From 95adfdffb7faa517082ecaffa6aa7b291c5ba617 Mon Sep 17 00:00:00 2001
From: XANTRONIX Development <dev@xantronix.com>
Date: Sat, 23 Dec 2023 23:59:13 -0500
Subject: [PATCH] Begin mapping out CAN bus transmit scheduler

---
 include/hexagram/schedule.h | 27 +++++++++++++++++++++++++++
 include/hexagram/table.h    | 15 +++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 include/hexagram/schedule.h
 create mode 100644 include/hexagram/table.h

diff --git a/include/hexagram/schedule.h b/include/hexagram/schedule.h
new file mode 100644
index 0000000..c462a2c
--- /dev/null
+++ b/include/hexagram/schedule.h
@@ -0,0 +1,27 @@
+#ifndef _HEXAGRAM_SCHEDULE_H
+#define _HEXAGRAM_SCHEDULE_H
+
+#include <time.h>
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <hexagram/table.h>
+
+typedef struct _hexagram_schedule_slot {
+    time_t interval_us;
+    hexagram_table_entry *entry;
+} hexagram_schedule_slot;
+
+typedef struct _hexagram_schedule {
+    size_t current;
+    timer_t timer;
+} hexagram_schedule;
+
+hexagram_schedule *hexagram_schedule_create(hexagram_table_entry *table,
+                                            size_t count);
+
+int hexagram_schedule_run(hexagram_schedule *schedule);
+
+int hexagram_schedule_stop(hexagram_schedule *schedule);
+
+#endif /* _HEXAGRAM_SCHEDULE_H */
diff --git a/include/hexagram/table.h b/include/hexagram/table.h
new file mode 100644
index 0000000..ada1b0f
--- /dev/null
+++ b/include/hexagram/table.h
@@ -0,0 +1,15 @@
+#ifndef _HEXAGRAM_TABLE_H
+#define _HEXAGRAM_TABLE_H
+
+#include <sys/time.h>
+#include <hexagram/can.h>
+
+typedef struct _hexagram_table_entry {
+    time_t freq_us;
+    hexagram_can_if *iface;
+    struct can_frame frame;
+} hexagram_table_entry;
+
+int hexagram_table_entry_send(hexagram_table_entry *entry);
+
+#endif /* _HEXAGRAM_TABLE_H */