add IR support to LG wall HVAC systems

lib/IRremoteESP8266-2.2.1.02/src/IRremoteESP8266.h

@@ -171,8 +171,8 @@
 #define DECODE_AIWA_RC_T501  false
 #define SEND_AIWA_RC_T501    false
 
-#define DECODE_LG            false
+#define DECODE_LG            true
-#define SEND_LG              false
+#define SEND_LG              true
 
 #define DECODE_SANYO         false
 #define SEND_SANYO           false

sonoff/my_user_config.h

@@ -366,7 +366,7 @@
 
 // -- Low level interface devices -----------------
 #define USE_IR_REMOTE                            // Send IR remote commands using library IRremoteESP8266 and ArduinoJson (+4k code, 0k3 mem, 48 iram)
-//  #define USE_IR_HVAC                            // Support for HVAC system using IR (+2k code)
+  #define USE_IR_HVAC                            // Support for HVAC system using IR (+2k code)
   #define USE_IR_RECEIVE                         // Support for IR receiver (+5k5 code, 264 iram)
 
 #define USE_WS2812                               // WS2812 Led string using library NeoPixelBus (+5k code, +1k mem, 232 iram) - Disable by //

sonoff/xdrv_05_irremote.ino

@@ -1,18 +1,14 @@
 /*
   xdrv_05_irremote.ino - infra red support for Sonoff-Tasmota
-
   Copyright (C) 2018  Heiko Krupp, Lazar Obradovic and Theo Arends
-
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
-
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
-
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
@@ -44,6 +40,9 @@ const char kIrRemoteProtocols[] PROGMEM =
 #define HVAC_TOSHIBA_RPT_SPACE 7048 // Above original iremote limit
 #define HVAC_TOSHIBA_DATALEN 9
 
+// HVAC LG
+#define HVAC_LG_DATALEN 7
+
 IRMitsubishiAC *mitsubir = NULL;
 
 const char kFanSpeedOptions[] = "A12345S";
@@ -137,6 +136,10 @@ void IrReceiveCheck(void)
  * IR Heating, Ventilation and Air Conditioning using IRMitsubishiAC library
 \*********************************************************************************************/
 
+/******************* 
+      TOSHIBA
+********************/
+
 boolean IrHvacToshiba(const char *HVAC_Mode, const char *HVAC_FanMode, boolean HVAC_Power, int HVAC_Temp)
 {
   uint16_t rawdata[2 + 2 * 8 * HVAC_TOSHIBA_DATALEN + 2];
@@ -226,6 +229,11 @@ boolean IrHvacToshiba(const char *HVAC_Mode, const char *HVAC_FanMode, boolean H
   return false;
 }
 
+
+/******************* 
+     MITSUBISHI
+********************/
+
 boolean IrHvacMitsubishi(const char *HVAC_Mode, const char *HVAC_FanMode, boolean HVAC_Power, int HVAC_Temp)
 {
   char *p;
@@ -269,6 +277,124 @@ boolean IrHvacMitsubishi(const char *HVAC_Mode, const char *HVAC_FanMode, boolea
 
   return false;
 }
+
+
+/******************* 
+        LG
+********************/
+
+boolean IrHvacLG(const char *HVAC_Mode, const char *HVAC_FanMode, boolean HVAC_Power, int HVAC_Temp)
+{
+  uint32_t LG_Code;
+  byte data[HVAC_LG_DATALEN];
+  static boolean hvacOn = false;
+  char *p;
+  uint8_t mode;
+  byte Temp;
+
+  // Constant data
+  data[0] = 0x08;
+  data[1] = 0x08;
+  data[2] = 0x00;
+
+  if (!HVAC_Power) {
+    data[2] = (byte)0x0C; // Turn OFF HVAC, code 0x88C0051
+    data[3] = (byte)0x00; 
+    data[4] = (byte)0x00; 
+    data[5] = (byte)0x05; 
+    data[6] = (byte)0x01; 
+    hvacOn = false;
+  }
+
+  else {
+    
+    // Set code for HVAC Mode - data[3]
+    if (HVAC_Mode == NULL) {
+      p = (char *)kHvacModeOptions; // default HVAC_HOT
+    }
+    else {
+      p = strchr(kHvacModeOptions, toupper(HVAC_Mode[0]));  
+    }
+    if (!p) {
+      return true;
+    }
+    mode = (p - kHvacModeOptions) ^ 0x03; // HOT = 0x03, DRY = 0x02, COOL = 0x01, AUTO = 0x00
+    switch (mode) {
+      case 0: // AUTO
+        data[3] = 11;
+        break;
+      case 1: // COOL
+        data[3] = 8;
+        break;
+      case 2: // DRY
+        data[3] = 9;
+        break;
+      case 3: // HOT
+        data[3] = 12;
+        break; 
+    }
+    if (!hvacOn) {
+      data[3] = data[3] & 7; // reset bit3
+      hvacOn = true;
+    }
+  
+    snprintf_P(log_data, sizeof(log_data), PSTR("IRHVAC: HvacMode %s, ModeVal %d, Code %d"), p, mode, data[3]);
+    AddLog(LOG_LEVEL_DEBUG);
+    
+    // Set code for HVAC temperature - data[4]
+    if (HVAC_Temp > 30) {
+      Temp = 30;
+    }
+    else if (HVAC_Temp < 18) {
+      Temp = 18;
+    }
+    else {
+      Temp = HVAC_Temp;
+    }
+    data[4] = (byte)(Temp - 15);
+
+    // Set code for HVAC fan mode - data[5]
+    if (HVAC_FanMode == NULL) {
+      p = (char *)kFanSpeedOptions; // default FAN_SPEED_AUTO
+    }
+    else {
+      p = strchr(kFanSpeedOptions, toupper(HVAC_FanMode[0]));
+    }
+    if (!p) {
+      return true;
+    }
+    mode = p - kFanSpeedOptions;
+    if ((mode == 0) || (mode > 3)) {
+      data[5] = 5; // Auto = 0x05
+    }
+    else {
+      data[5] = (mode * 2) - 2; // Low = 0x00, Mid = 0x02, High = 0x04
+    }
+    
+    snprintf_P(log_data, sizeof(log_data), PSTR("IRHVAC: FanMode %s, ModeVal %d, Code %d"), p, mode, data[5]);
+    AddLog(LOG_LEVEL_DEBUG);
+
+    // Set CRC code - data[6]
+    data[6] = (data[3] + data[4] + data[5]) & 0x0f; // CRC
+
+  }    
+  // Build LG IR code
+  LG_Code = data[0] << 4;
+  for (int i = 1; i < 6; i++) {
+    LG_Code = (LG_Code + data[i]) << 4;
+  }
+  LG_Code = LG_Code + data[6];
+
+  snprintf_P(log_data, sizeof(log_data), PSTR("IRHVAC: LG_Code %d"), LG_Code);
+  AddLog(LOG_LEVEL_DEBUG);
+
+  // Send LG IR Code 
+  noInterrupts();
+  irsend->sendLG(LG_Code, 28);
+  interrupts();
+  
+  return false;
+}
 #endif // USE_IR_HVAC
 
 /*********************************************************************************************\
@@ -279,7 +405,6 @@ boolean IrHvacMitsubishi(const char *HVAC_Mode, const char *HVAC_FanMode, boolea
  * ArduinoJSON entry used to calculate jsonBuf: JSON_OBJECT_SIZE(3) + 40 = 96
  IRsend:
  { "protocol": "SAMSUNG", "bits": 32, "data": 551502015 }
-
  IRhvac:
  { "Vendor": "<Toshiba|Mitsubishi>", "Power": <0|1>, "Mode": "<Hot|Cold|Dry|Auto>", "FanSpeed": "<1|2|3|4|5|Auto|Silence>", "Temp": <17..30> }
 */
@@ -381,6 +506,9 @@ boolean IrSendCommand(void)
         else if (!strcasecmp_P(HVAC_Vendor, PSTR("MITSUBISHI"))) {
           error = IrHvacMitsubishi(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp);
         }
+        else if (!strcasecmp_P(HVAC_Vendor, PSTR("LG"))) {
+          error = IrHvacLG(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp);
+        }
         else {
           error = true;
         }