client: Don't sleep in interrupt context

[tattlekey] / client / tattlekey.c

diff --git a/client/tattlekey.c b/client/tattlekey.c
index ec7710789fbf6efcc65e8cc7b085fe3f597a8f8a..05488eaa7c3a1e02d17170bd6aaa4116afcfad6d 100644 (file)
--- a/client/tattlekey.c
+++ b/client/tattlekey.c
@@ -1,10 +1,22 @@
 #include "pico/cyw43_arch.h"
 #include "pico/stdlib.h"
+#include "pico/util/queue.h"
 
 #include "blink.h"
+#include "button.h"
 #include "config.h"
 #include "net.h"
 
+queue_t queue;
+
+static void button_pressed() {
+  /* This runs in interrupt context; don't linger.  */
+  char zero = '\0';
+  /* We don't check for failure (full queue) here because there's not much to be
+   * done about it. */
+  queue_try_add(&queue, &zero);
+}
+
 int main() {
   stdio_init_all();
   if (cyw43_arch_init_with_country(CYW43_COUNTRY_USA))
@@ -17,8 +29,15 @@ int main() {
     signal_error_by_blinking();
   signal(3, 200);
 
-  for (int i = 0;; i++) {
-    send_report(i, 0);
+  queue_init(&queue, 1, 99);
+
+  begin_listening_for_button_press(button_pressed);
+
+  u16_t seq = 0;
+  while (1) {
+    char _;
+    queue_remove_blocking(&queue, &_);
+    send_report(seq++, 0);
     signal(4, 200);
   }
 }