blinkled.xlua

--[[

This Lua script creates a new blinking LED timer coroutine each time it runs.
Click the refresh button to create a new.

The timer object is free-floating since we are not referencing
(anchoring) the object. The created timer(s) will eventually be
collected by the Lua garbage collector.

Online timer example with documentation: https://tutorial.realtimelogic.com/Lua-Coroutines.lsp
Scroll down to Creating a Timer in Coroutine Mode

Timer documentation:
https://realtimelogic.com/ba/doc/?url=lua.html#ba_timer

The example uses GPIO #4. Connect an LED between GPIO 4 and ground.
--]]

local function blink()
    local pin = esp32.gpio(4,"OUT")
   while true do
      trace"blink"
      pin:value(true)
      coroutine.yield(true) -- Sleep
      pin:value(false)
      coroutine.yield(true) -- Sleep
   end
end
ba.timer(blink):set(1000)