PTS and digital watchface code cleanups

4 files changed, 79 insertions, 118 deletions

diff --git a/src/displayapp/screens/PineTimeStyle.cpp b/src/displayapp/screens/PineTimeStyle.cpp
index b2b972dc..7ce0bc0d 100644
--- a/src/displayapp/screens/PineTimeStyle.cpp
+++ b/src/displayapp/screens/PineTimeStyle.cpp
@@ -60,12 +60,6 @@ PineTimeStyle::PineTimeStyle(DisplayApp* app,
     settingsController {settingsController},
     motionController {motionController} {
 
-  displayedChar[0] = 0;
-  displayedChar[1] = 0;
-  displayedChar[2] = 0;
-  displayedChar[3] = 0;
-  displayedChar[4] = 0;
-
   // Create a 200px wide background rectangle
   timebar = lv_obj_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_bg_color(timebar, LV_BTN_PART_MAIN, LV_STATE_DEFAULT, Convert(settingsController.GetPTSColorBG()));
@@ -77,19 +71,19 @@ PineTimeStyle::PineTimeStyle(DisplayApp* app,
   timeDD1 = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_font(timeDD1, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &open_sans_light);
   lv_obj_set_style_local_text_color(timeDD1, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, Convert(settingsController.GetPTSColorTime()));
-  lv_label_set_text(timeDD1, "00");
+  lv_label_set_text_static(timeDD1, "00");
   lv_obj_align(timeDD1, timebar, LV_ALIGN_IN_TOP_MID, 5, 5);
 
   timeDD2 = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_font(timeDD2, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &open_sans_light);
   lv_obj_set_style_local_text_color(timeDD2, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, Convert(settingsController.GetPTSColorTime()));
-  lv_label_set_text(timeDD2, "00");
+  lv_label_set_text_static(timeDD2, "00");
   lv_obj_align(timeDD2, timebar, LV_ALIGN_IN_BOTTOM_MID, 5, -5);
 
   timeAMPM = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(timeAMPM, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, Convert(settingsController.GetPTSColorTime()));
   lv_obj_set_style_local_text_line_space(timeAMPM, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, -3);
-  lv_label_set_text(timeAMPM, "");
+  lv_label_set_text_static(timeAMPM, "");
   lv_obj_align(timeAMPM, timebar, LV_ALIGN_IN_BOTTOM_LEFT, 2, -20);
 
   // Create a 40px wide bar down the right side of the screen
@@ -102,17 +96,17 @@ PineTimeStyle::PineTimeStyle(DisplayApp* app,
   // Display icons
   batteryIcon = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(batteryIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_BLACK);
-  lv_label_set_text(batteryIcon, Symbols::batteryFull);
+  lv_label_set_text_static(batteryIcon, Symbols::batteryFull);
   lv_obj_align(batteryIcon, sidebar, LV_ALIGN_IN_TOP_MID, 0, 2);
   lv_obj_set_auto_realign(batteryIcon, true);
 
   bleIcon = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(bleIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0x000000));
-  lv_label_set_text(bleIcon, "");
+  lv_label_set_text_static(bleIcon, "");
 
   notificationIcon = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(notificationIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0x000000));
-  lv_label_set_text(notificationIcon, "");
+  lv_label_set_text_static(notificationIcon, "");
 
   // Calendar icon
   calendarOuter = lv_obj_create(lv_scr_act(), nullptr);
@@ -154,17 +148,17 @@ PineTimeStyle::PineTimeStyle(DisplayApp* app,
   // Display date
   dateDayOfWeek = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(dateDayOfWeek, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_BLACK);
-  lv_label_set_text(dateDayOfWeek, "THU");
+  lv_label_set_text_static(dateDayOfWeek, "THU");
   lv_obj_align(dateDayOfWeek, sidebar, LV_ALIGN_CENTER, 0, -34);
 
   dateDay = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(dateDay, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_BLACK);
-  lv_label_set_text(dateDay, "25");
+  lv_label_set_text_static(dateDay, "25");
   lv_obj_align(dateDay, sidebar, LV_ALIGN_CENTER, 0, 3);
 
   dateMonth = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(dateMonth, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_BLACK);
-  lv_label_set_text(dateMonth, "MAR");
+  lv_label_set_text_static(dateMonth, "MAR");
   lv_obj_align(dateMonth, sidebar, LV_ALIGN_CENTER, 0, 32);
 
   // Step count gauge
@@ -199,7 +193,7 @@ PineTimeStyle::PineTimeStyle(DisplayApp* app,
   lv_label_set_long_mode(backgroundLabel, LV_LABEL_LONG_CROP);
   lv_obj_set_size(backgroundLabel, 240, 240);
   lv_obj_set_pos(backgroundLabel, 0, 0);
-  lv_label_set_text(backgroundLabel, "");
+  lv_label_set_text_static(backgroundLabel, "");
 
   btnNextTime = lv_btn_create(lv_scr_act(), nullptr);
   btnNextTime->user_data = this;
@@ -339,7 +333,7 @@ bool PineTimeStyle::OnButtonPushed() {
 
 void PineTimeStyle::SetBatteryIcon() {
   auto batteryPercent = batteryPercentRemaining.Get();
-  lv_label_set_text(batteryIcon, BatteryIcon::GetBatteryIcon(batteryPercent));
+  lv_label_set_text_static(batteryIcon, BatteryIcon::GetBatteryIcon(batteryPercent));
 }
 
 void PineTimeStyle::AlignIcons() {
@@ -357,7 +351,7 @@ void PineTimeStyle::Refresh() {
   isCharging = batteryController.IsCharging();
   if (isCharging.IsUpdated()) {
     if (isCharging.Get()) {
-      lv_label_set_text(batteryIcon, Symbols::plug);
+      lv_label_set_text_static(batteryIcon, Symbols::plug);
     } else {
       SetBatteryIcon();
     }
@@ -371,13 +365,13 @@ void PineTimeStyle::Refresh() {
 
   bleState = bleController.IsConnected();
   if (bleState.IsUpdated()) {
-    lv_label_set_text(bleIcon, BleIcon::GetIcon(bleState.Get()));
+    lv_label_set_text_static(bleIcon, BleIcon::GetIcon(bleState.Get()));
     AlignIcons();
   }
 
   notificationState = notificatioManager.AreNewNotificationsAvailable();
   if (notificationState.IsUpdated()) {
-    lv_label_set_text(notificationIcon, NotificationIcon::GetIcon(notificationState.Get()));
+    lv_label_set_text_static(notificationIcon, NotificationIcon::GetIcon(notificationState.Get()));
     AlignIcons();
   }
 
@@ -394,45 +388,31 @@ void PineTimeStyle::Refresh() {
     auto day = static_cast<unsigned>(yearMonthDay.day());
     auto dayOfWeek = static_cast<Pinetime::Controllers::DateTime::Days>(date::weekday(yearMonthDay).iso_encoding());
 
-    int hour = time.hours().count();
-    auto minute = time.minutes().count();
-
-    char minutesChar[3];
-    sprintf(minutesChar, "%02d", static_cast<int>(minute));
-
-    char hoursChar[3];
-    char ampmChar[5];
-    if (settingsController.GetClockType() == Controllers::Settings::ClockType::H24) {
-      sprintf(hoursChar, "%02d", hour);
-    } else {
-      if (hour == 0 && hour != 12) {
-        hour = 12;
-        sprintf(ampmChar, "A\nM");
-      } else if (hour == 12 && hour != 0) {
-        hour = 12;
-        sprintf(ampmChar, "P\nM");
-      } else if (hour < 12 && hour != 0) {
-        sprintf(ampmChar, "A\nM");
-      } else if (hour > 12 && hour != 0) {
-        hour = hour - 12;
-        sprintf(ampmChar, "P\nM");
-      }
-      sprintf(hoursChar, "%02d", hour);
-    }
+    uint8_t hour = time.hours().count();
+    uint8_t minute = time.minutes().count();
 
-    if (hoursChar[0] != displayedChar[0] or hoursChar[1] != displayedChar[1] or minutesChar[0] != displayedChar[2] or
-        minutesChar[1] != displayedChar[3]) {
-      displayedChar[0] = hoursChar[0];
-      displayedChar[1] = hoursChar[1];
-      displayedChar[2] = minutesChar[0];
-      displayedChar[3] = minutesChar[1];
+    if (displayedHour != hour || displayedMinute != minute) {
+      displayedHour = hour;
+      displayedMinute = minute;
 
       if (settingsController.GetClockType() == Controllers::Settings::ClockType::H12) {
+        char ampmChar[4] = "A\nM";
+        if (hour == 0) {
+          hour = 12;
+        } else if (hour == 12) {
+          ampmChar[0] = 'P';
+        } else if (hour > 12) {
+          hour = hour - 12;
+          ampmChar[0] = 'P';
+        }
         lv_label_set_text(timeAMPM, ampmChar);
+        // Should be padded with blank spaces, but the space character doesn't exist in the font
+        lv_label_set_text_fmt(timeDD1, "%02d", hour);
+        lv_label_set_text_fmt(timeDD2, "%02d", minute);
+      } else {
+        lv_label_set_text_fmt(timeDD1, "%02d", hour);
+        lv_label_set_text_fmt(timeDD2, "%02d", minute);
       }
-
-      lv_label_set_text_fmt(timeDD1, "%s", hoursChar);
-      lv_label_set_text_fmt(timeDD2, "%s", minutesChar);
     }
 
     if ((year != currentYear) || (month != currentMonth) || (dayOfWeek != currentDayOfWeek) || (day != currentDay)) {
diff --git a/src/displayapp/screens/PineTimeStyle.h b/src/displayapp/screens/PineTimeStyle.h
index df8b7d5a..1b972ce1 100644
--- a/src/displayapp/screens/PineTimeStyle.h
+++ b/src/displayapp/screens/PineTimeStyle.h
@@ -39,7 +39,8 @@ namespace Pinetime {
         void UpdateSelected(lv_obj_t *object, lv_event_t event);
 
       private:
-        char displayedChar[5];
+        uint8_t displayedHour = -1;
+        uint8_t displayedMinute = -1;
 
         uint16_t currentYear = 1970;
         Pinetime::Controllers::DateTime::Months currentMonth = Pinetime::Controllers::DateTime::Months::Unknown;
diff --git a/src/displayapp/screens/WatchFaceDigital.cpp b/src/displayapp/screens/WatchFaceDigital.cpp
index 4d9eaf37..b3cb0f91 100644
--- a/src/displayapp/screens/WatchFaceDigital.cpp
+++ b/src/displayapp/screens/WatchFaceDigital.cpp
@@ -35,22 +35,22 @@ WatchFaceDigital::WatchFaceDigital(DisplayApp* app,
   settingsController.SetClockFace(0);
 
   batteryIcon = lv_label_create(lv_scr_act(), nullptr);
-  lv_label_set_text(batteryIcon, Symbols::batteryFull);
+  lv_label_set_text_static(batteryIcon, Symbols::batteryFull);
   lv_obj_align(batteryIcon, lv_scr_act(), LV_ALIGN_IN_TOP_RIGHT, 0, 0);
 
   batteryPlug = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(batteryPlug, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0xFF0000));
-  lv_label_set_text(batteryPlug, Symbols::plug);
+  lv_label_set_text_static(batteryPlug, Symbols::plug);
   lv_obj_align(batteryPlug, batteryIcon, LV_ALIGN_OUT_LEFT_MID, -5, 0);
 
   bleIcon = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(bleIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0x0082FC));
-  lv_label_set_text(bleIcon, Symbols::bluetooth);
+  lv_label_set_text_static(bleIcon, Symbols::bluetooth);
   lv_obj_align(bleIcon, batteryPlug, LV_ALIGN_OUT_LEFT_MID, -5, 0);
 
   notificationIcon = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(notificationIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0x00FF00));
-  lv_label_set_text(notificationIcon, NotificationIcon::GetIcon(false));
+  lv_label_set_text_static(notificationIcon, NotificationIcon::GetIcon(false));
   lv_obj_align(notificationIcon, nullptr, LV_ALIGN_IN_TOP_LEFT, 0, 0);
 
   label_date = lv_label_create(lv_scr_act(), nullptr);
@@ -71,26 +71,26 @@ WatchFaceDigital::WatchFaceDigital(DisplayApp* app,
   lv_label_set_long_mode(backgroundLabel, LV_LABEL_LONG_CROP);
   lv_obj_set_size(backgroundLabel, 240, 240);
   lv_obj_set_pos(backgroundLabel, 0, 0);
-  lv_label_set_text(backgroundLabel, "");
+  lv_label_set_text_static(backgroundLabel, "");
 
   heartbeatIcon = lv_label_create(lv_scr_act(), nullptr);
-  lv_label_set_text(heartbeatIcon, Symbols::heartBeat);
+  lv_label_set_text_static(heartbeatIcon, Symbols::heartBeat);
   lv_obj_set_style_local_text_color(heartbeatIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0xCE1B1B));
   lv_obj_align(heartbeatIcon, lv_scr_act(), LV_ALIGN_IN_BOTTOM_LEFT, 0, 0);
 
   heartbeatValue = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(heartbeatValue, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0xCE1B1B));
-  lv_label_set_text(heartbeatValue, "");
+  lv_label_set_text_static(heartbeatValue, "");
   lv_obj_align(heartbeatValue, heartbeatIcon, LV_ALIGN_OUT_RIGHT_MID, 5, 0);
 
   stepValue = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(stepValue, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0x00FFE7));
-  lv_label_set_text(stepValue, "0");
+  lv_label_set_text_static(stepValue, "0");
   lv_obj_align(stepValue, lv_scr_act(), LV_ALIGN_IN_BOTTOM_RIGHT, 0, 0);
 
   stepIcon = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(stepIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0x00FFE7));
-  lv_label_set_text(stepIcon, Symbols::shoe);
+  lv_label_set_text_static(stepIcon, Symbols::shoe);
   lv_obj_align(stepIcon, stepValue, LV_ALIGN_OUT_LEFT_MID, -5, 0);
 
   taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
@@ -105,7 +105,7 @@ WatchFaceDigital::~WatchFaceDigital() {
 void WatchFaceDigital::Refresh() {
   powerPresent = batteryController.IsPowerPresent();
   if (powerPresent.IsUpdated()) {
-    lv_label_set_text(batteryPlug, BatteryIcon::GetPlugIcon(powerPresent.Get()));
+    lv_label_set_text_static(batteryPlug, BatteryIcon::GetPlugIcon(powerPresent.Get()));
   }
 
   batteryPercentRemaining = batteryController.PercentRemaining();
@@ -116,20 +116,20 @@ void WatchFaceDigital::Refresh() {
     } else {
       lv_obj_set_style_local_text_color(batteryIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_WHITE);
     }
-    lv_label_set_text(batteryIcon, BatteryIcon::GetBatteryIcon(batteryPercent));
+    lv_label_set_text_static(batteryIcon, BatteryIcon::GetBatteryIcon(batteryPercent));
   }
 
   bleState = bleController.IsConnected();
   if (bleState.IsUpdated()) {
-    lv_label_set_text(bleIcon, BleIcon::GetIcon(bleState.Get()));
+    lv_label_set_text_static(bleIcon, BleIcon::GetIcon(bleState.Get()));
   }
-  lv_obj_align(batteryIcon, lv_scr_act(), LV_ALIGN_IN_TOP_RIGHT, 0, 0);
-  lv_obj_align(batteryPlug, batteryIcon, LV_ALIGN_OUT_LEFT_MID, -5, 0);
-  lv_obj_align(bleIcon, batteryPlug, LV_ALIGN_OUT_LEFT_MID, -5, 0);
+  lv_obj_realign(batteryIcon);
+  lv_obj_realign(batteryPlug);
+  lv_obj_realign(bleIcon);
 
   notificationState = notificatioManager.AreNewNotificationsAvailable();
   if (notificationState.IsUpdated()) {
-    lv_label_set_text(notificationIcon, NotificationIcon::GetIcon(notificationState.Get()));
+    lv_label_set_text_static(notificationIcon, NotificationIcon::GetIcon(notificationState.Get()));
   }
 
   currentDateTime = dateTimeController.CurrentDateTime();
@@ -146,62 +146,41 @@ void WatchFaceDigital::Refresh() {
     auto day = static_cast<unsigned>(yearMonthDay.day());
     auto dayOfWeek = static_cast<Pinetime::Controllers::DateTime::Days>(date::weekday(yearMonthDay).iso_encoding());
 
-    int hour = time.hours().count();
-    auto minute = time.minutes().count();
-
-    char minutesChar[3];
-    sprintf(minutesChar, "%02d", static_cast<int>(minute));
-
-    char hoursChar[3];
-    char ampmChar[3];
-    if (settingsController.GetClockType() == Controllers::Settings::ClockType::H24) {
-      sprintf(hoursChar, "%02d", hour);
-    } else {
-      if (hour == 0 && hour != 12) {
-        hour = 12;
-        sprintf(ampmChar, "AM");
-      } else if (hour == 12 && hour != 0) {
-        hour = 12;
-        sprintf(ampmChar, "PM");
-      } else if (hour < 12 && hour != 0) {
-        sprintf(ampmChar, "AM");
-      } else if (hour > 12 && hour != 0) {
-        hour = hour - 12;
-        sprintf(ampmChar, "PM");
-      }
-      sprintf(hoursChar, "%02d", hour);
-    }
+    uint8_t hour = time.hours().count();
+    uint8_t minute = time.minutes().count();
 
-    if ((hoursChar[0] != displayedChar[0]) or (hoursChar[1] != displayedChar[1]) or (minutesChar[0] != displayedChar[2]) or
-        (minutesChar[1] != displayedChar[3])) {
-      displayedChar[0] = hoursChar[0];
-      displayedChar[1] = hoursChar[1];
-      displayedChar[2] = minutesChar[0];
-      displayedChar[3] = minutesChar[1];
+    if (displayedHour != hour || displayedMinute != minute) {
+      displayedHour = hour;
+      displayedMinute = minute;
 
       if (settingsController.GetClockType() == Controllers::Settings::ClockType::H12) {
-        lv_label_set_text(label_time_ampm, ampmChar);
-        if (hoursChar[0] == '0') {
-          hoursChar[0] = ' ';
+        char ampmChar[3] = "AM";
+        if (hour == 0) {
+          hour = 12;
+        } else if (hour == 12) {
+          ampmChar[0] = 'P';
+        } else if (hour > 12) {
+          hour = hour - 12;
+          ampmChar[0] = 'P';
         }
-      }
-
-      lv_label_set_text_fmt(label_time, "%s:%s", hoursChar, minutesChar);
-
-      if (settingsController.GetClockType() == Controllers::Settings::ClockType::H12) {
+        lv_label_set_text(label_time_ampm, ampmChar);
+        lv_label_set_text_fmt(label_time, "%2d:%02d", hour, minute);
         lv_obj_align(label_time, lv_scr_act(), LV_ALIGN_IN_RIGHT_MID, 0, 0);
       } else {
+        lv_label_set_text_fmt(label_time, "%02d:%02d", hour, minute);
         lv_obj_align(label_time, lv_scr_act(), LV_ALIGN_CENTER, 0, 0);
       }
     }
 
     if ((year != currentYear) || (month != currentMonth) || (dayOfWeek != currentDayOfWeek) || (day != currentDay)) {
       if (settingsController.GetClockType() == Controllers::Settings::ClockType::H24) {
-        lv_label_set_text_fmt(label_date, "%s %d %s %d", dateTimeController.DayOfWeekShortToString(), day, dateTimeController.MonthShortToString(), year);
+        lv_label_set_text_fmt(
+          label_date, "%s %d %s %d", dateTimeController.DayOfWeekShortToString(), day, dateTimeController.MonthShortToString(), year);
       } else {
-        lv_label_set_text_fmt(label_date, "%s %s %d %d", dateTimeController.DayOfWeekShortToString(), dateTimeController.MonthShortToString(), day, year);
+        lv_label_set_text_fmt(
+          label_date, "%s %s %d %d", dateTimeController.DayOfWeekShortToString(), dateTimeController.MonthShortToString(), day, year);
       }
-      lv_obj_align(label_date, lv_scr_act(), LV_ALIGN_CENTER, 0, 60);
+      lv_obj_realign(label_date);
 
       currentYear = year;
       currentMonth = month;
@@ -221,15 +200,15 @@ void WatchFaceDigital::Refresh() {
       lv_label_set_text_static(heartbeatValue, "");
     }
 
-    lv_obj_align(heartbeatIcon, lv_scr_act(), LV_ALIGN_IN_BOTTOM_LEFT, 0, 0);
-    lv_obj_align(heartbeatValue, heartbeatIcon, LV_ALIGN_OUT_RIGHT_MID, 5, 0);
+    lv_obj_realign(heartbeatIcon);
+    lv_obj_realign(heartbeatValue);
   }
 
   stepCount = motionController.NbSteps();
   motionSensorOk = motionController.IsSensorOk();
   if (stepCount.IsUpdated() || motionSensorOk.IsUpdated()) {
     lv_label_set_text_fmt(stepValue, "%lu", stepCount.Get());
-    lv_obj_align(stepValue, lv_scr_act(), LV_ALIGN_IN_BOTTOM_RIGHT, 0, 0);
-    lv_obj_align(stepIcon, stepValue, LV_ALIGN_OUT_LEFT_MID, -5, 0);
+    lv_obj_realign(stepValue);
+    lv_obj_realign(stepIcon);
   }
 }
diff --git a/src/displayapp/screens/WatchFaceDigital.h b/src/displayapp/screens/WatchFaceDigital.h
index 627154c8..ab3a0285 100644
--- a/src/displayapp/screens/WatchFaceDigital.h
+++ b/src/displayapp/screens/WatchFaceDigital.h
@@ -35,7 +35,8 @@ namespace Pinetime {
         void Refresh() override;
 
       private:
-        char displayedChar[5] {};
+        uint8_t displayedHour = -1;
+        uint8_t displayedMinute = -1;
 
         uint16_t currentYear = 1970;
         Pinetime::Controllers::DateTime::Months currentMonth = Pinetime::Controllers::DateTime::Months::Unknown;