Merge pull request #17 from fsantini/master

Added system_declares.c

system_declares.c

@@ -0,0 +1,15 @@
+#include "config.h"
+
+int32_t sys_position[N_AXIS];      // Real-time machine (aka home) position vector in steps.
+int32_t sys_probe_position[N_AXIS]; // Last probe position in machine coordinates and steps.
+
+volatile uint8_t sys_probe_state;   // Probing state value.  Used to coordinate the probing cycle with stepper ISR.
+volatile uint8_t sys_rt_exec_state;   // Global realtime executor bitflag variable for state management. See EXEC bitmasks.
+volatile uint8_t sys_rt_exec_alarm;   // Global realtime executor bitflag variable for setting various alarms.
+volatile uint8_t sys_rt_exec_motion_override; // Global realtime executor bitflag variable for motion-based overrides.
+volatile uint8_t sys_rt_exec_accessory_override; // Global realtime executor bitflag variable for spindle/coolant overrides.
+
+#ifdef DEBUG
+  #define EXEC_DEBUG_REPORT  bit(0)
+  volatile uint8_t sys_rt_exec_debug;
+#endif