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82ea9a02de
The STM32F103C8 secretly comes with 128KiB flash instead of 64KiB. Still, only
64KiB of it are tested and guaranteed to work. However, most of the times the
whole 128KiB flash works just fine. In the BluePill documentation this fact is
already documented and by using
$ make BOARD=bluepill CPU_MODEL=stm32f103cb
the whole 128 KiB can be used by RIOT. When using this hack routinely, it easier
to use environment variables instead. But allowing to overwrite CPU_MODEL via
environment variables seems to be a bad thing, as it is easy to forget to clear
that environment variable when changing the BOARD variable.
This commit introduces the new STM32F103C8_FLASH_HACK variable, which unlocks
the 128KiB FLASH when set to "1". The BluePill documentation has been updated
accordingly.
46 lines
1.4 KiB
Makefile
46 lines
1.4 KiB
Makefile
## the cpu to build for
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export CPU = stm32f1
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STM32F103C8_FLASH_HACK ?= 0
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ifneq ($(STM32F103C8_FLASH_HACK),0)
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export CPU_MODEL = stm32f103cb
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else
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export CPU_MODEL = stm32f103c8
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endif
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INCLUDES += -I$(RIOTBOARD)/common/stm32f103c8/include
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# define the default port depending on the host OS
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PORT_LINUX ?= /dev/ttyUSB0
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PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.SLAB_USBtoUART*)))
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# setup serial terminal
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include $(RIOTMAKE)/tools/serial.inc.mk
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# optionally, use dfu-util to flash via usb
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# note: needs a bootloader flashed before, config below is compatible
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# with blackmagic_dfu, see https://github.com/blacksphere/blackmagic/
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# To stop bootloader from loading an existing firmware, pull down
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# (ground) GPIO B1.
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ifeq ($(PROGRAMMER),dfu-util)
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export ROM_OFFSET ?= 0x2000 # Skip the space needed by the embedded bootloader
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export FLASHER = dfu-util
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export DEBUGGER = # no debugger
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export RESET = # dfu-util has no support for resetting the device
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HEXFILE = $(BINFILE)
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export FFLAGS = -d 1eaf:0003 -a 2 -D "$(HEXFILE)"
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# for older bootloader versions use this:
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#export FFLAGS = -d 1d50:6017 -s 0x08002000:leave -D "$(HEXFILE)"
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else
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# this board uses openocd by default
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export DEBUG_ADAPTER ?= stlink
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export STLINK_VERSION ?= 2
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# call a 'reset halt' command before starting the debugger
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# it is required as `connect_assert_srst` is set
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export OPENOCD_DBG_START_CMD = -c 'reset halt'
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include $(RIOTMAKE)/tools/openocd.inc.mk
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endif
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