1234567891011121314151617181920212223242526 |
- -- encoder module is needed only for debug output; lines can be removed if no
- -- debug output is needed and/or encoder module is missing
- t = require("ds18b20")
- pin = 3 -- gpio0 = 3, gpio2 = 4
- function readout(temp)
- for addr, temp in pairs(temp) do
- -- print(string.format("Sensor %s: %s 'C", addr, temp))
- print(string.format("Sensor %s: %s °C", encoder.toHex(addr), temp)) -- readable address with base64 encoding is preferred when encoder module is available
- end
- -- Module can be released when it is no longer needed
- t = nil
- package.loaded["ds18b20"]=nil
- end
- -- t:readTemp(readout) -- default pin value is 3
- t:readTemp(readout, pin)
- if t.sens then
- print("Total number of DS18B20 sensors: "..table.getn(t.sens))
- for i, s in ipairs(t.sens) do
- -- print(string.format(" sensor #%d address: %s%s", i, s.addr, s.parasite == 1 and " (parasite)" or ""))
- print(string.format(" sensor #%d address: %s%s", i, encoder.toHex(s.addr), s.parasite == 1 and " (parasite)" or "")) -- readable address with base64 encoding is preferred when encoder module is available
- end
- end
|