press_pile_t *create_press_pile();
-void create_press(press_pile_t *pp, uint32_t timestamp, u16_t seq);
+/* Adds this press to the pile.
+ * Copies the contents of `press`. */
+void add_press(press_pile_t *pp, press_t *press);
/* When do we next need to send something (in seconds since boot)?
* Returns -1 if there's nothing pending. */
int32_t next_scheduled_send(press_pile_t *pp);
+/* Find a press ready for resend at or before `now`.
+ * Move it out of the press-pile `pp` and into into `press`.
+ * Or return false if there is no press due for re-send. */
+bool get_press_due_for_resend(press_pile_t *pp, uint32_t now, press_t *press);
+
#endif