Update logger with skeleton

src/logger/logger.cpp

@@ -0,0 +1,28 @@
+// Serial logger class
+
+// Standard defines
+#include <stdio.h>
+#include <iostream>
+#include <math.h>
+#include <string.h>
+
+// Ros defines
+#include "ros/ros.h"
+
+using namespace std;
+
+class Logger {
+    // function that writes buf to out_file.
+    // !0 == failure; 0 == success
+    int append_to_file(uint8_t *buf, char *out_file);
+
+    // returns formatted filename with prefix and current time.
+    // e.g. g_start_time = 12 Feb 13:01, prefix = "buffer_output", extension = ".txt"
+    // returns : "buffer_output_12_Feb_13:01.txt"
+    // Code will figure out if extension has a "." in it
+    char *file_name_from_time(time_t *current_time, char *prefix, char *extension);
+
+    void log(char *msg, int ros_code);
+
+    char *parse_packet(uint8_t *buf);
+};