From 3e7c875e0cb8dbc6900ade04255cba7613cda964 Mon Sep 17 00:00:00 2001
From: Barnaby Shearer <b@zi.is>
Date: Tue, 16 Nov 2021 09:17:20 +0000
Subject: [PATCH] source doc link

---
 docs/efm8.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/efm8.rst b/docs/efm8.rst
index 19d8b6b..8e7e2ec 100644
--- a/docs/efm8.rst
+++ b/docs/efm8.rst
@@ -3,5 +3,9 @@
 
 ----------
 
+The protocol is documented in AN945_.
+
 .. automodule:: efm8
    :members:
+
+.. _AN945: https://www.silabs.com/documents/public/application-notes/an945-efm8-factory-bootloader-user-guide.pdf