--- a/rust/src/config.rs	Thu Jan 05 23:26:00 2017 +0800
+++ b/rust/src/config.rs	Fri Jan 06 22:04:10 2017 +0800
@@ -1,44 +1,41 @@
 extern crate toml;
 
-use toml::{Encoder,Decoder};
-use serde::Serializer;
 use serde::Serialize;
 
-#[derive(Deserialize,Serialize,Debug)]
+#[derive(Deserialize,Serialize,Debug,Clone)]
 #[allow(non_snake_case)]
 pub struct Config {
-    FRIDGE_SLEEP: u32,
-    SENSOR_SLEEP: u32,
-    UPLOAD_SLEEP: u32,
+    pub FRIDGE_SLEEP: u64,
+    pub SENSOR_SLEEP: u64,
+    pub UPLOAD_SLEEP: u64,
 
-    FRIDGE_DELAY: u32,
-    FRIDGE_WORT_INVALID_TIME: u32,
+    pub FRIDGE_DELAY: u64,
+    pub FRIDGE_WORT_INVALID_TIME: u64,
 
-    MAX_READINGS: u32,
+    pub MAX_READINGS: u32,
 
-    PARAMS_FILE: String,
+    pub PARAMS_FILE: String,
 
-    SENSOR_BASE_DIR: String,
-    FRIDGE_GPIO_PIN: u32,
+    pub SENSOR_BASE_DIR: String,
+    pub FRIDGE_GPIO_PIN: u32,
 
-    AMBIENT_NAME: String,
-    FRIDGE_NAME: String,
-    WORT_NAME: String,
-    INTERNAL_TEMPERATURE: String,
+    pub AMBIENT_NAME: String,
+    pub FRIDGE_NAME: String,
+    pub WORT_NAME: String,
+    pub INTERNAL_TEMPERATURE: String,
 
-    HMAC_KEY: String,
-    SERVER_URL: String,
-    UPDATE_URL: String, 
-    SETTINGS_URL: String,
+    pub HMAC_KEY: String,
+    pub SERVER_URL: String,
+    pub UPDATE_URL: String, 
+    pub SETTINGS_URL: String,
 }
 
 impl Config {
 
     pub fn new() -> Self {
         Config {
-            FRIDGE_SLEEP: 60, // this value works. may affect the algorithm
-            SENSOR_SLEEP: 15, // same for this.
-            UPLOAD_SLEEP: 83, // nice and prime
+            SENSOR_SLEEP: 5,
+            UPLOAD_SLEEP: 83,
 
             FRIDGE_DELAY: 600, // 10 mins, to avoid fridge damage from frequent cycling off/on
             FRIDGE_WORT_INVALID_TIME: 300, // 5 mins
@@ -66,7 +63,7 @@
         }
     }
 
-    pub fn to_toml_string(self) -> String {
+    pub fn to_toml_string(&self) -> String {
         let mut e = toml::Encoder::new();
         self.serialize(&mut e).unwrap();
         toml::Value::Table(e.toml).to_string()