git.scottworley.com Git - tattlekey/blob - client/press.h

   1 #ifndef SENDS_H
   2 #define SENDS_H
   3
   4 #include "pico/cyw43_arch.h"
   5 #include "pico/util/pheap.h"
   6 #include "pico/util/queue.h"
   7
   8 typedef struct {
   9   uint32_t timestamp;
  10   u16_t seq;
  11   u8_t send_count;
  12 } press_t;
  13
  14 typedef struct {
  15   /* Queues of various sizes that hold presses.  There is one queue for each
  16    * send_count. */
  17   queue_t *presses;
  18
  19   /* Tracks when each queue will be next ready-to-send.  Empty queues are not in
  20    * the heap. */
  21   pheap_t *sleeps_heap;
  22
  23   /* The companion-array for the heap. */
  24   queue_t **sleeps;
  25
  26 } press_pile_t;
  27
  28 press_pile_t *create_press_pile();
  29
  30 /* Adds this press to the pile.
  31  * Copies the contents of `press`. */
  32 void add_press(press_pile_t *pp, press_t *press);
  33
  34 /* When do we next need to send something (in seconds since boot)?
  35  * Returns -1 if there's nothing pending. */
  36 int32_t next_scheduled_send(press_pile_t *pp);
  37
  38 /* Find a press ready for resend at or before `now`.
  39  * Move it out of the press-pile `pp` and into into `press`.
  40  * Or return false if there is no press due for re-send. */
  41 bool get_press_due_for_resend(press_pile_t *pp, uint32_t now, press_t *press);
  42
  43 #endif