PiPod

A bunch of scripts and configs that allows streaming audio via bluetooth to a fake ipod device.

Useful if your car only supports Apple devices for some reason (why Fiat and Alfa, why).

Tested on:

Raspberry Pi Zero W (Raspbian Stretch Lite 2018-11-13)

Assumptions

You have a device (e.g. a car) that supports playing music from an iPhone/iPod etc. over USB. You want to play music from something else (e.g. an Android phone) over bluetooth.
OS: Raspbian Stretch Lite

Build and Install

cd install_files
GOOS=linux GOARCH=arm GOARM=6 go build github.com/oandrew/ipod/cmd/ipod
add dtoverlay=dwc2 to the end of /boot/config.txt to enable USB gadget mode
compile the kernel modules (ipod-gadget directory) and put the .ko files in install_files
copy the pipod directory to the Pi
run sudo ./install.sh
enable auto login so that Pulseaudio can start automatically
edit the file a2dp-autoconnect. Replace the NAME variable with your bluetooth device's MAC address. Also make sure that if you run pactl list sources short, the value of $PA_SINK shows up in the output.
Pair and trust your bluetooth device
Reboot, connect everything (USB to car; manually connect phone via bluetooth) and test!

TODO:

Figure out how to get the Pi to automatically connect to the bluetooth device (currently you have to manually connect from the device)
Use DKMS to auto-build and install kernel modules
Investigate Pulseaudio 11 which can maybe bypass resampling