Some improvements with dbg levels

FossilOrigin-Name: 4f1f8f238cb3fd097504bfba3b51805d359135256160fe8fdba34908495ec50b

src/cw/cw_dbg_set_level.c

@@ -0,0 +1,26 @@
+
+#include "dbg.h"
+
+/**
+  * Set debug level
+  * @param level debug level to set, allowed values are enumberated in #cw_dbg_levels structure.
+  * @param on 1: turns the specified debug level on, 0: turns the specified debug level off.
+  */
+
+void cw_dbg_set_level (int level, int on)
+{
+	switch (level) {
+		case DBG_ALL:
+			if (on)
+				cw_dbg_opt_level = 0xffffffff;
+			else
+				cw_dbg_opt_level = 0;
+			break;
+		default:
+			if (on)
+				cw_dbg_opt_level |= (1 << (level));
+			else 
+				cw_dbg_opt_level &= (0xffffffff) ^ (1 << (level));
+	}
+}
+