Reset the step count every day at midnight.

src/components/datetime/DateTimeController.cpp

@@ -1,9 +1,14 @@
 #include "DateTimeController.h"
 #include <date/date.h>
 #include <libraries/log/nrf_log.h>
+#include <systemtask/SystemTask.h>
 
 using namespace Pinetime::Controllers;
 
+DateTime::DateTime(System::SystemTask& systemTask) : systemTask{systemTask} {
+
+}
+
 
 void DateTime::SetTime(uint16_t year, uint8_t month, uint8_t day, uint8_t dayOfWeek, uint8_t hour, uint8_t minute,
                        uint8_t second, uint32_t systickCounter) {
@@ -62,6 +67,14 @@ void DateTime::UpdateTime(uint32_t systickCounter) {
   hour = time.hours().count();
   minute = time.minutes().count();
   second = time.seconds().count();
+
+  // Notify new day to SystemTask
+  if(hour == 0 and not isMidnightAlreadyNotified) {
+    isMidnightAlreadyNotified = true;
+    systemTask.PushMessage(System::SystemTask::Messages::OnNewDay);
+  } else if (hour != 0) {
+    isMidnightAlreadyNotified = false;
+  }
 }
 
 const char *DateTime::MonthShortToString() {

src/components/datetime/DateTimeController.h

@@ -4,12 +4,17 @@
 #include <chrono>
 
 namespace Pinetime {
+  namespace System {
+    class SystemTask;
+  }
   namespace Controllers {
     class DateTime {
       public:
         enum class Days : uint8_t {Unknown, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday};
         enum class Months : uint8_t {Unknown, January, February, March, April, May, June, July, August, September, October, November, December};
 
+        DateTime(System::SystemTask& systemTask);
+
         void SetTime(uint16_t year, uint8_t month, uint8_t day, uint8_t dayOfWeek, uint8_t hour, uint8_t minute, uint8_t second, uint32_t systickCounter);
         void UpdateTime(uint32_t systickCounter);
         uint16_t Year() const { return year; }
@@ -31,6 +36,7 @@ namespace Pinetime {
         std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> CurrentDateTime() const { return currentDateTime; }
         std::chrono::seconds Uptime() const { return uptime; }
       private:
+        System::SystemTask& systemTask;
         uint16_t year = 0;
         Months month = Months::Unknown;
         uint8_t day = 0;
@@ -43,6 +49,8 @@ namespace Pinetime {
         std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> currentDateTime;
         std::chrono::seconds uptime {0};
 
+        bool isMidnightAlreadyNotified = false;
+
         static char const *DaysString[];
         static char const *DaysStringShort[];
         static char const *DaysStringLow[];