misc: add HSM state machine package

misc/Kconfig

@@ -39,4 +39,5 @@ source "$PKGS_DIR/packages/misc/qparam/Kconfig"
 source "$PKGS_DIR/packages/misc/CorevMCU_CLI/Kconfig"
 source "$PKGS_DIR/packages/misc/get_irq_priority/Kconfig"
 source "$PKGS_DIR/packages/misc/drmp/Kconfig"
+source "$PKGS_DIR/packages/misc/hsm/Kconfig"
 endmenu

misc/hsm/Kconfig

@@ -0,0 +1,46 @@
+menuconfig PKG_USING_HSM
+    bool "HSM: Hierarchical state machines for embedded systems"
+    default n
+    help
+        HSM is a minimal, event-driven hierarchical state machine framework designed for embedded systems.
+        It supports nested states, entry/exit actions, state transitions, and provides a simple C API for event handling.
+
+if PKG_USING_HSM
+
+    config PKG_HSM_PATH
+        string
+        default "/packages/misc/hsm"
+
+    config PKG_HSM_MAX_LEVEL
+        int "Maximum nesting level for state hierarchy"
+        range 5 20
+        default 10
+        help
+            The maximum nesting level supported for hierarchical states.
+            Increase this value for deeply nested state machines.
+
+    config PKG_HSM_USING_EXAMPLE
+        bool "Enable HSM examples"
+        default n
+        help
+            Enable the HSM LED example code
+
+    choice
+        prompt "Version"
+        default PKG_USING_HSM_LATEST_VERSION
+        help
+            Select the package version
+
+        config PKG_USING_HSM_V100
+            bool "v1.0.0"
+
+        config PKG_USING_HSM_LATEST_VERSION
+            bool "latest"
+    endchoice
+
+    config PKG_HSM_VER
+       string
+       default "v1.0.0"    if PKG_USING_HSM_V100
+       default "latest"    if PKG_USING_HSM_LATEST_VERSION
+
+endif 

misc/hsm/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "hsm",
+  "description": "Hierarchical state machines for designing event-driven systems",
+  "description_zh": "一种用于设计事件驱动系统的层次化状态机库",
+  "enable": "PKG_USING_HSM",
+  "keywords": [
+    "hsm",
+    "state-machine",
+    "state",
+    "embedded"
+  ],
+  "category": "misc",
+  "author": {
+    "name": "Ye Zenghui",
+    "email": "[email protected]",
+    "github": "https://github.com/Ye-Zenghui"
+  },
+  "license": "MIT",
+  "repository": "https://github.com/Ye-Zenghui/hsm",
+  "icon": "unknown",
+  "homepage": "https://github.com/Ye-Zenghui/hsm#readme",
+  "doc": "https://github.com/Ye-Zenghui/hsm/blob/master/README.md",
+  "site": [
+    {
+      "version": "latest",
+      "URL": "https://github.com/Ye-Zenghui/hsm.git",
+      "filename": "",
+      "VER_SHA": "master"
+    },
+    {
+      "version": "v1.0.0",
+      "URL": "https://github.com/Ye-Zenghui/hsm/archive/refs/tags/v1.0.0.zip",
+      "filename": "hsm-1.0.0.zip",
+      "VER_SHA": "fill in latest version SHA"
+    }
+  ]
+}