Apple Desktop Bus (ADB) Analyzer

This analyzer decodes Apple Desktop Bus traffic.

It may be connected directly to the ADB pin of any Apple Desktop Bus network.

It will decode the command and data transactions on the bus.

Attention / sync or start bits will be marked with a green blob. Stop bits will be marked with a red square. Service requests during stop bits will be marked with an upward arrow.

An example capture may be generated to demo the behaviors described above.

Getting Started

MacOS

Dependencies:

• XCode with command line tools
• CMake 3.13+

Installing command line tools after XCode is installed:

xcode-select --install

Then open XCode, open Preferences from the main menu, go to locations, and select the only option under 'Command line tools'.

Installing CMake on MacOS:

1. Download the binary distribution for MacOS, cmake-*-Darwin-x86_64.dmg
2. Install the usual way by dragging into applications.
3. Open a terminal and run the following:

/Applications/CMake.app/Contents/bin/cmake-gui --install

Note: Errors may occur if older versions of CMake are installed.

Building the analyzer:

mkdir build
cd build
cmake ..
cmake --build .

Ubuntu 16.04

Dependencies:

• CMake 3.13+
• gcc 4.8+

Misc dependencies:

sudo apt-get install build-essential

Building the analyzer:

mkdir build
cd build
cmake ..
cmake --build .

Windows

Dependencies:

• Visual Studio 2015 Update 3
• CMake 3.13+

Visual Studio 2015

Note - newer versions of Visual Studio should be fine.

Setup options:

• Programming Languages > Visual C++ > select all sub-components.

Note - if CMake has any problems with the MSVC compiler, it's likely a component is missing.

CMake

Download and install the latest CMake release here. https://cmake.org/download/

Building the analyzer:

mkdir build
cd build -A x64
cmake ..

Then, open the newly created solution file located here: build\adb_analyzer.sln

Output Frame Format

Frame Type: "data"

Property	Type	Description
addr	int	Address of device issued by host
cmd	string	Command code issued by host
reg	int	Register index issues by host
data	bytes	Data transferred to/from device register depending on command
svrreq	bool	Service request placed in either command or data stop bit

This is the decoded ADB command and data frames.