bugfix IRQ masking

include/globals.h

@@ -42,8 +42,8 @@
 #define SCREEN_MODE (0x80)
 
 // I2C bus access control
-#define I2C_MUTEX_LOCK() xSemaphoreTake(I2Caccess, pdMS_TO_TICKS(10)) == pdTRUE
-#define I2C_MUTEX_UNLOCK() xSemaphoreGive(I2Caccess)
+#define I2C_MUTEX_LOCK() (xSemaphoreTake(I2Caccess, pdMS_TO_TICKS(10)) == pdTRUE)
+#define I2C_MUTEX_UNLOCK() (xSemaphoreGive(I2Caccess))
 
 // Struct holding devices's runtime configuration
 typedef struct {

include/irqhandler.h

@@ -17,8 +17,8 @@
 #include "timekeeper.h"
 
 void irqHandler(void *pvParameters);
-bool mask_user_IRQ();
-bool unmask_user_IRQ();
+int mask_user_IRQ();
+int unmask_user_IRQ();
 
 #ifdef HAS_DISPLAY
 void IRAM_ATTR DisplayIRQ();