From ed9db807605e81a740e68e625bbe6b333581fcc0 Mon Sep 17 00:00:00 2001
From: Scott Shawcroft <scott@adafruit.com>
Date: Tue, 13 Nov 2018 10:43:18 -0800
Subject: [PATCH] Switch SAMD51 back to -Os

It messes up neopixel timing otherwise.

Fixes #1326
---
 ports/atmel-samd/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ports/atmel-samd/Makefile b/ports/atmel-samd/Makefile
index 552be92be8..23fb39779c 100644
--- a/ports/atmel-samd/Makefile
+++ b/ports/atmel-samd/Makefile
@@ -93,7 +93,7 @@ CFLAGS += -DCFG_TUSB_MCU=OPT_MCU_SAMD21 -DCFG_TUD_CDC_RX_BUFSIZE=128 -DCFG_TUD_C
 endif
 
 ifeq ($(CHIP_FAMILY), samd51)
-CFLAGS += -O0 -DNDEBUG
+CFLAGS += -Os -DNDEBUG
 # TinyUSB defines
 CFLAGS += -DCFG_TUSB_MCU=OPT_MCU_SAMD51 -DCFG_TUD_CDC_RX_BUFSIZE=256 -DCFG_TUD_CDC_TX_BUFSIZE=256 -DCFG_TUD_MSC_BUFSIZE=1024
 endif