From 1424091ee51a31d75558f8e4a029ea80edb4d415 Mon Sep 17 00:00:00 2001
From: Samuel Sieb <samuel-github@sieb.net>
Date: Sun, 21 Nov 2021 15:11:36 -0800
Subject: [PATCH] Remove floating point ops from the ISR (#2751)

Co-authored-by: Samuel Sieb <samuel@sieb.net>
---
 esphome/components/zyaura/zyaura.cpp | 40 +++++++++++++++++-----------
 esphome/components/zyaura/zyaura.h   |  8 +++---
 2 files changed, 28 insertions(+), 20 deletions(-)

diff --git a/esphome/components/zyaura/zyaura.cpp b/esphome/components/zyaura/zyaura.cpp
index 11643a5c23..621439aa0c 100644
--- a/esphome/components/zyaura/zyaura.cpp
+++ b/esphome/components/zyaura/zyaura.cpp
@@ -57,38 +57,46 @@ void IRAM_ATTR ZaSensorStore::interrupt(ZaSensorStore *arg) {
 void IRAM_ATTR ZaSensorStore::set_data_(ZaMessage *message) {
   switch (message->type) {
     case HUMIDITY:
-      this->humidity = (message->value > 10000) ? NAN : (message->value / 100.0f);
+      this->humidity = message->value;
       break;
-
     case TEMPERATURE:
-      this->temperature = (message->value > 5970) ? NAN : (message->value / 16.0f - 273.15f);
+      this->temperature = message->value;
       break;
-
     case CO2:
-      this->co2 = (message->value > 10000) ? NAN : message->value;
-      break;
-
-    default:
+      this->co2 = message->value;
       break;
   }
 }
 
-bool ZyAuraSensor::publish_state_(sensor::Sensor *sensor, float *value) {
-  // Sensor doesn't added to configuration
+bool ZyAuraSensor::publish_state_(ZaDataType data_type, sensor::Sensor *sensor, uint16_t *data_value) {
+  // Sensor wasn't added to configuration
   if (sensor == nullptr) {
     return true;
   }
 
-  sensor->publish_state(*value);
+  float value = NAN;
+  switch (data_type) {
+    case HUMIDITY:
+      value = (*data_value > 10000) ? NAN : (*data_value / 100.0f);
+      break;
+    case TEMPERATURE:
+      value = (*data_value > 5970) ? NAN : (*data_value / 16.0f - 273.15f);
+      break;
+    case CO2:
+      value = (*data_value > 10000) ? NAN : *data_value;
+      break;
+  }
+
+  sensor->publish_state(value);
 
   // Sensor reported wrong value
-  if (std::isnan(*value)) {
+  if (std::isnan(value)) {
     ESP_LOGW(TAG, "Sensor reported invalid data. Is the update interval too small?");
     this->status_set_warning();
     return false;
   }
 
-  *value = NAN;
+  *data_value = -1;
   return true;
 }
 
@@ -104,9 +112,9 @@ void ZyAuraSensor::dump_config() {
 }
 
 void ZyAuraSensor::update() {
-  bool co2_result = this->publish_state_(this->co2_sensor_, &this->store_.co2);
-  bool temperature_result = this->publish_state_(this->temperature_sensor_, &this->store_.temperature);
-  bool humidity_result = this->publish_state_(this->humidity_sensor_, &this->store_.humidity);
+  bool co2_result = this->publish_state_(CO2, this->co2_sensor_, &this->store_.co2);
+  bool temperature_result = this->publish_state_(TEMPERATURE, this->temperature_sensor_, &this->store_.temperature);
+  bool humidity_result = this->publish_state_(HUMIDITY, this->humidity_sensor_, &this->store_.humidity);
 
   if (co2_result && temperature_result && humidity_result) {
     this->status_clear_warning();
diff --git a/esphome/components/zyaura/zyaura.h b/esphome/components/zyaura/zyaura.h
index 2b9e3fbb35..85c31ec75a 100644
--- a/esphome/components/zyaura/zyaura.h
+++ b/esphome/components/zyaura/zyaura.h
@@ -42,9 +42,9 @@ class ZaDataProcessor {
 
 class ZaSensorStore {
  public:
-  float co2 = NAN;
-  float temperature = NAN;
-  float humidity = NAN;
+  uint16_t co2 = -1;
+  uint16_t temperature = -1;
+  uint16_t humidity = -1;
 
   void setup(InternalGPIOPin *pin_clock, InternalGPIOPin *pin_data);
   static void interrupt(ZaSensorStore *arg);
@@ -79,7 +79,7 @@ class ZyAuraSensor : public PollingComponent {
   sensor::Sensor *temperature_sensor_{nullptr};
   sensor::Sensor *humidity_sensor_{nullptr};
 
-  bool publish_state_(sensor::Sensor *sensor, float *value);
+  bool publish_state_(ZaDataType data_type, sensor::Sensor *sensor, uint16_t *data_value);
 };
 
 }  // namespace zyaura