From c8c8601751d857c60faab8fe15f6c9f9130644b1 Mon Sep 17 00:00:00 2001
From: Firmware Batman <firmware@comma.ai>
Date: Wed, 19 Jul 2017 17:09:55 -0700
Subject: [PATCH] well that's a concern, O2 breaks comm over SPI

---
 board/build.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/board/build.mk b/board/build.mk
index a4a8b1256..5d34c9d94 100644
--- a/board/build.mk
+++ b/board/build.mk
@@ -1,4 +1,4 @@
-CFLAGS += -I inc -I ../ -nostdlib -fno-builtin -std=gnu11 -O2
+CFLAGS += -I inc -I ../ -nostdlib -fno-builtin -std=gnu11 -O0
 CFLAGS += -Tstm32_flash.ld
 
 CC = arm-none-eabi-gcc