Rockbox

Here is an (very, very) early proof of concept Lua viewer plugin.

Currently only a few functions are exported from the plugin API and it also lacks a setjmp/longjmp implementation for actual targets so error handling will go wrong very quickly.

However it does work so far for simple scripts like the following:

function sayhello(seconds)
message = string.format("Hello from LUA for %d seconds", 5)
rb.splash(seconds, message)
end

-- Drawn an X on the screen
rb.clear()
rb.drawline(0, 0, rb.LCD_WIDTH, rb.LCD_HEIGHT)
rb.drawline(rb.LCD_WIDTH, 0, 0, rb.LCD_HEIGHT)
rb.update()

seconds = 5

rb.sleep(5 * rb.HZ)

sayhello(seconds)