DS18B20 module examples

Adding couple of example on how to use DS18B20 module
2015-01-10 10:58:08 +01:00 · 2015-01-10 10:58:08 +01:00 · 6525747859
parent a0f5559a86
commit 6525747859
2 changed files with 46 additions and 0 deletions
--- a/lua_modules/ds18b20/ds18b20-example.lua
+++ b/lua_modules/ds18b20/ds18b20-example.lua
@ -0,0 +1,19 @@
+t = require("ds18b20")
+
+-- ESP-01 GPIO Mapping
+gpio0 = 3
+gpio2 = 4
+
+t.setup(gpio0)
+addrs = t.addrs()
+if (addrs ~= nil) then
+  print("Total DS18B20 sensors: "..table.getn(addrs))
+end
+
+-- Just read temperature
+print("Temperature: "..t.read().."'C")
+
+-- Don't forget to release it after use
+t = nil
+ds18b20 = nil
+package.loaded["ds18b20"]=nil
--- a/lua_modules/ds18b20/ds18b20-web.lua
+++ b/lua_modules/ds18b20/ds18b20-web.lua
@ -0,0 +1,27 @@
+require('ds18b20')
+
+port = 80
+
+-- ESP-01 GPIO Mapping
+gpio0, gpio2 = 3, 4
+
+ds18b20.setup(gpio0)
+
+srv=net.createServer(net.TCP)
+srv:listen(port,
+     function(conn)
+          conn:send("HTTP/1.1 200 OK\nContent-Type: text/html\nRefresh: 5\n\n" ..
+              "<!DOCTYPE HTML>" ..
+              "<html><body>" ..
+              "<b>ESP8266</b></br>" ..
+              "Temperature : " .. ds18b20.read() .. "<br>" ..
+              "Node ChipID : " .. node.chipid() .. "<br>" ..
+              "Node MAC : " .. wifi.sta.getmac() .. "<br>" ..
+              "Node Heap : " .. node.heap() .. "<br>" ..
+              "Timer Ticks : " .. tmr.now() .. "<br>" ..
+              "</html></body>")          
+          conn:on("sent",function(conn) conn:close() end)
+     end
+)
+
+