Verify the main app mostly sleeps

This validates that the main watch app spends at
least 99.5% of it's time sleeping in the first 10
seconds.

firmware/Application/Screens/BigDigitalTimeScreen.cpp

@@ -37,7 +37,7 @@ BigDigitalTimeScreen::BigDigitalTimeScreen(BSP::DisplayDriver &driver,
     , m_last_time()
     , m_manager(manager)
     , m_menu_screen(menu_screen)
-    , m_display_seconds(true)
+    , m_display_seconds(false)
 {}
 
 static char get_char_for_digit(uint8_t bcd_digit)

firmware/Application/main.cpp

@@ -104,10 +104,16 @@ static BigDigitalTimeScreen g_digital_time_screen(g_display, g_screen_mgr, g_mai
 
 [[noreturn]] void main() {
 
+    g_gpioa.init();
+    g_gpioa.enable();
+
+    g_dbg0.configure_output(GpioDriver::output_mode_t::PUSH_PULL,
+                            GpioDriver::output_speed_t::LOW);
+
     // Set up the system clock
     RtcDriver::init();
     SystemTimer::set_timer(RtcDriver::get_system_timer());
-    LowPower::init();
+    LowPower::init(g_dbg0);
 
     // Initialize the tasks
     g_lptim_pwm.init();
@@ -115,7 +121,7 @@ static BigDigitalTimeScreen g_digital_time_screen(g_display, g_screen_mgr, g_mai
     g_btn_mgr.init();
     g_display.init();
     g_screen_mgr.init();
-    g_screen_mgr.set_root_screen(g_analog_time_screen);
+    g_screen_mgr.set_root_screen(g_digital_time_screen);
 
     g_set_face_screen.add_item(MenuScreenItem("Analog",
                                               []() { g_screen_mgr.set_root_screen(g_analog_time_screen); }));