sanitize ISR IRAM_ATTR and global vars

include/display.h

@@ -5,6 +5,7 @@
 #include "cyclic.h"
 #include "qrcode.h"
 #include "power.h"
+#include "timekeeper.h"
 
 #if (HAS_DISPLAY) == 1
 #include <OneBitDisplay.h>

include/irqhandler.h

@@ -24,7 +24,7 @@
 void irqHandler(void *pvParameters);
 void mask_user_IRQ();
 void unmask_user_IRQ();
-void doIRQ(int irq);
+void IRAM_ATTR doIRQ(int irq);
 
 extern TaskHandle_t irqHandlerTask;
 

include/timekeeper.h

@@ -20,8 +20,9 @@ extern const char timeSetSymbols[];
 extern Ticker timesyncer;
 extern timesource_t timeSource;
 extern TaskHandle_t ClockTask;
-extern bool volatile TimePulseTick; // 1sec pps flag set by GPS or RTC
+extern DRAM_ATTR bool TimePulseTick; // 1sec pps flag set by GPS or RTC
 extern hw_timer_t *ppsIRQ;
+extern portMUX_TYPE mux;
 
 void IRAM_ATTR CLOCKIRQ(void);
 void clock_init(void);