From fdf808ee24fe8cdfbad7d3f6db905489549564bb Mon Sep 17 00:00:00 2001
From: flabbergast <s3+flabbergast@sdfeu.org>
Date: Thu, 11 Feb 2016 21:12:19 +0000
Subject: [PATCH] Chibios: Fix a HardFault bug (wait after start).

---
 tmk_core/protocol/chibios/main.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tmk_core/protocol/chibios/main.c b/tmk_core/protocol/chibios/main.c
index b62cfa9c..d588e4de 100644
--- a/tmk_core/protocol/chibios/main.c
+++ b/tmk_core/protocol/chibios/main.c
@@ -101,6 +101,13 @@ int main(void) {
   while(USB_DRIVER.state != USB_ACTIVE)
     chThdSleepMilliseconds(50);
 
+  /* Do need to wait here!
+   * Otherwise the next print might start a transfer on console EP
+   * before the USB is completely ready, which sometimes causes
+   * HardFaults.
+   */
+  chThdSleepMilliseconds(50);
+
   print("USB configured.\n");
 
   /* init TMK modules */
-- 
2.39.3