111 lines
3.9 KiB
C++
111 lines
3.9 KiB
C++
// Copyright 2009 Ken Shirriff
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// Copyright 2017 David Conran
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#include <algorithm>
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#include "IRrecv.h"
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#include "IRsend.h"
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#include "IRutils.h"
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// NN NN IIIII KK KK AAA IIIII
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// NNN NN III KK KK AAAAA III
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// NN N NN III KKKK AA AA III
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// NN NNN III KK KK AAAAAAA III
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// NN NN IIIII KK KK AA AA IIIII
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// Constants
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// Ref:
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// https://github.com/markszabo/IRremoteESP8266/issues/309
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#define NIKAI_TICK 500U
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#define NIKAI_HDR_MARK_TICKS 8U
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#define NIKAI_HDR_MARK (NIKAI_HDR_MARK_TICKS * NIKAI_TICK)
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#define NIKAI_HDR_SPACE_TICKS 8U
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#define NIKAI_HDR_SPACE (NIKAI_HDR_SPACE_TICKS * NIKAI_TICK)
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#define NIKAI_BIT_MARK_TICKS 1U
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#define NIKAI_BIT_MARK (NIKAI_BIT_MARK_TICKS * NIKAI_TICK)
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#define NIKAI_ONE_SPACE_TICKS 2U
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#define NIKAI_ONE_SPACE (NIKAI_ONE_SPACE_TICKS * NIKAI_TICK)
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#define NIKAI_ZERO_SPACE_TICKS 4U
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#define NIKAI_ZERO_SPACE (NIKAI_ZERO_SPACE_TICKS * NIKAI_TICK)
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#define NIKAI_MIN_GAP_TICKS 17U
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#define NIKAI_MIN_GAP (NIKAI_MIN_GAP_TICKS * NIKAI_TICK)
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#if SEND_NIKAI
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// Send a Nikai TV formatted message.
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//
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// Args:
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// data: The message to be sent.
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// nbits: The bit size of the message being sent. typically NIKAI_BITS.
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// repeat: The number of times the message is to be repeated.
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//
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// Status: STABLE / Working.
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//
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// Ref: https://github.com/markszabo/IRremoteESP8266/issues/309
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void IRsend::sendNikai(uint64_t data, uint16_t nbits, uint16_t repeat) {
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sendGeneric(NIKAI_HDR_MARK, NIKAI_HDR_SPACE,
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NIKAI_BIT_MARK, NIKAI_ONE_SPACE,
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NIKAI_BIT_MARK, NIKAI_ZERO_SPACE,
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NIKAI_BIT_MARK, NIKAI_MIN_GAP,
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data, nbits, 38, true, repeat, 33);
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}
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#endif
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#if DECODE_NIKAI
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// Decode the supplied Nikai message.
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//
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// Args:
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// results: Ptr to the data to decode and where to store the decode result.
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// nbits: Nr. of bits to expect in the data portion.
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// Typically NIKAI_BITS.
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// strict: Flag to indicate if we strictly adhere to the specification.
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// Returns:
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// boolean: True if it can decode it, false if it can't.
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//
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// Status: STABLE / Working.
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//
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bool IRrecv::decodeNikai(decode_results *results, uint16_t nbits, bool strict) {
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if (results->rawlen < 2 * nbits + HEADER + FOOTER - 1)
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return false; // Can't possibly be a valid Nikai message.
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if (strict && nbits != NIKAI_BITS)
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return false; // We expect Nikai to be a certain sized message.
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uint64_t data = 0;
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uint16_t offset = OFFSET_START;
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// Header
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if (!matchMark(results->rawbuf[offset], NIKAI_HDR_MARK)) return false;
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// Calculate how long the common tick time is based on the header mark.
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uint32_t m_tick = results->rawbuf[offset++] * RAWTICK /
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NIKAI_HDR_MARK_TICKS;
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if (!matchSpace(results->rawbuf[offset], NIKAI_HDR_SPACE)) return false;
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// Calculate how long the common tick time is based on the header space.
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uint32_t s_tick = results->rawbuf[offset++] * RAWTICK /
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NIKAI_HDR_SPACE_TICKS;
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// Data
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match_result_t data_result = matchData(&(results->rawbuf[offset]), nbits,
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NIKAI_BIT_MARK_TICKS * m_tick,
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NIKAI_ONE_SPACE_TICKS * s_tick,
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NIKAI_BIT_MARK_TICKS * m_tick,
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NIKAI_ZERO_SPACE_TICKS * s_tick);
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if (data_result.success == false) return false;
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data = data_result.data;
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offset += data_result.used;
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// Footer
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if (!matchMark(results->rawbuf[offset++], NIKAI_BIT_MARK_TICKS * m_tick))
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return false;
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if (offset < results->rawlen &&
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!matchAtLeast(results->rawbuf[offset], NIKAI_MIN_GAP_TICKS * s_tick))
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return false;
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// Compliance
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// Success
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results->bits = nbits;
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results->value = data;
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results->decode_type = NIKAI;
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results->command = 0;
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results->address = 0;
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return true;
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}
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#endif
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