1 #include "rc6skyprotocol.h"
3 #include "pirrx51hardware.h"
5 #include "pirexception.h"
8 extern bool commandInFlight;
9 extern QMutex commandIFMutex;
11 // These defines might need to be turned into variables, for odd devices.
12 #define HEADER_PULSE 2666
13 #define HEADER_SPACE 888
14 #define TRAILER_BIPHASE 888
16 // This version of Mode 6 RC6 is used in Sky and Sky+ receivers. It seems to
17 // be pretty close to vanilla RC6.
18 // The biphase unit of time is 444 usec.
19 // The RC6 header block starts with the normal 2666 usec pulse, 888 usec space.
20 // The next bit is fixed as a "1", as usual.
21 // The next three bits are 110, marking this as a mode 6 protocol.
22 // The trailer bit has an 888 usec biphase. It is normally a toggle bit, but
23 // for Sky, it appears to be fixed at "0".
24 // Next comes 8 bits of address, 4 bits I don't know about (subdevice?),
25 // and finally 8 bits of command.
26 // A space of (at least) 2666 usec must follow any command.
27 // The carrier frequency is 36 kHZ, duty cycle between 25 and 50 %.
29 RC6SkyProtocol::RC6SkyProtocol(
32 : PIRProtocol(guiObject, index, 2666, false),
37 setCarrierFrequency(36000);
41 void RC6SkyProtocol::startSendingCommand(
42 unsigned int threadableID,
47 // Is this command meant for us?
48 if (threadableID != id) return;
52 KeycodeCollection::const_iterator i = keycodes.find(command);
55 if (i == keycodes.end())
57 std::string s = "Tried to send a non-existent command.\n";
58 throw PIRException(s);
61 PIRRX51Hardware rx51device(carrierFrequency, dutyCycle);
65 while (repeatCount < MAX_REPEAT_COUNT)
67 bufferContainsSpace = false;
68 bufferContainsPulse = false;
69 // First, construct the "Header" segment of the pulse train.
71 // The header involves:
72 // a) a "lead" of 2666 us pulse, 888 us space;
73 // b) a "start bit", value 1 (so 444 us pulse, 444 us space)
74 // c) three control bits, set to "110" (i.e., mode "6")
75 // d) the double-sized "trailer" bit, set based on the keypress count:
76 // d2) I'm trying out setting the toggle bit to always be 0.
78 rx51device.addSingle(HEADER_PULSE); // lead pulse
79 duration += HEADER_PULSE;
80 rx51device.addSingle(HEADER_SPACE); // lead space
81 duration += HEADER_SPACE;
82 rx51device.addSingle(biphaseUnit); // start bit pulse
83 duration += biphaseUnit;
84 rx51device.addSingle(biphaseUnit); // start bit space
85 duration += biphaseUnit;
86 rx51device.addSingle(biphaseUnit); // bit 1 pulse;
87 duration += biphaseUnit;
88 rx51device.addSingle(biphaseUnit); // bit 1 space;
89 duration += biphaseUnit;
90 rx51device.addSingle(biphaseUnit); // bit 2 pulse;
91 duration += biphaseUnit;
92 rx51device.addSingle(2 * biphaseUnit); // bit 2 space + bit 3 space;
93 duration += 2 * biphaseUnit;
94 rx51device.addSingle(biphaseUnit); // bit 3 pulse;
95 duration += biphaseUnit;
96 rx51device.addSingle(2 * biphaseUnit); // trailer space
97 duration += 2 * biphaseUnit;
98 buffer = 2 * biphaseUnit; // trailer pulse goes into the buffer
99 bufferContainsPulse = true;
101 // Now, we can start the normal buffering process:
103 // push the address data:
104 duration += pushBits(preData, rx51device);
106 // push the command data:
107 duration += pushBits((*i).second.firstCode, rx51device);
109 // Flush out the buffer, if necessary:
112 rx51device.addSingle(buffer);
117 // Actually send out the command:
118 rx51device.sendCommandToDevice();
120 // Sleep for an amount of time. (RC6 demands an addtional 6 unit space
121 // at the end of any command...)
122 sleepUntilRepeat(duration + 6 * biphaseUnit);
124 // Have we been told to stop yet?
125 if (checkRepeatFlag())
127 // Yes, we can now quit repeating:
129 QMutexLocker ciflocker(&commandIFMutex);
130 commandInFlight = false;
135 catch (PIRException e)
137 emit commandFailed(e.getError().c_str());
141 QMutexLocker cifLocker(&commandIFMutex);
142 commandInFlight = false;
146 int RC6SkyProtocol::pushBits(
147 const CommandSequence &bits,
148 PIRRX51Hardware &rx51device)
152 CommandSequence::const_iterator i = bits.begin();
154 while (i != bits.end())
158 duration += pushOne(rx51device);
162 duration += pushZero(rx51device);
172 // This should be part of a general RC6 parent maybe?
173 int RC6SkyProtocol::pushZero(
174 PIRRX51Hardware &rx51device)
176 // Need to add a space, then a pulse.
179 if (bufferContainsSpace)
181 // Merge this space and the previous one, and send to device:
182 rx51device.addSingle(buffer + biphaseUnit);
183 duration += (buffer + biphaseUnit);
185 bufferContainsSpace = false;
189 if (bufferContainsPulse)
191 // Flush out the buffer:
192 rx51device.addSingle(buffer);
195 bufferContainsPulse = false;
198 // push a space onto the device:
199 rx51device.addSingle(biphaseUnit);
200 duration += biphaseUnit;
203 // Put a pulse into the buffer to wait:
204 buffer = biphaseUnit;
205 bufferContainsPulse = true;
211 int RC6SkyProtocol::pushOne(
212 PIRRX51Hardware &rx51device)
214 // Need to add a pulse, then a space.
218 if (bufferContainsPulse)
220 rx51device.addSingle(buffer + biphaseUnit);
221 duration += (buffer + biphaseUnit);
223 bufferContainsPulse = false;
227 if (bufferContainsSpace)
230 rx51device.addSingle(buffer);
233 bufferContainsSpace = false;
235 // Now, add the pulse:
236 rx51device.addSingle(biphaseUnit);
237 duration += biphaseUnit;
240 // Next, push a space onto the buffer:
241 buffer = biphaseUnit;
242 bufferContainsSpace = true;