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| 1 | +<html> |
| 2 | + <head> |
| 3 | + </head> |
| 4 | + <body> |
| 5 | + <h1>Log to file</h1> |
| 6 | + <p>This page connects to an Espruino device, calls a |
| 7 | + function called <code>getData()</code> (which you should |
| 8 | + have created previously) and then stored all data received |
| 9 | + in the text box below. You can click 'Save Data' to save it |
| 10 | + to a file. |
| 11 | + </p> |
| 12 | + <button id="connect">Connect</button> |
| 13 | + Status: <span id="status"></span><br/> |
| 14 | + <span>Received data:</span><br/> |
| 15 | + <textarea id="result" style="width:100%;height:150px"> |
| 16 | + </textarea> |
| 17 | + <button id="save">Save Data</button> |
| 18 | + |
| 19 | + <script src="../uart.js"></script> |
| 20 | + <script type="text/javascript"> |
| 21 | + var resultData = ""; |
| 22 | + var domResult = document.getElementById('result'); |
| 23 | + var domStatus = document.getElementById('status'); |
| 24 | + function setStatus(t) { |
| 25 | + domStatus.innerHTML = t; |
| 26 | + } |
| 27 | + |
| 28 | + // When clicked, connect or disconnect |
| 29 | + var connection; |
| 30 | + document.getElementById('connect').addEventListener("click", function() { |
| 31 | + if (connection) { |
| 32 | + connection.close(); |
| 33 | + connection = undefined; |
| 34 | + } |
| 35 | + setStatus("Connecting..."); |
| 36 | + UART.connect(function(c) { |
| 37 | + if (!c) { |
| 38 | + setStatus("Couldn't connect!"); |
| 39 | + alert("Couldn't connect!"); |
| 40 | + return; |
| 41 | + } |
| 42 | + setStatus("Connected"); |
| 43 | + connection = c; |
| 44 | + // Handle the data we get back, and call 'onLine' |
| 45 | + // whenever we get a line |
| 46 | + resultData = ""; |
| 47 | + connection.on("data", function(d) { |
| 48 | + resultData += d; |
| 49 | + setStatus(resultData.length+" bytes received"); |
| 50 | + result.value = resultData; |
| 51 | + }); |
| 52 | + // First, tell the device |
| 53 | + connection.write("\x03\x10getData();\n", function() { |
| 54 | + setStatus("getData() sent."); |
| 55 | + }); |
| 56 | + }); |
| 57 | + }); |
| 58 | + document.getElementById('save').addEventListener("click", function() { |
| 59 | + var a = document.createElement("a"), |
| 60 | + file = new Blob([resultData], {type: "text/plain"}); |
| 61 | + var url = URL.createObjectURL(file); |
| 62 | + a.href = url; |
| 63 | + a.download = "data.txt"; |
| 64 | + document.body.appendChild(a); |
| 65 | + a.click(); |
| 66 | + setTimeout(function() { |
| 67 | + document.body.removeChild(a); |
| 68 | + window.URL.revokeObjectURL(url); |
| 69 | + }, 0); |
| 70 | + }); |
| 71 | + </script> |
| 72 | + </body> |
| 73 | +</html> |
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