From 7b05d4d56524cf769d4c6e85974a6dbeeaa7871f Mon Sep 17 00:00:00 2001
From: Andreas Messer <andi@surveycorner.de>
Date: Thu, 22 Dec 2011 12:27:08 +0100
Subject: [PATCH] Added 'Over' Detection (Invalid Measurement)

---
 .gitignore         |  5 +++++
 src/libvc-gdm70x.c |  4 ++++
 src/vc-gdm70x.c    | 13 +++++++++++--
 src/vc-gdm70x.h    |  3 ++-
 4 files changed, 22 insertions(+), 3 deletions(-)
 create mode 100644 .gitignore

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4f56c9b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+config.*
+*.o
+*.la
+*.lo
+.*
diff --git a/src/libvc-gdm70x.c b/src/libvc-gdm70x.c
index 73cc341..9e236a0 100644
--- a/src/libvc-gdm70x.c
+++ b/src/libvc-gdm70x.c
@@ -395,6 +395,10 @@ vc_gdm70x_parsevalue(const char* str, struct vc_gdm70x_data* data_p)
     case 'u': data_p->mult = MICRO; break;
     default:  data_p->mult = NONE;  break;
     }
+
+  /* check for overvoltage/autorange */
+  if (str[3] == '4')
+    data_p->mult = OVER;
   
   data_p->unit=UNKNOWN;
 
diff --git a/src/vc-gdm70x.c b/src/vc-gdm70x.c
index a2562df..094a01d 100644
--- a/src/vc-gdm70x.c
+++ b/src/vc-gdm70x.c
@@ -24,6 +24,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <getopt.h>
 #include <assert.h>
 #include <time.h>
+#include <stdlib.h>
 
 const struct option longopts [] = {
   { "device", required_argument, 0, 'd' },
@@ -119,8 +120,16 @@ int print_values(struct vc_gdm70x* gdm_p, void* ptr)
 
 	  switch(c) 
 	    {
-	    case 'D': fprintf(stdout,"%.3f",data_p->value); break;
-	    case 'M': fputc(data_p->mult,stdout); break;
+	    case 'D': 
+        if (data_p->mult != OVER)
+          fprintf(stdout,"%.3f",data_p->value);
+        else
+          fputs("OVER",stdout);
+        break;
+	    case 'M': 
+        if (data_p->mult != OVER)
+          fputc(data_p->mult,stdout);
+        break;
 	    case 'U':
 	      switch(data_p->unit)
 		{
diff --git a/src/vc-gdm70x.h b/src/vc-gdm70x.h
index 37ca63a..7abdcd7 100644
--- a/src/vc-gdm70x.h
+++ b/src/vc-gdm70x.h
@@ -48,7 +48,8 @@ enum vc_mult {
 	       NONE=' ',  
 	       MILLI='m', 
 	       MICRO='u', 
-         NANO='n'
+         NANO='n',
+         OVER='#',
 };
 
 /* struct containing the received data from one channel */