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by n_ary
2724 days ago
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Off-topic: How do you use React with an embedded project? Do you host the web-ui somewhere else and then use data sent from devices to chart results? (most embedded applications I saw were doing auto-adjustment & anykind of output means a tiny LCD display with numbers). Also, often when C/C++ comes up, more often it is embedded, but when I learned C/C++ it was mostly os/game/dbengine etc. Embedded sounds interesting but not sure where to start. A few pointers for beginner friendly resources would be appreciated!(will try to get my hands on the books mentioned) Also, do you think if I start now, Rust is better? |
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That is actually not hard to do on an embedded system. Getting the ETH or WiFi Driver to work is another story. That depends on the vendor and "how many/much batteries are included". Some will make it very easy and offer an fully working API that you can use. But sometimes you need to get deeper for custom solutions and that's when you need to read into the documentation and internal API.
I would start with an Arduino for basic stuff like turning on LEDs. Learn about the PIN Levels or the need of pull down / push up wiring. Try to implement software debounce for input reading. All that basic stuff. Programming is done via their IDE. You get an UART Console (serial) for debugging / logging. I use it to this day for prototyping (last week CAN bus for example to read the OBD interface of my car). There are LOT of resources online for the arduino.
When you re done with it you can look at raspberry pi. There you can use linux (which is very elegant) to do some advanced stuff like networking. You can start with monitoring temperature and printing to the console. There are lot of libraries and documentation for it.
If you are still interested you can go a level deeper. Without an OS or an RTOS (like FreeRTOS). There you are pretty much on your own with a lot of things. I started with an STM32F4. You have an integrated Display on some models. And there is also a lot of tutorials and documentation. The stmcube software helps you setup your pin and board configuration. If you use FreeRTOS: Try playing with tasks (context switching, priorities) or scheduler (cooperative vs preemptive). You can look at the examples provided in the repository (firmware packages) and run them on your board. Play with them, change or modify some parts.
About Rust I didn't try it. But currently i am not sure since the vendor of the board i am currently developing for provides only a API in C. You will either have to write in C or use C++ and write some sort of wrapper (https://www.oracle.com/technetwork/articles/servers-storage-...).