Diff: NTPClient.h

Revision:

2:a9d1a9c92927

Parent:

1:a22e390c70b3

Child:

5:3df13e2e928e

--- a/NTPClient.h	Mon Dec 12 02:33:21 2011 +0000
+++ b/NTPClient.h	Mon Dec 12 11:41:24 2011 +0000
@@ -22,11 +22,54 @@
 
 #include "SimpleSocket.h"
 
+/**
+ * NTP Client interface to adjust RTC
+ */
 class NTPClient {
 public:
-    NTPClient(char *server = "pool.ntp.org", float timeout = 3.0)
-            : server(server), timeout(timeout) {}
-            
+    /**
+     * creates an NTPClient object
+     *
+     * @param server NTP server host name
+     * @param timeout max wait time for connection
+     */
+    NTPClient(char *server = "pool.ntp.org", float timeout = 3.0) : timeout(timeout) {
+        strncpy(this->server, server, sizeof(this->server));
+    }
+
+    /**
+     * creates an NTPClient object from a config file
+     *
+     * @param filename name for the configuration file containing server host name and timeout
+     * @param verbose if true display debug info
+     */
+    static NTPClient create(char *filename, bool verbose = false) {
+        char server[32] = "pool.ntp.org";
+        float timeout = 3.0;
+
+        if (filename) {
+            char path[32];
+            LocalFileSystem local("local");
+            sprintf(path, "/local/%s", filename);
+            if (FILE *fp = fopen(path, "r")) {
+                Utils::fgetValues(fp, "ntp-server:%s", server);
+                Utils::fgetValues(fp, "ntp-timeout:%f", &timeout);
+                fclose(fp);
+                if (verbose) {
+                    printf("ntp-server:%s\n", server);
+                    printf("ntp-timeout:%2.1f\n", timeout);
+                }
+            }
+        }
+
+        return NTPClient(server, timeout);
+    }
+
+    /**
+     * adjusts RTC
+     *
+     * @returns true if succeeded
+     */
     bool setTime() {
         Timer timer;
         timer.start();
@@ -51,6 +94,6 @@
     }
 
 private:
-    char *server;
+    char server[32];
     float timeout;
 };
\ No newline at end of file