Makefile

Makefile

+CXXFLAGS = -O3
+EXE = gpio-analyser
+SRC = main.cpp gpio-raw.cpp
+OBJS = $(SRC:.cpp=.o)
+
+${EXE}: ${OBJS}
+	${LINK.cpp} ${OBJS} ${OUTPUT_OPTION}
+
+clean:
+	rm -rf ${OBJS}
+	rm -rf ${EXE}

main.c → main.cpp

   unsigned count = 0;
   std::cout << "Ready to sniff. Press enter...";
   getchar();
+
   signal(SIGINT, signal_handler);
   gettimeofday(&t1, NULL);
     for (; count < n; ++count)
     }
   gettimeofday(&t2, NULL);
   signal(SIGINT, SIG_DFL);
-  std::cout << "Saving file..." << std::endl;
-  int fd = open("gpio.out", O_CREAT | O_WRONLY);
-  write(fd, (void*)v, count * sizeof(*v));
-  close(fd);
+
   unsigned long long ut1 = (__suseconds_t)(1000000L * t1.tv_sec + t1.tv_usec);
   unsigned long long ut2 = (__suseconds_t)(1000000L * t2.tv_sec + t2.tv_usec);
   unsigned long long diff = ut2 - ut1;
   double mhz = (1000000.0 / unit) / 1000000.0;
   std::cout << "count: " << count << " diff: " << diff << " unit: "
     << unit << " Mhz: " << mhz << std::endl;
+
+  std::cout << "Saving file..." << std::endl;
+  int fd = open("gpio.out", O_CREAT | O_WRONLY);
+  write(fd, (void*)v, count * sizeof(*v));
+  close(fd);
   return 0;
 }