From d63fb6f716b865fe1cede22787aa15834aecd868 Mon Sep 17 00:00:00 2001
From: mtei <2170248+mtei@users.noreply.github.com>
Date: Mon, 29 Oct 2018 02:23:48 +0900
Subject: helix serial.c: add some comment

---
 keyboards/helix/serial.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'keyboards/helix')

diff --git a/keyboards/helix/serial.c b/keyboards/helix/serial.c
index c813b6b9ae..24b889d30b 100644
--- a/keyboards/helix/serial.c
+++ b/keyboards/helix/serial.c
@@ -1,5 +1,10 @@
 /*
  * WARNING: be careful changing this code, it is very timing dependent
+ *
+ * 2018-10-28 checked
+ *  avr-gcc 4.9.2
+ *  avr-gcc 5.4.0
+ *  avr-gcc 7.3.0
  */
 
 #ifndef F_CPU
-- 
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