I tried ThinkSpeak functionality to the WiFi sample program. It is proven with ODIN-W2.

Dependencies:   LM75B

Fork of mbed-os-example-mbed5-wifi by mbed-os-examples

Revision:
9:04967f59c620
Parent:
8:72d49a084297
--- a/README.md	Thu Dec 22 10:14:52 2016 +0000
+++ b/README.md	Thu Dec 22 10:20:32 2016 +0000
@@ -1,6 +1,6 @@
 # mbed-os-example-wifi #
 
-WiFi example for mbed OS with ThinSpeak
+WiFi example for mbed OS with ThingSpeak
 
 ## Getting started with the WiFi API ##
 
@@ -44,7 +44,12 @@
           "wifi-password": {
               "help": "WiFi Password",
               "value": "\"Password\""
-          }
+          },
+          "thingspeak_key": {
+              "help": "Thing Speak Key",
+              "value": "\"XXXXXXXXXXXXXXXX\""
+        }  
+          
       },
   ```