better strerror() for windows usb issues

diff --git a/ykcore/ykcore_windows.c b/ykcore/ykcore_windows.c
index c82ae8507c8b9fcf3b6b00468a9e353b0b89c232..d91ef45045521545041c1910b84f2812448e2924 100644 (file)
--- a/ykcore/ykcore_windows.c
+++ b/ykcore/ykcore_windows.c
@@ -182,5 +182,8 @@ int _ykusb_write(void *dev, int report_type, int report_number,
 
 const char *_ykusb_strerror(void)
 {
-       return "USB error\n";
+       static char buf[1024];
+       FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0,
+                       buf, sizeof(buf), NULL);
+       return buf;
 }