[sht4x] Restore original comments removed in refactor

esphome/components/sht4x/sht4x.cpp

@@ -79,7 +79,9 @@ void SHT4XComponent::dump_config() {
 }
 
 void SHT4XComponent::update() {
+  // Send command
   if (!this->write_command(MEASURECOMMANDS[this->precision_])) {
+    // Warning will be printed only if warning status is not set yet
     this->status_set_warning(LOG_STR("Failed to send measurement command"));
     return;
   }
@@ -87,7 +89,9 @@ void SHT4XComponent::update() {
   this->set_timeout(10, [this]() {
     uint16_t buffer[2];
 
+    // Read measurement
     if (!this->read_data(buffer, 2)) {
+      // Using ESP_LOGW to force the warning to be printed
       ESP_LOGW(TAG, "Sensor read failed");
       this->status_set_warning();
       return;
@@ -95,12 +99,15 @@ void SHT4XComponent::update() {
 
     this->status_clear_warning();
 
+    // Evaluate and publish measurements
     if (this->temp_sensor_ != nullptr) {
+      // Temp is contained in the first result word
       float temp = TEMPERATURE_OFFSET + TEMPERATURE_SPAN * static_cast<float>(buffer[0]) / RAW_MAX;
       this->temp_sensor_->publish_state(temp);
     }
 
     if (this->humidity_sensor_ != nullptr) {
+      // Relative humidity is in the second result word
       float rh = HUMIDITY_OFFSET + HUMIDITY_SPAN * static_cast<float>(buffer[1]) / RAW_MAX;
       this->humidity_sensor_->publish_state(rh);
     }