kernel: add k_uptime_seconds

Add a helper function for retrieving the system uptime in seconds
without having to do a second division.

Signed-off-by: Jordan Yates <jordan@embeint.com>

doc/releases/release-notes-3.7.rst

@@ -71,6 +71,11 @@ Architectures
 
 * Xtensa
 
+Kernel
+******
+
+  * Added :c:func:`k_uptime_seconds` function to simplify `k_uptime_get() / 1000` usage.
+
 Bluetooth
 *********
 

include/zephyr/kernel.h

@@ -1774,6 +1774,19 @@ static inline uint32_t k_uptime_get_32(void)
 	return (uint32_t)k_uptime_get();
 }
 
+/**
+ * @brief Get system uptime in seconds.
+ *
+ * This routine returns the elapsed time since the system booted,
+ * in seconds.
+ *
+ * @return Current uptime in seconds.
+ */
+static inline uint32_t k_uptime_seconds(void)
+{
+	return k_ticks_to_sec_floor32(k_uptime_ticks());
+}
+
 /**
  * @brief Get elapsed time.
  *