[midea] Add Fahrenheit support to midea_ac.follow_me action (#7762)

esphome/components/midea/ac_automations.h

@@ -19,10 +19,12 @@ template<typename... Ts> class MideaActionBase : public Action<Ts...> {
 
 template<typename... Ts> class FollowMeAction : public MideaActionBase<Ts...> {
   TEMPLATABLE_VALUE(float, temperature)
+  TEMPLATABLE_VALUE(bool, use_fahrenheit)
   TEMPLATABLE_VALUE(bool, beeper)
 
   void play(Ts... x) override {
-    this->parent_->do_follow_me(this->temperature_.value(x...), this->beeper_.value(x...));
+    this->parent_->do_follow_me(this->temperature_.value(x...), this->use_fahrenheit_.value(x...),
+                                this->beeper_.value(x...));
   }
 };
 

esphome/components/midea/air_conditioner.cpp

@@ -1,6 +1,7 @@
 #ifdef USE_ARDUINO
 
 #include "esphome/core/log.h"
+#include "esphome/core/helpers.h"
 #include "air_conditioner.h"
 #include "ac_adapter.h"
 #include <cmath>
@@ -121,7 +122,7 @@ void AirConditioner::dump_config() {
 
 /* ACTIONS */
 
-void AirConditioner::do_follow_me(float temperature, bool beeper) {
+void AirConditioner::do_follow_me(float temperature, bool use_fahrenheit, bool beeper) {
 #ifdef USE_REMOTE_TRANSMITTER
   // Check if temperature is finite (not NaN or infinite)
   if (!std::isfinite(temperature)) {
@@ -131,13 +132,14 @@ void AirConditioner::do_follow_me(float temperature, bool beeper) {
 
   // Round and convert temperature to long, then clamp and convert it to uint8_t
   uint8_t temp_uint8 =
-      static_cast<uint8_t>(std::max(0L, std::min(static_cast<long>(UINT8_MAX), std::lroundf(temperature))));
+      static_cast<uint8_t>(esphome::clamp<long>(std::lroundf(temperature), 0L, static_cast<long>(UINT8_MAX)));
 
-  ESP_LOGD(Constants::TAG, "Follow me action called with temperature: %f °C, rounded to: %u °C", temperature,
-           temp_uint8);
+  char temp_symbol = use_fahrenheit ? 'F' : 'C';
+  ESP_LOGD(Constants::TAG, "Follow me action called with temperature: %.5f °%c, rounded to: %u °%c", temperature,
+           temp_symbol, temp_uint8, temp_symbol);
 
   // Create and transmit the data
-  IrFollowMeData data(temp_uint8, beeper);
+  IrFollowMeData data(temp_uint8, use_fahrenheit, beeper);
   this->transmitter_.transmit(data);
 #else
   ESP_LOGW(Constants::TAG, "Action needs remote_transmitter component");

esphome/components/midea/air_conditioner.h

@@ -32,7 +32,7 @@ class AirConditioner : public ApplianceBase<dudanov::midea::ac::AirConditioner>,
   /* ### ACTIONS ### */
   /* ############### */
 
-  void do_follow_me(float temperature, bool beeper = false);
+  void do_follow_me(float temperature, bool use_fahrenheit, bool beeper = false);
   void do_display_toggle();
   void do_swing_step();
   void do_beeper_on() { this->set_beeper_feedback(true); }

esphome/components/midea/climate.py

@@ -18,6 +18,7 @@ from esphome.const import (
     CONF_SUPPORTED_SWING_MODES,
     CONF_TIMEOUT,
     CONF_TEMPERATURE,
+    CONF_USE_FAHRENHEIT,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_TEMPERATURE,
     DEVICE_CLASS_HUMIDITY,
@@ -172,11 +173,10 @@ MIDEA_ACTION_BASE_SCHEMA = cv.Schema(
 )
 
 # FollowMe action
-MIDEA_FOLLOW_ME_MIN = 0
-MIDEA_FOLLOW_ME_MAX = 37
 MIDEA_FOLLOW_ME_SCHEMA = cv.Schema(
     {
         cv.Required(CONF_TEMPERATURE): cv.templatable(cv.temperature),
+        cv.Optional(CONF_USE_FAHRENHEIT, default=False): cv.templatable(cv.boolean),
         cv.Optional(CONF_BEEPER, default=False): cv.templatable(cv.boolean),
     }
 )
@@ -186,6 +186,8 @@ MIDEA_FOLLOW_ME_SCHEMA = cv.Schema(
 async def follow_me_to_code(var, config, args):
     template_ = await cg.templatable(config[CONF_BEEPER], args, cg.bool_)
     cg.add(var.set_beeper(template_))
+    template_ = await cg.templatable(config[CONF_USE_FAHRENHEIT], args, cg.bool_)
+    cg.add(var.set_use_fahrenheit(template_))
     template_ = await cg.templatable(config[CONF_TEMPERATURE], args, cg.float_)
     cg.add(var.set_temperature(template_))
 

esphome/components/midea/ir_transmitter.h

@@ -16,22 +16,53 @@ 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_temp(temp);
+    this->set_temp(temp, false);
+    this->set_beeper(beeper);
+  }
+  // Direct from temperature, fahrenheit and beeper values
+  IrFollowMeData(uint8_t temp, bool fahrenheit, bool beeper) : IrFollowMeData() {
+    this->set_temp(temp, fahrenheit);
     this->set_beeper(beeper);
   }
 
   /* TEMPERATURE */
-  uint8_t temp() const { return this->get_value_(4) - 1; }
-  void set_temp(uint8_t val) { this->set_value_(4, std::min(MAX_TEMP, val) + 1); }
+  uint8_t temp() const {
+    if (this->fahrenheit()) {
+      return this->get_value_(4) + 31;
+    }
+    return this->get_value_(4) - 1;
+  }
+  void set_temp(uint8_t val, bool fahrenheit = false) {
+    this->set_fahrenheit(fahrenheit);
+    if (this->fahrenheit()) {
+      // see https://github.com/esphome/feature-requests/issues/1627#issuecomment-1365639966
+      val = esphome::clamp<uint8_t>(val, MIN_TEMP_F, MAX_TEMP_F) - 31;
+    } else {
+      val = esphome::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 {