From 13ef89ec399d1d6a471c5734a3adf228df019272 Mon Sep 17 00:00:00 2001
From: brentru <brent@adafruit.com>
Date: Fri, 3 Mar 2023 10:34:47 -0500
Subject: [PATCH 1/2] add co2, eco2

---
 Adafruit_Sensor.cpp | 6 ++++++
 Adafruit_Sensor.h   | 7 ++++++-
 README.md           | 8 +++++++-
 3 files changed, 19 insertions(+), 2 deletions(-)
 mode change 100755 => 100644 Adafruit_Sensor.h

diff --git a/Adafruit_Sensor.cpp b/Adafruit_Sensor.cpp
index a5a6d4e..a66e2d0 100644
--- a/Adafruit_Sensor.cpp
+++ b/Adafruit_Sensor.cpp
@@ -70,6 +70,12 @@ void Adafruit_Sensor::printSensorDetails(void) {
   case SENSOR_TYPE_NOX_INDEX:
     Serial.print(F("Nitrogen Oxides (Index)"));
     break;
+  case SENSOR_TYPE_CO2:
+    Serial.print(F("Carbon Dioxide (ppm)"));
+    break;
+  case SENSOR_TYPE_eCO2:
+    Serial.print(F("Equivalent/estimated CO2 (ppm)"));
+    break;
   }
 
   Serial.println();
diff --git a/Adafruit_Sensor.h b/Adafruit_Sensor.h
old mode 100755
new mode 100644
index b0169d8..34b4196
--- a/Adafruit_Sensor.h
+++ b/Adafruit_Sensor.h
@@ -69,7 +69,9 @@ typedef enum {
   SENSOR_TYPE_COLOR = (17),
   SENSOR_TYPE_TVOC = (18),
   SENSOR_TYPE_VOC_INDEX = (19),
-  SENSOR_TYPE_NOX_INDEX = (20)
+  SENSOR_TYPE_NOX_INDEX = (20),
+  SENSOR_TYPE_CO2 = (21),
+  SENSOR_TYPE_eCO2 = (22),
 } sensors_type_t;
 
 /** struct sensors_vec_s is used to return a vector in a common format. */
@@ -142,6 +144,9 @@ typedef struct {
                           normal (unitless) */
     float nox_index; /**< NOx (Nitrogen Oxides) index where 100 is normal
                           (unitless) */
+    float CO2;       /**< Measured CO2 in parts per million (ppm) */
+    float eCO2;      /**< equivalent/estimated CO2 in parts per million (ppm
+                        estimated from some other measurement) */
     sensors_color_t color; /**< color in RGB component values */
   };                       ///< Union for the wide ranges of data we can carry
 } sensors_event_t;
diff --git a/README.md b/README.md
index 1e87bed..a6c0216 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,9 @@ typedef enum
   SENSOR_TYPE_COLOR                 = (17),
   SENSOR_TYPE_TVOC                  = (18),
   SENSOR_TYPE_VOC_INDEX             = (19),
-  SENSOR_TYPE_NOX_INDEX             = (20)
+  SENSOR_TYPE_NOX_INDEX             = (20),
+  SENSOR_TYPE_CO2                   = (21),
+  SENSOR_TYPE_eCO2                  = (22),
 } sensors_type_t;
 ```
 
@@ -143,6 +145,8 @@ typedef struct
         float           tvoc;
         float           voc_index;
         float           nox_index;
+        float           CO2,
+        float           eCO2,
         sensors_color_t color;
     };
 } sensors_event_t;
@@ -188,6 +192,8 @@ A key part of the abstraction layer is the standardisation of values on SI units
 - **tvoc**: values are in **parts per billion** (ppb)
 - **voc_index**: values are an **index** from 1-500 with 100 being normal
 - **nox_index**: values are an **index** from 1-500 with 100 being normal
+- **CO2**: values are in **parts per million*** (ppm)
+- **eCO2**: values are in **parts per million*** (ppm)
 
 
 ## The Unified Driver Abstraction Layer in Practice ##

From 175c626fdfeca83d753e902f7092d2e2402d39c8 Mon Sep 17 00:00:00 2001
From: brentru <brent@adafruit.com>
Date: Fri, 3 Mar 2023 10:40:56 -0500
Subject: [PATCH 2/2] bump library version

---
 library.properties | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library.properties b/library.properties
index 019fd7a..1fdb1a8 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Adafruit Unified Sensor
-version=1.1.7
+version=1.1.8
 author=Adafruit <info@adafruit.com>
 maintainer=Adafruit <info@adafruit.com>
 sentence=Required for all Adafruit Unified Sensor based libraries.