fix Windows build

src/hsdaoh_file.c

@@ -32,6 +32,7 @@
 #include <io.h>
 #include <fcntl.h>
 #include "getopt/getopt.h"
+#define usleep(t) Sleep((t)/1000)
 #endif
 
 #include "hsdaoh.h"

src/hsdaoh_tcp.c

@@ -40,6 +40,7 @@
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #include "getopt/getopt.h"
+#define usleep(t) Sleep((t)/1000)
 #endif
 
 #include <pthread.h>

src/hsdaoh_test.c

@@ -43,6 +43,7 @@
 #else
 #include <windows.h>
 #include "getopt/getopt.h"
+#define usleep(t) Sleep((t)/1000)
 #endif
 
 #include "hsdaoh.h"

src/libhsdaoh.c

@@ -31,20 +31,17 @@
 #include <stdbool.h>
 #ifndef _WIN32
 #include <unistd.h>
-#endif
+#include <endian.h>
-
+#else
-#ifdef _MSC_VER
 #include <windows.h>
 #define usleep(t) Sleep((t)/1000)
-#else
+#define le32toh(x) (x)
-#include <unistd.h>
+#define le16toh(x) (x)
 #endif
 
 #include <inttypes.h>
-#include <endian.h>
 #include <libusb.h>
 #include <libuvc/libuvc.h>
-//#include <math.h>
 #include <hsdaoh_i2c.h>
 #include <hsdaoh.h>
 #include <crc.h>