NTP basic sync (#124)

* NTP basic sync

app_httpd.cpp

@@ -31,6 +31,7 @@
 // Functions from the main .ino
 extern void flashLED(int flashtime);
 extern void setLamp(int newVal);
+extern void printLocalTime(bool extraData);
 
 // External variables declared in the main .ino
 extern char myName[];
@@ -56,6 +57,7 @@ extern bool autoLamp;
 extern bool filesystem;
 extern String critERR;
 extern bool debugData;
+extern bool haveTime;
 extern int sketchSize;
 extern int sketchSpace;
 extern String sketchMD5;
@@ -73,15 +75,14 @@ static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %
 httpd_handle_t stream_httpd = NULL;
 httpd_handle_t camera_httpd = NULL;
 
-
 void serialDump() {
-    Serial.println("\r\nPreferences file: ");
-    dumpPrefs(SPIFFS);
-    if (critERR.length() > 0) {
-        Serial.printf("\r\n\r\nA critical error has occurred when initialising Camera Hardware, see startup megssages\r\n");
-    }
+    Serial.println();
     // Module
     Serial.printf("Name: %s\r\n", myName);
+    if (haveTime) {
+        Serial.print("Time: ");
+        printLocalTime(true);
+    }
     Serial.printf("Firmware: %s (base: %s)\r\n", myVer, baseVersion);
     float sketchPct = 100 * sketchSize / sketchSpace;
     Serial.printf("Sketch Size: %i (total: %i, %.1f%% used)\r\n", sketchSize, sketchSpace, sketchPct);
@@ -123,9 +124,15 @@ void serialDump() {
     Serial.printf("Freq: %i MHz\r\n", ESP.getCpuFreqMHz());
     Serial.printf("Heap: %i, free: %i, min free: %i, max block: %i\r\n", ESP.getHeapSize(), ESP.getFreeHeap(), ESP.getMinFreeHeap(), ESP.getMaxAllocHeap());
     Serial.printf("Psram: %i, free: %i, min free: %i, max block: %i\r\n", ESP.getPsramSize(), ESP.getFreePsram(), ESP.getMinFreePsram(), ESP.getMaxAllocPsram());
+    // Filesystems
     if (filesystem) {
         Serial.printf("Spiffs: %i, used: %i\r\n", SPIFFS.totalBytes(), SPIFFS.usedBytes());
     }
+    Serial.println("Preferences file: ");
+    dumpPrefs(SPIFFS);
+    if (critERR.length() > 0) {
+        Serial.printf("\r\n\r\nA critical error has occurred when initialising Camera Hardware, see startup megssages\r\n");
+    }
     Serial.println();
     return;
 }
@@ -522,6 +529,15 @@ static esp_err_t dump_handler(httpd_req_t *req){
 
     // System
     d+= sprintf(d,"<h2>System</h2>\n");
+    if (haveTime) {
+        struct tm timeinfo;
+        if(getLocalTime(&timeinfo)){
+            char timeStringBuff[50]; //50 chars should be enough
+            strftime(timeStringBuff, sizeof(timeStringBuff), "%H:%M:%S, %A, %B %d %Y", &timeinfo);
+            //print like "const char*"
+            d+= sprintf(d,"Time: %s<br>\n", timeStringBuff);
+        }
+    }
     int64_t sec = esp_timer_get_time() / 1000000;
     int64_t upDays = int64_t(floor(sec/86400));
     int upHours = int64_t(floor(sec/3600)) % 24;

esp32-cam-webserver.ino

@@ -5,6 +5,7 @@
 #include <DNSServer.h>
 #include <ArduinoOTA.h>
 #include "src/parsebytes.h"
+#include "time.h"
 
 
 /* This sketch is a extension/expansion/reork of the 'official' ESP32 Camera example
@@ -170,6 +171,17 @@ const int pwmMax = pow(2,pwmresolution)-1;
     bool otaEnabled = true;
 #endif
 
+#if defined(NTPSERVER)
+    bool haveTime = true;
+    const char* ntpServer = NTPSERVER;
+    const long  gmtOffset_sec = NTP_GMT_OFFSET;
+    const int   daylightOffset_sec = NTP_DST_OFFSET;
+#else
+    bool haveTime = false;
+    const char* ntpServer = "";
+    const long  gmtOffset_sec = 0;
+    const int   daylightOffset_sec = 0;
+#endif
 
 // Critical error string; if set during init (camera hardware failure) it
 // will be returned for all http requests
@@ -226,6 +238,18 @@ void setLamp(int newVal) {
     }
 }
 
+void printLocalTime(bool extraData=false) {
+    struct tm timeinfo;
+    if(!getLocalTime(&timeinfo)){
+        Serial.println("Failed to obtain time");
+    } else {
+        Serial.println(&timeinfo, "%H:%M:%S, %A, %B %d %Y");
+    }
+    if (extraData) {
+        Serial.printf("NTP Server: %s, GMT Offset: %li(s), DST Offset: %i(s)\r\n", ntpServer, gmtOffset_sec, daylightOffset_sec);
+    }
+}
+
 void WifiSetup() {
     // Feedback that we are now attempting to connect
     flashLED(300);
@@ -642,6 +666,15 @@ void setup() {
         Serial.println("OTA is disabled");
     }
 
+    // Set time via NTP server when enabled
+    if (haveTime) {
+        Serial.print("Time: ");
+        configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
+        printLocalTime(true);
+    } else {
+        Serial.println("Time functions disabled");
+    }
+
     // Now we have a network we can start the two http handlers for the UI and Stream.
     startCameraServer(httpPort, streamPort);
 
@@ -672,8 +705,6 @@ void setup() {
     } else {
         Serial.printf("\r\nCamera unavailable due to initialisation errors.\r\n\r\n");
     }
-    Serial.print("\r\nThis is the 4.0 alpha\r\n - Face detection has been removed!\r\n");
-
 
     // Used when dumping status; these are slow functions, so just do them once during startup
     sketchSize = ESP.getSketchSize();
@@ -682,6 +713,9 @@ void setup() {
 
     // As a final init step chomp out the serial buffer in case we have recieved mis-keys or garbage during startup
     while (Serial.available()) Serial.read();
+
+    // While in Beta; Warn!
+    Serial.print("\r\nThis is the 4.0 alpha\r\n - Face detection has been removed!\r\n");
 }
 
 void loop() {

myconfig.sample.h

@@ -113,6 +113,19 @@ struct station stationList[] = {{"ssid1", "pass1", true},
  */
 // #define OTA_PASSWORD "SuperVisor"
 
+/* NTP
+ *  Uncomment the following to enable the on-board clock
+ *  Pick a nearby pool server from: https://www.ntppool.org/zone/@
+ *  Set the GMT offset to match your timezone IN SECONDS;
+ *    see https://en.wikipedia.org/wiki/List_of_UTC_time_offsets
+ *    1hr = 3600 seconds; do the math ;-)
+ *    Default is CET (Central European Time), eg GMT + 1hr
+ *  The DST offset is usually 1 hour (again, in seconds) if used in your country.
+ */
+//#define NTPSERVER "<EDIT THIS>.pool.ntp.org"
+//#define NTP_GMT_OFFSET 3600
+//#define NTP_DST_OFFSET 3600
+
 /*
  * Camera Defaults
  *