diff --git a/bsp/simulator/.config b/bsp/simulator/.config
index 6f720f01bc87197ac7dcda79c6649aae1a8dbce3..8afd87ff1e22870f94baa33a0ca2194aff4eb6a6 100644
--- a/bsp/simulator/.config
+++ b/bsp/simulator/.config
@@ -1,9 +1,13 @@
-# Generated by Kconfiglib (https://github.com/ulfalizer/Kconfiglib)
+#
+# Automatically generated file; DO NOT EDIT.
+# RT-Thread Configuration
+#
 
 #
 # RT-Thread Kernel
 #
 CONFIG_RT_NAME_MAX=8
+# CONFIG_RT_USING_BIG_ENDIAN is not set
 # CONFIG_RT_USING_ARCH_DATA_TYPE is not set
 # CONFIG_RT_USING_SMP is not set
 CONFIG_RT_ALIGN_SIZE=4
@@ -26,8 +30,6 @@ CONFIG_IDLE_THREAD_STACK_SIZE=256
 # CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
 # CONFIG_RT_USING_TINY_FFS is not set
 # CONFIG_RT_PRINTF_LONGLONG is not set
-# end of kservice optimization
-
 CONFIG_RT_DEBUG=y
 CONFIG_RT_DEBUG_COLOR=y
 # CONFIG_RT_DEBUG_INIT_CONFIG is not set
@@ -50,7 +52,6 @@ CONFIG_RT_USING_EVENT=y
 CONFIG_RT_USING_MAILBOX=y
 CONFIG_RT_USING_MESSAGEQUEUE=y
 # CONFIG_RT_USING_SIGNALS is not set
-# end of Inter-Thread communication
 
 #
 # Memory Management
@@ -67,7 +68,6 @@ CONFIG_RT_USING_SMALL_MEM_AS_HEAP=y
 # CONFIG_RT_USING_MEMTRACE is not set
 # CONFIG_RT_USING_HEAP_ISR is not set
 CONFIG_RT_USING_HEAP=y
-# end of Memory Management
 
 #
 # Kernel Device Object
@@ -78,10 +78,9 @@ CONFIG_RT_USING_DEVICE=y
 CONFIG_RT_USING_CONSOLE=y
 CONFIG_RT_CONSOLEBUF_SIZE=128
 CONFIG_RT_CONSOLE_DEVICE_NAME="console"
-# end of Kernel Device Object
-
 CONFIG_RT_VER_NUM=0x40100
-# end of RT-Thread Kernel
+# CONFIG_RT_USING_CPU_FFS is not set
+# CONFIG_ARCH_CPU_STACK_GROWS_UPWARD is not set
 
 #
 # RT-Thread Components
@@ -96,7 +95,6 @@ CONFIG_RT_MAIN_THREAD_PRIORITY=10
 # C++ features
 #
 # CONFIG_RT_USING_CPLUSPLUS is not set
-# end of C++ features
 
 #
 # Command shell
@@ -116,7 +114,6 @@ CONFIG_FINSH_USING_DESCRIPTION=y
 # CONFIG_FINSH_ECHO_DISABLE_DEFAULT is not set
 # CONFIG_FINSH_USING_AUTH is not set
 CONFIG_FINSH_ARG_MAX=10
-# end of Command shell
 
 #
 # Device virtual file system
@@ -151,12 +148,9 @@ CONFIG_RT_DFS_ELM_MAX_SECTOR_SIZE=512
 # CONFIG_RT_DFS_ELM_USE_ERASE is not set
 CONFIG_RT_DFS_ELM_REENTRANT=y
 CONFIG_RT_DFS_ELM_MUTEX_TIMEOUT=3000
-# end of elm-chan's FatFs, Generic FAT Filesystem Module
-
 CONFIG_RT_USING_DFS_DEVFS=y
 # CONFIG_RT_USING_DFS_ROMFS is not set
 # CONFIG_RT_USING_DFS_RAMFS is not set
-# end of Device virtual file system
 
 #
 # Device Drivers
@@ -195,25 +189,28 @@ CONFIG_RT_SERIAL_RB_BUFSZ=64
 #
 # Using USB
 #
+# CONFIG_RT_USING_USB is not set
 # CONFIG_RT_USING_USB_HOST is not set
 # CONFIG_RT_USING_USB_DEVICE is not set
-# end of Using USB
-# end of Device Drivers
 
 #
 # POSIX layer and C standard library
 #
-# CONFIG_RT_USING_LIBC is not set
-CONFIG_RT_LIBC_USING_TIME=y
+# CONFIG_RT_USING_MODULE is not set
 CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 
 #
 # POSIX (Portable Operating System Interface) layer
 #
-# CONFIG_RT_USING_POSIX_FS is not set
+CONFIG_RT_USING_POSIX_FS=y
+# CONFIG_RT_USING_POSIX_DEVIO is not set
+# CONFIG_RT_USING_POSIX_POLL is not set
+# CONFIG_RT_USING_POSIX_SELECT is not set
+# CONFIG_RT_USING_POSIX_TERMIOS is not set
+# CONFIG_RT_USING_POSIX_AIO is not set
+# CONFIG_RT_USING_POSIX_MMAN is not set
 # CONFIG_RT_USING_POSIX_DELAY is not set
 # CONFIG_RT_USING_POSIX_CLOCK is not set
-# CONFIG_RT_USING_POSIX_GETLINE is not set
 # CONFIG_RT_USING_PTHREADS is not set
 
 #
@@ -226,9 +223,6 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 #
 # Socket is in the 'Network' category
 #
-# end of Interprocess Communication (IPC)
-# end of POSIX (Portable Operating System Interface) layer
-# end of POSIX layer and C standard library
 
 #
 # Network
@@ -238,32 +232,26 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # Socket abstraction layer
 #
 # CONFIG_RT_USING_SAL is not set
-# end of Socket abstraction layer
 
 #
 # Network interface device
 #
 # CONFIG_RT_USING_NETDEV is not set
-# end of Network interface device
 
 #
 # light weight TCP/IP stack
 #
 # CONFIG_RT_USING_LWIP is not set
-# end of light weight TCP/IP stack
 
 #
 # AT commands
 #
 # CONFIG_RT_USING_AT is not set
-# end of AT commands
-# end of Network
 
 #
 # VBUS(Virtual Software BUS)
 #
 # CONFIG_RT_USING_VBUS is not set
-# end of VBUS(Virtual Software BUS)
 
 #
 # Utilities
@@ -273,14 +261,11 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_RT_USING_UTEST is not set
 # CONFIG_RT_USING_VAR_EXPORT is not set
 # CONFIG_RT_USING_RT_LINK is not set
-# end of Utilities
-# end of RT-Thread Components
 
 #
 # RT-Thread Utestcases
 #
 # CONFIG_RT_USING_UTESTCASES is not set
-# end of RT-Thread Utestcases
 
 #
 # RT-Thread online packages
@@ -315,17 +300,12 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # Marvell WiFi
 #
 # CONFIG_PKG_USING_WLANMARVELL is not set
-# end of Marvell WiFi
 
 #
 # Wiced WiFi
 #
 # CONFIG_PKG_USING_WLAN_WICED is not set
-# end of Wiced WiFi
-
 # CONFIG_PKG_USING_RW007 is not set
-# end of Wi-Fi
-
 # CONFIG_PKG_USING_COAP is not set
 # CONFIG_PKG_USING_NOPOLL is not set
 # CONFIG_PKG_USING_NETUTILS is not set
@@ -347,8 +327,7 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_JIOT-C-SDK is not set
 # CONFIG_PKG_USING_UCLOUD_IOT_SDK is not set
 # CONFIG_PKG_USING_JOYLINK is not set
-# end of IoT Cloud
-
+# CONFIG_PKG_USING_EZ_IOT_OS is not set
 # CONFIG_PKG_USING_NIMBLE is not set
 # CONFIG_PKG_USING_OTA_DOWNLOADER is not set
 # CONFIG_PKG_USING_IPMSG is not set
@@ -383,7 +362,7 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_LORA_PKT_SNIFFER is not set
 # CONFIG_PKG_USING_HM is not set
 # CONFIG_PKG_USING_SMALL_MODBUS is not set
-# end of IoT - internet of things
+# CONFIG_PKG_USING_NET_SERVER is not set
 
 #
 # security packages
@@ -393,7 +372,6 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_TINYCRYPT is not set
 # CONFIG_PKG_USING_TFM is not set
 # CONFIG_PKG_USING_YD_CRYPTO is not set
-# end of security packages
 
 #
 # language packages
@@ -402,7 +380,6 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_JERRYSCRIPT is not set
 # CONFIG_PKG_USING_MICROPYTHON is not set
 # CONFIG_PKG_USING_PIKASCRIPT is not set
-# end of language packages
 
 #
 # multimedia packages
@@ -414,15 +391,12 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_LVGL is not set
 # CONFIG_PKG_USING_LITTLEVGL2RTT is not set
 # CONFIG_PKG_USING_LV_MUSIC_DEMO is not set
-# end of LVGL: powerful and easy-to-use embedded GUI library
 
 #
 # u8g2: a monochrome graphic library
 #
 # CONFIG_PKG_USING_U8G2_OFFICIAL is not set
 # CONFIG_PKG_USING_U8G2 is not set
-# end of u8g2: a monochrome graphic library
-
 # CONFIG_PKG_USING_OPENMV is not set
 # CONFIG_PKG_USING_MUPDF is not set
 # CONFIG_PKG_USING_STEMWIN is not set
@@ -442,8 +416,9 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 #
 # CONFIG_PKG_USING_PAINTERENGINE is not set
 # CONFIG_PKG_USING_PAINTERENGINE_AUX is not set
-# end of PainterEngine: A cross-platform graphics application framework written in C language
-# end of multimedia packages
+# CONFIG_PKG_USING_MCURSES is not set
+# CONFIG_PKG_USING_TERMBOX is not set
+# CONFIG_PKG_USING_VT100 is not set
 
 #
 # tools packages
@@ -487,7 +462,6 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_SOLAR_TERMS is not set
 # CONFIG_PKG_USING_GAN_ZHI is not set
 # CONFIG_PKG_USING_FDT is not set
-# end of tools packages
 
 #
 # system packages
@@ -499,7 +473,12 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_RT_MEMCPY_CM is not set
 # CONFIG_PKG_USING_RT_KPRINTF_THREADSAFE is not set
 # CONFIG_PKG_USING_RT_VSNPRINTF_FULL is not set
-# end of enhanced kernel services
+
+#
+# POSIX extension functions
+#
+# CONFIG_PKG_USING_POSIX_GETLINE is not set
+# CONFIG_PKG_USING_POSIX_WCWIDTH is not set
 
 #
 # acceleration: Assembly language or algorithmic acceleration packages
@@ -507,14 +486,12 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_QFPLIB_M0_FULL is not set
 # CONFIG_PKG_USING_QFPLIB_M0_TINY is not set
 # CONFIG_PKG_USING_QFPLIB_M3 is not set
-# end of acceleration: Assembly language or algorithmic acceleration packages
 
 #
 # CMSIS: ARM Cortex-M Microcontroller Software Interface Standard
 #
 # CONFIG_PKG_USING_CMSIS_5 is not set
 # CONFIG_PKG_USING_CMSIS_RTOS2 is not set
-# end of CMSIS: ARM Cortex-M Microcontroller Software Interface Standard
 
 #
 # Micrium: Micrium software products porting for RT-Thread
@@ -525,8 +502,6 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_UC_CLK is not set
 # CONFIG_PKG_USING_UC_COMMON is not set
 # CONFIG_PKG_USING_UC_MODBUS is not set
-# end of Micrium: Micrium software products porting for RT-Thread
-
 # CONFIG_RT_USING_ARDUINO is not set
 # CONFIG_PKG_USING_GUIENGINE is not set
 # CONFIG_PKG_USING_CAIRO is not set
@@ -556,11 +531,10 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_TLSF is not set
 # CONFIG_PKG_USING_EVENT_RECORDER is not set
 # CONFIG_PKG_USING_ARM_2D is not set
-# CONFIG_PKG_USING_WCWIDTH is not set
 # CONFIG_PKG_USING_MCUBOOT is not set
 # CONFIG_PKG_USING_TINYUSB is not set
 # CONFIG_PKG_USING_USB_STACK is not set
-# end of system packages
+# CONFIG_PKG_USING_LUATOS_SOC is not set
 
 #
 # peripheral libraries and drivers
@@ -634,10 +608,10 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_BLUETRUM_SDK is not set
 # CONFIG_PKG_USING_MISAKA_AT24CXX is not set
 # CONFIG_PKG_USING_MISAKA_RGB_BLING is not set
+# CONFIG_PKG_USING_LORA_MODEM_DRIVER is not set
 # CONFIG_PKG_USING_BL_MCU_SDK is not set
 # CONFIG_PKG_USING_SOFT_SERIAL is not set
 # CONFIG_PKG_USING_MB85RS16 is not set
-# end of peripheral libraries and drivers
 
 #
 # AI packages
@@ -651,7 +625,6 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_ULAPACK is not set
 # CONFIG_PKG_USING_QUEST is not set
 # CONFIG_PKG_USING_NAXOS is not set
-# end of AI packages
 
 #
 # miscellaneous packages
@@ -664,7 +637,6 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_FILESYSTEM_SAMPLES is not set
 # CONFIG_PKG_USING_NETWORK_SAMPLES is not set
 # CONFIG_PKG_USING_PERIPHERAL_SAMPLES is not set
-# end of samples: kernel and components samples
 
 #
 # entertainment: terminal games and other interesting software packages
@@ -678,8 +650,7 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_SNAKE is not set
 # CONFIG_PKG_USING_TETRIS is not set
 # CONFIG_PKG_USING_DONUT is not set
-# end of entertainment: terminal games and other interesting software packages
-
+# CONFIG_PKG_USING_COWSAY is not set
 # CONFIG_PKG_USING_LIBCSV is not set
 # CONFIG_PKG_USING_OPTPARSE is not set
 # CONFIG_PKG_USING_FASTLZ is not set
@@ -701,17 +672,11 @@ CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 # CONFIG_PKG_USING_VI is not set
 # CONFIG_PKG_USING_KI is not set
 # CONFIG_PKG_USING_ARMv7M_DWT is not set
-# CONFIG_PKG_USING_VT100 is not set
 # CONFIG_PKG_USING_UKAL is not set
 # CONFIG_PKG_USING_CRCLIB is not set
 # CONFIG_PKG_USING_LWGPS is not set
 # CONFIG_PKG_USING_STATE_MACHINE is not set
-# CONFIG_PKG_USING_MCURSES is not set
-# CONFIG_PKG_USING_COWSAY is not set
-# CONFIG_PKG_USING_TERMBOX is not set
-# end of miscellaneous packages
-# end of RT-Thread online packages
-
+# CONFIG_PKG_USING_DESIGN_PATTERN is not set
 CONFIG_SOC_SIMULATOR=y
 CONFIG_RT_USING_DFS_WINSHAREDIR=y
 # CONFIG_BSP_USING_LVGL is not set
diff --git a/bsp/simulator/Kconfig b/bsp/simulator/Kconfig
index 2222df6c938f02a1c4fb3a9c433860b9f99ef995..63832e878f4eead9e136cc83c72cf1e788c169e2 100644
--- a/bsp/simulator/Kconfig
+++ b/bsp/simulator/Kconfig
@@ -24,11 +24,10 @@ config SOC_SIMULATOR
     select RT_USING_USER_MAIN
     default y
 
-if RT_USING_DFS
-    config RT_USING_DFS_WINSHAREDIR
-        bool "Enable shared file system between windows"
-        default n
-endif
+config RT_USING_DFS_WINSHAREDIR
+    bool "Enable shared file system between windows"
+    select RT_USING_POSIX_FS
+    default n
 
 config BSP_USING_LVGL
     bool "Enable LVGL for LCD"
@@ -44,5 +43,4 @@ if BSP_USING_LVGL
     config BSP_LCD_HEIGHT
         int "LCD height"
         default 480
-
 endif
diff --git a/bsp/simulator/drivers/SConscript b/bsp/simulator/drivers/SConscript
index d5a82f93b75544a3e557e1711778639149efe874..8f0c9275ff282f67e23d936713c6801eb730a88c 100644
--- a/bsp/simulator/drivers/SConscript
+++ b/bsp/simulator/drivers/SConscript
@@ -8,8 +8,6 @@ LIBS = []
 LIBPATH = []
 CPPPATH = [cwd]
 
-CPPDEFINES = ['_CRT_DECLARE_NONSTDC_NAMES=0'] # avoid to conflict with the inherent STDC in VS
-
 # remove no need file.
 if GetDepend('PKG_USING_GUIENGINE') == False:
     SrcRemove(src, 'sdl_fb.c')
@@ -32,8 +30,7 @@ if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_MODULE') == False:
 if sys.platform[0:5]=="linux": #check whether under linux
     SrcRemove(src, ['module_win32.c', 'dfs_win32.c'])
 
-group = DefineGroup('Drivers', src, depend = [''],
-                    CPPPATH = CPPPATH, LIBS=LIBS, LIBPATH=LIBPATH, CPPDEFINES = CPPDEFINES)
+group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH, LIBS=LIBS, LIBPATH=LIBPATH)
 
 list = os.listdir(cwd)
 for item in list:
diff --git a/bsp/simulator/drivers/dfs_win32.c b/bsp/simulator/drivers/dfs_win32.c
index 230425f3e4701e713514b70bec4cd0e7bd7e3ecd..95bfba030f7a34853835743949ef5d9fe91cc09b 100644
--- a/bsp/simulator/drivers/dfs_win32.c
+++ b/bsp/simulator/drivers/dfs_win32.c
@@ -194,7 +194,7 @@ static int dfs_win32_open(struct dfs_fd *file)
         wdirp->start = malloc(len); //not rt_malloc!
         wdirp->end = wdirp->curr = wdirp->start;
         wdirp->end += len;
-        strncpy(wdirp->curr, wdirp->finddata.name, len);
+        rt_strncpy(wdirp->curr, wdirp->finddata.name, len);
 
         file->data = (void *)wdirp;
         rt_free(file_path);
@@ -361,7 +361,7 @@ static int dfs_win32_getdents(struct dfs_fd *file, struct dirent *dirp, rt_uint3
             wdirp->start = realloc(wdirp->start, wdirp->end - wdirp->start + name_len);
             wdirp->curr = wdirp->start + (wdirp->curr - old_start);
             wdirp->end = wdirp->curr + name_len;
-            strcpy(wdirp->curr, wdirp->finddata.name);
+            rt_strcpy(wdirp->curr, wdirp->finddata.name);
         }
         else
         {
diff --git a/bsp/simulator/rtconfig.h b/bsp/simulator/rtconfig.h
index ffb8bed62e721005918dbfe980281931788466be..889457dce4c50c4d341df8edc19691636555e24a 100755
--- a/bsp/simulator/rtconfig.h
+++ b/bsp/simulator/rtconfig.h
@@ -1,7 +1,8 @@
 #ifndef RT_CONFIG_H__
 #define RT_CONFIG_H__
 
-/* Generated by Kconfiglib (https://github.com/ulfalizer/Kconfiglib) */
+/* Automatically generated file; DO NOT EDIT. */
+/* RT-Thread Configuration */
 
 /* RT-Thread Kernel */
 
@@ -18,7 +19,6 @@
 
 /* kservice optimization */
 
-/* end of kservice optimization */
 #define RT_DEBUG
 #define RT_DEBUG_COLOR
 
@@ -29,7 +29,6 @@
 #define RT_USING_EVENT
 #define RT_USING_MAILBOX
 #define RT_USING_MESSAGEQUEUE
-/* end of Inter-Thread communication */
 
 /* Memory Management */
 
@@ -37,7 +36,6 @@
 #define RT_USING_SMALL_MEM
 #define RT_USING_SMALL_MEM_AS_HEAP
 #define RT_USING_HEAP
-/* end of Memory Management */
 
 /* Kernel Device Object */
 
@@ -45,9 +43,7 @@
 #define RT_USING_CONSOLE
 #define RT_CONSOLEBUF_SIZE 128
 #define RT_CONSOLE_DEVICE_NAME "console"
-/* end of Kernel Device Object */
 #define RT_VER_NUM 0x40100
-/* end of RT-Thread Kernel */
 
 /* RT-Thread Components */
 
@@ -58,7 +54,6 @@
 
 /* C++ features */
 
-/* end of C++ features */
 
 /* Command shell */
 
@@ -75,7 +70,6 @@
 #define MSH_USING_BUILT_IN_COMMANDS
 #define FINSH_USING_DESCRIPTION
 #define FINSH_ARG_MAX 10
-/* end of Command shell */
 
 /* Device virtual file system */
 
@@ -100,9 +94,7 @@
 #define RT_DFS_ELM_MAX_SECTOR_SIZE 512
 #define RT_DFS_ELM_REENTRANT
 #define RT_DFS_ELM_MUTEX_TIMEOUT 3000
-/* end of elm-chan's FatFs, Generic FAT Filesystem Module */
 #define RT_USING_DFS_DEVFS
-/* end of Device virtual file system */
 
 /* Device Drivers */
 
@@ -114,57 +106,42 @@
 
 /* Using USB */
 
-/* end of Using USB */
-/* end of Device Drivers */
 
 /* POSIX layer and C standard library */
 
-#define RT_LIBC_USING_TIME
 #define RT_LIBC_DEFAULT_TIMEZONE 8
 
 /* POSIX (Portable Operating System Interface) layer */
 
+#define RT_USING_POSIX_FS
 
 /* Interprocess Communication (IPC) */
 
 
 /* Socket is in the 'Network' category */
 
-/* end of Interprocess Communication (IPC) */
-/* end of POSIX (Portable Operating System Interface) layer */
-/* end of POSIX layer and C standard library */
-
 /* Network */
 
 /* Socket abstraction layer */
 
-/* end of Socket abstraction layer */
 
 /* Network interface device */
 
-/* end of Network interface device */
 
 /* light weight TCP/IP stack */
 
-/* end of light weight TCP/IP stack */
 
 /* AT commands */
 
-/* end of AT commands */
-/* end of Network */
 
 /* VBUS(Virtual Software BUS) */
 
-/* end of VBUS(Virtual Software BUS) */
 
 /* Utilities */
 
-/* end of Utilities */
-/* end of RT-Thread Components */
 
 /* RT-Thread Utestcases */
 
-/* end of RT-Thread Utestcases */
 
 /* RT-Thread online packages */
 
@@ -175,83 +152,63 @@
 
 /* Marvell WiFi */
 
-/* end of Marvell WiFi */
 
 /* Wiced WiFi */
 
-/* end of Wiced WiFi */
-/* end of Wi-Fi */
 
 /* IoT Cloud */
 
-/* end of IoT Cloud */
-/* end of IoT - internet of things */
 
 /* security packages */
 
-/* end of security packages */
 
 /* language packages */
 
-/* end of language packages */
 
 /* multimedia packages */
 
 /* LVGL: powerful and easy-to-use embedded GUI library */
 
-/* end of LVGL: powerful and easy-to-use embedded GUI library */
 
 /* u8g2: a monochrome graphic library */
 
-/* end of u8g2: a monochrome graphic library */
 
 /* PainterEngine: A cross-platform graphics application framework written in C language */
 
-/* end of PainterEngine: A cross-platform graphics application framework written in C language */
-/* end of multimedia packages */
 
 /* tools packages */
 
-/* end of tools packages */
 
 /* system packages */
 
 /* enhanced kernel services */
 
-/* end of enhanced kernel services */
+
+/* POSIX extension functions */
+
 
 /* acceleration: Assembly language or algorithmic acceleration packages */
 
-/* end of acceleration: Assembly language or algorithmic acceleration packages */
 
 /* CMSIS: ARM Cortex-M Microcontroller Software Interface Standard */
 
-/* end of CMSIS: ARM Cortex-M Microcontroller Software Interface Standard */
 
 /* Micrium: Micrium software products porting for RT-Thread */
 
-/* end of Micrium: Micrium software products porting for RT-Thread */
-/* end of system packages */
 
 /* peripheral libraries and drivers */
 
-/* end of peripheral libraries and drivers */
 
 /* AI packages */
 
-/* end of AI packages */
 
 /* miscellaneous packages */
 
 /* samples: kernel and components samples */
 
-/* end of samples: kernel and components samples */
 
 /* entertainment: terminal games and other interesting software packages */
 
-/* end of entertainment: terminal games and other interesting software packages */
-/* end of miscellaneous packages */
-/* end of RT-Thread online packages */
 #define SOC_SIMULATOR
 #define RT_USING_DFS_WINSHAREDIR
 #include "rtconfig_project.h"
diff --git a/bsp/simulator/rtconfig_project.h b/bsp/simulator/rtconfig_project.h
index 098255741e467cfc74fa6579817536be3950a1b1..12892e9a987a1245e62a534ccdebd61c72faf7cf 100644
--- a/bsp/simulator/rtconfig_project.h
+++ b/bsp/simulator/rtconfig_project.h
@@ -13,10 +13,11 @@
 #define RT_HEAP_SIZE   (1024*1024*8)
 
 #if defined(_MSC_VER)
-#define NORESOURCE  //RT_VESRION in winuser.h
-#define _CRT_ERRNO_DEFINED  //errno macro redefinition
-#define _INC_WTIME_INL//dfs_elm.c time.h conflicts with wtime.inl
-#define _INC_TIME_INL //dfs_elm.c time.h conflicts with wtime.inl
+#define NORESOURCE  /* RT_VESRION in winuser.h */
+#define _CRT_ERRNO_DEFINED  /* errno macro redefinition */
+#define _INC_WTIME_INL /* dfs_elm.c time.h conflicts with wtime.inl */
+#define _INC_TIME_INL /* dfs_elm.c time.h conflicts with wtime.inl */
+#define _CRT_DECLARE_NONSTDC_NAMES 0 /* avoid to conflict with the inherent STDC in VS */
 
 /* disable some warning in MSC */
 #pragma warning(disable:4273)   /* to ignore: warning C4273: inconsistent dll linkage */
diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index 55c60d716e44437e24f2e945f604c1e0e55897dd..ce3f3a3c087d2386a27f6161abcd1af78562e307 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -42,20 +42,14 @@ struct timezone
     int tz_dsttime;       /* type of dst correction */
 };
 
-/*
- * Structure returned by gettimeofday(2) system call,
- * and used in other calls.
- */
-#ifndef _TIMEVAL_DEFINED
+#if !defined(_TIMEVAL_DEFINED) && !defined(_WIN32)
 #define _TIMEVAL_DEFINED
-#if !defined(_WIN32)
 struct timeval
 {
     time_t      tv_sec;     /* seconds */
     suseconds_t tv_usec;    /* and microseconds */
 };
 #endif
-#endif /* _TIMEVAL_DEFINED */
 
 #if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && \
     !(defined(__ICCARM__) && (__VER__ >= 8010001)) && \
@@ -73,6 +67,16 @@ int gettimeofday(struct timeval *tv, struct timezone *tz);
 int settimeofday(const struct timeval *tv, const struct timezone *tz);
 #if defined(__ARMCC_VERSION) || defined (__ICCARM__)
 struct tm *gmtime_r(const time_t *timep, struct tm *r);
+#elif defined(_WIN32)
+struct tm* gmtime_r(const time_t* timep, struct tm* r);
+struct tm* gmtime(const time_t* t);
+struct tm* localtime_r(const time_t* t, struct tm* r);
+struct tm* localtime(const time_t* t);
+time_t mktime(struct tm* const t);
+char* asctime_r(const struct tm* t, char* buf);
+char* ctime_r(const time_t* tim_p, char* result);
+char* ctime(const time_t* tim_p);
+time_t time(time_t* t);
 #endif
 
 #ifdef RT_USING_POSIX_CLOCK
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 256268a3fc7cd4f5fdc06812cb4fb8b4efc0ef5f..d5442738a87b19936c1a3381fc33ac238d3c605b 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -217,7 +217,7 @@ struct tm* localtime_r(const time_t* t, struct tm* r)
 {
     time_t local_tz;
 
-    local_tz = *t + tz_get() * 3600;
+    local_tz = *t + (time_t)tz_get() * 3600;
     return gmtime_r(&local_tz, r);
 }
 RTM_EXPORT(localtime_r);
@@ -234,7 +234,7 @@ time_t mktime(struct tm * const t)
     time_t timestamp;
 
     timestamp = timegm(t);
-    timestamp = timestamp - 3600 * tz_get();
+    timestamp = timestamp - 3600 * (time_t)tz_get();
     return timestamp;
 }
 RTM_EXPORT(mktime);
@@ -367,7 +367,7 @@ time_t timegm(struct tm * const t)
 {
     register time_t day;
     register time_t i;
-    register time_t years = t->tm_year - 70;
+    register time_t years = (time_t)t->tm_year - 70;
 
     if (t->tm_sec > 60)
     {