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 QMutexLocker cifLocker(&commandIFMutex);
58 commandInFlight = false;
60 // std::string s = "Tried to send a non-existent command.\n";
61 // throw PIRException(s);
64 PIRRX51Hardware rx51device(carrierFrequency, dutyCycle);
68 while (repeatCount < MAX_REPEAT_COUNT)
70 bufferContainsSpace = false;
71 bufferContainsPulse = false;
72 // First, construct the "Header" segment of the pulse train.
74 // The header involves:
75 // a) a "lead" of 2666 us pulse, 888 us space;
76 // b) a "start bit", value 1 (so 444 us pulse, 444 us space)
77 // c) three control bits, set to "110" (i.e., mode "6")
78 // d) the double-sized "trailer" bit, set based on the keypress count:
79 // d2) I'm trying out setting the toggle bit to always be 0.
81 rx51device.addSingle(HEADER_PULSE); // lead pulse
82 duration += HEADER_PULSE;
83 rx51device.addSingle(HEADER_SPACE); // lead space
84 duration += HEADER_SPACE;
85 rx51device.addSingle(biphaseUnit); // start bit pulse
86 duration += biphaseUnit;
87 rx51device.addSingle(biphaseUnit); // start bit space
88 duration += biphaseUnit;
89 rx51device.addSingle(biphaseUnit); // bit 1 pulse;
90 duration += biphaseUnit;
91 rx51device.addSingle(biphaseUnit); // bit 1 space;
92 duration += biphaseUnit;
93 rx51device.addSingle(biphaseUnit); // bit 2 pulse;
94 duration += biphaseUnit;
95 rx51device.addSingle(2 * biphaseUnit); // bit 2 space + bit 3 space;
96 duration += 2 * biphaseUnit;
97 rx51device.addSingle(biphaseUnit); // bit 3 pulse;
98 duration += biphaseUnit;
99 rx51device.addSingle(2 * biphaseUnit); // trailer space
100 duration += 2 * biphaseUnit;
101 buffer = 2 * biphaseUnit; // trailer pulse goes into the buffer
102 bufferContainsPulse = true;
104 // Now, we can start the normal buffering process:
106 // push the address data:
107 duration += pushBits(preData, rx51device);
109 // push the command data:
110 duration += pushBits((*i).second.firstCode, rx51device);
112 // Flush out the buffer, if necessary:
115 rx51device.addSingle(buffer);
120 // Actually send out the command:
121 rx51device.sendCommandToDevice();
123 // Sleep for an amount of time. (RC6 demands an addtional 6 unit space
124 // at the end of any command...)
125 sleepUntilRepeat(duration + 6 * biphaseUnit);
127 // Have we been told to stop yet?
128 if (checkRepeatFlag())
130 // Yes, we can now quit repeating:
134 QMutexLocker ciflocker(&commandIFMutex);
135 commandInFlight = false;
142 QMutexLocker cifLocker(&commandIFMutex);
143 commandInFlight = false;
145 catch (PIRException e)
147 emit commandFailed(e.getError().c_str());
152 int RC6SkyProtocol::pushBits(
153 const CommandSequence &bits,
154 PIRRX51Hardware &rx51device)
158 CommandSequence::const_iterator i = bits.begin();
160 while (i != bits.end())
164 duration += pushOne(rx51device);
168 duration += pushZero(rx51device);
178 // This should be part of a general RC6 parent maybe?
179 int RC6SkyProtocol::pushZero(
180 PIRRX51Hardware &rx51device)
182 // Need to add a space, then a pulse.
185 if (bufferContainsSpace)
187 // Merge this space and the previous one, and send to device:
188 rx51device.addSingle(buffer + biphaseUnit);
189 duration += (buffer + biphaseUnit);
191 bufferContainsSpace = false;
195 if (bufferContainsPulse)
197 // Flush out the buffer:
198 rx51device.addSingle(buffer);
201 bufferContainsPulse = false;
204 // push a space onto the device:
205 rx51device.addSingle(biphaseUnit);
206 duration += biphaseUnit;
209 // Put a pulse into the buffer to wait:
210 buffer = biphaseUnit;
211 bufferContainsPulse = true;
217 int RC6SkyProtocol::pushOne(
218 PIRRX51Hardware &rx51device)
220 // Need to add a pulse, then a space.
224 if (bufferContainsPulse)
226 rx51device.addSingle(buffer + biphaseUnit);
227 duration += (buffer + biphaseUnit);
229 bufferContainsPulse = false;
233 if (bufferContainsSpace)
236 rx51device.addSingle(buffer);
239 bufferContainsSpace = false;
241 // Now, add the pulse:
242 rx51device.addSingle(biphaseUnit);
243 duration += biphaseUnit;
246 // Next, push a space onto the buffer:
247 buffer = biphaseUnit;
248 bufferContainsSpace = true;