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macOS & iOS Developer Playground
macOS - Development and Darwin
Mac Mini - Control Power LED
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<blockquote data-quote="gus" data-source="post: 102496"><p>Hi all.</p><p></p><p>I am hoping to be able to override the control of the Mac Mini Power LED from a userspace application (if necessary, I will consider kernel space). I am familiar with other hardware/OS's, and I think it is a long shot, but I was wondering whether someone here could confirm my suspicions.</p><p></p><p>Essentially, I want to flash the power LED when there is a Disc in the CDRom drive.</p><p></p><p>As I say, I know it is a long shot, but of anyone could point me to a reference on the subject, or to something confirming it can't be done, then I would appreciate it. My core suspicion is that the LED is tied directly into the power management chip, and can't be controlled from the OS. I have done some research, but I am unfamiliar with the Apple documentation layouts/structures, and my searches seem somewhat ineffective. The closest I have come to the subject is: </p><p></p><p><a href="http://developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_CPUs-G4/MacMiniG4/2Architecture/chapter_3_section_4.html#//apple_ref/doc/uid/TP40001865-CH206-TPXREF116" target="_blank">Long URL into Apple Developer connection</a> </p><p></p><p>Any references, pointers, opinions most welcome</p><p></p><p>Thanks in advance</p><p></p><p>gus</p></blockquote><p></p>
[QUOTE="gus, post: 102496"] Hi all. I am hoping to be able to override the control of the Mac Mini Power LED from a userspace application (if necessary, I will consider kernel space). I am familiar with other hardware/OS's, and I think it is a long shot, but I was wondering whether someone here could confirm my suspicions. Essentially, I want to flash the power LED when there is a Disc in the CDRom drive. As I say, I know it is a long shot, but of anyone could point me to a reference on the subject, or to something confirming it can't be done, then I would appreciate it. My core suspicion is that the LED is tied directly into the power management chip, and can't be controlled from the OS. I have done some research, but I am unfamiliar with the Apple documentation layouts/structures, and my searches seem somewhat ineffective. The closest I have come to the subject is: [URL=http://developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_CPUs-G4/MacMiniG4/2Architecture/chapter_3_section_4.html#//apple_ref/doc/uid/TP40001865-CH206-TPXREF116]Long URL into Apple Developer connection[/URL] Any references, pointers, opinions most welcome Thanks in advance gus [/QUOTE]
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macOS - Development and Darwin
Mac Mini - Control Power LED
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