28 lines
602 B
Lua
28 lines
602 B
Lua
t = require("ds18b20")
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-- ESP-01 GPIO Mapping
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gpio0 = 3
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gpio2 = 4
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t.setup(gpio0)
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addrs = t.addrs()
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if (addrs ~= nil) then
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print("Total DS18B20 sensors: "..table.getn(addrs))
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end
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-- Just read temperature
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print("Temperature: "..t.read().."'C")
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-- Get temperature of first detected sensor in Fahrenheit
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print("Temperature: "..t.read(nil,t.F).."'F")
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-- Query the second detected sensor, get temperature in Kelvin
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if (table.getn(addrs) >= 2) then
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print("Second sensor: "..t.read(addrs[2],t.K).."'K")
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end
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-- Don't forget to release it after use
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t = nil
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ds18b20 = nil
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package.loaded["ds18b20"]=nil
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