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rainbow1.lua
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rainbow1.lua
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-- Id : Rainbow
-- Date : 2016-02-08
-- File : rainbow1.lua
-- Firmware: nodemcu_float_0.9.6-dev_20150704
-- Created : Claus Kuehnel
LED_PIN = 8 -- 2 -- GPIO2
FILENAME = "rainbow.dat"
loadfile(FILENAME)
i = 0
function readTables(fname)
print("\nRainbowTables reading from "..FILENAME)
f = file.open(fname, "r")
-- io.input(file)
line = file.readline() pts = tonumber(line) print("Data points = ", pts)
green = {}
for i = 1, pts do line = file.readline() green[i] = tonumber(line) end
-- for i, v in ipairs(green) do print(i, v) end
red = {}
for i = 1, pts do line = file.readline() red[i] = tonumber(line) end
-- for i, v in ipairs(red) do print(i, v) end
blue = {}
for i = 1, pts do line = file.readline() blue[i] = tonumber(line) end
-- for i, v in ipairs(blue) do print(i, v) end
file.close(f)
end
function show()
i = (i % table.getn(green))+1
print(i, red[i], green[i], blue[i])
COLOR = string.char(red[i], green[i], blue[i])
ws2812.write(LED_PIN, COLOR)
end
readTables(FILENAME)
tmr.alarm(0, 100, 1, function() show() end )
print("One WS2812 connected to Pin2 will changes its color repeatedly")
print("Stop this by tmr.stop(0)")
show()