From d75c1fd76c0e8a0dc0b212b838ea6fae17cc14a1 Mon Sep 17 00:00:00 2001
From: Kaspar Schleiser <kaspar@schleiser.de>
Date: Wed, 13 Mar 2019 17:21:44 +0100
Subject: [PATCH] sys/riotboot: introduce riotboot_slot_other()

---
 sys/include/riotboot/slot.h | 7 +++++++
 sys/riotboot/slot.c         | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/sys/include/riotboot/slot.h b/sys/include/riotboot/slot.h
index 24d65e32da..dbbb11f686 100644
--- a/sys/include/riotboot/slot.h
+++ b/sys/include/riotboot/slot.h
@@ -38,6 +38,13 @@ extern "C" {
  */
 int riotboot_slot_current(void);
 
+/**
+ * @brief  Get currently not running image slot
+ *
+ * @returns nr of currently inactive slot
+ */
+int riotboot_slot_other(void);
+
 /**
  * @brief  Get jump-to address of image slot
  *
diff --git a/sys/riotboot/slot.c b/sys/riotboot/slot.c
index 4d38e6568d..b7c288d3f6 100644
--- a/sys/riotboot/slot.c
+++ b/sys/riotboot/slot.c
@@ -60,6 +60,11 @@ int riotboot_slot_current(void)
     return -1;
 }
 
+int riotboot_slot_other(void)
+{
+    return riotboot_slot_current() ? 0 : 1;
+}
+
 void riotboot_slot_jump(unsigned slot)
 {
     _riotboot_slot_jump_to_image(riotboot_slot_get_hdr(slot));