Add eye timer field for Daikin312

src/ir_Daikin.cpp

@@ -3878,9 +3878,15 @@ void IRDaikin312::stateReset(void) {
   _.raw[2] = 0x27;
   _.raw[3] = 0x00;
   _.raw[4] = 0x02;
+  // CurrentTime lower byte (placeholder; set via setCurrentTime)
   _.raw[5] = 0x58;
+  // CurrentTime upper nibble + Power2 (Power2 set by setPower)
   _.raw[6] = 0x64;
-  _.raw[7] = 0x58;
+  // raw[7] bits 6-7 = EyeTimer (0x00=off, 0x40=1hr, 0x80=3hr).
+  _.raw[7] = 0x00;
+  // raw[8] bit5 (0x20) is always set by a ARC472A43 remote (meaning unknown).
+  //   AC seems to accept commands regardless of the value set here.
+  //   Value from the original PR (#2246) is kept.
   _.raw[8] = 0x64;
   _.raw[9] = 0x06;
   _.raw[10] = 0x00;
@@ -4204,6 +4210,21 @@ void IRDaikin312::setEye(bool on) { _.Eye = on; }
 /// @return true, the setting is on. false, the setting is off.
 bool IRDaikin312::getEye(void) const { return _.Eye; }
 
+/// Set the Eye (Sensor) timer duration of the A/C.
+/// @param[in] duration kDaikin312EyeTimerOff, kDaikin312EyeTimer1Hr, or
+///   kDaikin312EyeTimer3Hr.
+void IRDaikin312::setEyeTimer(const uint8_t duration) {
+  if (duration > kDaikin312EyeTimer3Hr)
+    _.EyeTimer = kDaikin312EyeTimerOff;
+  else
+    _.EyeTimer = duration;
+}
+
+/// Get the Eye (Sensor) timer duration of the A/C.
+/// @return kDaikin312EyeTimerOff, kDaikin312EyeTimer1Hr, or
+///   kDaikin312EyeTimer3Hr.
+uint8_t IRDaikin312::getEyeTimer(void) const { return _.EyeTimer; }
+
 /// Set the Economy mode of the A/C.
 /// @param[in] on true, the setting is on. false, the setting is off.
 void IRDaikin312::setEcono(bool on) { _.Econo = on; }

src/ir_Daikin.h

@@ -709,16 +709,17 @@ union Daikin312Protocol{
     uint64_t CurrentTime  :12;
     uint64_t              :3;
     uint64_t Power2       :1;
-    // Byte 7
-    uint64_t              :4;
-    uint64_t              :2;  // Light moved to byte 12
-    uint64_t Beep         :2;
+    // Byte 7: Eye timer duration (bits 6–7); remaining bits unused.
+    //   Observed remote encodings: 0x00 = off, 0x40 = 1 hr, 0x80 = 3 hr.
+    uint64_t              :6;
+    uint64_t EyeTimer     :2;
     // Byte 8
     uint64_t FreshAir     :1;
     uint64_t              :2;
     uint64_t Mold         :1;
-    uint64_t              :2;
-    uint64_t              :1;
+    uint64_t              :1;  // HeatHigh indicator
+    uint64_t              :1;  // always 1 (0x20)
+    uint64_t              :1;  // unknown; always 0 in observed signals
     uint64_t FreshAirHigh :1;
     // Byte 9~10
     //   Byte  9: Always 0x06
@@ -728,7 +729,8 @@ union Daikin312Protocol{
     uint64_t              :8;
     // Byte 12
     uint64_t Light        :2;
-    uint64_t              :6;
+    uint64_t Beep         :2;
+    uint64_t              :4;
 
     // Byte 13
     uint64_t          :8;
@@ -861,6 +863,11 @@ const uint8_t kDaikin312HumidityAuto       = 0xFF;
 // Min temp (in C) when in Cool mode.
 const uint8_t kDaikin312MinCoolTemp = 18;
 
+// Eye timer duration (byte 7, bits 6-7). @see setEyeTimer()
+const uint8_t kDaikin312EyeTimerOff = 0;  // 0x00
+const uint8_t kDaikin312EyeTimer1Hr = 1;  // 0x40
+const uint8_t kDaikin312EyeTimer3Hr = 2;  // 0x80
+
 /// Class for handling detailed Daikin 312-bit A/C messages.
 /// @note Code by crankyoldgit, Reverse engineering analysis by AntonWert
 class IRDaikin312 {
@@ -901,6 +908,8 @@ class IRDaikin312 {
   bool getEye(void) const;
   void setEyeAuto(const bool on);
   bool getEyeAuto(void) const;
+  void setEyeTimer(const uint8_t duration);
+  uint8_t getEyeTimer(void) const;
   void setPurify(const bool on);
   bool getPurify(void) const;
   void setMold(const bool on);

test/ir_Daikin_test.cpp

@@ -4291,6 +4291,24 @@ TEST(TestDaikin312Class, EyeSetting) {
   ASSERT_TRUE(ac.getEyeAuto());
 }
 
+TEST(TestDaikin312Class, EyeTimerSetting) {
+  IRDaikin312 ac(kGpioUnused);
+  ac.begin();
+
+  ac.setEyeTimer(kDaikin312EyeTimerOff);
+  EXPECT_EQ(kDaikin312EyeTimerOff, ac.getEyeTimer());
+
+  ac.setEyeTimer(kDaikin312EyeTimer1Hr);
+  EXPECT_EQ(kDaikin312EyeTimer1Hr, ac.getEyeTimer());
+
+  ac.setEyeTimer(kDaikin312EyeTimer3Hr);
+  EXPECT_EQ(kDaikin312EyeTimer3Hr, ac.getEyeTimer());
+
+  // Out-of-range values fall back to Off.
+  ac.setEyeTimer(3);
+  EXPECT_EQ(kDaikin312EyeTimerOff, ac.getEyeTimer());
+}
+
 TEST(TestDaikin312Class, PurifySetting) {
   IRDaikin312 ac(kGpioUnused);
   ac.begin();