Refreshed the demo app to (re)use a token list initialized in setup. …

…This better reflects an optimal usage on Arduino and AVR processors.

README.md

@@ -8,6 +8,9 @@ Cobbled together by Laurence A. Lee (rubyjedi@gmail.com) from the following orig
 
 **This library is intended to be a lightweight alternative to [AJSON](https://github.com/interactive-matter/aJson.git), specifically for memory-constrained products like the [DigiSpark](http://digistump.com/product.php?id=1) that run on the ATTINY85 processor.**
 
+**Then again, I'd highly recommend using a larger Arduino-like platform than a DigiSpark or ATTINY85. (My personal favorite is the Teensy 3.x in [pjrc's Teensy Family](https://www.pjrc.com/teensy/) ). Declaring static strings as I have done in the below Usage Example will quickly eat your RAM.**
+
+
 ## Limitations ##
 **NESTED STRUCTURES NOT SUPPORTED (YET)**
 
@@ -19,13 +22,13 @@ If you feel the need to fork and enhance, I would suggest putting such enhanceme
 
 ## Usage Example ##
 ``` java
-
 // NOTE1: As the Caller, you are responsible for the memory management (calling create_token_list() and release_token_list())
 // of the Hashmap used to maintain the Key/Value pairs.
 // NOTE2: The Key/Value strings in the HashMap reference strings as tokenized within the original JSON String.
+// NOTE3: Arduino and AVR chips in general aren't nice about malloc/free, so this demo was refactored declare and reuse the Token List.
+// Previous versions of this example would create and release the token list, which "works", but isn't ideal.
 
 #include <json_arduino.h>
-
 char json_string[256];
 char* command;
 int toggle;
@@ -34,38 +37,35 @@ token_list_t *token_list = NULL;
 
 void setup() {
   Serial.begin(115200);
+  delay(1000);
+  token_list = create_token_list(25); // Create the Token List with enough space for 12 key/value pairs - 12 * 2 [key/value items] + 1 token for whole JSON Object.
 }
 
 void loop() {
-
-  if (toggle>0){
-    strcpy(json_string, "{command:hello, to:world}");
+  if (toggle==0){
+    strcpy(json_string, "{command:hello, to:\"What a Wonderful World\"}");
   } else {
     // Demonstrates quotation-marks around tokens are handled by Jsmn OK.
-    strcpy(json_string, "{\"command\":\"goodbye\", \"say_to\":\"World\"}"); 
+    strcpy(json_string, "{\"command\":\"goodbye\", \"say_to\":\"Incredibly Cruel World\"}"); 
   }
 
-  token_list = create_token_list(25); // Create the Token List.
   json_to_token_list(json_string, token_list); // Convert JSON String to a Hashmap of Key/Value Pairs
 
-  command = json_get_value(token_list, "command");
+  command = json_get_value(token_list, (char *)"command");
   if (strcmp(command,"hello")==0){
     // do something for the Hello Command ...
     Serial.print("Hello, ");
-    Serial.println( json_get_value(token_list,"to") );
+    Serial.println( json_get_value(token_list, (char *)"to") );
   } else if (strcmp(command,"goodbye")==0) {
     // do something for the Goodbye Command ...
-    Serial.print("Goodbye, Cruel ");
-    Serial.println( json_get_value(token_list,"say_to") );
+    Serial.print("Goodbye, You ");
+    Serial.println( json_get_value(token_list, (char *)"say_to") );
   } else {
     Serial.println("** BONK **");
   } 
 
-  release_token_list(token_list); // Release or Wipe the Token List, else memory-leak at your own peril.
-
-  toggle = (++toggle % 2); // Weenie way to do "Odd or Even".
-  delay(25); // Give the loop some time to breathe.
-
-}
+  (++toggle %= 2); // Weenie way to do "Odd or Even".
+  delay(250); // Give the loop some time to breathe.
 
+}
 ```