Ok I’ll try to break down the various options I tried.
I’ve tried a variety of installation options on both Jessie (full) and Stretch (Lite). I would try Jessie Lite if I could find one online, but the Raspberry Pi group only seems to archive full versions of Jessie on their servers.
I’ve tried the following
-1. Start with fresh install of Jessie Full, then install the pHAT DAC using the one line install for the pHAT DAC specifically (not the airdac). This works for playing local files through the aplay command. However this also breaks the bluetooth software I was trying to use because it comments out
/boot/config.txt. When that is commented out,
aplay -l returns what I would expect in that there is only one audio sink, numbered 0, and that sink is the pHAT DAC. However, in order to try to get the bluetooth software working, I uncommented
aplay -l returns two options. Sink 0 is now the on board audio sink for the rpi zero (can’t remember it specifically, bcm something or other) and now, instead of sink 0, the pHAT DAC is sink 1. Despite this, aplay will still play local wav files out of the pHAT DAC when it is sink 0 or sink 1 by default. The bluetooth software I was using only supports having one sink, and that sink is by default set to 0. I tried setting the bluetooth software, through alsa’s mixer settings, to work with sink 1, but anything I changed not only did not work, but broke aplay’s ability to play local audio files out of the pHAT DAC. So that was a bust. Next, I tried reordering the sinks to make the pHAT DAC be sink 0 rather than sink 1 by creating a file called alsa.conf in
/etc/modprobe.d. This successfully re-ordered the devices, however upon reboot it broke both the output to the pHAT DAC through using aplay to play local files, as well as did not make my bluetooth program work.
-2: I then wanted to try to find a separate software I could use to stream audio to my pi so that I could see if I could get around why this other bluetooth software wasn’t working. In comes airdac. I started with a fresh Debian Stretch Lite install as recommended on the airdac page, and executed the one line installer for airdac, selecting option 2 at the end of the install to also setup the pHAT DAC. This installer did not work at all. It did disable the default audio out, but did not seem to install what the pHAT DAC needed to be working properly. aplay -l returned that no audio sources were connected even though the pHAT DAC was connected.
-3: I repeated everything in step 2 but on a fresh Debian Jessie install instead, again selecting option 2 at the end of the install to setup the pHAT DAC. This also did not work, and aplay -l again returned that no audio sources were connected even though the pHAT DAC was connected.
-4 (I’m about to try this, flashing the sd card now). I’m going to start with a fresh version of Debian Jessie, and first install the pHAT DAC software directly (not the airdac). Then, I will install the airdac software, but instead of selecting option 2, I will select option 0 to avoid any changes to the audio setup. I anticipate that this will prevent some configuration file from being changed by the installer that managed to break the pHAT DAC from working. I will report back with what I find. If this works, it will be a great first start but I ultimately want something that can work without wifi.
Ultimately I would still like to use this other (or any really) bluetooth software rather than airplay. If you have a recommended software that you know works with the pHAT DAC, I’m all ears! Ideally I want software that after it’s initially installed is no additional command line work, and all pairing is done automatically through some sort of daemon. What I was trying to use before was the following:
I’m looking to stream audio from some other device (like a phone or computer) to the pi and then have the pi play the audio out of the pHAT DAC. I’d like it to work on any device without having to install an additional app on my device (the non-pi device, that is).
Hopefully this is some more information for you! Sorry that was very rambly.