Beagle Music
You'll need a little troubleshooting and some basic knowledge of HDMI if you plan to use your BeagleBone Black for multimedia applications.
HDMI and the BeagleBone Black Multimedia Environment
Lead Image © ittichai anusarn, 123RF.com
The BeagleBone Black is a powerful, low-cost, and flexible platform suitable for a wide range of applications, but users who wish to set up the BeagleBone Black as a PC-style multimedia system – or even just configure ordinary audio and video – often experience difficulties. Understanding these problems and how to fix them requires a deep look at how BeagleBone uses the High-Definition Multi Media Interface (HDMI) standard. This article takes a look at the evolution of HDMI support in BeagleBone and how to configure the BeagleBone Black for audio output and set up the correct video resolution.
A Little History
The original BeagleBone board has no on-board hardware to convert digital multimedia signals into an analog form. The board has no connectors to physically connect a video display or a set of audio speakers. BeagleBone users who needed audio and video output capabilities turned to audio/video expansion "cape" boards attached to the P8/P9 connectors of the BeagleBone. (See the box titled "What Is a Cape?")
An add-on cape board can provide the hardware necessary to perform the digital-to-analog conversion of multimedia signals and the physical connectors for displays and speakers to interface with the system. This approach is effective, but it adds the expense of the multimedia cape board to the overall cost of the BeagleBone. Attaching an add-on cape board also reduces the number of applications that the BeagleBone is suitable for, because it uses pins on the P8/P9 connectors that would otherwise be available for other purposes.
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