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

main.cpp@1:5e7145bb2184, 2014-07-29 (annotated)

Committer:
AndyA
Date:
Tue Jul 29 13:55:43 2014 +0000
Revision:
1:5e7145bb2184
Parent:
0:c7329ea5d8d5 
Updated to show demonstrate multi-line chart support

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AndyA 0:c7329ea5d8d5 1
AndyA 0:c7329ea5d8d5 2 #include "mbed.h"
AndyA 0:c7329ea5d8d5 3 #include "EthernetInterface.h"
AndyA 0:c7329ea5d8d5 4 #include "plotly.h"
AndyA 0:c7329ea5d8d5 5
AndyA 0:c7329ea5d8d5 6 Serial pc(USBTX,USBRX);
AndyA 0:c7329ea5d8d5 7
AndyA 0:c7329ea5d8d5 8 EthernetInterface eth;
AndyA 0:c7329ea5d8d5 9
AndyA 0:c7329ea5d8d5 10 // plotly account details
AndyA 1:5e7145bb2184 11 const int numberOfTraces = 3;
AndyA 1:5e7145bb2184 12 const char PlotlyUsername[] = "YoutUsername";
AndyA 1:5e7145bb2184 13 const char PlotlyAPIToken[] = "YourAPIKey";
AndyA 1:5e7145bb2184 14 const char *PlotlyStreamingTokens[numberOfTraces] = {"YourStreamToken","YourSecondStreamToken"}; // or {"YourStreamToken"} for a single line. Must match numberOfTraces
AndyA 1:5e7145bb2184 15 const char PlotlyFileName[] = "Mbed Test Chart";
AndyA 0:c7329ea5d8d5 16
AndyA 1:5e7145bb2184 17 plotly graph = plotly(PlotlyUsername,PlotlyAPIToken, PlotlyStreamingTokens, PlotlyFileName, numberOfTraces);
AndyA 0:c7329ea5d8d5 18
AndyA 0:c7329ea5d8d5 19 void plotSetup()
AndyA 0:c7329ea5d8d5 20 {
AndyA 1:5e7145bb2184 21 graph.log_level = 1; // turn on status output
AndyA 0:c7329ea5d8d5 22 graph.maxpoints = 72;
AndyA 0:c7329ea5d8d5 23 if (graph.init()) {
AndyA 1:5e7145bb2184 24 graph.openStreams();
AndyA 0:c7329ea5d8d5 25 }
AndyA 0:c7329ea5d8d5 26
AndyA 0:c7329ea5d8d5 27 }
AndyA 0:c7329ea5d8d5 28
AndyA 1:5e7145bb2184 29 // Generate some simple sample data points
AndyA 0:c7329ea5d8d5 30 void plotGenerateDataPoint()
AndyA 0:c7329ea5d8d5 31 {
AndyA 1:5e7145bb2184 32 static float counter = 0;
AndyA 1:5e7145bb2184 33
AndyA 1:5e7145bb2184 34 // generate a series of sine waves with slightly different frequencies.
AndyA 1:5e7145bb2184 35 for (int i = 0; i < numberOfTraces; i++) {
AndyA 1:5e7145bb2184 36 graph.plot(counter, (float)sin(counter * (1-i*0.1)), i);
AndyA 1:5e7145bb2184 37 }
AndyA 1:5e7145bb2184 38
AndyA 1:5e7145bb2184 39 counter+=0.2;
AndyA 0:c7329ea5d8d5 40 }
AndyA 0:c7329ea5d8d5 41
AndyA 0:c7329ea5d8d5 42
AndyA 0:c7329ea5d8d5 43 int main()
AndyA 0:c7329ea5d8d5 44 {
AndyA 0:c7329ea5d8d5 45 pc.baud(115200);
AndyA 0:c7329ea5d8d5 46
AndyA 0:c7329ea5d8d5 47 pc.printf("Connecting network...\n");
AndyA 0:c7329ea5d8d5 48
AndyA 0:c7329ea5d8d5 49 eth.init();
AndyA 0:c7329ea5d8d5 50 eth.connect();
AndyA 0:c7329ea5d8d5 51
AndyA 0:c7329ea5d8d5 52 char *ipAddress = eth.getIPAddress();
AndyA 0:c7329ea5d8d5 53 if (ipAddress && (strlen(ipAddress) > 4)) {
AndyA 0:c7329ea5d8d5 54
AndyA 0:c7329ea5d8d5 55 pc.printf("IP Address is %s\n",eth.getIPAddress());
AndyA 0:c7329ea5d8d5 56 pc.printf("Initalise plot..\n");
AndyA 0:c7329ea5d8d5 57
AndyA 0:c7329ea5d8d5 58 plotSetup();
AndyA 0:c7329ea5d8d5 59
AndyA 0:c7329ea5d8d5 60 pc.printf("Generating data, press any key to abort.\n");
AndyA 0:c7329ea5d8d5 61 while (!pc.readable()) {
AndyA 0:c7329ea5d8d5 62 plotGenerateDataPoint();
AndyA 0:c7329ea5d8d5 63 wait(0.5);
AndyA 0:c7329ea5d8d5 64 }
AndyA 1:5e7145bb2184 65 graph.closeStreams();
AndyA 0:c7329ea5d8d5 66
AndyA 0:c7329ea5d8d5 67 } else
AndyA 0:c7329ea5d8d5 68 pc.printf("No IP Address\n");
AndyA 0:c7329ea5d8d5 69
AndyA 0:c7329ea5d8d5 70 eth.disconnect();
AndyA 0:c7329ea5d8d5 71
AndyA 0:c7329ea5d8d5 72 pc.printf("Done\n");
AndyA 0:c7329ea5d8d5 73
AndyA 0:c7329ea5d8d5 74 while (1) {
AndyA 0:c7329ea5d8d5 75 wait(10);
AndyA 0:c7329ea5d8d5 76 }
AndyA 0:c7329ea5d8d5 77 }