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Checked in mail on the Apple protocol/remote as contributed.
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bengtmartensson committed Dec 10, 2023
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299 changes: 299 additions & 0 deletions ...pple remote protocol? - Bengt Martensson <[email protected]> - 2023-09-26 1638.eml
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Content-Type: multipart/alternative;
boundary="------------UWj2Jc2pgX8j2jp7B00El0Gk"
Message-ID: <[email protected]>
Date: Tue, 26 Sep 2023 16:38:31 +0200
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
Thunderbird/102.13.0
Subject: Re: Have you seen this wikipedia page on the apple remote protocol?
Content-Language: en-US
To: Lyndel McGee <[email protected]>
References: <[email protected]>
<[email protected]>
<[email protected]>
From: Bengt Martensson <[email protected]>
In-Reply-To: <[email protected]>

This is a multi-part message in MIME format.
--------------UWj2Jc2pgX8j2jp7B00El0Gk
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Hi Lyndel,
thank you for your mails. No, I was not aware of the Wiki article. I
have now scrutinized it:
The only significant difference is that D/Command page is 5 (8) bits,
and S/Vendor is 11 (8) bits, always constant.
The article does not contain any useful reference for the protocol
statements, which is strictly speaking a violation of WP:NOR
https://en.wikipedia.org/wiki/Wikipedia:No_original_research . (It
contains a number of junk references, though...) The closest there is is
a link to a defunct Arduino program, which I happened to find as
https://github.com/squeed/AppleRemoteSender.
For this reason, I see no compelling reason to consider the Wiki version
as more correct than the present.
I am willing to copy your file to the contributed directory. I will give
you credit for it, unless you ask me not to.
Please let me know what you think.
Bengt
On 9/25/23 05:48, Lyndel McGee wrote:
> Here's a text file with an IRP xml snippet if you'd like to include this.
>
> On Sunday, September 24, 2023 at 10:17:12 PM CDT, Lyndel McGee
> <[email protected]> wrote:
>
>
> Bengt,  I hope you are doing well.
>
> Have you seen this page?  I found this page this weekend and was
> floored as I know I've looked for this before.
>
> https://en.m.wikipedia.org/wiki/Apple_Remote
>
> Based on what I read and the stuff below, We got the bits right but
> some other stuff wrong.
>
> Your thoughts appreciated.
> Lyndel
>
> P.S. I'm curious to know what the IRP might look like reformatted.
>
>
> Consider this apple code Scrutinizer currently supports.
>
> Screenshot_B 238_050 (Device 238 Subdevice 135 function 50 pair ID 254)
>
> 0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0041 0016 0041
> 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041
> 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016
> 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016
> 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041
> 0016 051E 015B 0057 0016 0E6C
>
> When you break it down looking for the 0x43F, from wikipedia you can
> see how it changed.
> 0000 006C 0022 0002
> 015B 00AD
> 0016 0016 0016 0041 0016 0041 0016 0041
> 0016 0016 (command page 0x0E)
> 0016 0041 0016 0041 0016 0041 0016 0041
> 0016 0041 0016 0041 0016 0016 0016 0016
> 0016 0016 0016 0016 0016 0041 (signature - 0x43F bits in reverse)
> 0016 0041 (checksum - 1)
> 0016 0016 0016 0041 0016 0016 0016 0016
> 0016 0041 0016 0041 0016 0016  (function 0x32 - 50)
> 0016 0016 0016 0041 0016 0041 0016 0041
> 0016 0041 0016 0041 0016 0041 0016 0041 (pair id - 0xFE - 254)
> 0016 051E
> 015B 0057 0016 0E6C
>
> We have:
> 5 bits command page - 0x0E
> 11 bits 0x43F
> 1 bit checksum (1)
> 7 bit function (50)
> 8 bit device Id (what we call pairId - 0xFE - 254)
>
--------------UWj2Jc2pgX8j2jp7B00El0Gk
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 8bit

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<div class="moz-cite-prefix">Hi Lyndel,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">thank you for your mails. No, I was not
aware of the Wiki article. I have now scrutinized it:</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">The only significant difference is that
D/Command page is 5 (8) bits, and S/Vendor is 11 (8) bits, always
constant. <br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">The article does not contain any useful
reference for the protocol statements, which is strictly speaking
a violation of WP:NOR
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Wikipedia:No_original_research">https://en.wikipedia.org/wiki/Wikipedia:No_original_research</a> . (It
contains a number of junk references, though...) The closest there
is is a link to a defunct Arduino program, which I happened to
find as <a class="moz-txt-link-freetext" href="https://github.com/squeed/AppleRemoteSender">https://github.com/squeed/AppleRemoteSender</a>. <br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">For this reason, I see no compelling
reason to consider the Wiki version as more correct than the
present.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">I am willing to copy your file to the
contributed directory. I will give you credit for it, unless you
ask me not to.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Please let me know what you think.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Bengt <br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 9/25/23 05:48, Lyndel McGee wrote:<br>
</div>
<blockquote type="cite"
cite="mid:[email protected]">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div> Here's a text file with an IRP xml snippet if you'd like to
include this.<br>
<br>
</div>
<div class="yahoo_quoted" style="margin:10px 0px 0px
0.8ex;border-left:1px solid #ccc;padding-left:1ex;">
<div style="font-family:'Helvetica Neue', Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;">
<div> On Sunday, September 24, 2023 at 10:17:12 PM CDT, Lyndel
McGee <a class="moz-txt-link-rfc2396E" href="mailto:[email protected]">&lt;[email protected]&gt;</a> wrote: </div>
<div><br clear="none">
</div>
<div><br clear="none">
</div>
<div>
<div dir="ltr">Bengt,  I hope you are doing well.<br
clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">Have you seen this page?  I found this page
this weekend and was floored as I know I've looked for
this before.<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr"><a rel="nofollow noopener noreferrer"
shape="rect" target="_blank"
href="https://en.m.wikipedia.org/wiki/Apple_Remote"
moz-do-not-send="true" class="moz-txt-link-freetext">https://en.m.wikipedia.org/wiki/Apple_Remote</a><br
clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">Based on what I read and the stuff below, We
got the bits right but some other stuff wrong.<br
clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">Your thoughts appreciated.  <br clear="none">
</div>
<div dir="ltr">Lyndel<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">P.S. I'm curious to know what the IRP might
look like reformatted.<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">Consider this apple code Scrutinizer
currently supports.<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">Screenshot_B 238_050 (Device 238 Subdevice
135 function 50 pair ID 254)<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">0000 006C 0022 0002 015B 00AD 0016 0016 0016
0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041
0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016
0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016
0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016
0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041
0016 0041 0016 0041 0016 0041 0016 051E 015B 0057 0016
0E6C<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">When you break it down looking for the 0x43F,
from wikipedia you can see how it changed.<br clear="none">
</div>
<div dir="ltr">0000 006C 0022 0002 <br clear="none">
</div>
<div dir="ltr">015B 00AD <br clear="none">
</div>
<div dir="ltr">0016 0016 0016 0041 0016 0041 0016 0041<br
clear="none">
</div>
<div dir="ltr">0016 0016 (command page 0x0E)<br clear="none">
</div>
<div dir="ltr">0016 0041 0016 0041 0016 0041 0016 0041<br
clear="none">
</div>
<div dir="ltr">0016 0041 0016 0041 0016 0016 0016 0016 <br
clear="none">
</div>
<div dir="ltr">0016 0016 0016 0016 0016 0041 (signature -
0x43F bits in reverse)<br clear="none">
</div>
<div dir="ltr">0016 0041 (checksum - 1)<br clear="none">
</div>
<div dir="ltr">0016 0016 0016 0041 0016 0016 0016 0016<br
clear="none">
</div>
<div dir="ltr">0016 0041 0016 0041 0016 0016  (function 0x32
- 50)<br clear="none">
</div>
<div dir="ltr">0016 0016 0016 0041 0016 0041 0016 0041 <br
clear="none">
</div>
<div dir="ltr">0016 0041 0016 0041 0016 0041 0016 0041 (pair
id - 0xFE - 254)<br clear="none">
</div>
<div dir="ltr">0016 051E <br clear="none">
</div>
<div dir="ltr">015B 0057 0016 0E6C<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">We have:<br clear="none">
</div>
<div dir="ltr">5 bits command page - 0x0E<br clear="none">
</div>
<div dir="ltr">11 bits 0x43F<br clear="none">
</div>
<div dir="ltr">1 bit checksum (1)<br clear="none">
</div>
<div dir="ltr">7 bit function (50)<br clear="none">
</div>
<div dir="ltr">8 bit device Id (what we call pairId - 0xFE -
254)<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
</div>
</div>
</div>
</blockquote>
<p><br>
</p>
</body>
</html>

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