From f0ef22232b4e6bf7030aefd7f029a4a320c47b91 Mon Sep 17 00:00:00 2001
From: smlng <s@mlng.net>
Date: Wed, 1 Nov 2017 17:09:10 +0100
Subject: [PATCH] bluepill: dfu-util support
---
boards/bluepill/Makefile.include | 19 +++++++++++-
cpu/stm32f1/ldscripts/stm32f103c8_bluepill.ld | 29 +++++++++++++++++++
2 files changed, 47 insertions(+), 1 deletion(-)
create mode 100644 cpu/stm32f1/ldscripts/stm32f103c8_bluepill.ld
diff --git a/boards/bluepill/Makefile.include b/boards/bluepill/Makefile.include
index b666f26bc5..394d1257ac 100644
--- a/boards/bluepill/Makefile.include
+++ b/boards/bluepill/Makefile.include
@@ -9,5 +9,22 @@ PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.SLAB_USBtoUART*)))
# setup serial terminal
include $(RIOTMAKE)/tools/serial.inc.mk
-# this board uses openocd
+# optionally, use dfu-util to flash via usb
+# note: needs a bootloader flashed before, config below is compatible
+# with blackmagic_dfu, see https://github.com/blacksphere/blackmagic/
+# To stop bootloader from loading an existing firmware, pull down
+# (ground) GPIO B1.
+ifeq ($(PROGRAMMER),dfu-util)
+ export LINKER_SCRIPT = stm32f103c8_bluepill.ld
+ export BINFILE = $(patsubst %.elf,%.bin,$(ELFFILE))
+
+ export FLASHER = dfu-util
+ export DEBUGGER = # no debugger
+ export RESET = # dfu-util has no support for resetting the device
+
+ export OFLAGS = -O binary
+ export FFLAGS = -d 1d50:6017 -s 0x08002000:leave -D "$(HEXFILE)"
+else
+# this board uses openocd by default
include $(RIOTMAKE)/tools/openocd.inc.mk
+endif
diff --git a/cpu/stm32f1/ldscripts/stm32f103c8_bluepill.ld b/cpu/stm32f1/ldscripts/stm32f103c8_bluepill.ld
new file mode 100644
index 0000000000..4181d1d7a2
--- /dev/null
+++ b/cpu/stm32f1/ldscripts/stm32f103c8_bluepill.ld
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2015 Alexander Melnikov <avmelnikoff@gmail.com>
+ * 2017 HAW Hamburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @addtogroup cpu_stm32f1
+ * @{
+ *
+ * @file
+ * @brief Memory definitions for the STM32F103C8
+ *
+ * @author Alexander Melnikov <avmelnikoff@gmail.com>
+ * @author Sebastian Meiling <s@mlng.net>
+ *
+ * @}
+ */
+
+MEMORY
+{
+ rom (rx) : ORIGIN = 0x08002000, LENGTH = 64K-0x2000
+ ram (xrw) : ORIGIN = 0x20000000, LENGTH = 20K
+}
+
+INCLUDE cortexm_base.ld
--
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