From 2b7d217ebb44934dd8554f3505ab656106649a11 Mon Sep 17 00:00:00 2001
From: Jun Wako <wakojun@gmail.com>
Date: Thu, 26 Mar 2015 15:09:28 +0900
Subject: [PATCH] Fix for dfu-programmer 0.7 #182

---
 rules.mk | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/rules.mk b/rules.mk
index 83c9da5f..d0675663 100644
--- a/rules.mk
+++ b/rules.mk
@@ -419,6 +419,11 @@ flip: $(TARGET).hex
 	batchisp -hardware usb -device $(MCU) -operation start reset 0
 
 dfu: $(TARGET).hex
+ifneq (, $(findstring 0.7, $(shell dfu-programmer --version 2>&1)))
+	dfu-programmer $(MCU) erase --force
+else
+	dfu-programmer $(MCU) erase
+endif
 	dfu-programmer $(MCU) erase
 	dfu-programmer $(MCU) flash $(TARGET).hex
 	dfu-programmer $(MCU) reset