WIP. send a large constant string twice a second, in order to test out the transport with something indicative of our required load.

Dependencies:   FXOS8700CQ NTPClient azure_umqtt_c iothub_mqtt_transport mbed-rtos mbed wolfSSL Socket lwip-eth lwip-sys lwip

Fork of FXOS8700CQ_To_Azure_IoT by Mark Radbourne

Revision:
3:c0556ff7b8e3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EthernetInterface/lwip-sys.lib	Thu Dec 08 00:11:40 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/lwip-sys/#8b8671ab556f