added timezone support

include/rtctime.h

@@ -3,6 +3,7 @@
 
 #include "globals.h"
 #include <Time.h>
+#include <Timezone.h>
 #include <Wire.h> // must be included here so that Arduino library object file references work
 #include <RtcDS3231.h>
 
@@ -19,9 +20,9 @@ typedef enum {
 } clock_state_t;
 
 extern RtcDS3231<TwoWire> Rtc; // make RTC instance globally available
+extern Timezone myTZ; // make Timezone myTZ globally available
 
 int rtc_init(void);
-void sync_rtctime(void);
 int set_rtctime(uint32_t UTCTime);
 int set_rtctime(RtcDateTime now);
 void sync_rtctime(void);

src/cyclic.cpp

@@ -130,26 +130,23 @@ void do_timesync() {
             gps.date.day(), gps.date.month(), gps.date.year());
 // set RTC time to time source GPS, if RTC is present
 #ifdef HAS_RTC
-    RtcDateTime t =
+    if (!set_rtctime(RtcDateTime(now())))
-        RtcDateTime(gps.date.year(), gps.date.month(), gps.date.day(),
+      ESP_LOGE(TAG, "RTC set time failure");
-                    gps.time.hour(), gps.time.minute(), gps.time.second());
-    set_rtctime(t);
 #endif
-    time_t tt = now();
+    time_t tt = myTZ.toLocal(now());
     ESP_LOGI(TAG, "GPS has set system time to %02d/%02d/%d %02d:%02d:%02d",
              month(tt), day(tt), year(tt), hour(tt), minute(tt), second(tt));
     return;
   } else {
     ESP_LOGI(TAG, "No valid GPS time");
   }
-#endif // HAS_GPS
 
-// set system time to time source LoRa Network, if network supports DevTimeReq
+  // set system time to time source LoRa Network, if network supports DevTimeReq
-#ifdef LMIC_ENABLE_DeviceTimeReq
+#elif defined LMIC_ENABLE_DeviceTimeReq
   // Schedule a network time sync request at the next possible time
   LMIC_requestNetworkTime(user_request_network_time_callback, &userUTCTime);
   ESP_LOGI(TAG, "Network time request scheduled");
-#endif
+#endif // HAS_GPS
 
 #endif // TIME_SYNC_INTERVAL
 } // do_timesync()

src/display.cpp

@@ -209,7 +209,7 @@ void refreshtheDisplay() {
     u8x8.printf("%-16s", display_line6);
 #else
     // update time/date display (line 6)
-    time_t t = now();
+    time_t t = myTZ.toLocal(now());
     u8x8.printf("%02d:%02d:%02d%c %2d.%3s", hour(t), minute(t), second(t),
                 timeStatus() == timeSet ? '*' : '?', day(t),
                 printmonth[month(t)]);

src/if482.cpp

@@ -140,7 +140,7 @@ void if482_loop(void *pvParameters) {
         &wakeTime,      // receives moment of call from isr
         portMAX_DELAY); // wait forever (missing error handling here...)
 
-    t = now();
+    t = myTZ.toLocal(now());
     wakeTime -= startOffset;
 
     // now we're synced to start of second t and wait

src/lorawan.cpp

@@ -456,9 +456,10 @@ void user_request_network_time_callback(void *pVoidUserUTCTime,
   // Update system time with  time read from the network
   setTime(*pUserUTCTime);
 #ifdef HAS_RTC
-  set_rtctime(*pUserUTCTime);
+  if (!set_rtctime(*pUserUTCTime))
+    ESP_LOGE(TAG, "RTC set time failure");
 #endif
-  time_t t = now();
+  time_t t = myTZ.toLocal(now());
   ESP_LOGI(TAG,
            "LORA Network has set system time to %02d/%02d/%d %02d:%02d:%02d",
            month(t), day(t), year(t), hour(t), minute(t), second(t));

src/main.cpp

@@ -173,7 +173,7 @@ void setup() {
 
 #if (HAS_LED != NOT_A_PIN) || defined(HAS_RGB_LED)
   // start led loop
-  ESP_LOGI(TAG, "Starting LEDloop...");
+  ESP_LOGI(TAG, "Starting LED Controller...");
   xTaskCreatePinnedToCore(ledLoop,      // task function
                           "ledloop",    // name of task
                           1024,         // stack size of task
@@ -190,8 +190,8 @@ void setup() {
   sync_rtctime();
 #ifdef HAS_IF482
   strcat_P(features, " IF482");
-  if (if482_init()) {
+  assert(if482_init());
-    ESP_LOGI(TAG, "Starting IF482loop...");
+  ESP_LOGI(TAG, "Starting IF482 Generator...");
   xTaskCreatePinnedToCore(if482_loop,  // task function
                           "if482loop", // name of task
                           2048,        // stack size of task
@@ -199,7 +199,6 @@ void setup() {
                           3,           // priority of the task
                           &IF482Task,  // task handle
                           0);          // CPU core
-  }
 #endif                                 // HAS_IF482
 #endif                                 // HAS_RTC
 
@@ -265,7 +264,7 @@ void setup() {
 #ifdef HAS_GPS
   strcat_P(features, " GPS");
   if (gps_init()) {
-    ESP_LOGI(TAG, "Starting GPSloop...");
+    ESP_LOGI(TAG, "Starting GPS Feed...");
     xTaskCreatePinnedToCore(gps_loop,  // task function
                             "gpsloop", // name of task
                             2048,      // stack size of task
@@ -359,7 +358,7 @@ void setup() {
   get_salt(); // get new 16bit for salting hashes
 
   // start state machine
-  ESP_LOGI(TAG, "Starting IRQ Handler...");
+  ESP_LOGI(TAG, "Starting Interrupt Handler...");
   xTaskCreatePinnedToCore(irqHandler,      // task function
                           "irqhandler",    // name of task
                           4096,            // stack size of task
@@ -382,7 +381,7 @@ void setup() {
 #ifdef HAS_BME
   strcat_P(features, " BME");
   if (bme_init()) {
-    ESP_LOGI(TAG, "Starting BMEloop...");
+    ESP_LOGI(TAG, "Starting Bluetooth sniffer...");
     xTaskCreatePinnedToCore(bme_loop,  // task function
                             "bmeloop", // name of task
                             2048,      // stack size of task
@@ -393,6 +392,7 @@ void setup() {
   }
 #endif
 
+  assert(irqHandlerTask != NULL); // has interrupt handler task started?
                                   // start timer triggered interrupts
   ESP_LOGI(TAG, "Starting Interrupts...");
 #ifdef HAS_DISPLAY
@@ -414,7 +414,8 @@ void setup() {
 // start RTC interrupt
 #if defined HAS_IF482 && defined HAS_RTC
   // setup external interupt for active low RTC INT pin
-  if (IF482IRQ != NULL) // has if482loop task started?
+  assert(IF482Task != NULL); // has if482loop task started?
+  ESP_LOGI(TAG, "Starting IF482 output...");
   attachInterrupt(digitalPinToInterrupt(RTC_INT), IF482IRQ, FALLING);
 #endif
 

src/paxcounter.conf

@@ -82,9 +82,12 @@
 #define RESPONSE_TIMEOUT_MS             60000   // firmware binary server connection timeout [milliseconds]
 
 // settings for syncing time of node and external time sources
-//#define TIME_SYNC_INTERVAL              60      // sync time each ... minutes with external source [default = 60], comment out means off          
+#define TIME_SYNC_INTERVAL              60      // sync time each ... minutes with external source [default = 60], comment out means off          
 #define TIME_SYNC_INTERVAL_RTC          5       // sync time each ... minutes with RTC [default = 5], comment out means off          
 #define IF482_OFFSET                    984     // 1sec minus IF482 serial transmit time [ms]: e.g. 9 bits * 17 bytes * 1/9600 bps = 16ms
+// time zone, see https://github.com/JChristensen/Timezone/blob/master/examples/WorldClock/WorldClock.ino
+#define DAYLIGHT_TIME                   {"CEST", Last, Sun, Mar, 2, 120}     // Central European Summer Time
+#define STANDARD_TIME                   {"CET ", Last, Sun, Oct, 3, 60}      // Central European Standard Time
 
 // LMIC settings
 // moved to src/lmic_config.h

src/rtctime.cpp

@@ -5,7 +5,12 @@
 // Local logging tag
 static const char TAG[] = "main";
 
-RtcDS3231<TwoWire> Rtc(Wire);
+RtcDS3231<TwoWire> Rtc(Wire); // RTC hardware i2c interface
+
+// set Time Zone, fetch user setting from paxcounter.conf
+TimeChangeRule myDST = DAYLIGHT_TIME;
+TimeChangeRule mySTD = STANDARD_TIME;
+Timezone myTZ(myDST, mySTD);
 
 // initialize RTC
 int rtc_init(void) {
@@ -34,7 +39,7 @@ int rtc_init(void) {
     RtcDateTime now = Rtc.GetDateTime();
 
     if (now < compiled) {
-      ESP_LOGI(TAG, "RTC date/time is older than compilation date, updating)");
+      ESP_LOGI(TAG, "RTC date/time is older than compilation date, updating");
       Rtc.SetDateTime(compiled);
     }
 
@@ -80,12 +85,12 @@ int set_rtctime(RtcDateTime t) {
 } // set_rtctime()
 
 time_t get_rtctime(void) {
-  // never call now() in this function, would cause recursion!
+  // never call now() in this function, this would cause a recursion!
   time_t tt = 0;
   // block i2c bus access
   if (I2C_MUTEX_LOCK()) {
     if (!Rtc.IsDateTimeValid()) {
-      ESP_LOGW(TAG, "RTC lost confidence in the DateTime");
+      ESP_LOGW(TAG, "RTC has no confident time");
     } else {
       RtcDateTime t = Rtc.GetDateTime();
       tt = t.Epoch32Time();
@@ -99,16 +104,21 @@ time_t get_rtctime(void) {
 void sync_rtctime(void) {
   if (timeStatus() != timeSet) { // do we need time sync?
     time_t t = get_rtctime();
-    if (t) { // do we have valid time by RTC?
+    if (t) { // have we got a valid time from RTC?
       setTime(t);
+      time_t tt = myTZ.toLocal(t);
       ESP_LOGI(TAG, "RTC has set system time to %02d/%02d/%d %02d:%02d:%02d",
-               month(t), day(t), year(t), hour(t), minute(t), second(t));
+               month(tt), day(tt), year(tt), hour(tt), minute(tt), second(tt));
     } else
-      ESP_LOGE(TAG, "RTC has no confident time, not synced");
+      ESP_LOGW(TAG, "System time was not synced");
   }
 
 #ifdef TIME_SYNC_INTERVAL_RTC
-  setSyncProvider(&get_rtctime);
+  setSyncProvider(&get_rtctime); // does not sync if callback function returns 0
+  if (timeStatus() != timeSet)
+    ESP_LOGI("Unable to sync with the RTC");
+  else
+    ESP_LOGI("RTC has set the system time");
   setSyncInterval(TIME_SYNC_INTERVAL_RTC);
 #endif