1 files changed, 153 insertions, 0 deletions
diff --git a/nci/jni/Pn544Interop.cpp b/nci/jni/Pn544Interop.cpp
new file mode 100644
index 0000000..be92c75
--- /dev/null
+++ b/nci/jni/Pn544Interop.cpp
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*****************************************************************************
+**
+**  Name:           Pn544Interop.cpp
+**
+**  Description:    Implement operations that provide compatibility with NXP
+**                  PN544 controller.  Specifically facilitate peer-to-peer
+**                  operations with PN544 controller.
+**
+*****************************************************************************/
+#include "OverrideLog.h"
+#include "Pn544Interop.h"
+#include "IntervalTimer.h"
+#include "Mutex.h"
+#include "NfcTag.h"
+namespace android
+{
+    extern void startStopPolling (bool isStartPolling);
+}
+
+
+/*****************************************************************************
+**
+** private variables and functions
+**
+*****************************************************************************/
+
+
+static const int gIntervalTime = 1000; //millisecond between the check to restore polling
+static IntervalTimer gTimer;
+static Mutex gMutex;
+static void pn544InteropStartPolling (union sigval); //callback function for interval timer
+static bool gIsBusy = false; //is timer busy?
+static bool gAbortNow = false; //stop timer during next callback
+
+
+/*******************************************************************************
+**
+** Function:        pn544InteropStopPolling
+**
+** Description:     Stop polling to let NXP PN544 controller poll.
+**                  PN544 should activate in P2P mode.
+**
+** Returns:         None
+**
+*******************************************************************************/
+void pn544InteropStopPolling ()
+{
+    ALOGD ("%s: enter", __FUNCTION__);
+    gMutex.lock ();
+    gTimer.kill ();
+    android::startStopPolling (false);
+    gIsBusy = true;
+    gAbortNow = false;
+    gTimer.set (gIntervalTime, pn544InteropStartPolling); //after some time, start polling again
+    gMutex.unlock ();
+    ALOGD ("%s: exit", __FUNCTION__);
+}
+
+
+/*******************************************************************************
+**
+** Function:        pn544InteropStartPolling
+**
+** Description:     Start polling when activation state is idle.
+**                  sigval: Unused.
+**
+** Returns:         None
+**
+*******************************************************************************/
+void pn544InteropStartPolling (union sigval)
+{
+    ALOGD ("%s: enter", __FUNCTION__);
+    gMutex.lock ();
+    NfcTag::ActivationState state = NfcTag::getInstance ().getActivationState ();
+
+    if (gAbortNow)
+    {
+        ALOGD ("%s: abort now", __FUNCTION__);
+        gIsBusy = false;
+        goto TheEnd;
+    }
+
+    if (state == NfcTag::Idle)
+    {
+        ALOGD ("%s: start polling", __FUNCTION__);
+        android::startStopPolling (true);
+        gIsBusy = false;
+    }
+    else
+    {
+        ALOGD ("%s: try again later", __FUNCTION__);
+        gTimer.set (gIntervalTime, pn544InteropStartPolling); //after some time, start polling again
+    }
+
+TheEnd:
+    gMutex.unlock ();
+    ALOGD ("%s: exit", __FUNCTION__);
+}
+
+
+/*******************************************************************************
+**
+** Function:        pn544InteropIsBusy
+**
+** Description:     Is the code performing operations?
+**
+** Returns:         True if the code is busy.
+**
+*******************************************************************************/
+bool pn544InteropIsBusy ()
+{
+    bool isBusy = false;
+    gMutex.lock ();
+    isBusy = gIsBusy;
+    gMutex.unlock ();
+    ALOGD ("%s: %u", __FUNCTION__, isBusy);
+    return isBusy;
+}
+
+
+/*******************************************************************************
+**
+** Function:        pn544InteropAbortNow
+**
+** Description:     Request to abort all operations.
+**
+** Returns:         None.
+**
+*******************************************************************************/
+void pn544InteropAbortNow ()
+{
+    ALOGD ("%s", __FUNCTION__);
+    gMutex.lock ();
+    gAbortNow = true;
+    gMutex.unlock ();
+}
+