boards/common/blxxxpill: Use STM32 programmer conf

boards/common/blxxxpill/Makefile.include

@@ -1,36 +1,11 @@
 INCLUDES += -I$(RIOTBOARD)/common/blxxxpill/include
 
-# define the default port depending on the host OS
-PORT_LINUX ?= /dev/ttyUSB0
-PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.SLAB_USBtoUART*)))
+# For older versions of the DFU bootloader, set DFU_USB_ID to 1d50:6017 and
+# uncomment the DFU_FLAGS line
+DFU_USB_ID ?= 1eaf:0003
+#DFU_FLAGS ?= -s 0x08002000:leave
 
-# setup serial terminal
-include $(RIOTMAKE)/tools/serial.inc.mk
+STLINK_VERSION ?= 2
 
-# 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 ROM_OFFSET ?= 0x2000 # Skip the space needed by the embedded bootloader
-  FLASHER = dfu-util
-  DEBUGGER = # no debugger
-  RESET ?= # dfu-util has no support for resetting the device
-
-  FLASHFILE ?= $(BINFILE)
-  FFLAGS = -d 1eaf:0003 -a 2 -D $(FLASHFILE)
-  # for older bootloader versions use this:
-  # FFLAGS = -d 1d50:6017 -s 0x08002000:leave -D $(FLASHFILE)
-else
-
-  # this board uses openocd by default
-  DEBUG_ADAPTER ?= stlink
-  STLINK_VERSION ?= 2
-
-  # call a 'reset halt' command before starting the debugger
-  # it is required as `connect_assert_srst` is set
-  export OPENOCD_DBG_START_CMD = -c 'reset halt'
-
-  include $(RIOTMAKE)/tools/openocd.inc.mk
-endif
+# Setup of programmer and serial is shared between STM32 based boards
+include $(RIOTMAKE)/boards/stm32.inc.mk