added support for ota and ntp

ChronoDisplay.ino

@@ -6,6 +6,9 @@
 #include "ChronoReadingManager.h"
 #include "ChronoWebServer.h"
 #include "FileManager.h"
+#include <WiFi.h>
+#include <time.h>
+#include <sys/time.h>
 
 //testing mode variables
 static bool testMode=false;
@@ -64,10 +67,13 @@ void setup()
     FileManager& files = FileManager::getInstance();
     files.init();
 
-    //initialize web portal
+    //initialize web portal (also connects to WiFi)
     webServer.init();
     webServer.setTestModeCallback(toggleTestMode);
 
+    //sync time via NTP after WiFi is connected
+    setDateTime();
+
     //initialize display
     Display::init();
 
@@ -83,32 +89,45 @@ void setup()
     chronoBLE.setSpeedCallback(speedCallback);
 }
 void setDateTime(){
-    // Example: Set time to January 1, 2025, 12:00:00
+  // NTP server configuration
-  struct tm t;
+  configTime("EST5EDT,M3.2.0/2,M11.1.0/2", "pool.ntp.org", "time.nist.gov");
-  t.tm_year = 2025 - 1900; // Year - 1900
-  t.tm_mon = 7;            // Month (0-11, where 0 = Jan)
-  t.tm_mday = 4;           // Day of the month (1-31)
-  t.tm_hour = 14;          // Hour (0-23)
-  t.tm_min = 56;            // Minute (0-59)
-  t.tm_sec = 0;            // Second (0-59)
-  t.tm_isdst = -1;         // Is DST on? 1 = yes, 0 = no, -1 = unknown
 
-  time_t epoch_time = mktime(&t);
+  // Wait for time to be set
-
-  struct timeval tv;
-  tv.tv_sec = epoch_time;
-  tv.tv_usec = 0;
-
-  settimeofday(&tv, NULL);
-
-  // Verify the set time
   time_t now;
-  char strftime_buf[64];
   struct tm timeinfo;
+  int retry = 0;
+  const int maxRetry = 20; // 10 seconds max
 
+  while (retry < maxRetry) {
     time(&now);
     localtime_r(&now, &timeinfo);
-  strftime(strftime_buf, sizeof(strftime_buf), "%c", &timeinfo);
+
+    // Check if we have a valid time (year > 2020)
+    if (timeinfo.tm_year > 120) {  // 120 = year 2020
+      Serial.println("Time synced via NTP");
+      break;
+    }
+    Serial.print("Waiting for NTP sync... ");
+    Serial.println(retry);
+    delay(500);
+    retry++;
+  }
+
+  // If still not synced, fall back to a default date
+  if (timeinfo.tm_year <= 120) {
+    Serial.println("NTP sync failed, using fallback date");
+    timeinfo.tm_year = 2024 - 1900;
+    timeinfo.tm_mon = 0;  // January
+    timeinfo.tm_mday = 1;
+    timeinfo.tm_hour = 0;
+    timeinfo.tm_min = 0;
+    timeinfo.tm_sec = 0;
+    timeinfo.tm_isdst = -1;
+
+    now = mktime(&timeinfo);
+    struct timeval tv = {.tv_sec = now};
+    settimeofday(&tv, NULL);
+  }
 }
 void updateTime(){
     time_t now;

ChronoWebServer.cpp

@@ -73,6 +73,26 @@ void ChronoWebServer::_handleRoot() {
         .then(data => console.log(data))\
         .catch(error => console.error('Error:', error));\
       }\
+      function doOta(){\
+        const fileInput = document.getElementById('otaFile');\
+        if (!fileInput.files.length) {\
+          alert('Please select a firmware file');\
+          return;\
+        }\
+        const formData = new FormData();\
+        formData.append('otaFile', fileInput.files[0]);\
+        fetch('/ota', {\
+          method: 'POST',\
+          body: formData\
+        })\
+        .then(response => response.text())\
+        .then(data => {\
+          console.log(data);\
+          alert('OTA update in progress... Device will restart.');\
+          window.location.href = '/';\
+        })\
+        .catch(error => console.error('Error:', error));\
+      }\
       document.addEventListener('DOMContentLoaded', function() {\
             const rows = document.querySelectorAll('.clickable-row');\
             rows.forEach(row => {\
@@ -114,6 +134,12 @@ void ChronoWebServer::_handleRoot() {
       <button onclick='reset()'>Reset</button>\
       <button onclick='format()'>Format</button>\
       <button onclick='toggleTestMode()'>Toggle Test Mode</button>\
+      <button onclick='doOta()'>OTA Update</button>\
+    </div>\
+    <div style='margin-top:20px; padding: 10px; border: 1px solid #999;'>\
+      <h3>OTA Firmware Update</h3>\
+      <input type='file' id='otaFile' accept='.bin,.bin'></input>\
+      <p style='font-size: 12px; color: #666;'>Select a .bin firmware file to update over-the-air</p>\
     </div>\
     <div style='margin-top:100px; position:relative;'>\
         <h3>Gun Profiles</h3>\
@@ -434,6 +460,69 @@ void ChronoWebServer::_handleTestMode(){
   testModeCallback();
   _server.send(200, "text/html", "ok");
 }
+void ChronoWebServer::_handleOta(){
+  HTTPMethod method = _server.method();
+
+  if (method == HTTP_GET) {
+    // Serve OTA update page
+    String temp = "<html>\
+  <head>\
+    <title>OTA Firmware Update</title>\
+    <style>\
+      body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
+    </style>\
+  </head>\
+  <body>\
+  <h1>OTA Firmware Update</h1>\
+  <p>Select a .bin firmware file to update over-the-air.</p>\
+  <form method='POST' action='/ota' enctype='multipart/form-data'>\
+    <div>\
+      <h3>Firmware File</h3>\
+      <input type='file' name='otaFile' accept='.bin'></input>\
+    </div>\
+    <div style='margin-top: 20px;'>\
+      <button type='submit'>Upload</button>\
+    </div>\
+  </form>\
+  </body>\
+  </html>";
+    _server.send(200, "text/html", temp);
+  }
+  else if (method == HTTP_POST) {
+    // Handle firmware upload
+    HTTPUpload& upload = _server.upload();
+
+    if (upload.status == UPLOAD_FILE_START) {
+      Serial.println("OTA: Starting update...");
+      // Initialize update with the size of the uploaded file
+      if (!Update.begin(upload.totalSize)) {
+        Serial.println("OTA: Error: Not enough space");
+        _server.send(500, "text/plain", "Not enough space");
+        return;
+      }
+    }
+    else if (upload.status == UPLOAD_FILE_WRITE) {
+      // Write received firmware to flash
+      if (Update.write(upload.buf, upload.currentSize) != upload.currentSize) {
+        Serial.println("OTA: Error: Write failed");
+        _server.send(500, "text/plain", "Write failed");
+        return;
+      }
+    }
+    else if (upload.status == UPLOAD_FILE_END) {
+      // End of upload
+      if (Update.end(true)) {
+        Serial.printf("OTA: Update complete: %u bytes\n", upload.totalSize);
+        _server.send(200, "text/html", "<h1>OTA Update Successful!<br>Restarting...</h1>");
+        delay(1000);
+        ESP.restart();
+      } else {
+        Serial.println("OTA: Error: Update end failed");
+        _server.send(500, "text/plain", "Update failed");
+      }
+    }
+  }
+}
 void ChronoWebServer::init(){
   WiFi.mode(WIFI_STA);
   WiFi.begin(ssid, password);
@@ -463,6 +552,7 @@ void ChronoWebServer::init(){
   _server.on("/reset", _handleReset);
   _server.on("/format", _handleFormat);
   _server.on("/testmode", _handleTestMode);
+  _server.on("/ota", _handleOta);
   _server.on("/", _handleRoot);
   _server.begin();
 }

ChronoWebServer.h

@@ -33,6 +33,7 @@ class ChronoWebServer {
     static void _handleReset();
     static void _handleFormat();
     static void _handleTestMode();
+    static void _handleOta();
 
 };
 

README.md

@@ -127,6 +127,8 @@ Connect to the device's WiFi network (or existing network — SSID and password
 | `/reset` | GET | Clear all readings (shot count, stats) |
 | `/format` | GET | Format LittleFS — erase all stored profiles |
 | `/testmode` | GET | Toggle test mode (simulated readings every 5s) |
+| `/ota` | GET | OTA firmware update page |
+| `/ota` | POST | Upload and apply firmware update (.bin file) |
 
 ### Gun Profile Types
 
@@ -200,8 +202,8 @@ Initial development. The project compiles and runs with the following functional
 - ✅ CSV export of readings
 - ✅ Persistent profile storage
 - ✅ Test mode for display debugging
-- ⏳ OTA firmware updates (Update.h included but not implemented)
+- ✅ OTA firmware updates (via web UI at /ota)
-- ⏳ Time synchronization via NTP (currently hardcoded)
+- ✅ Time synchronization via NTP
 
 ## License