From 01d044cedc59cd482ee3bb2b935f783d3e79d632 Mon Sep 17 00:00:00 2001
From: Theo Arends <11044339+arendst@users.noreply.github.com>
Date: Fri, 5 Jun 2026 15:31:11 +0200
Subject: [PATCH] Changed SCD30 library FrogmoreScd30 to Sensirion
arduino-i2c-scd30 v1.1.1
---
CHANGELOG.md | 1 +
RELEASENOTES.md | 1 +
lib/default/TasmotaWire/src/Wire.cpp | 4 +
lib/default/TasmotaWire/src/Wire.h | 1 +
lib/lib_i2c/arduino-i2c-scd30/.clang-format | 14 +
lib/lib_i2c/arduino-i2c-scd30/CHANGELOG.md | 33 +
lib/lib_i2c/arduino-i2c-scd30/LICENSE | 29 +
lib/lib_i2c/arduino-i2c-scd30/README.md | 221 ++++++
.../examples/exampleUsage/exampleUsage.ino | 127 ++++
...ino-Mega-2560-Rev3-i2c-pinout-3.3V-SEL.png | Bin 0 -> 415147 bytes
.../Arduino-Micro-i2c-pinout-3.3V-SEL.png | Bin 0 -> 330166 bytes
.../Arduino-Nano-i2c-pinout-3.3V-SEL.png | Bin 0 -> 303861 bytes
.../Arduino-Uno-Rev3-i2c-pinout-3.3V-SEL.png | Bin 0 -> 323366 bytes
.../esp32-devkitc-i2c-pinout-3.3V-SEL.png | Bin 0 -> 537642 bytes
.../arduino-i2c-scd30/images/scd30_pinout.jpg | Bin 0 -> 24138 bytes
.../images/sensor_scd30_image.jpg | Bin 0 -> 13460 bytes
lib/lib_i2c/arduino-i2c-scd30/keywords.txt | 43 ++
.../arduino-i2c-scd30/library.properties | 11 +
lib/lib_i2c/arduino-i2c-scd30/metadata.yml | 7 +
.../src/SensirionI2cScd30.cpp | 436 ++++++++++++
.../arduino-i2c-scd30/src/SensirionI2cScd30.h | 463 ++++++++++++
tasmota/tasmota_support/support_a_i2c.ino | 22 +
tasmota/tasmota_xsns_sensor/xsns_42_scd30.ino | 672 +++++++++++-------
23 files changed, 1828 insertions(+), 257 deletions(-)
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/.clang-format
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/CHANGELOG.md
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/LICENSE
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/README.md
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/examples/exampleUsage/exampleUsage.ino
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/images/Arduino-Mega-2560-Rev3-i2c-pinout-3.3V-SEL.png
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/images/Arduino-Micro-i2c-pinout-3.3V-SEL.png
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/images/Arduino-Nano-i2c-pinout-3.3V-SEL.png
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/images/Arduino-Uno-Rev3-i2c-pinout-3.3V-SEL.png
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/images/esp32-devkitc-i2c-pinout-3.3V-SEL.png
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/images/scd30_pinout.jpg
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/images/sensor_scd30_image.jpg
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/keywords.txt
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/library.properties
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/metadata.yml
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/src/SensirionI2cScd30.cpp
create mode 100644 lib/lib_i2c/arduino-i2c-scd30/src/SensirionI2cScd30.h
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 52e4dfe81..f20a6fd68 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ All notable changes to this project will be documented in this file.
### Breaking Changed
### Changed
+- SCD30 library FrogmoreScd30 to Sensirion arduino-i2c-scd30 v1.1.1
- SCD4x library FrogmoreScd40 to Sensirion arduino-i2c-scd4x v1.1.0
- SPS30 library Sensirion arduino-i2c-sps30 v1.0.1
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index d8cee5b8f..daf97f317 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -135,6 +135,7 @@ The latter links can be used for OTA upgrades too like ``OtaUrl https://ota.tasm
### Changed
- ESP32 Platform from 2025.04.30 to 2026.05.50, Framework (Arduino Core) from v3.1.11 to v3.3.8.260506 and IDF from v5.3.4.260127 to v5.5.4.260407 [#24718](https://github.com/arendst/Tasmota/issues/24718)
+- SCD30 library FrogmoreScd30 to Sensirion arduino-i2c-scd30 v1.1.1
- SCD4x library FrogmoreScd40 to Sensirion arduino-i2c-scd4x v1.1.0
- SPS30 library Sensirion arduino-i2c-sps30 v1.0.1
- Increase security by inverting state of `define DISABLE_REFERER_CHK` controlling remote HTTP access which is now default off
diff --git a/lib/default/TasmotaWire/src/Wire.cpp b/lib/default/TasmotaWire/src/Wire.cpp
index 90226adcd..5b43deb99 100644
--- a/lib/default/TasmotaWire/src/Wire.cpp
+++ b/lib/default/TasmotaWire/src/Wire.cpp
@@ -77,6 +77,10 @@ void TwoWire::setClockStretchLimit(uint32_t limit) {
twi.setClockStretchLimit(limit);
}
+uint8_t TwoWire::status(void) {
+ return twi.status();
+}
+
size_t TwoWire::requestFrom(uint8_t address, size_t size, bool sendStop) {
if (size > BUFFER_LENGTH) {
size = BUFFER_LENGTH;
diff --git a/lib/default/TasmotaWire/src/Wire.h b/lib/default/TasmotaWire/src/Wire.h
index 3c6f924d5..229bee43e 100644
--- a/lib/default/TasmotaWire/src/Wire.h
+++ b/lib/default/TasmotaWire/src/Wire.h
@@ -60,6 +60,7 @@ public:
void begin();
void setClock(uint32_t);
void setClockStretchLimit(uint32_t);
+ uint8_t status();
void beginTransmission(uint8_t);
void beginTransmission(int);
uint8_t endTransmission(void);
diff --git a/lib/lib_i2c/arduino-i2c-scd30/.clang-format b/lib/lib_i2c/arduino-i2c-scd30/.clang-format
new file mode 100644
index 000000000..047f2adf1
--- /dev/null
+++ b/lib/lib_i2c/arduino-i2c-scd30/.clang-format
@@ -0,0 +1,14 @@
+---
+Language: Cpp
+BasedOnStyle: LLVM
+IndentWidth: 4
+AlignAfterOpenBracket: Align
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: false
+IndentCaseLabels: true
+SpacesBeforeTrailingComments: 2
+PointerAlignment: Left
+AlignEscapedNewlines: Left
+ForEachMacros: ['TEST_GROUP', 'TEST']
+...
diff --git a/lib/lib_i2c/arduino-i2c-scd30/CHANGELOG.md b/lib/lib_i2c/arduino-i2c-scd30/CHANGELOG.md
new file mode 100644
index 000000000..46dc9db23
--- /dev/null
+++ b/lib/lib_i2c/arduino-i2c-scd30/CHANGELOG.md
@@ -0,0 +1,33 @@
+# CHANGELOG
+
+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]
+
+## [1.1.1] - 2026-4-27
+
+### Added
+
+- Added `read_serial_number` to example usage
+## [1.1.0] - 2026-4-24
+
+### Added
+
+- Added `read_serial_number` command to read out the sensor's serial number
+## [1.0.0] - 2025-8-25
+
+### Changed
+
+- Updated to latest driver framework
+## [0.1.0] - 2022-4-07
+
+### Added
+
+- Initial SCD30 driver release
+
+[Unreleased]: https://github.com/Sensirion/arduino-i2c-scd30/compare/1.1.1...HEAD
+[1.1.1]: https://github.com/Sensirion/arduino-i2c-scd30/compare/1.1.0...1.1.1
+[1.1.0]: https://github.com/Sensirion/arduino-i2c-scd30/compare/1.0.0...1.1.0
+[1.0.0]: https://github.com/Sensirion/arduino-i2c-scd30/compare/0.1.0...1.0.0
+[0.1.0]: https://github.com/Sensirion/arduino-i2c-scd30/releases/tag/0.1.0
\ No newline at end of file
diff --git a/lib/lib_i2c/arduino-i2c-scd30/LICENSE b/lib/lib_i2c/arduino-i2c-scd30/LICENSE
new file mode 100644
index 000000000..8fe04edd1
--- /dev/null
+++ b/lib/lib_i2c/arduino-i2c-scd30/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2026, Sensirion AG
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/lib/lib_i2c/arduino-i2c-scd30/README.md b/lib/lib_i2c/arduino-i2c-scd30/README.md
new file mode 100644
index 000000000..7b507b707
--- /dev/null
+++ b/lib/lib_i2c/arduino-i2c-scd30/README.md
@@ -0,0 +1,221 @@
+# Sensirion I²C SCD30 Arduino Library
+
+This is the Sensirion SCD30 library for Arduino allowing you to
+communicate with a SCD30 sensor
+over I²C.
+
+
+
+Click [here](https://sensirion.com/products/catalog/SCD30/) to learn more about the Sensirion SCD30 sensor.
+
+
+
+The default I²C address of [SCD30](https://sensirion.com/products/catalog/SCD30/) is **0x61**.
+
+
+
+## Installation of the library
+
+This library can be installed using the Arduino Library manager:
+Start the [Arduino IDE](http://www.arduino.cc/en/main/software) and open
+the Library Manager via
+
+`Sketch` ➔ `Include Library` ➔ `Manage Libraries...`
+
+Search for the `Sensirion I2C SCD30` library in the `Filter
+your search...` field and install it by clicking the `install` button.
+
+If you cannot find it in the library manager, download the latest release as .zip file
+and add it to your [Arduino IDE](http://www.arduino.cc/en/main/software) via
+
+`Sketch` ➔ `Include Library` ➔ `Add .ZIP Library...`
+
+Don't forget to **install the dependencies** listed below the same way via library
+manager or `Add .ZIP Library`
+
+#### Dependencies
+* [Sensirion Core](https://github.com/Sensirion/arduino-core)
+
+## Connect the sensor
+
+Use the following pin description to connect your SCD30 to the standard I²C bus of your Arduino board:
+
+
+
+| *Pin* | *Cable Color* | *Name* | *Description* | *Comments* |
+|-------|---------------|:------:|----------------|------------|
+| 1 | red | VDD | Supply Voltage | 3.3V to 5.5V
+| 2 | black | GND | Ground |
+| 3 | yellow | SCL | I2C: Serial clock input |
+| 4 | green | SDA | I2C: Serial data input / output |
+| 5 | | RDY | | High when data is available - do not connect
+| 6 | | PWM | | do not connect
+| 7 | blue | SEL | Interface select | Pull to ground or floating for I2C
+
+
+
+
+The recommended voltage is 3.3V.
+
+### Board specific wiring
+You will find pinout schematics for recommended board models below:
+
+
+
+Arduino Uno
+
+
+| *SCD30* | *SCD30 Pin* | *Cable Color* | *Board Pin* |
+| :---: | --- | --- | --- |
+| VDD | 1 | red | 3.3V |
+| GND | 2 | black | GND |
+| SCL | 3 | yellow | D19/SCL |
+| SDA | 4 | green | D18/SDA |
+| RDY | 5 | | |
+| PWM | 6 | | |
+| SEL | 7 | blue | GND |
+
+
+
+
+
+Arduino Nano
+
+
+| *SCD30* | *SCD30 Pin* | *Cable Color* | *Board Pin* |
+| :---: | --- | --- | --- |
+| VDD | 1 | red | 3.3V |
+| GND | 2 | black | GND |
+| SCL | 3 | yellow | A5 |
+| SDA | 4 | green | A4 |
+| RDY | 5 | | |
+| PWM | 6 | | |
+| SEL | 7 | blue | GND |
+
+
+
+
+
+Arduino Micro
+
+
+| *SCD30* | *SCD30 Pin* | *Cable Color* | *Board Pin* |
+| :---: | --- | --- | --- |
+| VDD | 1 | red | 3.3V |
+| GND | 2 | black | GND |
+| SCL | 3 | yellow | ~D3/SCL |
+| SDA | 4 | green | D2/SDA |
+| RDY | 5 | | |
+| PWM | 6 | | |
+| SEL | 7 | blue | GND |
+
+
+
+
+
+Arduino Mega 2560
+
+
+| *SCD30* | *SCD30 Pin* | *Cable Color* | *Board Pin* |
+| :---: | --- | --- | --- |
+| VDD | 1 | red | 3.3V |
+| GND | 2 | black | GND |
+| SCL | 3 | yellow | D21/SCL |
+| SDA | 4 | green | D20/SDA |
+| RDY | 5 | | |
+| PWM | 6 | | |
+| SEL | 7 | blue | GND |
+
+
+
+
+
+ESP32 DevKitC
+
+
+| *SCD30* | *SCD30 Pin* | *Cable Color* | *Board Pin* |
+| :---: | --- | --- | --- |
+| VDD | 1 | red | 3V3 |
+| GND | 2 | black | GND |
+| SCL | 3 | yellow | GPIO 22 |
+| SDA | 4 | green | GPIO 21 |
+| RDY | 5 | | |
+| PWM | 6 | | |
+| SEL | 7 | blue | GND |
+
+
+
+
+
+