diff --git a/bsp/simulator/applications/platform.c b/bsp/simulator/applications/platform.c
index 1b7127e370a1c14392924ecd5200108a4aae9c8b..815c189e40d3e7ba04e76a121971ce5b864bd49f 100644
--- a/bsp/simulator/applications/platform.c
+++ b/bsp/simulator/applications/platform.c
@@ -11,6 +11,14 @@
 
 #include <shell.h>
 
+#ifdef RT_USING_POSIX
+#error "simulator does not support RT_USING_POSIX"
+#endif
+
+#ifdef RT_USING_LIBC
+#error "simulator does not support RT_USING_LIBC"
+#endif
+
 int platform_init(void)
 {
 #ifdef RT_USING_LWIP
diff --git a/bsp/simulator/drivers/board.c b/bsp/simulator/drivers/board.c
index 17339d4e1a98dbc8627a87312b098242227a6537..0516af6f799aab6feb2d262a0db2862d4a852c2d 100755
--- a/bsp/simulator/drivers/board.c
+++ b/bsp/simulator/drivers/board.c
@@ -110,4 +110,10 @@ int rt_hw_board_init(void)
 #endif
     return 0;
 }
+
+void rt_hw_us_delay(rt_uint32_t usec)
+{
+
+}
+
 /*@}*/
diff --git a/components/libc/compilers/common/nogcc/sys/select.h b/components/libc/compilers/common/nogcc/sys/select.h
index 575ad3a1b59f0fea8b479c60891bdef45f44060e..02fb77dd89b17779a09be546b7461c1a3c84a6c3 100644
--- a/components/libc/compilers/common/nogcc/sys/select.h
+++ b/components/libc/compilers/common/nogcc/sys/select.h
@@ -15,6 +15,10 @@
 #include <sys/types.h>
 #include <sys/time.h>
 
+#ifdef _WIN32
+#include <winsock.h>
+#endif
+
 #ifndef  FD_SETSIZE
 #define  FD_SETSIZE  32
 #endif
@@ -26,16 +30,17 @@
 #define FD_SETSIZE      DFS_FD_MAX
 #endif /* SAL_USING_POSIX */
 
-#define   NBBY    8       /* number of bits in a byte */
-
 typedef long    fd_mask;
 
+#ifndef _WIN32
+#ifndef _SYS_TYPES_FD_SET /* MIPS */
+
+#define   NBBY    8       /* number of bits in a byte */
 #define   NFDBITS (sizeof (fd_mask) * NBBY)   /* bits per mask */
 #ifndef   howmany
 #define   howmany(x,y)    (((x)+((y)-1))/(y))
 #endif
 
-#ifndef _SYS_TYPES_FD_SET /* MIPS */
 typedef struct _types_fd_set {
     fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
 } _types_fd_set;
@@ -48,5 +53,6 @@ typedef struct _types_fd_set {
 #endif /* _SYS_TYPES_FD_SET */
 
 int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
+#endif /* _WIN32 */
 
 #endif /* __SYS_SELECT_H__ */
diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
index b926a7187532ab332deedf17a586a3b0e6d68db2..04f73837bcfdd90dcca9087e74fe814518769d2e 100644
--- a/components/libc/compilers/common/sys/ioctl.h
+++ b/components/libc/compilers/common/sys/ioctl.h
@@ -15,6 +15,10 @@
 #include <dfs_posix.h>
 #endif
 
+#ifdef _WIN32
+#include <winsock.h>
+#endif
+
 struct winsize {
     unsigned short ws_row;
     unsigned short ws_col;
@@ -35,8 +39,8 @@ struct winsize {
 
 #define FIONREAD    _IOR('f', 127, int) /* get # bytes to read */
 #define FIONBIO     _IOW('f', 126, int) /* set/clear non-blocking i/o */
-#define FIONWRITE   _IOR('f', 121, int) /* get # bytes outstanding in send queue */
 #endif
+#define FIONWRITE   _IOR('f', 121, int) /* get # bytes outstanding in send queue */
 
 #define TCGETS      0x5401
 #define TCSETS      0x5402
diff --git a/components/libc/compilers/gcc/newlib/stdio.c b/components/libc/compilers/gcc/newlib/stdio.c
index baccafad871de329ab34e95c3f6841640083a4eb..1875d50e3f443be2504a63768bed8b078b315393 100644
--- a/components/libc/compilers/gcc/newlib/stdio.c
+++ b/components/libc/compilers/gcc/newlib/stdio.c
@@ -72,7 +72,8 @@ int libc_stdio_set_console(const char* device_name, int mode)
     return -1;
 }
 
-int libc_stdio_get_console(void) {
+int libc_stdio_get_console(void)
+{
     if (std_console)
         return fileno(std_console);
     else