Diff: Outputs/OutputEmonCms.cpp

Revision:

4:d460406ac780

Child:

5:0dbc27a7af55

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Outputs/OutputEmonCms.cpp	Tue May 01 21:43:40 2012 +0000
@@ -0,0 +1,106 @@
+/** IoT Gateway Output definition for Open Energy Monitor emonCms 
+ *
+ * @author Andrew Lindsay
+ *
+ * @section LICENSE
+ *
+ * Copyright (c) 2012 Andrew Lindsay (andrew [at] thiseldo [dot] co [dot] uk)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ * 
+ * @section DESCRIPTION
+ * 
+ * API URL: http://host/emoncms/api/post?apikey=key&json={power:252.4}
+ ,temperature:15.4}
+ * 
+ */
+
+#include "mbed.h"
+#include "OutputEmonCms.h"
+
+DigitalOut emonActivityLED(p29, "activityLED");
+
+// Constructor
+OutputEmonCms::OutputEmonCms() {
+    sendCount = 0;
+}
+
+/** Alternative Constructor
+  */
+OutputEmonCms::OutputEmonCms( char *internalBufferStart, char *url, char *key ) {
+    sendCount = 0;
+    dataBuffer = internalBufferStart;
+    apiUrl = url;
+    apiKey = key;
+    // Setup start of URL buffer
+    init();
+}
+
+
+void OutputEmonCms::init( ) {
+    dbufPtr = dataBuffer;
+    sprintf(dataBuffer, apiUrl, apiKey );
+    dbufPtr = dataBuffer + strlen(dataBuffer);
+    *dbufPtr = '\0';
+    hasData = false;
+}
+
+// Datafeed us the name of the value
+void OutputEmonCms::addReading(char *dataFeed, char *dataStream, char *reading ) {
+
+    snprintf(dbufPtr, DATABUF_SIZE, "{%s:%s}\0", dataFeed, reading);
+    hasData = true;
+    send();
+}
+
+
+int OutputEmonCms::send( void ) {
+//    char urlBuf[64];
+    HTTPClient http;
+
+    if ( hasData && strlen( dataBuffer ) > 1 ) {
+
+        HTTPText csvContent("application/json");
+        csvContent.set(std::string(dataBuffer));
+
+        // uri for post includes feed ID and datastream ID
+        printf("URL: %s\n",dataBuffer);
+
+
+        emonActivityLED = 1;
+        // result should be 0 and response should be 200 for successful post
+        printf("EmonCms send count %d\n", ++sendCount);
+/*
+        printf("\nHEAP STATS\n");
+        __heapstats((__heapprt)fprintf,stderr);
+        printf("\nHEAP CHECK\n");
+        __heapvalid((__heapprt)fprintf,stderr, 0);
+        printf("\nStackP: %ld\n",__current_sp());
+        printf("---------------\n");
+*/
+        HTTPResult result = http.get(dataBuffer, NULL);
+        int response = http.getHTTPResponseCode();
+        printf("updateDataStream(%d)\n", response );
+        emonActivityLED = 0;
+    }
+
+    init();
+    return 0;
+}
+