From 96017d6ec1816ab1c9bd95b0308b908b4708d388 Mon Sep 17 00:00:00 2001
From: Joey Castillo <joeycastillo@utexas.edu>
Date: Sat, 12 Feb 2022 22:23:13 -0500
Subject: movement: add mechanism for watch faces to use backup registers

---
 movement/movement.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'movement/movement.h')

diff --git a/movement/movement.h b/movement/movement.h
index cb2c9ca2..a29c4469 100644
--- a/movement/movement.h
+++ b/movement/movement.h
@@ -268,6 +268,9 @@ typedef struct {
     uint8_t tick_frequency;
     uint8_t last_second;
     uint8_t subsecond;
+
+    // backup register stuff
+    uint8_t next_available_backup_register;
 } movement_state_t;
 
 void movement_move_to_face(uint8_t watch_face_index);
@@ -287,4 +290,6 @@ void movement_cancel_background_task(void);
 void movement_play_signal(void);
 void movement_play_alarm(void);
 
+uint8_t movement_claim_backup_register(void);
+
 #endif // MOVEMENT_H_
-- 
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