--- /dev/null
+#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;
+}
+