From a5a84c429ac548eafd1d3903225a4ce72104201f Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@jaybee.cz>
Date: 周三, 22 4月 2015 03:50:26 +0800
Subject: [PATCH] Support RESPONSE MESSAGE UNIT SEPARATOR, issue #21

---
 libscpi/inc/scpi/config.h |   23 ++++++++++++++++++-----
 1 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/libscpi/inc/scpi/config.h b/libscpi/inc/scpi/config.h
index 703465d..811d5a4 100644
--- a/libscpi/inc/scpi/config.h
+++ b/libscpi/inc/scpi/config.h
@@ -63,6 +63,12 @@
 #define HAVE_STRNICMP           0
 #endif
 
+/* AVR libc */
+#if defined(__AVR__)
+#include <stdlib.h>
+#define HAVE_DTOSTRE            1
+#endif
+
 /* ======== test strnlen ======== */
 #ifndef HAVE_STRNLEN
 #define HAVE_STRNLEN            1
@@ -78,20 +84,27 @@
 
 /* define local macros depending on existance of strnlen */
 #if HAVE_STRNLEN
-#define SCPI_strnlen(s, l)	strnlen((s), (l))
+#define SCPIDEFINE_strnlen(s, l)	strnlen((s), (l))
 #else
-#define SCPI_strnlen(s, l)	BSD_strnlen((s), (l))
+#define SCPIDEFINE_strnlen(s, l)	BSD_strnlen((s), (l))
 #endif
 
 /* define local macros depending on existance of strncasecmp and strnicmp */
 #if HAVE_STRNCASECMP
-#define SCPI_strncasecmp(s1, s2, l)	strncasecmp((s1), (s2), (l))
+#define SCPIDEFINE_strncasecmp(s1, s2, l) strncasecmp((s1), (s2), (l))
 #elif HAVE_STRNICMP
-#define SCPI_strncasecmp(s1, s2, l)     strnicmp((s1), (s2), (l))
+#define SCPIDEFINE_strncasecmp(s1, s2, l) strnicmp((s1), (s2), (l))
 #else
-#define SCPI_strncasecmp(s1, s2, l)	OUR_strncasecmp((s1), (s2), (l))
+#define SCPIDEFINE_strncasecmp(s1, s2, l) OUR_strncasecmp((s1), (s2), (l))
 #endif
 
+#if HAVE_DTOSTRE
+#define SCPIDEFINE_doubleToStr(v, s, l) strlen(dtostre((v), (s), 6, DTOSTR_PLUS_SIGN | DTOSTR_ALWAYS_SIGN | DTOSTR_UPPERCASE))
+#else
+#define SCPIDEFINE_doubleToStr(v, s, l) snprintf((s), (l), "%lg", (v))
+#endif
+
+
 #ifdef	__cplusplus
 }
 #endif

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