32 lines
1.5 KiB
Markdown
32 lines
1.5 KiB
Markdown
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# LuPI2
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Second attempt at Lua based operating system, primarily aimed at RaspberryPi, but with ambition to support other boards as well. The main motivation is
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fact that GNU/Linux + python solution isn't allays the best for people that haven't been programming ever, and Lua in one of the simplest, most
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intuitive languages. It has only 6 types, very simple syntax, yet supports many advanced mechanisms.
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Idea
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-----
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Design of system APIs is heavily influenced by [OpenComputers](https://github.com/MightyPirates/OpenComputers) minecraft mod. Some Lua code parts are
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actually copied from there(all of the code is under the MIT License). Main advantage of the API is that it's event/component based, which provides great
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level of abstraction. Custom components can be created and used with very little effort, being event-based simplifies code further, providing one unified
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queue for events instead of multiple ways of handling them.
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```lua
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local component = require("component")
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--Create virtual LED component using built-in GPIO component
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local led = {}
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led.toggle = function() component.gpio.togglePin(27) end
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component.register(nil, "LED", led)
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--Blink the LED
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while true do
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os.sleep(1)
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component.led.toggle()
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end
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```
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Implementation
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-----
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On the low-level side LuPI will run on very stripped-down version of Linux kernel as init, it will be the only binary executable in system. Kernel will
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only provide hardware drivers and abstract some of the things. Entire userspace is meant to be done using Lua. Security isn't the primary goal but still
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needs to be considered.
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