net: event handler

in subsys.h: include init.h to ensure l5_initcall availability

also: add example/ directory to provide some user-code in the skeleton
(will likely be made defunct as i make the remainder of the skeleton,
such as a /ping command and user action and maybe some buttons, which
will require more organisation)

1 files changed, 20 insertions, 0 deletions

diff --git a/include/dbs/event.h b/include/dbs/event.h
new file mode 100644
index 0000000..6be3378
--- /dev/null
+++ b/include/dbs/event.h
@@ -0,0 +1,20 @@
+#ifndef __EVENT_H
+#define __EVENT_H
+
+#include <dbs/init.h>
+
+enum Event {
+#define E(ev_name, _) ev_name,
+#include <dbs/bits/events.h>
+#undef E
+};
+
+int ev_set_handler(enum Event event, int (*ev_handler)(cJSON*));
+
+#define declare_event(event, handler) \
+    void __decl_##event_##handler() { \
+        ev_set_handler(event, handler); \
+    } \
+    l3_initcall(__decl_##event_##handler)
+
+#endif