client: Explain the exponential re-send delay

[tattlekey] / client / tattlekey.c

diff --git a/client/tattlekey.c b/client/tattlekey.c
index 9f28e455ba9993cbf7a295ddc74e7d0ed69c87ab..9d255856b74a41cc93dc8d2a5a927dff6571e4ba 100644 (file)
--- a/client/tattlekey.c
+++ b/client/tattlekey.c
@@ -1,3 +1,20 @@
+/* tattlekey: A one-key UDP keyboard
+ * Copyright (C) 2023  Scott Worley <scottworley@scottworley.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "pico/cyw43_arch.h"
 #include "pico/stdlib.h"
 #include "pico/util/pheap.h"
@@ -60,7 +77,6 @@ void set_resend_alarm(int alarm, uint32_t now, uint32_t next_act_time) {
   if (hardware_alarm_set_target(alarm,
                                 make_timeout_time_ms(sleep_duration * 1000)))
     signal_error_by_blinking();
-  return;
 }
 
 void service_sleeps(int alarm, press_pile_t *pp) {