Add support for optional IRHVAC Midea/Komeco protocol

Add support for optional IRHVAC Midea/Komeco protocol (#3227)

sonoff/_changelog.ino

@@ -4,6 +4,7 @@
  * Add support for a buzzer
  * Add command SetOption67 0/1 to disable or enable a buzzer as used in iFan03
  * Add support IRSend long press ('repeat' feature from IRRemoteESP8266) (#6074)
+ * Add support for optional IRHVAC Midea/Komeco protocol (#3227)
  *
  * 6.6.0.1 20190708
  * Fix Domoticz battery level set to 100 if define USE_ADC_VCC is not used (#6033)

sonoff/my_user_config.h

@@ -449,6 +449,7 @@
     #define USE_IR_HVAC_MITSUBISHI               // Support IRhvac Mitsubischi protocol
     #define USE_IR_HVAC_LG                       // Support IRhvac LG protocol
     #define USE_IR_HVAC_FUJITSU                  // Support IRhvac Fujitsu protocol
+//    #define USE_IR_HVAC_MIDEA                    // Support IRhvac Midea/Komeco protocol
 
   #define USE_IR_RECEIVE                         // Support for IR receiver (+7k2 code, 264 iram)
     #define IR_RCV_BUFFER_SIZE      100          // Max number of packets allowed in capture buffer (default 100 (*2 bytes ram))

sonoff/xdrv_05_irremote.ino

@@ -40,21 +40,10 @@ const char kIrRemoteProtocols[] PROGMEM =
 #include <ir_Mitsubishi.h>
 #include <ir_Fujitsu.h>
 
-enum IrHvacVendors { VNDR_TOSHIBA, VNDR_MITSUBISHI, VNDR_LG, VNDR_FUJITSU };
+enum IrHvacVendors {
-const char kIrHvacVendors[] PROGMEM = "Toshiba|Mitsubishi|LG|Fujitsu" ;
+  VNDR_TOSHIBA, VNDR_MITSUBISHI, VNDR_LG, VNDR_FUJITSU, VNDR_MIDEA };
-
+const char kIrHvacVendors[] PROGMEM =
-// HVAC TOSHIBA_
+  "Toshiba|Mitsubishi|LG|Fujitsu|Midea" ;
-const uint16_t HVAC_TOSHIBA_HDR_MARK = 4400;
-const uint16_t HVAC_TOSHIBA_HDR_SPACE = 4300;
-const uint16_t HVAC_TOSHIBA_BIT_MARK = 543;
-const uint16_t HVAC_TOSHIBA_ONE_SPACE = 1623;
-const uint16_t HVAC_MISTUBISHI_ZERO_SPACE = 472;
-const uint16_t HVAC_TOSHIBA_RPT_MARK = 440;
-const uint16_t HVAC_TOSHIBA_RPT_SPACE = 7048; // Above original iremote limit
-const uint8_t HVAC_TOSHIBA_DATALEN = 9;
-
-// HVAC LG
-const uint8_t HVAC_LG_DATALEN = 7;
 
 IRMitsubishiAC *mitsubir = nullptr;
 
@@ -212,6 +201,15 @@ void IrReceiveCheck(void)
       TOSHIBA
 ********************/
 
+const uint16_t HVAC_TOSHIBA_HDR_MARK = 4400;
+const uint16_t HVAC_TOSHIBA_HDR_SPACE = 4300;
+const uint16_t HVAC_TOSHIBA_BIT_MARK = 543;
+const uint16_t HVAC_TOSHIBA_ONE_SPACE = 1623;
+const uint16_t HVAC_MISTUBISHI_ZERO_SPACE = 472;
+const uint16_t HVAC_TOSHIBA_RPT_MARK = 440;
+const uint16_t HVAC_TOSHIBA_RPT_SPACE = 7048; // Above original iremote limit
+const uint8_t HVAC_TOSHIBA_DATALEN = 9;
+
 uint8_t IrHvacToshiba(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC_Power, int HVAC_Temp)
 {
   uint16_t rawdata[2 + 2 * 8 * HVAC_TOSHIBA_DATALEN + 2];
@@ -303,6 +301,135 @@ uint8_t IrHvacToshiba(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC
 }
 #endif  // USE_IR_HVAC_TOSHIBA
 
+#ifdef USE_IR_HVAC_MIDEA
+/*******************
+     MIDEA / KOMECO
+********************/
+
+// http://veillard.com/embedded/midea.html
+// https://github.com/sheinz/esp-midea-ir/blob/master/midea-ir.c
+
+const uint16_t HVAC_MIDEA_HDR_MARK = 4420;    // 8T high
+const uint16_t HVAC_MIDEA_HDR_SPACE = 4420;   // 8T low
+const uint16_t HVAC_MIDEA_BIT_MARK = 553;     // 1T
+const uint16_t HVAC_MIDEA_ONE_SPACE = 1660;   // 3T low
+const uint16_t HVAC_MIDEA_ZERO_SPACE = 553;   // 1T high
+const uint16_t HVAC_MIDEA_RPT_MARK = 553;     // 1T
+const uint16_t HVAC_MIDEA_RPT_SPACE = 5530;   // 10T
+const uint8_t HVAC_MIDEA_DATALEN = 3;
+
+uint8_t IrHvacMidea(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC_Power, int HVAC_Temp)
+{
+  uint16_t rawdata[2 + 2 * 2 * 8 * HVAC_MIDEA_DATALEN + 2]; // START + 2* (2 * 3 BYTES) + STOP
+  uint8_t data[HVAC_MIDEA_DATALEN] = {0xB2, 0x00, 0x00};
+
+  char *p;
+  uint8_t mode;
+
+  if (!HVAC_Power) { // Turn OFF HVAC
+    data[1] = 0x7B;
+    data[2] = 0xE0;
+  } else {
+    // FAN
+    if (HVAC_FanMode == nullptr) {
+      p = (char*)kFanSpeedOptions; // default auto
+    }
+    else {
+      p = (char*)HVAC_FanMode;
+    }
+
+    switch(p[0]) {
+      case '1': data[1] = 0xBF; break; // off
+      case '2': data[1] = 0x9F; break; // low
+      case '3': data[1] = 0x5F; break; // med
+      case '4': data[1] = 0x3F; break; // high
+      case '5': data[1] = 0x1F; break; // auto
+      case 'A': data[1] = 0x1F; break; // auto
+      default: return IE_SYNTAX_IRHVAC;
+    }
+
+    // TEMPERATURE
+    uint8_t Temp;
+    if (HVAC_Temp > 30) {
+      Temp = 30;
+    }
+    else if (HVAC_Temp < 17) {
+      Temp = 17;
+    }
+    else {
+      Temp = HVAC_Temp-17;
+    }
+    if (10 == Temp) { // Temp is encoded as gray code; except 27 and 28. Go figure...
+      data[2] = 0x90;
+    } else if (11 == Temp) {
+      data[2] = 0x80;
+    } else {
+      Temp = (Temp >> 1) ^Temp;
+      data[2] = (Temp << 4);
+    }
+
+    // MODE
+    if (HVAC_Mode == nullptr) {
+      p = (char*)kHvacModeOptions + 3; // default to auto
+    }
+    else {
+      p = (char*)HVAC_Mode;
+    }
+    switch(toupper(p[0])) {
+      case 'D': data[2] = 0xE4; break; // for fan Temp must be 0XE
+      case 'C': data[2] = 0x0 | data[2]; break;
+      case 'A': data[2] = 0x8 | data[2]; data[1] = 0x1F; break; // for auto Fan must be 0x1
+      case 'H': data[2] = 0xC | data[2]; break;
+      default: return IE_SYNTAX_IRHVAC;
+    }
+  }
+
+  int i = 0;
+  uint8_t mask = 1;
+
+  //header
+  rawdata[i++] = HVAC_MIDEA_HDR_MARK;
+  rawdata[i++] = HVAC_MIDEA_HDR_SPACE;
+
+  //data
+  for (int b = 0; b < HVAC_MIDEA_DATALEN; b++) { // Send value
+    for (mask = B10000000; mask > 0; mask >>= 1) {
+      if (data[b] & mask) { // Bit ONE
+        rawdata[i++] = HVAC_MIDEA_BIT_MARK;
+        rawdata[i++] = HVAC_MIDEA_ONE_SPACE;
+      }
+      else { // Bit ZERO
+        rawdata[i++] = HVAC_MIDEA_BIT_MARK;
+        rawdata[i++] = HVAC_MIDEA_ZERO_SPACE;
+      }
+    }
+    for (mask = B10000000; mask > 0; mask >>= 1) { // Send complement
+      if (data[b] & mask) { // Bit ONE
+        rawdata[i++] = HVAC_MIDEA_BIT_MARK;
+        rawdata[i++] = HVAC_MIDEA_ZERO_SPACE;
+      }
+      else { // Bit ZERO
+        rawdata[i++] = HVAC_MIDEA_BIT_MARK;
+        rawdata[i++] = HVAC_MIDEA_ONE_SPACE;
+      }
+    }
+
+  }
+
+  //trailer
+  rawdata[i++] = HVAC_MIDEA_RPT_MARK;
+  rawdata[i++] = HVAC_MIDEA_RPT_SPACE;
+
+//  noInterrupts();
+  // this takes ~180 ms :
+  irsend->sendRaw(rawdata, i, 38);
+  irsend->sendRaw(rawdata, i, 38);
+//  interrupts();
+
+  return IE_NO_ERROR;
+}
+#endif  // USE_IR_HVAC_MIDEA
+
 #ifdef USE_IR_HVAC_MITSUBISHI
 /*******************
      MITSUBISHI
@@ -357,6 +484,8 @@ uint8_t IrHvacMitsubishi(const char *HVAC_Mode, const char *HVAC_FanMode, bool H
         LG
 ********************/
 
+const uint8_t HVAC_LG_DATALEN = 7;
+
 uint8_t IrHvacLG(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC_Power, int HVAC_Temp)
 {
   uint32_t LG_Code;
@@ -822,6 +951,10 @@ bool IrSendCommand(void)
 #ifdef USE_IR_HVAC_FUJITSU
             case VNDR_FUJITSU:
               error = IrHvacFujitsu(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp); break;
+#endif
+#ifdef USE_IR_HVAC_MIDEA
+            case VNDR_MIDEA:
+              error = IrHvacMidea(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp); break;
 #endif
             default:
               error = IE_SYNTAX_IRHVAC;