--- /dev/null
+#include "mceprotocol.h"
+
+#include "pirrx51hardware.h"
+
+#include "pirexception.h"
+
+#include <QMutex>
+extern bool commandInFlight;
+extern QMutex commandIFMutex;
+
+// These defines might need to be turned into variables, for odd devices.
+#define HEADER_PULSE 2666
+#define HEADER_SPACE 888
+#define TRAILER_BIPHASE 888
+
+// Ok, what I've got on MCE protocol is this:
+// It is based on RC6 mode 6A, with a few odd tweaks.
+// The biphase unit of time is 444 usec.
+// The RC6 header block starts with the normal 2666 usec pulse, 888 usec space.
+// The next bit is fixed as a "1", as usual.
+// The next three bits are 110, marking this as a mode 6 protocol.
+// The trailer bit has an 888 usec biphase, is set to 0, and is _not_ toggled!
+// The next 16 bits I'm not sure about. Hopefully they will be a fixed value
+// for any given device...
+// Then, the next bit is the new toggle bit.
+// Following this, there are seven "device address" bits, and then eight
+// "command" bits.
+// A space of (at least) 2666 usec must follow any command.
+// The carrier frequency is 36 kHZ, duty cycle between 25 and 50 %.
+
+MCEProtocol::MCEProtocol(
+ QObject *guiObject,
+ unsigned int index,
+ unsigned int oemData)
+ : PIRProtocol(guiObject, index, 2666, false),
+ biphaseUnit(444),
+ buffer(0),
+ keypressCount(0)
+{
+ setCarrierFrequency(36000);
+ appendToBitSeq(oemBits, oemData, 16);
+}
+
+
+void MCEProtocol::startSendingCommand(
+ unsigned int threadableID,
+ PIRKeyName command)
+{
+ try
+ {
+ // Is this command meant for us?
+ if (threadableID != id) return;
+
+ clearRepeatFlag();
+
+ KeycodeCollection::const_iterator i = keycodes.find(command);
+
+ // Sanity check:
+ if (i == keycodes.end())
+ {
+ std::string s = "Tried to send a non-existent command.\n";
+ throw PIRException(s);
+ }
+
+ PIRRX51Hardware rx51device(carrierFrequency, dutyCycle);
+
+ int repeatCount = 0;
+ int duration = 0;
+ while (repeatCount < MAX_REPEAT_COUNT)
+ {
+ bufferContainsSpace = false;
+ bufferContainsPulse = false;
+ // First, construct the "Header" segment of the pulse train.
+ //
+ // The header involves:
+ // a) a "lead" of 2666 us pulse, 888 us space;
+ // b) a "start bit", value 1 (so 444 us pulse, 444 us space)
+ // c) three control bits, set to "110" (i.e., mode "6")
+ // d) the double-sized "trailer" bit, set to 0.
+
+ rx51device.addSingle(HEADER_PULSE); // lead pulse
+ duration += HEADER_PULSE;
+ rx51device.addSingle(HEADER_SPACE); // lead space
+ duration += HEADER_SPACE;
+ rx51device.addSingle(biphaseUnit); // start bit pulse
+ duration += biphaseUnit;
+ rx51device.addSingle(biphaseUnit); // start bit space
+ duration += biphaseUnit;
+ rx51device.addSingle(biphaseUnit); // bit 1 pulse;
+ duration += biphaseUnit;
+ rx51device.addSingle(biphaseUnit); // bit 1 space;
+ duration += biphaseUnit;
+ rx51device.addSingle(biphaseUnit); // bit 2 pulse;
+ duration += biphaseUnit;
+ rx51device.addSingle(2 * biphaseUnit); // bit 2 space + bit 3 space;
+ duration += 2 * biphaseUnit;
+ rx51device.addSingle(biphaseUnit); // bit 3 pulse;
+ duration += biphaseUnit;
+ rx51device.addSingle(2 * biphaseUnit); // trailer space
+ duration += 2 * biphaseUnit;
+ buffer = 2 * biphaseUnit; // trailer pulse goes into the buffer
+ bufferContainsPulse = true;
+
+ // Now, we can start the normal buffering process:
+
+ // push the "OEM" data:
+ duration += pushBits(oemBits, rx51device);
+
+ // The next bit is the MCE toggle bit:
+ if (keypressCount % 2)
+ {
+ pushOne(rx51device);
+ }
+ else
+ {
+ pushZero(rx51device);
+ }
+
+ // push the device address data:
+ duration += pushBits(preData, rx51device);
+
+ // push the command data:
+ duration += pushBits((*i).second.firstCode, rx51device);
+
+ // Flush out the buffer, if necessary:
+ if (buffer)
+ {
+ rx51device.addSingle(buffer);
+ duration += buffer;
+ buffer = 0;
+ }
+
+ // Actually send out the command:
+ rx51device.sendCommandToDevice();
+
+ // Sleep for an amount of time. (RC6 demands an addtional 6 unit space
+ // at the end of any command...)
+ sleepUntilRepeat(duration + 6 * biphaseUnit);
+
+ // Have we been told to stop yet?
+ if (checkRepeatFlag())
+ {
+ // Yes, we can now quit repeating:
+ ++keypressCount;
+ QMutexLocker ciflocker(&commandIFMutex);
+ commandInFlight = false;
+ return;
+ }
+ }
+ }
+ catch (PIRException e)
+ {
+ emit commandFailed(e.getError().c_str());
+ }
+
+ ++keypressCount;
+ QMutexLocker cifLocker(&commandIFMutex);
+ commandInFlight = false;
+}
+
+
+int MCEProtocol::pushBits(
+ const CommandSequence &bits,
+ PIRRX51Hardware &rx51device)
+{
+ int duration = 0;
+
+ CommandSequence::const_iterator i = bits.begin();
+
+ while (i != bits.end())
+ {
+ if (*i)
+ {
+ duration += pushOne(rx51device);
+ }
+ else
+ {
+ duration += pushZero(rx51device);
+ }
+
+ ++i;
+ }
+
+ return duration;
+}
+
+
+// This should be part of a general RC6 parent maybe?
+int MCEProtocol::pushZero(
+ PIRRX51Hardware &rx51device)
+{
+ // Need to add a space, then a pulse.
+ int duration = 0;
+
+ if (bufferContainsSpace)
+ {
+ // Merge this space and the previous one, and send to device:
+ rx51device.addSingle(buffer + biphaseUnit);
+ duration += (buffer + biphaseUnit);
+ buffer = 0;
+ bufferContainsSpace = false;
+ }
+ else
+ {
+ if (bufferContainsPulse)
+ {
+ // Flush out the buffer:
+ rx51device.addSingle(buffer);
+ duration += buffer;
+ buffer = 0;
+ bufferContainsPulse = false;
+ }
+
+ // push a space onto the device:
+ rx51device.addSingle(biphaseUnit);
+ duration += biphaseUnit;
+ }
+
+ // Put a pulse into the buffer to wait:
+ buffer = biphaseUnit;
+ bufferContainsPulse = true;
+
+ return duration;
+}
+
+
+int MCEProtocol::pushOne(
+ PIRRX51Hardware &rx51device)
+{
+ // Need to add a pulse, then a space.
+ int duration = 0;
+
+ // First, the pulse:
+ if (bufferContainsPulse)
+ {
+ rx51device.addSingle(buffer + biphaseUnit);
+ duration += (buffer + biphaseUnit);
+ buffer = 0;
+ bufferContainsPulse = false;
+ }
+ else
+ {
+ if (bufferContainsSpace)
+ {
+ // Flush the buffer:
+ rx51device.addSingle(buffer);
+ duration += buffer;
+ buffer = 0;
+ bufferContainsSpace = false;
+ }
+ // Now, add the pulse:
+ rx51device.addSingle(biphaseUnit);
+ duration += biphaseUnit;
+ }
+
+ // Next, push a space onto the buffer:
+ buffer = biphaseUnit;
+ bufferContainsSpace = true;
+
+ return duration;
+}
projects / pierogi / blobdiff