"... and no one shall work for money, and no one shall work for fame; But each for the joy of the working, and each, in his separate star, shall draw the thing as he sees it, for the god of things as they are"
Notes on the Beaglebone Black
While working on the Beagle and BBCSIO projects
I gathered a variety of information on various useful Beaglebone Black concepts and implementation details. These techniques which, although interesting,
were really not suitable for inclusion in either project. However, since I had to figure them out, I thought I might as well write them down in the form of web pages or technical notes
in order to collect the information together and save someone else the trouble of doing all the digging around.
Hence this page - it provides links to a variety of various Beaglebone Black topics and will hopefully make such information more readily findable via Internet searches.
Beaglebone Black Notes
- The Linux Device Tree can appear to be very complex and hard to understand. This technical note attempts to provide an explanation set at the novice level of how the Device Tree
works, why it does what it does and how to compile and de-compile it.
- The default installation of Linux on the Beaglebone Black is designed to be able to use an USB cable to connect to a PC. This page is a step-by-step
guide on how to
configure a Windows PC so that the Beaglebone Black can connect to the Internet through it. Also provided is a discussion of how to connect to the
Beaglebone Black via SSH (PuTTY) and
some background information on using the LXDE terminal progam.
- One of the most useful things you can do is set up your Beaglebone Black so that it boots off of an SD card. As this page explains, it is quite a straight
forward process to create a backup copy of your Beaglebone Black configuration if it is located on an SD card.
- The Beaglebone Black contains many more devices (SPI, I2C, USB, UART, PWM &etc.) than are possible to support using the available
physical pads on the bottom of the CPU chip. This
conflict is resolved by making multiple devices share a CPU pad and the component that controls which device has access is called the PinMux. This page
is a discussion of the PinMux and it also provides a listing of the PinMux modes which affect the Beaglebone Black P8 and P9 headers.
- The Programmable Real Time Units (PRUs) on the Beaglebone Black are capable of very fast and Input and Output via certain pins
on the P8 and P9 Headers. This page provides useful background information and a discussion of how to configure those pins so the PRU's can access them.
- A one page printable pdf summary of the usage of the various PinMux settings related to the Beaglebone Black P8 header.
- A one page printable pdf summary of the usage of the various PinMux settings related to the Beaglebone Black P9 header.
- A one page printable pdf summary of all possible PRU Inputs and their relationship to the Beaglebone Black P8 and P9 header pins.
- A one page printable pdf summary of all possible PRU Outputs and their relationship to the Beaglebone Black P8 and P9 header pins.
The contents of this web page are provided "as is" without any warranty of any kind and without any claim to accuracy. Please be aware that the information provided
may be out-of-date, incomplete, erroneous or simply unsuitable for your purposes. Any use you make of the information is entirely at your
discretion and any consequences of that use are entirely your responsibility.
All source code is provided under the terms of the MIT License.