Add basic Zepeal protocol support

src/IRrecv.cpp

@@ -850,6 +850,10 @@ bool IRrecv::decode(decode_results *results, irparams_t *save,
     DPRINTLN("Attempting Midea-Nec decode");
     if (decodeMidea24(results, offset)) return true;
 #endif  // DECODE_MIDEA24
+#if DECODE_ZEPEAL
+    DPRINTLN("Attempting Zepeal decode");
+    if (decodeZepeal(results, offset)) return true;
+#endif  // DECODE_ZEPEAL
   // Typically new protocols are added above this line.
   }
 #if DECODE_HASH

src/IRrecv.h

@@ -646,6 +646,11 @@ class IRrecv {
                       const uint16_t nbits = kCoronaAcBitsShort,
                       const bool strict = true);
 #endif  // DECODE_CORONA_AC
+#if DECODE_ZEPEAL
+bool decodeZepeal(decode_results *results, uint16_t offset = kStartOffset,
+                  const uint16_t nbits = kZepealBits,
+                  const bool strict = true);
+#endif  // DECODE_ZEPEAL
 };
 
 #endif  // IRRECV_H_

src/IRremoteESP8266.h

@@ -648,6 +648,12 @@
 #ifndef SEND_MULTIBRACKETS
 #define SEND_MULTIBRACKETS     _IR_ENABLE_DEFAULT_
 #endif  // SEND_MULTIBRACKETS
+#ifndef DECODE_ZEPEAL
+#define DECODE_ZEPEAL          _IR_ENABLE_DEFAULT_
+#endif  // DECODE_ZEPEAL
+#ifndef SEND_ZEPEAL
+#define SEND_ZEPEAL            _IR_ENABLE_DEFAULT_
+#endif  // SEND_ZEPEAL
 
 #ifndef DECODE_CORONA_AC
 #define DECODE_CORONA_AC       _IR_ENABLE_DEFAULT_
@@ -794,8 +800,9 @@ enum decode_type_t {
   HITACHI_AC344,  // 85
   CORONA_AC,
   MIDEA24,
+  ZEPEAL,
   // Add new entries before this one, and update it to point to the last entry.
-  kLastDecodeType = MIDEA24,
+  kLastDecodeType = ZEPEAL,
 };
 
 // Message lengths & required repeat values
@@ -999,6 +1006,8 @@ const uint16_t kWhirlpoolAcBits = kWhirlpoolAcStateLength * 8;
 const uint16_t kWhirlpoolAcDefaultRepeat = kNoRepeat;
 const uint16_t kWhynterBits = 32;
 const uint8_t  kVestelAcBits = 56;
+const uint16_t kZepealBits = 16;
+const uint16_t kZepealMinRepeat = 4;
 
 
 // Legacy defines. (Deprecated)

src/IRsend.cpp

@@ -589,6 +589,8 @@ uint16_t IRsend::minRepeats(const decode_type_t protocol) {
       return kSonyMinRepeat + 1;
     case SYMPHONY:
       return kSymphonyDefaultRepeat;
+    case ZEPEAL:
+      return kZepealMinRepeat;
     default:
       return kNoRepeat;
   }
@@ -617,6 +619,7 @@ uint16_t IRsend::defaultBits(const decode_type_t protocol) {
     case LEGOPF:
     case MITSUBISHI:
     case MITSUBISHI2:
+    case ZEPEAL:
       return 16;
     case RC6:
     case SONY:
@@ -977,6 +980,11 @@ bool IRsend::send(const decode_type_t type, const uint64_t data,
     case WHYNTER:
       sendWhynter(data, nbits, min_repeat);
       break;
+#endif
+#if SEND_ZEPEAL
+    case ZEPEAL:
+      sendZepeal(data, nbits, min_repeat);
+      break;
 #endif
     default:
       return false;

src/IRsend.h

@@ -624,6 +624,11 @@ class IRsend {
                     const uint16_t nbytes = kCoronaAcStateLength,
                     const uint16_t repeat = kNoRepeat);
 #endif  // SEND_CORONA_AC
+#if SEND_ZEPEAL
+  void sendZepeal(const uint64_t data,
+                  const uint16_t nbits = kZepealBits,
+                  const uint16_t repeat = kZepealMinRepeat);
+#endif
 
  protected:
 #ifdef UNIT_TEST

src/IRtext.cpp

@@ -262,5 +262,6 @@ const PROGMEM char *kAllProtocolNamesStr =
     D_STR_HITACHI_AC344 "\x0"
     D_STR_CORONA_AC "\x0"
     D_STR_MIDEA24 "\x0"
+    D_STR_ZEPEAL "\x0"
     // New protocol strings should be added just above this line.
     "\x0";  // This string requires double null termination.

src/ir_Zepeal.cpp

@@ -0,0 +1,87 @@
+// Copyright 2020 Christian Nilsson (nikize)
+
+/// @file
+/// @brief Support for Zepeal protocol.
+/// This protocol uses fixed length bit encoding.
+/// Company behinde this brand seems to be Denkyosha
+/// @see https://www.denkyosha.co.jp/
+
+// Supports:
+//   Brand: Zepeal,  Model: DRT-A3311(BG) floor fan
+//   Brand: Zepeal,  Model: DRT-A3311(BG) 5 button remote
+
+#include "IRrecv.h"
+#include "IRsend.h"
+#include "IRutils.h"
+
+// Constants
+
+const uint16_t kZepealHdrMark = 2330;
+const uint16_t kZepealHdrSpace = 3380;
+const uint16_t kZepealOneMark = 1300;
+const uint16_t kZepealZeroMark = 420;
+const uint16_t kZepealOneSpace = kZepealZeroMark;
+const uint16_t kZepealZeroSpace = kZepealOneMark;
+const uint16_t kZepealFooterMark = 420;
+const uint16_t kZepealGap = 6750;
+
+const uint8_t  kZepealTolerance = 40;
+
+const uint8_t kZepealCheckExpected = 0x6C;
+
+#if SEND_ZEPEAL
+/// Send a Zepeal formatted message.
+/// Status: STABLE / Works on real device.
+/// @param[in] data The message to be sent.
+/// @param[in] nbits The bit size of the message being sent.
+/// @param[in] repeat The number of times the message is to be repeated.
+void IRsend::sendZepeal(uint64_t data, uint16_t nbits, uint16_t repeat) {
+  sendGeneric(kZepealHdrMark, kZepealHdrSpace,
+              kZepealOneMark, kZepealOneSpace,
+              kZepealZeroMark, kZepealZeroSpace,
+              kZepealFooterMark, kZepealGap,
+              data, nbits, 38, true, repeat, kDutyDefault);
+}
+#endif  // SEND_ZEPEAL
+
+#if DECODE_ZEPEAL
+/// Decode the supplied Zepeal message.
+/// Status: STABLE / Works on real device.
+/// @param[in,out] results Ptr to the data to decode & where to store the decode
+///   result.
+/// @param[in] offset The starting index to use when attempting to decode the
+///   raw data. Typically/Defaults to kStartOffset.
+/// @param[in] nbits The number of data bits to expect. Typically kZepealBits.
+/// @param[in] strict Flag indicating if we should perform strict matching.
+/// @return A boolean. True if it can decode it, false if it can't.
+bool IRrecv::decodeZepeal(decode_results *results, uint16_t offset,
+                          const uint16_t nbits, const bool strict) {
+  if (results->rawlen <= 2 * nbits + kHeader - 1 + offset)
+    return false;  // Can't possibly be a valid message.
+  if (strict && nbits != kZepealBits)
+    return false;  // Not strictly a message.
+
+  uint64_t data = 0;
+  uint16_t used;
+  used = matchGeneric(results->rawbuf + offset, &data,
+                      results->rawlen - offset, nbits,
+                      kZepealHdrMark, kZepealHdrSpace,
+                      kZepealOneMark, kZepealOneSpace,
+                      kZepealZeroMark, kZepealZeroSpace,
+                      kZepealFooterMark, kZepealGap, true,
+                      kZepealTolerance);
+  if (!used) return false;
+  // CheckExpected limits possible false possitvies,
+  // but might need change (removal) if more devices are detected
+  if (strict && (data >> 8) != kZepealCheckExpected) return false;
+  offset += used;
+
+  // Success
+  results->value = data;
+  results->decode_type = decode_type_t::ZEPEAL;
+  results->bits = nbits;
+  results->address = 0;
+  results->command = 0;
+  return true;
+}
+#endif  // DECODE_ZEPEAL

src/locale/defaults.h

@@ -730,6 +730,9 @@
 #ifndef D_STR_WHYNTER
 #define D_STR_WHYNTER "WHYNTER"
 #endif  // D_STR_WHYNTER
+#ifndef D_STR_ZEPEAL
+#define D_STR_ZEPEAL "ZEPEAL"
+#endif  // D_STR_ZEPEAL
 
 // IRrecvDumpV2+
 #ifndef D_STR_TIMESTAMP