From: Scott Worley <scottworley@scottworley.com>
Date: Mon, 9 Oct 2023 03:49:43 +0000 (-0700)
Subject: client: Send each report multiple times
X-Git-Tag: v0.1.0~54
X-Git-Url: http://git.scottworley.com/tattlekey/commitdiff_plain/ff379463e38b1cebd43d5c2ab8a0a0ae8e7a9b53?ds=sidebyside

client: Send each report multiple times

UDP is unreliable.

It would be better to re-send over a much longer interval, interleaving
re-sends from different presses.  Do this simple re-sending for now.
---

diff --git a/client/config.c b/client/config.c
index c5a38b4..de300ea 100644
--- a/client/config.c
+++ b/client/config.c
@@ -21,3 +21,7 @@ uint button_pin = 18;
 /* Don't bother reporting each separate button press when it is pressed many
  * times in short succession.  (We also use this to de-bounce. :) */
 u32_t minimum_microseconds_between_button_presses = 1000000;
+
+/* Send each report multiple times. */
+uint resend_count = 5;
+u32_t resend_interval_ms = 1000;
diff --git a/client/config.h b/client/config.h
index 5ce0baf..fefe7e9 100644
--- a/client/config.h
+++ b/client/config.h
@@ -25,4 +25,8 @@ extern uint button_pin;
  * times in short succession.  (We also use this to de-bounce. :) */
 extern u32_t minimum_microseconds_between_button_presses;
 
+/* Send each report multiple times. */
+extern uint resend_count;
+extern u32_t resend_interval_ms;
+
 #endif
diff --git a/client/tattlekey.c b/client/tattlekey.c
index 3a1f7b7..9e7b4b5 100644
--- a/client/tattlekey.c
+++ b/client/tattlekey.c
@@ -42,7 +42,11 @@ int main() {
   while (1) {
     char _;
     queue_remove_blocking(&queue, &_);
-    send_report(seq++, 0);
-    signal(2, 100);
+    seq++;
+    for (int i = 0; i < resend_count; i++) {
+      send_report(seq, i);
+      signal(i == 0 ? 2 : 1, 100);
+      sleep_ms(resend_interval_ms);
+    }
   }
 }