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Booting the BeagleBone Black (BBB): A Beginner's Guide
A plain-English walkthrough of the BeagleBone Black's 4-stage boot process â from the built-in ROM bootloader all the way to Linux taking over.
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Flashing the BeagleBone Black: One .img.xz File, eMMC vs SD Card Boot
You don't need separate BOOT and ROOTFS files for the BeagleBone Black â the official BeagleBoard.org image already has both. Here's how to flash it, boot from eMMC vs SD, and SSH in for the first time.
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Why Your BeagleBone Black Won't Boot: The FAT + EXT4 SD Card Setup You're Missing
Most beginners skip this step and wonder why their BeagleBone Black won't boot. Here's why you need TWO SD card partitions (FAT for boot, EXT4 for root) and how to set them up in an Ubuntu VM.
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Cross-Compiling for the BeagleBone Black with Eclipse CDT and the GNU ARM Toolchain
Setting up Eclipse CDT, the GNU ARM toolchain, and the Remote System Explorer plugin to cross-compile C/C++ and deploy straight to a BeagleBone Black.
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BeagleBone Black GPIO Deep Dive: Pin Muxing, Register Decoding, and Reading Real Pin Values
A hands-on walkthrough of GPIO on the BeagleBone Black's AM3358 â pin muxing, register decoding, and reading real pin values from the Linux command line.
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Mapping BeagleBone Black Header Pins to GPIO Lines with gpioinfo and Pinmux Debugfs
A hands-on walkthrough of debugging BeagleBone Black GPIO pins using gpioinfo and the AM335x pinmux debugfs interface.
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Reading GPIO Pin Configuration on the BeagleBone Black via pinctrl debugfs
How to read live AM335x pinmux register values straight from the Linux kernel's debugfs interface to debug a misbehaving BeagleBone Black GPIO pin.
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Eclipse (Windows) â Remote GDB Debug on a Linux Target â Setting Up Live Debugging on the BeagleBone Black
How to wire up Eclipse on Windows, a cross-compiled ARM gdb, and gdbserver on a BeagleBone Black so you can set breakpoints and inspect variables while your code runs live on the target.
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Toggling a BeagleBone Black USER LED On/Off â From Datasheet Pin Number to echo Command
How to translate a BeagleBone Black USER LED's datasheet pin nickname into the Linux GPIO number, then toggle it through both the raw sysfs GPIO interface and the friendlier LED class interface.
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Blinking a BeagleBone Black LED from C â trigger, brightness, and a Simple On/Off Loop
How to write a small C program that takes manual control of a BeagleBone Black USER LED through /sys/class/leds and blinks it on a 2-second loop using trigger, brightness, rewind, and fflush.
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Driving All 4 BeagleBone Black LEDs from C â From Four Repeated Blocks to One Clean Array + Loop
Refactoring a single-LED sysfs blink program on the BeagleBone Black into a path array, a setup loop, and an array of FILE* handles â a C/C++ embedded systems example built and cross-compiled in Eclipse CDT, the smallest useful pattern for driving N identical sysfs devices from C.
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UDP Networking in C â socket(), sendto(), recvfrom(), and a Working Echo Server on the BeagleBone Black
Building a UDP echo server and client in C with socket(), bind(), sendto(), and recvfrom() on the BeagleBone Black â the smallest working example of the Berkeley sockets API, and what actually happens (and doesn't) when a UDP packet leaves the kernel.
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Broadcasting UDP Across the LAN â SO_BROADCAST and Proving It on a Second PC (BeagleBone Black)
Enabling SO_BROADCAST on a BeagleBone Black UDP socket to reach an entire LAN subnet, then proving delivery with a Wireshark capture on a separate Windows PC.
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From Strings to Structs: Sending Real Data Over UDP, Then Triggering Linux From Windows (BeagleBone Black)
Sending a C struct instead of a raw string over UDP, then triggering an independent loop on a BeagleBone Black with a single one-shot Winsock2 packet from a Windows PC.
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Turning a UDP Command Into a Real Action: On/Off From Windows Toggles a BeagleBone Black LED (BeagleBone Black)
Moving recvfrom() inside the loop and adding a strcmp() dispatcher so a UDP command from Windows actually turns a BeagleBone Black LED on and off instead of just printing to the screen.
Read More →The Complete BeagleBone Black GPIO Pinout Table: Every P8/P9 Pin Mapped to Bank, Offset, and Linux GPIO Number
A comprehensive, one-page reference table mapping every P8 and P9 header pin on the BeagleBone Black to its GPIO bank/offset, Linux GPIO number, and default alternate function.
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