diff --git a/en/device_api/drivers_platform/pin_if.h b/en/device_api/drivers_platform/pin_if.h
new file mode 100644
index 0000000000000000000000000000000000000000..b2b68e637f60ea334f1dc4af0f9979cefa7e4cc1
--- /dev/null
+++ b/en/device_api/drivers_platform/pin_if.h
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ *
+ * HDF is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ * See the LICENSE file in the root of this repository for complete details.
+ */
+
+/**
+ * @file pin_if.h
+ *
+ * @brief Declares the standard pin APIs.
+ *
+ * @since 3.1
+ */
+
+#ifndef PIN_IF_H
+#define PIN_IF_H
+
+#include "platform_if.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif
+#endif /* __cplusplus */
+
+/**
+ * @brief Enumerates the pin's pull types.
+ *
+ * @since 3.1
+ */
+enum PinPullType {
+    /** Floating */
+    PIN_PULL_NONE = 0,
+    /** Pull-up */
+    PIN_PULL_UP =  1,
+    /** Pull-down */
+    PIN_PULL_DOWN = 2,
+};
+
+/**
+ * @brief Obtains the device handle of a pin.
+ * This API must be called before the pin attributes are set.
+ *
+ * @param pinName Indicates the pointer to the name of the target pin.
+ *
+ * @return Returns the pin device handle if the operation is successful.
+ * @return Returns <b>NULL</b> if the operation fails.
+ *
+ * @since 3.1
+ */
+DevHandle PinGet(const char *pinName);
+
+/**
+ * @brief Releases the device handle of this pin.
+ * This API is used to release unused memory resources when a pin does not need to be set.
+ *
+ * @param handle Indicates the device handle to release.
+ *
+ * @since 3.1
+ */
+void PinPut(DevHandle handle);
+
+/**
+ * @brief Sets the pull type of a pin.
+ * 
+ *
+ * @param handle Indicates the device handle of the pin to set.
+ * @param pullType Indicates the pull type to set.
+ *
+ * @return Returns <b>0</b> if the operation is successful.
+ * @return Returns a negative value if the operation fails.
+ *
+ * @since 3.1
+ */
+int32_t PinSetPull(DevHandle handle, enum PinPullType pullType);
+
+/**
+ * @brief Obtains the pull type of a pin.
+ * 
+ *
+ * @param handle Indicates the device handle of the target pin.
+ * @param pullType Indicates the pointer to the pull type obtained.
+ *
+ * @return Returns <b>0</b> if the operation is successful.
+ * @return Returns a negative value if the operation fails.
+ *
+ * @since 3.1
+ */
+int32_t PinGetPull(DevHandle handle, enum PinPullType *pullType);
+
+/**
+ * @brief Sets the pull strength of a pin.
+ * 
+ *
+ * @param handle Indicates the device handle of the target pin.
+ * @param strength Indicates the pull strength to set.
+ *
+ * @return Returns <b>0</b> if the operation is successful.
+ * @return Returns a negative value if the operation fails.
+ *
+ * @since 3.1
+ */
+int32_t PinSetStrength(DevHandle handle, uint32_t strength);
+
+/**
+ * @brief Obtains the pull strength of a pin.
+ * 
+ *
+ * @param handle Indicates the device handle of the target pin.
+ * @param strength Indicates the pointer to the pull strength obtained.
+ *
+ * @return Returns <b>0</b> if the operation is successful.
+ * @return Returns a negative value if the operation fails.
+ *
+ * @since 3.1
+ */
+int32_t PinGetStrength(DevHandle handle, uint32_t *strength);
+
+/**
+ * @brief Sets the pin function.
+ * 
+ *
+ * @param handle Indicates the device handle of the target pin.
+ * @param funcName Indicates the pointer to the function to set.
+ *
+ * @return Returns <b>0</b> if the operation is successful.
+ * @return Returns a negative value if the operation fails.
+ *
+ * @since 3.1
+ */
+int32_t PinSetFunc(DevHandle handle, const char *funcName);
+
+/**
+ * @brief Obtains the pin function.
+ *
+ *
+ * @param handle Indicates the device handle of the target pin.
+ * @param funcName Indicates the double pointer to the pin function obtained.
+ *
+ * @return Returns <b>0</b> if the operation is successful.
+ * @return Returns a negative value if the operation fails.
+ *
+ * @since 3.1
+ */
+int32_t PinGetFunc(DevHandle handle, const char **funcName);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif
+#endif /* __cplusplus */
+
+#endif /* PIN_IF_H */