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| 1 | +--- |
| 2 | +title: "BBB Advanced Learning Path" |
| 3 | +source: "https://chatgpt.com/c/67f10249-c2a4-8012-8b02-73910880f26c" |
| 4 | +author: |
| 5 | + - "[[ChatGPT]]" |
| 6 | +published: |
| 7 | +created: 2025-04-05 |
| 8 | +description: "ChatGPT conversation with 2 turns" |
| 9 | +tags: |
| 10 | + - "clippings" |
| 11 | +--- |
| 12 | +## You |
| 13 | + |
| 14 | +say I read Derek moloy exploring beaglebone what is next? I want to know everything about BBB and continue |
| 15 | + |
| 16 | +--- |
| 17 | + |
| 18 | +## ChatGPT |
| 19 | + |
| 20 | +Nice! If you’ve read *Exploring BeagleBone* by Derek Molloy, then you've already got a **solid foundation** — that book covers a ton: Linux, GPIOs, PRUs, device trees, and even some kernel work. |
| 21 | + |
| 22 | +If you want to go *next level* and aim to **know everything** about the BeagleBone Black (BBB), here’s a roadmap you can follow depending on what you want to specialize in: |
| 23 | + |
| 24 | +--- |
| 25 | + |
| 26 | +## 🔧 1. Deep Dive into the Kernel & Device Drivers |
| 27 | + |
| 28 | +You already know basic kernel modules from Moloy's book. Now it’s time to go deeper. |
| 29 | + |
| 30 | +- **Goal:** Write custom kernel modules and device drivers for your hardware. |
| 31 | +- **Learn:** |
| 32 | + - Platform devices & platform drivers |
| 33 | + - Writing character & block device drivers |
| 34 | + - Integrating with `/dev`, sysfs, and procfs |
| 35 | + - Asynchronous I/O, poll/select |
| 36 | +- **Resources:** |
| 37 | + - *Linux Device Drivers* by Jonathan Corbet (Free online) |
| 38 | + - LWN.net articles on driver development |
| 39 | + - Your own drivers using BeagleBone's I2C/SPI/GPIO |
| 40 | + |
| 41 | +--- |
| 42 | + |
| 43 | +## 🛠️ 2. Create a Custom Linux Distribution with Yocto |
| 44 | + |
| 45 | +This is powerful if you want full control over the BBB system. |
| 46 | + |
| 47 | +- **Goal:** Build minimal images with only what you need. |
| 48 | +- **Learn:** |
| 49 | + - Yocto layers (meta-\*, recipes, machine configuration) |
| 50 | + - How to write a `bbappend` and patch recipes |
| 51 | + - How to write a new recipe for your kernel or app |
| 52 | + - Add your own overlays or device tree files |
| 53 | +- **Bonus:** Cross-compile kernel from upstream for BBB and integrate with Yocto (you're already working on this, right? 😉) |
| 54 | + |
| 55 | +--- |
| 56 | + |
| 57 | +## 🧠 3. Understand the PRU Subsystem |
| 58 | + |
| 59 | +The Programmable Real-time Units are one of BBB’s secret weapons. |
| 60 | + |
| 61 | +- **Goal:** Use the PRU to do real-time tasks like fast GPIO toggling, or communicate with fast peripherals. |
| 62 | +- **Learn:** |
| 63 | + - How to write PRU code in C or Assembly |
| 64 | + - How to communicate between PRU and ARM core |
| 65 | + - How to use RPMsg, remoteproc, UIO |
| 66 | +- **Resources:** |
| 67 | + - TI’s PRU Software Support Package |
| 68 | + - Derek Molloy's PRU chapter (again), then go deeper with TI docs |
| 69 | + |
| 70 | +--- |
| 71 | + |
| 72 | +## 📡 4. Explore Networking, IoT, and Remote Access |
| 73 | + |
| 74 | +- Build systems that communicate over MQTT, HTTP, WebSocket |
| 75 | +- Expose GPIOs or sensors via REST API |
| 76 | +- Create a web dashboard to control the BBB |
| 77 | + |
| 78 | +--- |
| 79 | + |
| 80 | +## ⚙️ 5. Real Hardware Projects |
| 81 | + |
| 82 | +Use what you know to build real things. Some ideas: |
| 83 | + |
| 84 | +- Custom cape with I2C/SPI peripherals → write the driver |
| 85 | +- BBB as a home automation hub → control relays, get sensor data |
| 86 | +- BBB as a logic analyzer or oscilloscope via PRUs |
| 87 | +- BBB controlling motors with real-time feedback |
| 88 | + |
| 89 | +--- |
| 90 | + |
| 91 | +## 💡 6. Contribute to Open Source |
| 92 | + |
| 93 | +Find BBB-related projects on GitHub or BeagleBoard.org and start contributing. |
| 94 | + |
| 95 | +--- |
| 96 | + |
| 97 | +Would you like me to help you create a **detailed study/project plan** tailored to what you want to build or focus on (e.g., device drivers, embedded Linux, IoT, PRUs)? Just tell me what excites you the most about BBB. |
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