Adjust the detail, fix program bug

lua_modules/dht22/README.md

@@ -1,6 +1,8 @@
 # DHTxx module
 
 This module is compatible with DHT11, DHT21 and DHT22.  
+And is able to auto-select wheather you are using DHT11 or DHT2x
+
 No need to use a resistor to connect the pin data of DHT22 to ESP8266.
 
 ##Integer Verison[When using DHT11, Float version is useless...]
@@ -10,14 +12,13 @@ PIN = 4 --  data pin, GPIO2
 
 DHT= require("dht_lib")
 
---dht.read11(PIN)
-DHT.read22(PIN)
+DHT.read(PIN)
 
 t = DHT.getTemperature()
 h = DHT.getHumidity()
 
 if h == nil then
-  print("Error reading from DHT11/22")
+  print("Error reading from DHTxx")
 else
   -- temperature in degrees Celsius  and Farenheit
 
@@ -41,8 +42,7 @@ PIN = 4 --  data pin, GPIO2
 
 DHT= require("dht_lib")
 
---dht.read11(PIN)
-DHT.read22(PIN)
+DHT.read(PIN)
 
 t = DHT.getTemperature()
 h = DHT.getHumidity()
@@ -52,11 +52,12 @@ if h == nil then
 else
   -- temperature in degrees Celsius  and Farenheit
   -- floating point and integer version:
-  print("Temperature: "..t.." deg C")
+
+  print("Temperature: "..(t/10).." deg C")
   print("Temperature: "..(9 * t / 50 + 32).." deg F")
   
   -- humidity
-  print("Humidity: "..h.."%")
+  print("Humidity: "..(h/10).."%")
 end
 
 -- release module
@@ -64,12 +65,10 @@ DHT = nil
 package.loaded["dht_lib"]=nil
 ```
 ## Functions
-### read11
-read11(pin)  
-Read humidity and temperature from DHT11.
-###read22
-read22(pin)
-Read humidity and temperature from DHT22/21.
+
+###read
+read(pin)
+Read humidity and temperature from DHTxx(11,21,22...).
 **Parameters:**
 
 * pin - ESP8266 pin connect to data pin