[midea] [midea_ir] Add Fahrenheit support to follow me ir data class

Bit 5 of idx 2 is used for Fahrenheit indication. There is no known actual max value for temp in Fahrenheit. see 9bdf8abcb4/src/ir_Midea.h (L117)

Added min and max values for more readable code used for value clamping.

esphome/components/midea/ir_transmitter.h

@@ -3,6 +3,7 @@
 #ifdef USE_ARDUINO
 #ifdef USE_REMOTE_TRANSMITTER
 #include "esphome/components/remote_base/midea_protocol.h"
+#include <algorithm>
 
 namespace esphome {
 namespace midea {
@@ -16,22 +17,52 @@ class IrFollowMeData : public IrData {
   IrFollowMeData() : IrData({MIDEA_TYPE_FOLLOW_ME, 0x82, 0x48, 0x7F, 0x1F}) {}
   // Copy from Base
   IrFollowMeData(const IrData &data) : IrData(data) {}
-  // Direct from temperature and beeper values
+  // Direct from temperature in celsius and beeper values
   IrFollowMeData(uint8_t temp, bool beeper = false) : IrFollowMeData() {
+    this->set_fahrenheit(false);
+    this->set_temp(temp);
+    this->set_beeper(beeper);
+  }
+  // Direct from temperature, fahrenheit and beeper values
+  IrFollowMeData(uint8_t temp, bool fahrenheit, bool beeper) : IrFollowMeData() {
+    this->set_fahrenheit(fahrenheit);
     this->set_temp(temp);
     this->set_beeper(beeper);
   }
 
   /* TEMPERATURE */
-  uint8_t temp() const { return this->get_value_(4) - 1; }
+  uint8_t temp() const { 
-  void set_temp(uint8_t val) { this->set_value_(4, std::min(MAX_TEMP, val) + 1); }
+    if (this->fahrenheit()) {
+      return this->get_value_(4) + 31;
+    }
+    return this->get_value_(4) - 1;
+  }
+  void set_temp(uint8_t val) {
+    if (this->fahrenheit()) {
+      // see https://github.com/esphome/feature-requests/issues/1627#issuecomment-1365639966
+      val = std::clamp<uint8_t>(val, MIN_TEMP_F, MAX_TEMP_F) - 31;
+    } else {
+      val = std::clamp<uint8_t>(val, MIN_TEMP_C, MAX_TEMP_C) + 1;
+    }
+    this->set_value_(4, val); 
+  }
 
   /* BEEPER */
   bool beeper() const { return this->get_value_(3, 128); }
   void set_beeper(bool val) { this->set_mask_(3, val, 128); }
 
+  /* FAHRENHEIT */
+  bool fahrenheit() const { return this->get_value_(2, 32); }
+  void set_fahrenheit(bool val) { this->set_mask_(2, val, 32); }
+
  protected:
-  static const uint8_t MAX_TEMP = 37;
+  static const uint8_t MIN_TEMP_C = 0;
+  static const uint8_t MAX_TEMP_C = 37;
+
+  // see https://github.com/crankyoldgit/IRremoteESP8266/blob/9bdf8abcb465268c5409db99dc83a26df64c7445/src/ir_Midea.h#L116
+  static const uint8_t MIN_TEMP_F = 32;
+  // see https://github.com/crankyoldgit/IRremoteESP8266/blob/9bdf8abcb465268c5409db99dc83a26df64c7445/src/ir_Midea.h#L117
+  static const uint8_t MAX_TEMP_F = 99;
 };
 
 class IrSpecialData : public IrData {

esphome/components/midea_ir/midea_data.h

@@ -2,6 +2,7 @@
 
 #include "esphome/components/remote_base/midea_protocol.h"
 #include "esphome/components/climate/climate_mode.h"
+#include <algorithm>
 
 namespace esphome {
 namespace midea_ir {
@@ -62,22 +63,52 @@ class FollowMeData : public MideaData {
   FollowMeData() : MideaData({MIDEA_TYPE_FOLLOW_ME, 0x82, 0x48, 0x7F, 0x1F}) {}
   // Copy from Base
   FollowMeData(const MideaData &data) : MideaData(data) {}
-  // Direct from temperature and beeper values
+  // Direct from temperature in celsius and beeper values
   FollowMeData(uint8_t temp, bool beeper = false) : FollowMeData() {
+    this->set_fahrenheit(false);
+    this->set_temp(temp);
+    this->set_beeper(beeper);
+  }
+  // Direct from temperature, fahrenheit and beeper values
+  FollowMeData(uint8_t temp, bool fahrenheit, bool beeper) : FollowMeData() {
+    this->set_fahrenheit(fahrenheit);
     this->set_temp(temp);
     this->set_beeper(beeper);
   }
 
   /* TEMPERATURE */
-  uint8_t temp() const { return this->get_value_(4) - 1; }
+  uint8_t temp() const { 
-  void set_temp(uint8_t val) { this->set_value_(4, std::min(MAX_TEMP, val) + 1); }
+    if (this->fahrenheit()) {
+      return this->get_value_(4) + 31;
+    }
+    return this->get_value_(4) - 1;
+  }
+  void set_temp(uint8_t val) {
+    if (this->fahrenheit()) {
+      // see https://github.com/esphome/feature-requests/issues/1627#issuecomment-1365639966
+      val = std::clamp<uint8_t>(val, MIN_TEMP_F, MAX_TEMP_F) - 31;
+    } else {
+      val = std::clamp<uint8_t>(val, MIN_TEMP_C, MAX_TEMP_C) + 1;
+    }
+    this->set_value_(4, val); 
+  }
 
   /* BEEPER */
   bool beeper() const { return this->get_value_(3, 128); }
   void set_beeper(bool value) { this->set_mask_(3, value, 128); }
 
+  /* FAHRENHEIT */
+  bool fahrenheit() const { return this->get_value_(2, 32); }
+  void set_fahrenheit(bool val) { this->set_mask_(2, val, 32); }
+
  protected:
-  static const uint8_t MAX_TEMP = 37;
+  static const uint8_t MIN_TEMP_C = 0;
+  static const uint8_t MAX_TEMP_C = 37;
+
+  // see https://github.com/crankyoldgit/IRremoteESP8266/blob/9bdf8abcb465268c5409db99dc83a26df64c7445/src/ir_Midea.h#L116
+  static const uint8_t MIN_TEMP_F = 32;
+  // see https://github.com/crankyoldgit/IRremoteESP8266/blob/9bdf8abcb465268c5409db99dc83a26df64c7445/src/ir_Midea.h#L117
+  static const uint8_t MAX_TEMP_F = 99;
 };
 
 class SpecialData : public MideaData {