Added 'Over' Detection (Invalid Measurement)

.gitignore

@@ -0,0 +1,5 @@
+config.*
+*.o
+*.la
+*.lo
+.*

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;
 

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)
 		{

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 */