OP-35 New methods to suspend and resume USB polling by the Raw HID plugin. Required for the Uploader plugin.

git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@2053 ebee16cc-31ac-478f-84a7-5cbb03baadba

ground/src/plugins/rawhid/rawhidplugin.cpp

@@ -77,6 +77,7 @@ RawHIDConnection::RawHIDConnection()
 {
     //added by andrew
     RawHidHandle = NULL;
+    enablePolling = true;
 
 
     QObject::connect(&m_enumerateThread, SIGNAL(enumerationChanged()),
@@ -99,6 +100,7 @@ QStringList RawHIDConnection::availableDevices()
     QStringList devices;
     pjrc_rawhid dev;
 
+    if (enablePolling) {
         //open all device we can
         int opened = dev.open(MAX_DEVICES, VID, PID, USAGE_PAGE, USAGE);
 
@@ -108,6 +110,7 @@ QStringList RawHIDConnection::availableDevices()
             devices.append(dev.getserial(i));
             dev.close(i);
         }
+    }
 
     return devices;
 }
@@ -149,6 +152,23 @@ QString RawHIDConnection::shortName()
     return QString("USB");
 }
 
+/**
+ Tells the Raw HID plugin to stop polling for USB devices
+ */
+bool RawHIDConnection::suspendPolling()
+{
+    enablePolling = false;
+    return true;
+}
+
+/**
+ Tells the Raw HID plugin to resume polling for USB devices
+ */
+bool RawHIDConnection::resumePolling()
+{
+    enablePolling = true;
+    return true;
+}
 
 
 
@@ -201,7 +221,8 @@ RawHIDPlugin::~RawHIDPlugin()
 
 void RawHIDPlugin::extensionsInitialized()
 {
-    addAutoReleasedObject(new RawHIDConnection);
+    hidConnection = new RawHIDConnection();
+    addAutoReleasedObject(hidConnection);
 
     //temp for test
     //addAutoReleasedObject(new RawHIDTestThread);
@@ -215,5 +236,4 @@ bool RawHIDPlugin::initialize(const QStringList & arguments, QString * errorStri
     return true;
 }
 
-
 Q_EXPORT_PLUGIN(RawHIDPlugin)

ground/src/plugins/rawhid/rawhidplugin.h

@@ -83,6 +83,8 @@ public:
 
     virtual QString connectionName();
     virtual QString shortName();
+    bool suspendPolling();
+    bool resumePolling();
 
     bool deviceOpened() {return m_deviceOpened;}
 
@@ -91,6 +93,7 @@ protected slots:
 
 private:
     RawHID *RawHidHandle;
+    bool enablePolling;
 
 protected:
     QMutex m_enumMutex;
@@ -109,6 +112,8 @@ public:
 
     virtual bool initialize(const QStringList &arguments, QString *error_message);
     virtual void extensionsInitialized();
+private:
+    RawHIDConnection *hidConnection;
 };