Removed unsigned ints

These appear to have been the cause of my issues. Not sure why, I'd have
to know the nrf52832 better to diagnose it.

src/components/stopwatch/StopWatchController.cpp

@@ -55,34 +55,38 @@ void StopWatch::pushLap(TickType_t lapEnd) {
   lapHead = lapCount % LAP_CAPACITY;
 }
 
-uint32_t StopWatch::getLapNum() {
+int StopWatch::getLapNum() {
   if (lapCount < LAP_CAPACITY)
     return lapCount;
   else
     return LAP_CAPACITY;
 }
 
-uint32_t StopWatch::getLapCount() {
+int StopWatch::getLapCount() {
   return lapCount;
 }
 
-LapInfo_t *StopWatch::lastLap(uint32_t lap) {
-  if (lap >= LAP_CAPACITY || lap >= lapCount || lapCount == 0) {
+int wrap(int index) {
+  return ((index % LAP_CAPACITY) + LAP_CAPACITY) % LAP_CAPACITY;
+}
+
+LapInfo_t *StopWatch::lastLap(int lap) {
+  if (lap >= LAP_CAPACITY || lap > lapCount || lapCount == 0) {
     // Return "empty" LapInfo_t
     return &emptyLapInfo;
   }
   // Index backwards
-  uint32_t index = ((lapHead + LAP_CAPACITY) - lap) % LAP_CAPACITY;
+  int index = wrap(lapHead - lap);
   return &laps[index];
 }
 
 // Data acess
 
-uint32_t StopWatch::getStart() {
+TickType_t StopWatch::getStart() {
   return startTime;
 }
 
-uint32_t StopWatch::getElapsedPreviously() {
+TickType_t StopWatch::getElapsedPreviously() {
   return timeElapsedPreviously;
 }
 

src/components/stopwatch/StopWatchController.h

@@ -14,7 +14,7 @@ namespace Pinetime {
     enum class StopWatchStates { Cleared, Running, Paused };
 
     struct LapInfo_t {
-      uint32_t count = 0; // Used to label the lap
+      int count = 0; // Used to label the lap
       TickType_t time = 0; // delta time from beginning of stopwatch
     };
 
@@ -36,15 +36,15 @@ namespace Pinetime {
       void pushLap(TickType_t lapEnd);
 
       /// Returns actual count of stored laps
-      uint32_t getLapNum();
+      int getLapNum();
 
       /// Returns lapCount
-      uint32_t getLapCount();
+      int getLapCount();
 
       /// Indexes into lap history, with 0 being the latest lap.
       /// If the lap is unavailable, count and time will be 0. If there is a
       /// real value, count should be above 0
-      LapInfo_t *lastLap(uint32_t lap=0);
+      LapInfo_t *lastLap(int lap=0);
 
       bool isRunning();
       bool isCleared();
@@ -60,8 +60,8 @@ namespace Pinetime {
       // Stores lap times
       LapInfo_t laps[LAP_CAPACITY];
       LapInfo_t emptyLapInfo = { .count = 0, .time = 0 };
-      uint32_t lapCount = 0;
-      uint32_t lapHead = 0;
+      int lapCount = 0;
+      int lapHead = 0;
     };
   }
 }

src/displayapp/screens/StopWatch.cpp

@@ -183,11 +183,8 @@ void StopWatch::Refresh() {
 }
 
 void StopWatch::refreshLaps() {
-  Pinetime::Controllers::LapInfo_t
-    // Latest lap
-    *lap1 = stopWatchController.lastLap(),
-    // Second latest lap
-    *lap2 = stopWatchController.lastLap(1);
+  Pinetime::Controllers::LapInfo_t *lap1 = stopWatchController.lastLap();
+  Pinetime::Controllers::LapInfo_t *lap2 = stopWatchController.lastLap(1);
 
   if (lap1->count != 0) {
     TimeSeparated_t laptime = convertTicksToTimeSegments(lap1->time);