semi working logging, missing poll rate

tabs/logging.css

@@ -25,6 +25,23 @@
             line-height: 20px;
             color: silver;
         }
+    .tab-logging .info {
+        margin-top: 10px;
+    }
+        .tab-logging .info dt {
+            float: left;
+            width: 120px;
+            height: 20px;
+            line-height: 20px;
+
+            font-weight: bold;
+        }
+        .tab-logging .info dd {
+            display: block;
+            margin-left: 130px;
+            height: 20px;
+            line-height: 20px;
+        }
     .tab-logging .buttons {
         margin-top: 10px;
     }

tabs/logging.html

@@ -1,13 +1,23 @@
 <div class="tab-logging">
     <div class="note">
-        Data will be logged in this tab <span style="color: red">only</span>, leaving this tab will <span style="color: red">cancel</span> logging and application will return to its normal <strong>"configurator"</strong> operation.<br />
-        You are free to select the global update period, data will be written into the log file every <strong>1</strong> second.
+        Data will be logged in this tab <span style="color: red">only</span>, leaving the tab will <span style="color: red">cancel</span>
+        logging and application will return to its normal <strong>"configurator"</strong> state.<br />
+        You are free to select the global update period, data will be written into the log file every <strong>1</strong> second for performance reasons.
     </div>
     <div class="properties">
         <dl>
             <dt><label><input type="checkbox" name="MSP_RAW_IMU" /> MSP_RAW_IMU</label></dt><dd>9 columns (accel[x, y, z], gyro[x, y, z], mag[x, y, z])</dd>
             <dt><label><input type="checkbox" name="MSP_ATTITUDE" /> MSP_ATTITUDE</label></dt><dd>3 columns (x, y, z)</dd>
             <dt><label><input type="checkbox" name="MSP_ALTITUDE" /> MSP_ALTITUDE</label></dt><dd>one column</dd>
+            <dt><label><input type="checkbox" name="MSP_RC" /> MSP_RC</label></dt><dd>8 columns by default</dd>
+            <dt><label><input type="checkbox" name="MSP_MOTOR" /> MSP_MOTOR</label></dt><dd>8 columns by default</dd>
+            <dt><label><input type="checkbox" name="MSP_DEBUG" /> MSP_DEBUG</label></dt><dd>4 columns</dd>
+        </dl>
+    </div>
+    <div class="info">
+        <dl>
+            <dt>Samples Saved:</dt><dd class="samples">0</dd>
+            <dt>Log Size:</dt><dd class="size">0 kB</dd>
         </dl>
     </div>
     <div class="buttons">

tabs/logging.js

@@ -2,6 +2,8 @@ function tab_initialize_logging() {
     ga_tracker.sendAppView('Logging');
     GUI.active_tab = 'logging';
 
+    var requested_properties = [];
+
     $('#content').load("./tabs/logging.html", process_html);
 
     function process_html() {
@@ -13,15 +15,106 @@ function tab_initialize_logging() {
 
         $('a.logging').click(function() {
             if (fileEntry.isFile) {
-                // TODO:
-                // grab enabled properties
-                // grab refresh rate
-                // start data polling timer
-                // start buffer flushing sequence & timer (keep fileWriter.readyState in mind)
+                var clicks = $(this).data('clicks');
+
+                if (!clicks) {
+                    // reset some variables before start
+                    samples = 0;
+                    log_buffer = [];
+                    requested_properties = [];
+
+                    $('.properties input:checked').each(function() {
+                        requested_properties.push($(this).prop('name'));
+                    });
+
+                    if (requested_properties.length) {
+                        function poll_data() {
+                            // save current
+                            crunch_data();
+
+                            // request new
+                            for (var i = 0; i < requested_properties.length; i++) {
+                                send_message(MSP_codes[requested_properties[i]]);
+
+                                /* this approach could be used if we want to utilize request time compensation
+                                if (i < requested_properties.length -1) {
+                                    send_message(requested_properties[i]);
+                                } else {
+                                    send_message(requested_properties[i], false, false, poll_data);
+                                }
+                                */
+                            }
+                        }
+
+                        GUI.interval_add('log_data_pull', poll_data, 1000, true); // refresh rate goes here
+                        GUI.interval_add('flush_data', function() {
+                            if (fileWriter.readyState == 0 || fileWriter.readyState == 2) {
+                                append_to_file(log_buffer.join('\n'));
+
+                                $('.samples').text(samples += log_buffer.length);
+                                $('.size').text((fileWriter.length / 1024).toFixed(2) + ' kB');
+
+                                log_buffer = [];
+                            } else {
+                                console.log('IO having trouble keeping up with the data flow');
+                            }
+                        }, 1000);
+
+                        $(this).text('Stop Logging');
+                        $(this).data("clicks", !clicks);
+                    } else {
+                        GUI.log('Please select at least one property to log');
+                    }
+                } else {
+                    GUI.interval_remove('log_data_pull');
+                    GUI.interval_remove('flush_data');
+
+                    $(this).text('Start Logging');
+                    $(this).data("clicks", !clicks);
+                }
+            } else {
+                GUI.log('Please select log file');
             }
         });
     }
 
+    var samples = 0;
+    var log_buffer = [];
+    function crunch_data() {
+        var sample = millitime();
+
+        for (var i = 0; i < requested_properties.length; i++) {
+            switch (requested_properties[i]) {
+                case 'MSP_RAW_IMU':
+                    sample += ',' + SENSOR_DATA.gyroscope;
+                    sample += ',' + SENSOR_DATA.accelerometer;
+                    sample += ',' + SENSOR_DATA.magnetometer;
+                    break;
+                case 'MSP_ATTITUDE':
+                    sample += ',' + SENSOR_DATA.kinematicsX;
+                    sample += ',' + SENSOR_DATA.kinematicsY;
+                    sample += ',' + SENSOR_DATA.kinematicsZ;
+                    break;
+                case 'MSP_ALTITUDE':
+                    sample += ',' + SENSOR_DATA.altitude;
+                    break;
+                case 'MSP_RC':
+                    for (var chan = 0; chan < RC.active_channels; chan++) {
+                        sample += ',' + RC.channels[chan];
+                    }
+                    break;
+                case 'MSP_MOTOR':
+                    sample += ',' + MOTOR_DATA;
+                    break;
+                case 'MSP_DEBUG':
+                    sample += ',' + SENSOR_DATA.debug;
+                    break;
+            }
+        }
+
+        log_buffer.push(sample);
+    }
+
     // IO related methods
     var fileEntry = null;
     var fileWriter = null;