Leaderboard

So my friend and I are trying to replace the front panel LEDs with RGB LEDs using a separate microcontroller. We were able to read the status from the current front panel so we can react to error codes properly, so it isn't just a "dumb" LED replacement with an external controller. Our next goal was to send commands over the SMBus to the Arduino (Nano, ATmega328P) we use to control the RGB LEDs. I customized the XBMC code to send data to the new address I defined for the Arduino, in our case we used 0xE9. Since the Wire library of the Arduino already shifts the bits, we set the Arduino's address to 0xE9 too. The thing is, the Xbox sends the signal, but the Arduino isn't reacting to the given address. We already tried to analyze the signal and we can confirm that there is data being sent through the SMBus. OFC we wired up SDA and SCL correctly, we checked twice and since the logic analyzer is able to sniff data, it should be correct. Has anyone ever tried this yet? I've seen a couple of threads talking about controlling Ambilight over the SMBus but it seems like nobody has tried it yet. I guess we are doing something wrong, but we haven't yet figured out what it is that we are missing. Next thing would be buying a proper logic analyzer, but maybe somebody here has some experience and could lead us in the right direction before we spend the money. Is there any more documentation on the SMBus of the Xbox out there? I've just found the documented stuff on the xboxdevwiki. Thanks in advance!

Yeah, but the LCD mod for the Aladdin only reads data from existing devices. My goal is to register a new slave on the SMBus so we can send data to it. Which in theory should work, but in reality it doesn't, at least not like we expected. We ordered a proper logic analyzer now and we'll debug again this weekend, maybe we can find out more. I guess the problem is that the hardware address we set on our Arduino is wrong and that the real address is shifted further than one bit like the xboxdev wiki says.