Learn easy methods to love and take care of your BeagleBone and train it tricks
About This Book
- Develop the sensible abilities which are required to create an embedded Linux procedure utilizing BeagleBone
- Use the embedded Linux software program to manage LEDs at the BeagleBone, empowering you to create LED flash patterns
- A hands-on advisor, supported by means of useful examples to combine BeagleBone into your projects
Who This e-book Is For
This ebook is for brand spanking new BeagleBone vendors who're trying to fast get their microboard up and operating. it might be worthy to appreciate embedded ideas or Linux yet nor is essential.
What you are going to Learn
- Unbox, energy up, and configure the BeagleBone with Linux
- Hook up and interface the BeagleBone to a desktop
- Develop software program to engage with the skin world
- Build and keep watch over LED flash patterns
- Run Linux-based software program at the BeagleBone
- Get accustomed to complete boot systems from energy directly to operating your personal software
- Expansion along with your personal cape/expansion board
- Expand the BeagleBone for Bluetooth connectivity
The BeagleBone is a microboard laptop that provides all of the probabilities of a bigger computing device in a miniaturized package deal. through studying embedded Linux for the BeagleBone, you will get begun at the street to using the facility of the board to accomplish its complete potential.
This e-book covers correct from unboxing, displaying you absolutely the fundamentals of utilizing your new BeagleBone to provide you the information you should be a dependable BeagleBone proprietor and to combine the microboard into your tasks. start by way of studying concerning the software program in the back of your buy ahead of relocating directly to your first uncomplicated undertaking on construction an LED flasher utilizing the LEDs at the BeagleBone itself.
Get to grips with connecting and controlling your BeagleBone from a cellular gadget, functional information on hooking up basic and toys in your BeagleBone, and troubleshooting tips about what to do whilst issues pass wrong.
Finally, study the complex issues corresponding to real-time programming with the BeagleBone to get its complete power and fasten it to growth forums. through the top of the ebook, you will understand every thing you must get out and play!
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Extra info for Learning BeagleBone
Those contain the facility administration controller and an I2C EEPROM. Electrically Erasable Programmable learn merely reminiscence (EEPROM) is one of those nonvolatile reminiscence frequently used to shop configuration or identity info. The PMIC generates the voltages utilized to the SoC and different bits of undefined. A mistake in programming this machine could cause everlasting harm to the BeagleBone. we are going to stay away from this machine in our routines. [ sixty eight ] Chapter four The I2C EEPROM at the BeagleBone is used to spot the board to the software program. This EEPROM will be written into yet there are lots of safeguards in position to avoid corruption of the contents. A corrupt EEPROM will be repaired with software program. this is often the gadget we'll use for our routines. workout 2 during this workout, we'll learn the id EEPROM at the BeagleBone and demonstrate it. From the previous workout, we all know that the EEPROM is on the deal with 0x50 at the bus zero. We additionally be aware of kernel motive force has claimed the machine. This was once visible after we ran i2cdetect at the bus zero and observed UU at the line classified 50 lower than the column categorised zero. there's a Linux kernel motive force for traditional I2C EEPROM units. during this workout, we are going to learn the I2C EEPROM utilizing the kernel motive force. The kernel driving force provides the EEPROM as a different dossier. as a way to learn the content material, we are going to have to use a brand new shell command, dd. The dd command is identical to the cat command brought formerly, and it'll let us specify parts of the dossier to learn. the choices to dd that we're drawn to are proven within the following desk: The dd parameter if=NAME which means bs=N This units the dimensions of chunks dd will learn at a time count=N This tells dd the variety of chunks to learn skip=N This tells dd the variety of chunks to bypass prior to analyzing This tells dd to learn from the dossier referred to as identify With those innovations, we will be able to learn purely the bytes within the EEPROM of curiosity. The BeagleBone EEPROM comprises binary information, and we have to be particular to prevent facing binary info that will no longer be printable. just like the LED precise records utilized in bankruptcy three, construction an LED Flasher, the EEPROM is gifted in one other distinctive dossier. For EEPROM, the dossier is at /sys/bus/i2c/ devices/0-0050/eeprom. The /sys/bus/i2c/devices listing comprises the entire recognized I2C units at the process. The 0-0050 parameter refers back to the bus zero and handle 0x50. The dossier eeprom is the way in which by which the kernel EEPROM driving force offers the knowledge. The EEPROM info structure is within the BeagleBone software program reference handbook to be had at http://www. beagleboard. org/Support/Hardware%20Support. [ sixty nine ] Refining the LED Flasher For our function, the eight bytes situated on the offset four from the start are of curiosity. This features a string that would establish the flavour of the BeagleBone. This string originated within the greater improvement forums for the SoC utilized in the BeagleBone. it really is utilized by the approach software program to spot the board style. placing all of it jointly, we get the subsequent command: $ dd if=/sys/bus/i2c/devices/0-0050/eeprom bs=1 skip=4 count=8 the subsequent desk explains everything of the previous command: The dd parameter if=/sys/bus/i2c/ devices/0-0050/eeprom bs=1 that means skip=4 This tells bypass to offset four; bypass takes the variety of blocks to bypass yet we've got set the block dimension to at least one byte, so we pass four bytes count=8 This reads eight bytes This tells dd the dossier to learn from This units the chew measurement into 1-byte chunks The output of the previous command is as follows: root@beaglebone:~# dd if=/sys/bus/i2c/devices/0-0050/eeprom bs=1 skip=4 count=8 A335BNLT8+0 documents in 8+0 documents out eight bytes (8 B) copied, zero.