publish libraries to avoid users to have to download them one by one
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// Copyright 2015 Kristian Lauszus
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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 "IRtimer.h"
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#include "IRutils.h"
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// JJJJJ V V CCCC
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// J V V C
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// J V V C
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// J J V V C
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// J V CCCC
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// JVC originally added by Kristian Lauszus
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// (Thanks to zenwheel and other people at the original blog post)
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// Constants
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// Ref:
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// http://www.sbprojects.com/knowledge/ir/jvc.php
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#define JVC_TICK 75U
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#define JVC_HDR_MARK_TICKS 112U
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#define JVC_HDR_MARK (JVC_HDR_MARK_TICKS * JVC_TICK)
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#define JVC_HDR_SPACE_TICKS 56U
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#define JVC_HDR_SPACE (JVC_HDR_SPACE_TICKS * JVC_TICK)
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#define JVC_BIT_MARK_TICKS 7U
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#define JVC_BIT_MARK (JVC_BIT_MARK_TICKS * JVC_TICK)
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#define JVC_ONE_SPACE_TICKS 23U
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#define JVC_ONE_SPACE (JVC_ONE_SPACE_TICKS * JVC_TICK)
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#define JVC_ZERO_SPACE_TICKS 7U
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#define JVC_ZERO_SPACE (JVC_ZERO_SPACE_TICKS * JVC_TICK)
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#define JVC_RPT_LENGTH_TICKS 800U
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#define JVC_RPT_LENGTH (JVC_RPT_LENGTH_TICKS * JVC_TICK)
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#define JVC_MIN_GAP_TICKS (JVC_RPT_LENGTH_TICKS - \
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(JVC_HDR_MARK_TICKS + JVC_HDR_SPACE_TICKS + \
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JVC_BITS * (JVC_BIT_MARK_TICKS + JVC_ONE_SPACE_TICKS) + \
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JVC_BIT_MARK_TICKS))
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#define JVC_MIN_GAP (JVC_MIN_GAP_TICKS * JVC_TICK)
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#if SEND_JVC
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// Send a JVC message.
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//
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// Args:
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// data: The contents of the command you want to send.
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// nbits: The bit size of the command being sent. (JVC_BITS)
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// repeat: The number of times you want the command to be repeated.
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//
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// Status: STABLE.
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//
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// Ref:
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// http://www.sbprojects.com/knowledge/ir/jvc.php
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void IRsend::sendJVC(uint64_t data, uint16_t nbits, uint16_t repeat) {
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// Set 38kHz IR carrier frequency & a 1/3 (33%) duty cycle.
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enableIROut(38, 33);
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IRtimer usecs = IRtimer();
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// Header
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// Only sent for the first message.
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mark(JVC_HDR_MARK);
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space(JVC_HDR_SPACE);
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// We always send the data & footer at least once, hence '<= repeat'.
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for (uint16_t i = 0; i <= repeat; i++) {
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// Data
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sendData(JVC_BIT_MARK, JVC_ONE_SPACE, JVC_BIT_MARK, JVC_ZERO_SPACE,
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data, nbits, true);
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// Footer
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mark(JVC_BIT_MARK);
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// Wait till the end of the repeat time window before we send another code.
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space(std::max(JVC_MIN_GAP, JVC_RPT_LENGTH - usecs.elapsed()));
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usecs.reset();
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}
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}
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// Calculate the raw JVC data based on address and command.
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//
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// Args:
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// address: An 8-bit address value.
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// command: An 8-bit command value.
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// Returns:
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// A raw JVC message.
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//
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// Status: BETA / Should work fine.
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//
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// Ref:
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// http://www.sbprojects.com/knowledge/ir/jvc.php
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uint16_t IRsend::encodeJVC(uint8_t address, uint8_t command) {
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return reverseBits((command << 8) | address, 16);
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}
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#endif
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#if DECODE_JVC
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// Decode the supplied JVC 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 of data to expect. Typically JVC_BITS.
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// strict: Flag indicating if we should perform strict matching.
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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
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//
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// Note:
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// JVC repeat codes don't have a header.
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// Ref:
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// http://www.sbprojects.com/knowledge/ir/jvc.php
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bool IRrecv::decodeJVC(decode_results *results, uint16_t nbits, bool strict) {
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if (strict && nbits != JVC_BITS)
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return false; // Must be called with the correct nr. of bits.
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if (results->rawlen < 2 * nbits + FOOTER - 1)
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return false; // Can't possibly be a valid JVC message.
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uint64_t data = 0;
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uint16_t offset = OFFSET_START;
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bool isRepeat = true;
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uint32_t m_tick;
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uint32_t s_tick;
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// Header
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// (Optional as repeat codes don't have the header)
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if (matchMark(results->rawbuf[offset], JVC_HDR_MARK)) {
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isRepeat = false;
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m_tick = results->rawbuf[offset++] * RAWTICK / JVC_HDR_MARK_TICKS;
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if (results->rawlen < 2 * nbits + 4)
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return false; // Can't possibly be a valid JVC message with a header.
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if (!matchSpace(results->rawbuf[offset], JVC_HDR_SPACE))
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return false;
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s_tick = results->rawbuf[offset++] * RAWTICK / JVC_HDR_SPACE_TICKS;
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} else {
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// We can't easily auto-calibrate as there is no header, so assume
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// the default tick time.
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m_tick = JVC_TICK;
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s_tick = JVC_TICK;
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}
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// Data
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match_result_t data_result = matchData(&(results->rawbuf[offset]), nbits,
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JVC_BIT_MARK_TICKS * m_tick,
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JVC_ONE_SPACE_TICKS * s_tick,
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JVC_BIT_MARK_TICKS * m_tick,
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JVC_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++], JVC_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], JVC_MIN_GAP_TICKS * s_tick))
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return false;
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// Success
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results->decode_type = JVC;
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results->bits = nbits;
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results->value = data;
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// command & address are transmitted LSB first, so we need to reverse them.
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results->address = reverseBits(data >> 8, 8); // The first 8 bits sent.
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results->command = reverseBits(data & 0xFF, 8); // The last 8 bits sent.
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results->repeat = isRepeat;
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return true;
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}
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#endif
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