71 lines
2.8 KiB
C++
71 lines
2.8 KiB
C++
// Copyright 2016 Hisham Khalifa
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// Copyright 2017 David Conran
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#include <algorithm>
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#include "IRsend.h"
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// GGG L OOOO BBBB AA L CCCC AA CCCC H H EEEEEE
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// G G L O O B B AAAA L C C AAAA C C H H E
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// G L O O BBBBB A A L C A A C HHHHHH EEEE
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// G GG L O O B BB AAAAAA L C C AAAAAA C C H H E
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// GGGGG LLLLLL OOOO BBBBB A A LLLLLL CCCC A A CCCC H H EEEEEE
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// Global Cache IR format sender originally added by Hisham Khalifa
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// (http://www.hishamkhalifa.com)
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// Constants
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const uint16_t kGlobalCacheMaxRepeat = 50;
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const uint32_t kGlobalCacheMinUsec = 80;
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const uint8_t kGlobalCacheFreqIndex = 0;
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const uint8_t kGlobalCacheRptIndex = kGlobalCacheFreqIndex + 1;
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const uint8_t kGlobalCacheRptStartIndex = kGlobalCacheRptIndex + 1;
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const uint8_t kGlobalCacheStartIndex = kGlobalCacheRptStartIndex + 1;
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#if SEND_GLOBALCACHE
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// Send a shortened GlobalCache (GC) IRdb/control tower formatted message.
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//
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// Args:
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// buf: An array of uint16_t containing the shortened GlobalCache data.
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// len: Nr. of entries in the buf[] array.
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//
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// Status: STABLE / Known working.
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//
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// Note:
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// Global Cache format without the emitter ID or request ID.
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// Starts at the frequency (Hertz), followed by nr. of times to emit (count),
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// then the offset for repeats (where a repeat will start from),
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// then the rest of entries are the actual IR message as units of periodic
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// time.
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// e.g. sendir,1:1,1,38000,1,1,9,70,9,30,9,... -> 38000,1,1,9,70,9,30,9,...
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// Ref:
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// https://irdb.globalcache.com/Home/Database
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void IRsend::sendGC(uint16_t buf[], uint16_t len) {
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uint16_t hz = buf[kGlobalCacheFreqIndex]; // GC frequency is in Hz.
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enableIROut(hz);
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uint32_t periodic_time = calcUSecPeriod(hz, false);
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uint8_t emits =
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std::min(buf[kGlobalCacheRptIndex], (uint16_t)kGlobalCacheMaxRepeat);
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// Repeat
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for (uint8_t repeat = 0; repeat < emits; repeat++) {
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// First time through, start at the beginning (kGlobalCacheStartIndex),
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// otherwise for repeats, we start a specified offset from that.
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uint16_t offset = kGlobalCacheStartIndex;
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if (repeat) offset += buf[kGlobalCacheRptStartIndex] - 1;
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// Data
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for (; offset < len; offset++) {
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// Convert periodic units to microseconds.
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// Minimum is kGlobalCacheMinUsec for actual GC units.
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uint32_t microseconds =
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std::max(buf[offset] * periodic_time, kGlobalCacheMinUsec);
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// These codes start at an odd index (not even as with sendRaw).
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if (offset & 1) // Odd bit.
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mark(microseconds);
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else // Even bit.
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space(microseconds);
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}
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}
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// It's possible that we've ended on a mark(), thus ensure the LED is off.
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ledOff();
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}
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#endif
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