Brad Midgley wrote: > Guys > > fwiw, it's only system audio that was half-duplex, and only on the > neo1973. the freerunner is supposed to have a nextgen codec without > the limitation. > > I believe everything is connected via pcm. It would be unusual to do > it with i2s. > > The main stumbling block for me was the fact that the alsa labels for > mixer controls did not match with the wolfson specs. It was too > confusing to figure out what switches to throw to get audio routed, so > I couldn't really debug the mixer settings that didn't work. That may > be different now. > > There is a plan b, to route audio through the cpu (hci routing). > That's how voice bluetooth audio works on desktop machines. This burns > the battery faster and introduces delay over pcm routing. Switching to > this mode requires a reset on the bt chip, so it's not convenient > enough to choose it on a per-connection basis. > > On Mon, Aug 11, 2008 at 10:41 PM, Rod Whitby <[EMAIL PROTECTED]> wrote: >> Jim Morris wrote: >>> Without full schematics showing how the BT chip is connected to the Codec, >>> and without the BT chips >>> docs, I cannot proceed. Depending on whether the BT chip puts out PCM or >>> I2S it may or may not work >>> according to Wolfson, unless external circuitry has been added. >> Does http://downloads.openmoko.org/schematics/GTA02/ help at all? >
Ok its starting to look good, I'll start working on it, I've done a lot of audio work on VOIP systems, so long as I have all the docs I need I should be able to figure it out. Thanks for the pointers, and sorry for the rant, I get frustrated with my FR on a daily basis ;) -- Jim Morris, http://blog.wolfman.com _______________________________________________ devel mailing list [email protected] https://lists.openmoko.org/mailman/listinfo/devel
