X-Git-Url: http://git.scottworley.com/tattlekey/blobdiff_plain/1d699cc3048d7e1dfed4f13e455cd2ede3d52101..d1521eda56a4768dbf481aa6cf9e75c5a5a7e7f1:/client/config.h

diff --git a/client/config.h b/client/config.h
index 97e2f8c..95c5651 100644
--- a/client/config.h
+++ b/client/config.h
@@ -14,4 +14,11 @@ extern u16_t tattle_port;
 /* For distinguishing reports from multiple tattlekey devices. */
 extern u16_t this_tattler_identity;
 
+/* Which GPIO pin is the button connected to?
+ * The button should span this pin and ground, connecting this pin to ground
+ * when pressed.
+ * https://projects.raspberrypi.org/en/projects/introduction-to-the-pico/10
+ * recommends pins 18, 22, or 28. */
+extern uint button_pin;
+
 #endif