X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=protocols%2Fprotonprotocol.cpp;fp=protocols%2Fprotonprotocol.cpp;h=c1f956be163fdbe4873e96469e53df4bed0af65a;hb=04d45dab5c6b32e9214fa21b7ade432da95c8a98;hp=0000000000000000000000000000000000000000;hpb=7176298055beaf1a9ad8f9fd1099f93df3461265;p=pierogi

diff --git a/protocols/protonprotocol.cpp b/protocols/protonprotocol.cpp
new file mode 100644
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+++ b/protocols/protonprotocol.cpp
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+#include "protonprotocol.h"
+
+#include "pirrx51hardware.h"
+
+#include "pirexception.h"
+
+// Some global communications stuff:
+#include <QMutex>
+extern bool commandInFlight;
+extern QMutex commandIFMutex;
+
+// The proton protocol seems fairly similar to the NEC protocol, although
+// somewhat simplified.
+// A "zero" is encoded with a 500 usec pulse, 500 usec space.
+// A "one" is encoded with a 500 usec pulse, and 3*500 (1500) usec space.
+// The header is a 8000 usec pulse, 4000 usec space.
+// Commands end with a trailing 500 usec pulse.
+// When repeating, the entire pulse-train is retransmitted.
+// The duration of each full frame is 63000 usec.
+// The normal carrier frequency is 38 kHz.
+
+ProtonProtocol::ProtonProtocol(
+  QObject *guiObject,
+  unsigned int index)
+  : SpaceProtocol(
+      guiObject, index,
+      500, 500,
+      500, 1500,
+      8000, 4000,
+      500,
+      63000, true)
+{
+}
+
+
+void ProtonProtocol::startSendingCommand(
+  unsigned int threadableID,
+  PIRKeyName command)
+{
+  // Exceptions here are problematic; I'll try to weed them out by putting the
+  // whole thing in a try/catch block:
+  try
+  {
+    // First, check if we are meant to be the recipient of this command:
+    if (threadableID != id) return;
+
+    clearRepeatFlag();
+
+    KeycodeCollection::const_iterator i = keycodes.find(command);
+
+    // Do we even have this key defined?
+    if (i == keycodes.end())
+    {
+      std::string s = "Tried to send a non-existent command.\n";
+      throw PIRException(s);
+    }
+
+    // construct the device:
+    PIRRX51Hardware rx51device(carrierFrequency, dutyCycle);
+
+    int repeatCount = 0;
+    int commandDuration = 0;
+    while (repeatCount < MAX_REPEAT_COUNT)
+    {
+      commandDuration = generateStandardCommand((*i).second, rx51device);
+
+      // Now, tell the device to send the whole command:
+      rx51device.sendCommandToDevice();
+
+      // sleep until the next repetition of command:
+      sleepUntilRepeat(commandDuration);
+
+      // Check whether we've reached the minimum required number of repetitons:
+      if (repeatCount >= minimumRepetitions)
+      {
+        // Check whether we've been asked to stop:
+        if (checkRepeatFlag())
+        {
+          QMutexLocker cifLocker(&commandIFMutex);
+          commandInFlight = false;
+          return;
+        }
+      }
+
+      ++repeatCount;
+    }
+  }
+  catch (PIRException e)
+  {
+    // inform the gui:
+    emit commandFailed(e.getError().c_str());
+  }
+
+  QMutexLocker cifLocker(&commandIFMutex);
+  commandInFlight = false;
+}
+
+
+int ProtonProtocol::generateStandardCommand(
+  const PIRKeyBits &pkb,
+  PIRRX51Hardware &rx51device)
+{
+  int duration = 0;
+
+  // First, the "header" pulse:
+  rx51device.addPair(headerPulse, headerSpace);
+  duration += (headerPulse + headerSpace);
+
+  // The Proton protocol contains an 8 bit address and an 8 bit command,
+  // in LSB order.  Between these two is a gap made up of a 500 usec pulse
+  // and a 4000 usec space.
+  // - "preData" should contain the address.
+  // - "firstCode" should contain the command.
+
+  duration += pushReverseBits(preData, rx51device);
+
+  rx51device.addPair(500, 4000);
+  duration += 4500;
+
+  duration += pushReverseBits(pkb.firstCode, rx51device);
+
+  // Finally add the "trail":
+  rx51device.addSingle(trailerPulse);
+  duration += trailerPulse;
+
+  return duration;
+}
+