Fix RH_CO2_ALT sample size

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Fixed
+- Sample size for type RH_CO2_ALT resp Sample type 2 changed from 6 to 8 Bytes as specified in 
+  https://github.com/Sensirion/arduino-ble-gadget/blob/master/documents/00-Sensirion_BLE_communication_protocol.pdf
+
 ## [0.3.0] - Breaking Changes
 
 ### Added

library.properties

@@ -1,5 +1,5 @@
 name=Sensirion UPT Core
-version=0.3.0
+version=0.3.1
 author=Jonas Stolle, Maximilian Paulsen
 maintainer=Sensirion AG <sensirion.com>
 sentence=Library for definitions and configurations used by other Sensirion Unified Prototyping Toolkit (UPT) libraries.

src/BLEProtocol.cpp

@@ -83,7 +83,7 @@ std::map<DataType, SampleConfig> sampleConfigSelector = {
      {.dataType = DataType::T_RH_CO2_ALT,
       .downloadType = 7,
       .sampleType = 8,
-      .sampleSizeBytes = 6, // ALT is not being sent
+      .sampleSizeBytes = 8, 
       .sampleCountPerPacket = 2,
       .sensirionAdvertisementSampleType = 0,
       .sampleSlots = {{SignalType::TEMPERATURE_DEGREES_CELSIUS,
@@ -100,7 +100,9 @@ std::map<DataType, SampleConfig> sampleConfigSelector = {
                        {.signalType = SignalType::CO2_PARTS_PER_MILLION,
                         .offset = 4,
                         .encodingFunction = &encodeSimple,
-                        .decodingFunction = &decodeSimple}}}}},
+                        .decodingFunction = &decodeSimple}}
+                        // 2 Bytes reserved (ALT), not used, but bytes must be sent for proper decoding of samples
+                        }}},
     {T_RH_CO2_PM25,
      {.dataType = DataType::T_RH_CO2_PM25,
       .downloadType = 11,