From 248cdd9aeb964c84ad8f4e1713df599c0ffb1806 Mon Sep 17 00:00:00 2001
From: Michele Bini <michele.bini@gmail.com>
Date: Sun, 10 Apr 2022 14:32:18 +0200
Subject: Display deciseconds in digital watchface


diff --git a/src/components/datetime/DateTimeController.h b/src/components/datetime/DateTimeController.h
index cf9d52c..2126ca1 100644
--- a/src/components/datetime/DateTimeController.h
+++ b/src/components/datetime/DateTimeController.h
@@ -60,6 +60,11 @@ namespace Pinetime {
       uint8_t Seconds() const {
         return second;
       }
+      uint8_t Deciseconds() const {
+        uint16_t x = subsecondTicks;
+        x *= 10;
+        return x >> 10;
+      }
 
       const char* MonthShortToString() const;
       const char* DayOfWeekShortToString() const;
diff --git a/src/displayapp/screens/WatchFaceDigital.cpp b/src/displayapp/screens/WatchFaceDigital.cpp
index 03750be..cf8f659 100644
--- a/src/displayapp/screens/WatchFaceDigital.cpp
+++ b/src/displayapp/screens/WatchFaceDigital.cpp
@@ -79,6 +79,10 @@ WatchFaceDigital::WatchFaceDigital(DisplayApp* app,
   lv_label_set_text_static(label_time_seconds, seconds_label_text);
   lv_obj_align(label_time_seconds, label_time, LV_ALIGN_OUT_RIGHT_BOTTOM, 0, 0);
 
+  label_time_deciseconds = lv_label_create(lv_scr_act(), nullptr);
+  lv_label_set_text_static(label_time_deciseconds, seconds_label_text);
+  lv_obj_align(label_time_deciseconds, label_time_seconds, LV_ALIGN_OUT_RIGHT_BOTTOM, 0, 0);
+
   backgroundLabel = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_click(backgroundLabel, true);
   lv_label_set_long_mode(backgroundLabel, LV_LABEL_LONG_CROP);
@@ -161,6 +165,7 @@ void WatchFaceDigital::Refresh() {
 #endif
 
   uint8_t second = dateTimeController.Seconds();
+  uint8_t decisecond = dateTimeController.Deciseconds();
 
   if (second != displayedSecond) {
     displayedSecond = second;
@@ -169,6 +174,12 @@ void WatchFaceDigital::Refresh() {
     lv_label_set_text_static(label_time_seconds, seconds_label_text);    
   }
 
+  if (decisecond != displayedDecisecond) {
+    displayedDecisecond = decisecond;
+    deciseconds_label_text[0] = '0' + decisecond;
+    lv_label_set_text_static(label_time_deciseconds, deciseconds_label_text);
+  }
+
   currentDateTime = dateTimeController.CurrentDateTime();
 
   if (currentDateTime.IsUpdated()) {
diff --git a/src/displayapp/screens/WatchFaceDigital.h b/src/displayapp/screens/WatchFaceDigital.h
index c59b7b4..0bf5eec 100644
--- a/src/displayapp/screens/WatchFaceDigital.h
+++ b/src/displayapp/screens/WatchFaceDigital.h
@@ -42,6 +42,7 @@ namespace Pinetime {
         uint8_t displayedHour = -1;
         uint8_t displayedMinute = -1;
         uint8_t displayedSecond = -1;
+        uint8_t displayedDecisecond = -1;
 
         uint16_t currentYear = 1970;
         Controllers::DateTime::Months currentMonth = Pinetime::Controllers::DateTime::Months::Unknown;
@@ -49,7 +50,8 @@ namespace Pinetime {
         uint8_t currentDay = 0;
 
         char hhmm_label_text[6] = { '?', '?', ':', '?', '?', 0 };
-        char seconds_label_text[4] = { ':', '?', '?', 0 };
+        char seconds_label_text[5] = { ':', '?', '?', '.', 0 };
+        char deciseconds_label_text[2] = { '?', 0 };
 
         DirtyValue<uint8_t> batteryPercentRemaining {};
         DirtyValue<bool> powerPresent {};
@@ -66,6 +68,7 @@ namespace Pinetime {
         lv_obj_t* label_time;
         lv_obj_t* label_time_pm;
         lv_obj_t* label_time_seconds;
+        lv_obj_t* label_time_deciseconds;
         lv_obj_t* label_date;
         lv_obj_t* backgroundLabel;
         lv_obj_t* batteryIcon;
-- 
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