Download Learning Beaglebone by Hunyue Yau PDF

By Hunyue Yau

The BeagleBone is a microboard computing device that provides all of the probabilities of a bigger computing device in a miniaturized package deal. via studying embedded Linux for the BeagleBone, you may get began at the highway to using the ability of the board to accomplish its complete potential.

This ebook covers correct from unboxing, exhibiting you absolutely the fundamentals of utilizing your new BeagleBone to offer you the data you have to be a accountable BeagleBone proprietor and to combine the microboard into your initiatives. commence by means of studying in regards to the software program at the back of your buy earlier than relocating directly to your first easy undertaking on development an LED flasher utilizing the LEDs at the BeagleBone itself.

Get to grips with connecting and controlling your BeagleBone from a cellular machine, functional assistance on hooking up basic and toys on your BeagleBone, and troubleshooting tips about what to do while issues move wrong.

Finally, research the complex issues reminiscent of real-time programming with the BeagleBone to get its complete strength and attach it to enlargement forums. by way of the top of the publication, you'll understand every thing you must get out and play!

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Quick start with nano/pico A simple editor to start with is the nano/pico editor. sh and open it for editing if the file does not exist. If the file already exists, it will just open the file for editing. • Once in the editor, you can type normally. • To exit the editor, press Ctrl + X, that is, hold down the Ctrl key, and then press the X key. If the file has been modified, you will be prompted to save or discard the changes. More advanced topics such as search and replace are outside the scope of this book.

Sh As mentioned in the earlier section, the execute permission is needed for Linux to recognize things as a program. You can see that the file lacks this permission. Let's fix this. sh Here, we are being very generous with permissions. This is a first exercise and we do not want permissions to cause problems. To review, this command gives all the permissions to anyone (the owner, members of the group, and anyone else). The permissions we are giving are read, write, and execute. [ 50 ] Chapter 3 The absolute minimum permissions that are needed for a shell script to work are the read and execute permissions.

However, they are very useful in making the shell script easily readable. Blank lines can be used to separate logical blocks of code to provide a natural break to anyone reading it. • Line 4 is the heart of the program. In a shell script, the echo command prints all of its parameters. In this case, we are printing Hello, World. Now that we have a basic understanding of what this little program does, let's try to run it. sh: Permission denied. /, which explicitly instructs the kernel to run the program in the current directory.

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