Merge pull request #175 from KunYi/master

stm32f4xx: use --connect-under-reset for st-flash

Author: jserv

platform/stm32f4/build.mk

@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-chip-y = 
+chip-y =
 
 loader-chip-y = \
 	gpio.loader.o \
@@ -13,7 +13,7 @@ loader-chip-y = \
 
 # FIXME: move to toplevel definitions
 platform-flash-command = \
-	st-flash write $(1) 0x8000000 || \
+	st-flash --connect-under-reset write $(1) 0x8000000 || \
 	openocd -f interface/stlink-v2.cfg \
 		-f target/stm32f4x_stlink.cfg \
 		-c "init" \

platform/stm32f429/build.mk

@@ -21,7 +21,7 @@ loader-chip-y = \
 
 # FIXME: move to toplevel definitions
 platform-flash-command = \
-	st-flash write $(1) 0x8000000 || \
+	st-flash --connect-under-reset write $(1) 0x8000000 || \
 	openocd -f interface/stlink-v2.cfg \
 		-f target/stm32f4x_stlink.cfg \
 		-c "init" \