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

1. cd install_files
2. GOOS=linux GOARCH=arm GOARM=6 go build github.com/oandrew/ipod/cmd/ipod
3. add dtoverlay=dwc2 to the end of /boot/config.txt to enable USB gadget mode
4. compile the kernel modules (ipod-gadget directory) and put the .ko files in install_files
5. copy the pipod directory to the Pi
6. run sudo ./install.sh
7. enable auto login so that Pulseaudio can start automatically
8. 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.
9. Pair and trust your bluetooth device
10. 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