Experimental basic support for Carrier 84-bit protocol. (#1945)

* Add `sendCarrierAC84()` and `decodeCarrierAC84()` routines.
* Create some unit tests to cover the new code.
* Hack in some support for non-byte-aligned > 64 bit protocols.
* Update supported devices.

For #1943

Author: crankyoldgit

src/IRrecv.cpp

@@ -1173,6 +1173,10 @@ bool IRrecv::decode(decode_results *results, irparams_t *save,
     DPRINTLN("Attempting WOWWEE decode");
     if (decodeWowwee(results, offset)) return true;
 #endif  // DECODE_WOWWEE
+#if DECODE_CARRIER_AC84
+    DPRINTLN("Attempting Carrier A/C 84-bit decode");
+    if (decodeCarrierAC84(results, offset)) return true;
+#endif  // DECODE_CARRIER_AC84
   // Typically new protocols are added above this line.
   }
 #if DECODE_HASH

src/IRrecv.h

@@ -583,6 +583,12 @@ class IRrecv {
                          const uint16_t nbits = kCarrierAc40Bits,
                          const bool strict = true);
 #endif  // DECODE_CARRIER_AC40
+#if DECODE_CARRIER_AC84
+  bool decodeCarrierAC84(decode_results *results,
+                         uint16_t offset = kStartOffset,
+                         const uint16_t nbits = kCarrierAc84Bits,
+                         const bool strict = true);
+#endif  // DECODE_CARRIER_AC84
 #if DECODE_CARRIER_AC64
   bool decodeCarrierAC64(decode_results *results,
                          uint16_t offset = kStartOffset,

src/IRremoteESP8266.h

@@ -938,6 +938,13 @@
 #define SEND_WOWWEE        _IR_ENABLE_DEFAULT_
 #endif  // SEND_WOWWEE
 
+#ifndef DECODE_CARRIER_AC84
+#define DECODE_CARRIER_AC84 _IR_ENABLE_DEFAULT_
+#endif  // DECODE_CARRIER_AC84
+#ifndef SEND_CARRIER_AC84
+#define SEND_CARRIER_AC84   _IR_ENABLE_DEFAULT_
+#endif  // SEND_CARRIER_AC84
+
 #if (DECODE_ARGO || DECODE_DAIKIN || DECODE_FUJITSU_AC || DECODE_GREE || \
      DECODE_KELVINATOR || DECODE_MITSUBISHI_AC || DECODE_TOSHIBA_AC || \
      DECODE_TROTEC || DECODE_HAIER_AC || DECODE_HITACHI_AC || \
@@ -956,6 +963,7 @@
      DECODE_KELON168 || DECODE_HITACHI_AC296 || DECODE_CARRIER_AC128 || \
      DECODE_DAIKIN200 || DECODE_HAIER_AC160 || DECODE_TCL96AC || \
      DECODE_BOSCH144 || DECODE_SANYO_AC152 || DECODE_DAIKIN312 || \
+     DECODE_CARRIER_AC84 || \
      false)
   // Add any DECODE to the above if it uses result->state (see kStateSizeMax)
   // you might also want to add the protocol to hasACState function
@@ -1120,8 +1128,9 @@ enum decode_type_t {
   DAIKIN312,
   GORENJE,
   WOWWEE,
+  CARRIER_AC84,  // 125
   // Add new entries before this one, and update it to point to the last entry.
-  kLastDecodeType = WOWWEE,
+  kLastDecodeType = CARRIER_AC84,
 };
 
 // Message lengths & required repeat values
@@ -1159,6 +1168,9 @@ const uint16_t kCarrierAc40Bits = 40;
 const uint16_t kCarrierAc40MinRepeat = 2;
 const uint16_t kCarrierAc64Bits = 64;
 const uint16_t kCarrierAc64MinRepeat = kNoRepeat;
+const uint16_t kCarrierAc84StateLength = 11;
+const uint16_t kCarrierAc84Bits = kCarrierAc84StateLength * 8 - 4;
+const uint16_t kCarrierAc84MinRepeat = kNoRepeat;
 const uint16_t kCarrierAc128StateLength = 16;
 const uint16_t kCarrierAc128Bits = kCarrierAc128StateLength * 8;
 const uint16_t kCarrierAc128MinRepeat = kNoRepeat;

src/IRsend.cpp

@@ -693,6 +693,8 @@ uint16_t IRsend::defaultBits(const decode_type_t protocol) {
       return kBosch144Bits;
     case CORONA_AC:
       return kCoronaAcBits;
+    case CARRIER_AC84:
+      return kCarrierAc84Bits;
     case CARRIER_AC128:
       return kCarrierAc128Bits;
     case DAIKIN:
@@ -1172,6 +1174,11 @@ bool IRsend::send(const decode_type_t type, const uint8_t *state,
       sendBosch144(state, nbytes);
       break;
 #endif  // SEND_BOSCH144
+#if SEND_CARRIER_AC84
+    case CARRIER_AC84:
+      sendCarrierAC84(state, nbytes);
+      break;
+#endif  // SEND_CARRIER_AC84
 #if SEND_CARRIER_AC128
     case CARRIER_AC128:
       sendCarrierAC128(state, nbytes);

src/IRsend.h

@@ -608,6 +608,11 @@ class IRsend {
   void sendCarrierAC64(uint64_t data, uint16_t nbits = kCarrierAc64Bits,
                        uint16_t repeat = kCarrierAc64MinRepeat);
 #endif
+#if SEND_CARRIER_AC84
+  void sendCarrierAC84(const uint8_t data[],
+                       const uint16_t nbytes = kCarrierAc84StateLength,
+                       const uint16_t repeat = kNoRepeat);
+#endif  // SEND_CARRIER_AC84
 #if SEND_CARRIER_AC128
   void sendCarrierAC128(const uint8_t data[],
                         uint16_t nbytes = kCarrierAc128StateLength,

src/IRtext.cpp

@@ -551,6 +551,8 @@ IRTEXT_CONST_BLOB_DECL(kAllProtocolNamesStr) {
             D_STR_GORENJE, D_STR_UNSUPPORTED) "\x0"
     COND(DECODE_WOWWEE || SEND_WOWWEE,
             D_STR_WOWWEE, D_STR_UNSUPPORTED) "\x0"
+    COND(DECODE_CARRIER_AC84 || SEND_CARRIER_AC84,
+            D_STR_CARRIER_AC84, D_STR_UNSUPPORTED) "\x0"
     ///< New protocol (macro) strings should be added just above this line.
     "\x0"  ///< This string requires double null termination.
 };

src/IRutils.cpp

@@ -6,6 +6,7 @@
 #endif
 
 #define __STDC_LIMIT_MACROS
+#include <math.h>
 #include <stdint.h>
 #include <string.h>
 #include <algorithm>
@@ -173,6 +174,7 @@ bool hasACState(const decode_type_t protocol) {
     case AMCOR:
     case ARGO:
     case BOSCH144:
+    case CARRIER_AC84:
     case CARRIER_AC128:
     case CORONA_AC:
     case DAIKIN:
@@ -304,7 +306,7 @@ String resultToSourceCode(const decode_results * const results) {
   if (results->decode_type != UNKNOWN) {
     if (hasState) {
 #if DECODE_AC
-      uint16_t nbytes = results->bits / 8;
+      uint16_t nbytes = ceil(static_cast<float>(results->bits) / 8.0);
       output += F("uint8_t state[");
       output += uint64ToString(nbytes);
       output += F("] = {");

src/ir_Carrier.cpp

@@ -46,6 +46,15 @@ const uint16_t kCarrierAc64OneSpace = 1736;
 const uint16_t kCarrierAc64ZeroSpace = 615;
 const uint32_t kCarrierAc64Gap = kDefaultMessageGap;  // A guess.
 
+//< @see: https://github.com/crankyoldgit/IRremoteESP8266/issues/1943#issue-1519570772
+const uint16_t kCarrierAc84HdrMark = 5850;
+const uint16_t kCarrierAc84Zero = 1175;
+const uint16_t kCarrierAc84One = 430;
+const uint16_t kCarrierAc84HdrSpace = kCarrierAc84Zero;
+const uint32_t kCarrierAc84Gap = kDefaultMessageGap;  // A guess.
+const uint8_t  kCarrierAc84ExtraBits = 4;
+const uint8_t  kCarrierAc84ExtraTolerance = 5;
+
 const uint16_t kCarrierAc128HdrMark = 4600;
 const uint16_t kCarrierAc128HdrSpace = 2600;
 const uint16_t kCarrierAc128Hdr2Mark = 9300;
@@ -645,3 +654,94 @@ bool IRrecv::decodeCarrierAC128(decode_results *results, uint16_t offset,
   return true;
 }
 #endif  // DECODE_CARRIER_AC128
+
+#if SEND_CARRIER_AC84
+/// Send a Carroer A/C 84 Bit formatted message.
+/// Status: BETA / Untested but probably works.
+/// @param[in] data The message to be sent.
+/// @param[in] nbytes The byte size of the message being sent.
+/// @param[in] repeat The number of times the command is to be repeated.
+void IRsend::sendCarrierAC84(const uint8_t data[], const uint16_t nbytes,
+                             const uint16_t repeat) {
+  // Protocol uses a constant bit time encoding.
+  for (uint16_t r = 0; r <= repeat; r++) {
+    if (nbytes) {
+      // The least significant `kCarrierAc84ExtraBits` bits of the first byte
+      sendGeneric(kCarrierAc84HdrMark, kCarrierAc84HdrSpace,  // Header
+                  kCarrierAc84Zero, kCarrierAc84One,  // Data
+                  kCarrierAc84One, kCarrierAc84Zero,
+                  0, 0,  // No footer
+                  GETBITS64(data[0], 0, kCarrierAc84ExtraBits),
+                  kCarrierAc84ExtraBits,
+                  38000, false, 0, 33);
+      // The rest of the data.
+      sendGeneric(0, 0,  // No Header
+                  kCarrierAc84Zero, kCarrierAc84One,  // Data
+                  kCarrierAc84One, kCarrierAc84Zero,
+                  kCarrierAc84Zero, kDefaultMessageGap,  // Footer
+                  data + 1, nbytes - 1, 38000, false, 0, 33);
+    }
+  }
+}
+#endif  // SEND_CARRIER_AC84
+
+#if DECODE_CARRIER_AC84
+/// Decode the supplied Carroer A/C 84 Bit formatted message.
+/// Status: STABLE / Confirmed Working.
+/// @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.
+/// @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::decodeCarrierAC84(decode_results *results, uint16_t offset,
+                                const uint16_t nbits, const bool strict) {
+  // Check if we have enough data to even possibly match.
+  if (results->rawlen < 2 * nbits + kHeader + kFooter - 1 + offset)
+    return false;  // Can't possibly be a valid Carrier message.
+  // Compliance check.
+  if (strict && nbits != kCarrierAc84Bits) return false;
+
+  // This decoder expects to decode an unusual number of bits. Check before we
+  // start.
+  if (nbits % 8 != kCarrierAc84ExtraBits) return false;
+
+  uint64_t data = 0;
+  uint16_t used = 0;
+
+  // Header + Data (kCarrierAc84ExtraBits only)
+  used = matchGenericConstBitTime(results->rawbuf + offset, &data,
+                                  results->rawlen - offset,
+                                  kCarrierAc84ExtraBits,
+                                  // Header (None)
+                                  kCarrierAc84HdrMark, kCarrierAc84HdrSpace,
+                                  // Data
+                                  kCarrierAc84Zero, kCarrierAc84One,
+                                  // No Footer
+                                  0, 0,
+                                  false,
+                                  _tolerance + kCarrierAc84ExtraTolerance,
+                                  kMarkExcess, false);
+  if (!used) return false;
+  // Stuff the captured data so far into the first byte of the state.
+  *results->state = data;
+  offset += used;
+  // Capture the rest of the data as normal as we should be on a byte boundary.
+  // Data + Footer
+  if (!matchGeneric(results->rawbuf + offset, results->state + 1,
+                    results->rawlen - offset, nbits - kCarrierAc84ExtraBits,
+                    0, 0,  // No Header expected.
+                    kCarrierAc84Zero, kCarrierAc84One,  // Data
+                    kCarrierAc84One, kCarrierAc84Zero,
+                    kCarrierAc84Zero, kDefaultMessageGap, true,
+                    _tolerance + kCarrierAc84ExtraTolerance,
+                    kMarkExcess, false)) return false;
+
+  // Success
+  results->decode_type = decode_type_t::CARRIER_AC84;
+  results->bits = nbits;
+  results->repeat = false;
+  return true;
+}
+#endif  // DECODE_CARRIER_AC84

src/ir_Carrier.h

@@ -4,6 +4,7 @@
 /// @see https://github.com/crankyoldgit/IRremoteESP8266/issues/1127
 /// @see https://docs.google.com/spreadsheets/d/1EZy78L0cn1KDIX1aKq2biptejFqCjD5HO3tLiRvXf48/edit#gid=0
 /// @see https://github.com/crankyoldgit/IRremoteESP8266/issues/1797
+/// @see https://github.com/crankyoldgit/IRremoteESP8266/issues/1943
 
 // Supports:
 //   Brand: Carrier/Surrey,  Model: 42QG5A55970 remote
@@ -13,6 +14,8 @@
 //   Brand: Carrier/Surrey,  Model: 619EGX0220E0 A/C
 //   Brand: Carrier/Surrey,  Model: 53NGK009/012 Inverter
 //   Brand: Carrier,  Model: 40GKX0E2006 remote (CARRIER_AC128)
+//   Brand: Carrier,  Model: 3021203 RR03-S-Remote (CARRIER_AC84)
+//   Brand: Carrier,  Model: 342WM100CT A/C (CARRIER_AC84)
 
 #ifndef IR_CARRIER_H_
 #define IR_CARRIER_H_

src/locale/defaults.h

@@ -769,6 +769,9 @@ D_STR_INDIRECT " " D_STR_MODE
 #ifndef D_STR_CARRIER_AC64
 #define D_STR_CARRIER_AC64 D_STR_CARRIER_AC "64"
 #endif  // D_STR_CARRIER_AC64
+#ifndef D_STR_CARRIER_AC84
+#define D_STR_CARRIER_AC84 D_STR_CARRIER_AC "84"
+#endif  // D_STR_CARRIER_AC84
 #ifndef D_STR_CARRIER_AC128
 #define D_STR_CARRIER_AC128 D_STR_CARRIER_AC "128"
 #endif  // D_STR_CARRIER_AC128