Diff: bricks/trace.cpp

Revision:

26:dce30a5341bb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bricks/trace.cpp	Sat May 19 14:10:17 2018 +0000
@@ -0,0 +1,54 @@
+// trace.cpp - trace a message depending on verbose level
+//
+
+#include <stdio.h>
+#include "bricks/trace.h"
+
+   static Serial pc(USBTX, USBRX);     // serial port to PC terminal
+
+//==============================================================================
+// Managing the Verbose Lewvel
+//==============================================================================
+
+   static int threshold = 0;           // verbose threshold, no verbose messages
+  
+   void verbose(O&o, int level)        // setup verbose level               
+   {
+      threshold = level;               // update verbose threshold
+   }
+   
+//==============================================================================
+// Printing Trace Messages
+//==============================================================================
+
+   void trace(O&o, int level, const char *msg) // trace a message
+   {
+      if (level <= threshold)          // update verbose threshold
+      {  char buf[2] = " ";            // must be terminated
+         
+         for (; *msg; msg++)
+         {  buf[0] = *msg;  
+            printf(buf);
+            if (*msg == '\n')
+            {  buf[0] = '\r';          // auto adding carriage return
+               printf(buf);
+            }
+         }
+      }
+   }
+   
+   void trace(O&o, int level, const char*format, int value)
+   {
+       char buf[80];
+       if (strlen(format) > 70)
+          trace(o,level," *** buffer overflow *** ");
+       else
+       {  sprintf(buf,format,value);
+          trace(o,level,buf);
+       }
+   }
+
+   void traceln(O&o, int level, const char*msg)  // trace with CR & LF
+   {
+       trace(o,level,msg);  trace(o,level,"\r\n");
+   }