Initialize SystemTask, DisplayApp and HeartRateTask as global static variable instead of variables on the heap. We don't need them on the heap as we know their size at build time, it'll reduce memory fragmentation and it'll make memory analysis easier.

src/drivers/Bma421.cpp

@@ -103,8 +103,6 @@ Bma421::Values Bma421::Process() {
   uint8_t activity = 0;
   bma423_activity_output(&activity, &bma);
 
-  NRF_LOG_INFO("MOTION : %d - %d/%d/%d", steps, data.x, data.y, data.z);
-
   // X and Y axis are swapped because of the way the sensor is mounted in the PineTime
   return {steps, data.y, data.x, data.z};
 }

src/drivers/SpiMaster.h

@@ -10,7 +10,6 @@ namespace Pinetime {
   namespace Drivers {
     class SpiMaster {
     public:
-      ;
       enum class SpiModule : uint8_t { SPI0, SPI1 };
       enum class BitOrder : uint8_t { Msb_Lsb, Lsb_Msb };
       enum class Modes : uint8_t { Mode0, Mode1, Mode2, Mode3 };