Add wchar_t type; Add LPC17xx CAN driver from Lzyy; Fix serial bug reported by Lzyy

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3775 42af7a65-404d-4744-a932-0658087f49c3

include/inttypes.h

@@ -40,6 +40,8 @@
  * Included Files
  ****************************************************************************/
  
+#include <stddef.h> /* for wchar_t */
+ 
 /* Notes from www.opengroup.org:
  *
  * "The <inttypes.h> header shall include the <stdint.h> header."
@@ -177,10 +179,8 @@ EXTERN imaxdiv_t imaxdiv(intmax_t, intmax_t);
 EXTERN intmax_t  strtoimax(const char *, char **, int);
 EXTERN uintmax_t strtoumax(const char *, char **, int);
 
-#if 0 /* No wchar_t */
 EXTERN intmax_t  wcstoimax(const wchar_t *, wchar_t **, int);
 EXTERN uintmax_t wcstoumax(const wchar_t *, wchar_t **, int);
-#endif
 
 #undef EXTERN
 #ifdef __cplusplus

include/sys/types.h

@@ -103,6 +103,9 @@
  ****************************************************************************/
 
 #ifndef __ASSEMBLY__
+
+/* Floating point types */
+
 typedef float  float32;
 #ifndef CONFIG_HAVE_DOUBLE
 typedef float  double_t;
@@ -158,6 +161,14 @@ typedef int          pid_t;
 
 typedef unsigned int id_t;
 
+/* Signed integral type of the result of subtracting two pointers */
+
+typedef intptr_t     ptrdiff_t;
+
+/* Wide, 16-bit character types */
+
+typedef uint16_t     wchar_t;
+
 /* blkcnt_t and off_t are signed integer types.
  *
  *   blkcnt_t is used for file block counts.