minor tweaks

Author: maholli

ports/atmel-samd/common-hal/alarm/pin/PinAlarm.c

@@ -29,7 +29,7 @@
 #include "eic_handler.h"
 #include "atmel_start_pins.h"
 #include "hal/include/hal_gpio.h"
-#include <stdio.h>
+// #include <stdio.h>
 
 
 #include "shared-bindings/alarm/pin/PinAlarm.h"

ports/atmel-samd/common-hal/alarm/time/TimeAlarm.c

@@ -35,7 +35,7 @@
 STATIC volatile bool woke_up;
 STATIC uint32_t deep_sleep_ticks;
 // TODO: replace timealarm_on with SAMD_ALARM_FLAG bit flags
-STATIC bool timealarm_on;
+STATIC volatile bool timealarm_on;
 
 void common_hal_alarm_time_timealarm_construct(alarm_time_timealarm_obj_t *self, mp_float_t monotonic_time) {
     // TODO: throw a ValueError if the input time exceeds the maximum