Added a function to get the current phase of the stairs algorithm.

include/stairs.h

@@ -15,6 +15,7 @@ inline uint16_t stairs_get_period(void);
 void stairs_start(void);
 void stairs_stop(void);
 uint8_t is_climbing_stairs(void);
+uint8_t stairs_get_phase(void);
 
 // operation functions
 uint8_t stairs_in_range(unsigned short int address, unsigned short int length);

src/stairs.c

@@ -112,6 +112,11 @@ uint8_t is_climbing_stairs(void)
     return 0x00;
 }
 
+uint8_t stairs_get_phase(void)
+{
+  return (int8_t)ram_data[DARWIN_STAIRS_CNTRL]&STAIRS_PHASE;
+}
+
 // motion manager interface functions
 void stairs_process(void)
 {