Rob Dobson
Monitor for central heating system (e.g. 2zones+hw) Supports up to 15 temp probes (DS18B20/DS18S20) 3 valve monitors Gas pulse meter recording Use stand-alone or with nodeEnergyServer See http://robdobson.com/2015/09/central-heating-monitor
Dependencies: EthernetInterfacePlusHostname NTPClient Onewire RdWebServer SDFileSystem-RTOS mbed-rtos mbed-src
Revision 0:f6611c8f453c, committed 2014-11-07
- Comitter:
- Bobty
- Date:
- Fri Nov 07 14:15:21 2014 +0000
- Child:
- 1:518f39df3485
- Commit message:
- First working version - doesn't handle ethernet unplugging
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetInterface.lib Fri Nov 07 14:15:21 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/EthernetInterface/#9b2d10dc0392
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Nov 07 14:15:21 2014 +0000
@@ -0,0 +1,82 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+DigitalIn gpPin(p21);
+DigitalOut led(LED1);
+
+const int BROADCAST_PORT = 42853; // Arbitrarily chosen port number
+const int NUM_GASPULSE_VALS_IN_PACKET = 10;
+Serial pc(USBTX, USBRX);
+
+int main()
+{
+ pc.baud(115200);
+ printf("Gas Monitor - Rob Dobson 2014\n");
+
+ EthernetInterface eth;
+ eth.init(); //Use DHCP
+ UDPSocket sendSocket;
+ Endpoint broadcast;
+
+ // Connection establishment/re-establishment
+ Timer connectRetryTimer;
+ connectRetryTimer.start();
+ bool isConnected = false;
+
+ // Gas Meter Pulse sample timer
+ Timer gasPulseTimer;
+ gasPulseTimer.start();
+ int gasPulseCount = 0;
+ bool gasPulseVals[NUM_GASPULSE_VALS_IN_PACKET];
+
+ // Forever
+ while (true)
+ {
+ // Check if already connected to ethernet
+ if (!isConnected)
+ {
+ if (connectRetryTimer.read_ms() > 1000)
+ {
+ isConnected = eth.connect() == 0;
+ connectRetryTimer.reset();
+ if (isConnected)
+ {
+ printf("Eth Connected - IP Address is %s - MAC is %s\n", eth.getIPAddress(), eth.getMACAddress());
+ sendSocket.init();
+ sendSocket.set_broadcasting();
+ broadcast.set_address("255.255.255.255", BROADCAST_PORT);
+ }
+ else
+ {
+ printf("Eth Connect Attempt Failed\n");
+ }
+ }
+ }
+ else
+ {
+ if (gasPulseTimer.read_ms() > 1000)
+ {
+ gasPulseTimer.reset();
+
+ // Read from Gas Pulse pin
+ gasPulseVals[gasPulseCount++] = gpPin;
+ led = gpPin;
+ if (gasPulseCount >= NUM_GASPULSE_VALS_IN_PACKET)
+ {
+ gasPulseCount = 0;
+
+ // Send the packet
+ char outBuf[] = "{\"gaspulseval\":[0,0,0,0,0,0,0,0,0,0]}\n";
+ char* pOutBuf = strchr(outBuf, '[') + 1;
+ for (int i = 0; i < NUM_GASPULSE_VALS_IN_PACKET; i++)
+ {
+ *pOutBuf = gasPulseVals[i] ? '1' : '0';
+ pOutBuf+=2;
+ }
+ sendSocket.sendTo(broadcast, outBuf, sizeof(outBuf)-2);
+ printf("Sending %s", outBuf);
+ }
+ }
+ }
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Fri Nov 07 14:15:21 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#db1fc233faa9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Nov 07 14:15:21 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/7e6c9f46b3bd \ No newline at end of file