From 4886102b44fe4be7886cd5d42e839a459c45f9ff Mon Sep 17 00:00:00 2001
From: umam-123 <umamaheswari.acca@gmail.com>
Date: Sat, 14 Feb 2026 00:32:36 +0530
Subject: [PATCH 1/3] Create package.json

add scd4x package.json
---
 peripherals/sensors/scd4x/package.json | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 peripherals/sensors/scd4x/package.json

diff --git a/peripherals/sensors/scd4x/package.json b/peripherals/sensors/scd4x/package.json
new file mode 100644
index 0000000000..26c54c4711
--- /dev/null
+++ b/peripherals/sensors/scd4x/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "scd4x",
+  "description": "Sensirion SCD4x (CO2/Temp/Humi) sensor driver",
+  "description_zh": "Sensirion SCD4x (CO2/温湿度) 传感器驱动",
+  "enable": "PKG_USING_SCD4X",
+  "keywords": ["scd4x", "co2", "sensirion", "sensor"],
+  "category": "peripherals/sensors",
+  "author": { "name": "Uma", "email": "umamaheswari.acca@gmail.com", "github": "umam-123" },
+  "license": "Apache-2.0",
+  "repository": "https://github.com/umam-123/scd4x",
+  "icon": "unknown",
+  "homepage": "https://github.com/umam-123/scd4x#readme",
+  "site": [
+    { "version": "v1.0.0", "URL": "https://github.com/umam-123/scd4x/archive/refs/tags/v1.0.0.zip", "filename": "scd4x-v1.0.0.zip", "VER_SHA": "master" },
+    { "version": "latest", "URL": "https://github.com/umam-123/scd4x/archive/refs/heads/master.zip", "filename": "scd4x-master.zip", "VER_SHA": "master" }
+  ]
+}

From 0e46b7ff3c330df5b8b2f789c0e4085308bfc6b7 Mon Sep 17 00:00:00 2001
From: umam-123 <umamaheswari.acca@gmail.com>
Date: Sat, 14 Feb 2026 00:33:33 +0530
Subject: [PATCH 2/3] Create Kconfig

add scd4x Kconfig
---
 peripherals/sensors/scd4x/Kconfig | 41 +++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 peripherals/sensors/scd4x/Kconfig

diff --git a/peripherals/sensors/scd4x/Kconfig b/peripherals/sensors/scd4x/Kconfig
new file mode 100644
index 0000000000..f8c9a992a4
--- /dev/null
+++ b/peripherals/sensors/scd4x/Kconfig
@@ -0,0 +1,41 @@
+# Kconfig file for package scd4x
+menuconfig PKG_USING_SCD4X
+    bool "SCD4x: Sensirion CO2, Temperature and Humidity Sensor"
+    default n
+    select RT_USING_I2C
+
+if PKG_USING_SCD4X
+    config PKG_SCD4X_PATH
+        string
+        default "/packages/peripherals/sensors/scd4x"
+
+    config PKG_SCD4X_I2C_BUS
+        string "I2C bus name"
+        default "i2c1"
+
+    config PKG_SCD4X_ASC_ENABLE
+        bool "Enable Automatic Self Calibration (ASC)"
+        default y
+
+    config PKG_USING_SCD4X_SAMPLE
+        bool "Enable SCD4x sample application"
+        default n
+
+    config PKG_USING_SCD4X_SHELL
+        bool "Enable SCD4x FinSH shell commands"
+        default y
+
+    choice
+        prompt "Version"
+        default PKG_USING_SCD4X_LATEST_VERSION
+        config PKG_USING_SCD4X_V100
+            bool "v1.0.0"
+        config PKG_USING_SCD4X_LATEST_VERSION
+            bool "latest"
+    endchoice
+
+    config PKG_SCD4X_VER
+       string
+       default "v1.0.0"    if PKG_USING_SCD4X_V100
+       default "latest"    if PKG_USING_SCD4X_LATEST_VERSION
+endif

From 4ad4684372463cdb3de6bfa9a02236f782233449 Mon Sep 17 00:00:00 2001
From: umam-123 <umamaheswari.acca@gmail.com>
Date: Sat, 14 Feb 2026 00:35:13 +0530
Subject: [PATCH 3/3] Update Kconfig

source scd4x Kconfig
---
 peripherals/sensors/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/peripherals/sensors/Kconfig b/peripherals/sensors/Kconfig
index a8e7d6c964..a5d45330c4 100755
--- a/peripherals/sensors/Kconfig
+++ b/peripherals/sensors/Kconfig
@@ -73,5 +73,6 @@ source "$PKGS_DIR/packages/peripherals/sensors/sths34pf80/Kconfig"
 source "$PKGS_DIR/packages/peripherals/sensors/p3t1755/Kconfig"
 source "$PKGS_DIR/packages/peripherals/sensors/qmi8658/Kconfig"
 source "$PKGS_DIR/packages/peripherals/sensors/icm20948/Kconfig"
+source "$PKGS_DIR/packages/peripherals/sensors/scd4x/Kconfig"
 
 endmenu