 am Post subject:

Probably. However, this is a different physical device than the regular Slingbox in that it has 4 seperate inputs on the back. Regular Slingbox users, with just the one input, would still benefit from a software upgrade because they could be using a video selector.
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Rob
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Please don't PM me with remote questions, post them in the forums so all the experts can help!

sfhub · Joined: 12 Oct 2003 Posts: 287