Andy A / Mbed 2 deprecated Plotly_HelloWorld

Simple demo for plotly library

Dependencies:   EthernetInterface mbed-rtos mbed plotly

A basic example of streaming data to a chart on plot.ly

Assumes a wired ethernet connection with direct internet access and a DHCP server.

Chart URL and status is output via the usb serial port at 115200.

You will need to modify the plot.ly account information at the start of main.cpp to match your account on http://plot.ly

Files at this revision

API Documentation at this revision

Revision 1:5e7145bb2184, committed 2014-07-29

Comitter:
AndyA
Date:
Tue Jul 29 13:55:43 2014 +0000
Parent:
0:c7329ea5d8d5
Commit message:
Updated to show demonstrate multi-line chart support

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file
plotly.lib Show annotated file Show diff for this revision Revisions of this file 
diff -r c7329ea5d8d5 -r 5e7145bb2184 main.cpp
--- a/main.cpp	Fri Jul 11 10:11:00 2014 +0000
+++ b/main.cpp	Tue Jul 29 13:55:43 2014 +0000
@@ -8,30 +8,35 @@
 EthernetInterface eth;
 
 // plotly account details
-char PlotlyUsername[] =  "YoutUsername";
-char PlotlyAPIToken[] = "YourAPIKey";
-char streaming_token[] = "YourStreamToken";
-char fileName[] = "Mbed Test Chart";
+const int numberOfTraces = 3;
+const char PlotlyUsername[] =  "YoutUsername";
+const char PlotlyAPIToken[] = "YourAPIKey";
+const char *PlotlyStreamingTokens[numberOfTraces] = {"YourStreamToken","YourSecondStreamToken"}; // or {"YourStreamToken"} for a single line. Must match numberOfTraces
+const char PlotlyFileName[] = "Mbed Test Chart";
 
-plotly graph = plotly(PlotlyUsername, PlotlyAPIToken, streaming_token, fileName);
+plotly graph = plotly(PlotlyUsername,PlotlyAPIToken, PlotlyStreamingTokens, PlotlyFileName, numberOfTraces);
 
 void plotSetup()
 {
-    graph.log_level = 2; // turn on status output
+    graph.log_level = 1; // turn on status output
     graph.maxpoints = 72;
     if (graph.init()) {
-        graph.openStream();
+        graph.openStreams();
     }
 
 }
 
-// Generate a sample chart
+// Generate some simple sample data points
 void plotGenerateDataPoint()
 {
-    static  int counter = 0;
-    float yValue = sin(counter*3.14159/180);
-    graph.plot(counter, yValue);
-    counter+=5;
+    static float counter = 0;
+    
+    // generate a series of sine waves with slightly different frequencies.
+    for (int i = 0; i < numberOfTraces; i++) {
+      graph.plot(counter, (float)sin(counter * (1-i*0.1)), i); 
+    }
+    
+    counter+=0.2;
 }
 
 
@@ -57,7 +62,7 @@
             plotGenerateDataPoint();
             wait(0.5);
             }
-        graph.closeStream();
+        graph.closeStreams();
 
     } else
         pc.printf("No IP Address\n");

diff -r c7329ea5d8d5 -r 5e7145bb2184 plotly.lib
--- a/plotly.lib	Fri Jul 11 10:11:00 2014 +0000
+++ b/plotly.lib	Tue Jul 29 13:55:43 2014 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/AndyA/code/plotly/#33006c37c633
+http://mbed.org/users/AndyA/code/plotly/#d4f705ba2ea5