iPodLinux

Hi,

I know this is an old issue, but was curious to know if anyone has newish information about getting serial to work on an ipod mini (in my case, second generation). I'm assuming it's still not working, as i get IO errors trying to set the baud rate on /dev/tts/0 using stty.

If the answer is basically "it's the same as it was a year ago", I'm more than willing to put in work to get this going, and am comfortable working in the Linux kernel. I would appreciate though some pointers (especially from people who worked on getting previous hardware to work; how you tracked down registers & the like to get the Portal Player chips going).

From the serial driver code, it looks like someone had this device in mind (there's a reference to hardware version 0x7).

The main reason I really want to get this working is for using pdPod as an embedded audio processor for art/design physical computing projects... but need more complex inputs than the scroll wheel / buttons provide, including responding to analog controls.

Thanks!

-Tymm


P.S. I'm happy to move this discussion to the kernel forum if it makes more sense there.

As an update: by changing the values in include/asm/arch/serial.h to the PP5020 values I'm able to get TX working fine -- it looks like someone has already spent time getting this stuff to work.

RX however gets a ton of NULs in addition to the expected characters (and continuing long after transmissions have stopped). I'm not sure if it's an IRQ issue, or something where the RX line isn't configured right. I'm pulled towards it being the former... however I would expect the NULs to continue indefinitely if it were say an IRQ not getting ACKed, but it does stop after 20-30 seconds.

Looks very very promising, but still would love help if anyone has a clue...

Thanks,

-Tymm

Oh; as a sidenote: the 2G minis have two serial ports; ttyS1 is on the bottom connector, ttyS0 is on the top. both have the same issues.

The more experienced kernel developers tend to avoid the forums and use IRC instead. You may have to wait a while for a response.

Gotcha; thanks.