David Smart / Mbed 2 deprecated WattEye

Watt Eye has a simple purpose - monitor pulses that comes from the home electric meter, measure the interval between the pulses and compute the real-time energy being consumed, broadcast that onto the network using UDP packets so that CouchCalendar has something to do and display, and publish the data to a web server, where it can be used (graphed or placed into a db).

Dependencies:   IniManager mbed HTTPClient SWUpdate StatisticQueue mbed-rtos NTPClient Watchdog SW_HTTPServer EthernetInterface TimeInterface

Features:

• Reads the time between pulses (which the home electric meter emits as IR for each Watt consumed).
• Once every 5 seconds, it broadcasts this via UDP to the network, so other nodes can listen to this real-time data.
• Once every 5 minutes, it posts statistics to a web server for logging.
• Once a day, it checks the web server to see if there is a SW update (and if so it downloads, installs, and activates it).
• It syncs to a configured NTP server, but doesn't actually use this information for anything.
• It hosts a web server, but this is not being used at this time.

So, this is a rather expensive piece of hardware to monitor a single pulse, and yet it is easy to imagine enhancing this:

• Read the water meter in a similar manner.
• Read the gas meter in a similar manner.

And even then, there will be many left-over port pins for other uses.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HardFaultHandlers.cpp	Sat Jul 26 19:51:33 2014 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+
+
+//            Reset_Handler
+//            NMI_Handler
+//            HardFault_Handler
+//            MemManage_Handler
+//            BusFault_Handler
+//            UsageFault_Handler
+extern "C" void HardFault_Handler()
+{
+    printf("Hard Fault!\r\n");
+    wait_ms(500);
+    NVIC_SystemReset();
+}
+extern "C" void NMI_Handler()
+{
+    printf("NMI Fault!\r\n");
+    wait_ms(500);
+    NVIC_SystemReset();
+}
+extern "C" void MemManage_Handler()
+{
+    printf("MemManage Fault!\r\n");
+    wait_ms(500);
+    NVIC_SystemReset();
+}
+extern "C" void BusFault_Handler()
+{
+    printf("BusFault Fault!\r\n");
+    wait_ms(500);
+    NVIC_SystemReset();
+}
+extern "C" void UsageFault_Handler()
+{
+    printf("UsageFault Fault!\r\n");
+    wait_ms(500);
+    NVIC_SystemReset();
+}