Init
This commit is contained in:
Imbus
commit
e9e8b7118d
5 changed files with 235 additions and 0 deletions
6
.gitignore
vendored
Normal file
6
.gitignore
vendored
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
bin/
|
||||
.cache
|
||||
*.elf
|
||||
*.bin
|
||||
generated.*.ld
|
||||
compile_commands.json
|
||||
3
.gitmodules
vendored
Normal file
3
.gitmodules
vendored
Normal file
|
|
@ -0,0 +1,3 @@
|
|||
[submodule "libopencm3"]
|
||||
path = libopencm3
|
||||
url = https://github.com/libopencm3/libopencm3
|
||||
17
Makefile
Normal file
17
Makefile
Normal file
|
|
@ -0,0 +1,17 @@
|
|||
PROJECT = main
|
||||
BUILD_DIR = bin
|
||||
|
||||
CFILES = main.c
|
||||
|
||||
# TODO - you will need to edit these two lines!
|
||||
DEVICE=STM32F103C6
|
||||
# OOCD_FILE = board/stm32f4discovery.cfg
|
||||
|
||||
# You shouldn't have to edit anything below here.
|
||||
# VPATH += $(SHARED_DIR)
|
||||
INCLUDES += $(patsubst %,-I%, . $(SHARED_DIR))
|
||||
OPENCM3_DIR=./libopencm3
|
||||
|
||||
include $(OPENCM3_DIR)/mk/genlink-config.mk
|
||||
include ./rules.mk
|
||||
include $(OPENCM3_DIR)/mk/genlink-rules.mk
|
||||
32
main.c
Normal file
32
main.c
Normal file
|
|
@ -0,0 +1,32 @@
|
|||
#include <libopencm3/stm32/gpio.h>
|
||||
#include <libopencm3/stm32/rcc.h>
|
||||
|
||||
static void clock_setup(void) {
|
||||
// Use external 8 MHz HSE and PLL to 72 MHz
|
||||
rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
|
||||
rcc_periph_clock_enable(RCC_GPIOC);
|
||||
}
|
||||
|
||||
static void gpio_setup(void) {
|
||||
// gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO13);
|
||||
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL,
|
||||
GPIO13);
|
||||
}
|
||||
|
||||
static void delay(volatile uint32_t count) {
|
||||
while (count-- > 0) {
|
||||
__asm__("nop");
|
||||
}
|
||||
}
|
||||
|
||||
int main(void) {
|
||||
clock_setup();
|
||||
gpio_setup();
|
||||
|
||||
while (1) {
|
||||
gpio_toggle(GPIOC, GPIO13); // On Blue Pill: LED is on PC13
|
||||
delay(10000000); // Crude delay loop
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
177
rules.mk
Normal file
177
rules.mk
Normal file
|
|
@ -0,0 +1,177 @@
|
|||
# This version of rules.mk expects the following to be defined before
|
||||
# inclusion..
|
||||
### REQUIRED ###
|
||||
# OPENCM3_DIR - duh
|
||||
# PROJECT - will be the basename of the output elf, eg usb-gadget0-stm32f4disco
|
||||
# CFILES - basenames only, eg main.c blah.c
|
||||
# CXXFILES - same for C++ files. Must have cxx suffix!
|
||||
# DEVICE - the full device name, eg stm32f405ret6
|
||||
# _or_
|
||||
# LDSCRIPT - full path, eg ../../examples/stm32/f4/stm32f4-discovery/stm32f4-discovery.ld
|
||||
# OPENCM3_LIB - the basename, eg: opencm3_stm32f4
|
||||
# OPENCM3_DEFS - the target define eg: -DSTM32F4
|
||||
# ARCH_FLAGS - eg, -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
|
||||
# (ie, the full set of cpu arch flags, _none_ are defined in this file)
|
||||
#
|
||||
### OPTIONAL ###
|
||||
# INCLUDES - fully formed -I paths, if you want extra, eg -I../shared
|
||||
# BUILD_DIR - defaults to bin, should set this if you are building multiarch
|
||||
# OPT - full -O flag, defaults to -Os
|
||||
# CSTD - defaults -std=c99
|
||||
# CXXSTD - no default.
|
||||
# OOCD_INTERFACE - eg stlink-v2
|
||||
# OOCD_TARGET - eg stm32f4x
|
||||
# both only used if you use the "make flash" target.
|
||||
# OOCD_FILE - eg my.openocd.cfg
|
||||
# This overrides interface/target above, and is used as just -f FILE
|
||||
### TODO/FIXME/notes ###
|
||||
# No support for stylecheck.
|
||||
# No support for BMP/texane/random flash methods, no plans either
|
||||
# No support for magically finding the library.
|
||||
# C++ hasn't been actually tested with this..... sorry bout that. ;)
|
||||
# Second expansion/secondary not set, add this if you need them.
|
||||
|
||||
BUILD_DIR ?= bin
|
||||
OPT ?= -Os
|
||||
CSTD ?= -std=c99
|
||||
|
||||
# Be silent per default, but 'make V=1' will show all compiler calls.
|
||||
# If you're insane, V=99 will print out all sorts of things.
|
||||
V?=0
|
||||
ifeq ($(V),0)
|
||||
Q := @
|
||||
NULL := 2>/dev/null
|
||||
endif
|
||||
|
||||
# Tool paths.
|
||||
PREFIX ?= arm-none-eabi-
|
||||
CC = $(PREFIX)gcc
|
||||
CXX = $(PREFIX)g++
|
||||
LD = $(PREFIX)gcc
|
||||
OBJCOPY = $(PREFIX)objcopy
|
||||
OBJDUMP = $(PREFIX)objdump
|
||||
OOCD ?= openocd
|
||||
|
||||
OPENCM3_INC = $(OPENCM3_DIR)/include
|
||||
|
||||
# Inclusion of library header files
|
||||
INCLUDES += $(patsubst %,-I%, . $(OPENCM3_INC) )
|
||||
|
||||
OBJS = $(CFILES:%.c=$(BUILD_DIR)/%.o)
|
||||
OBJS += $(CXXFILES:%.cxx=$(BUILD_DIR)/%.o)
|
||||
OBJS += $(AFILES:%.S=$(BUILD_DIR)/%.o)
|
||||
GENERATED_BINS = $(PROJECT).elf $(PROJECT).bin $(PROJECT).map $(PROJECT).list $(PROJECT).lss
|
||||
|
||||
TGT_CPPFLAGS += -MD
|
||||
TGT_CPPFLAGS += -Wall -Wundef $(INCLUDES)
|
||||
TGT_CPPFLAGS += $(INCLUDES) $(OPENCM3_DEFS)
|
||||
|
||||
TGT_CFLAGS += $(OPT) $(CSTD) -ggdb3
|
||||
TGT_CFLAGS += $(ARCH_FLAGS)
|
||||
TGT_CFLAGS += -fno-common
|
||||
TGT_CFLAGS += -ffunction-sections -fdata-sections
|
||||
TGT_CFLAGS += -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration
|
||||
TGT_CFLAGS += -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes
|
||||
|
||||
TGT_CXXFLAGS += $(OPT) $(CXXSTD) -ggdb3
|
||||
TGT_CXXFLAGS += $(ARCH_FLAGS)
|
||||
TGT_CXXFLAGS += -fno-common
|
||||
TGT_CXXFLAGS += -ffunction-sections -fdata-sections
|
||||
TGT_CXXFLAGS += -Wextra -Wshadow -Wredundant-decls -Weffc++
|
||||
|
||||
TGT_ASFLAGS += $(OPT) $(ARCH_FLAGS) -ggdb3
|
||||
|
||||
TGT_LDFLAGS += -T$(LDSCRIPT) -L$(OPENCM3_DIR)/lib -nostartfiles
|
||||
TGT_LDFLAGS += $(ARCH_FLAGS)
|
||||
TGT_LDFLAGS += -specs=nano.specs
|
||||
TGT_LDFLAGS += -Wl,--gc-sections
|
||||
# OPTIONAL
|
||||
#TGT_LDFLAGS += -Wl,-Map=$(PROJECT).map
|
||||
ifeq ($(V),99)
|
||||
TGT_LDFLAGS += -Wl,--print-gc-sections
|
||||
endif
|
||||
|
||||
# Linker script generator fills this in for us.
|
||||
ifeq (,$(DEVICE))
|
||||
LDLIBS += -l$(OPENCM3_LIB)
|
||||
endif
|
||||
# nosys is only in newer gcc-arm-embedded...
|
||||
#LDLIBS += -specs=nosys.specs
|
||||
LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
|
||||
|
||||
# Burn in legacy hell fortran modula pascal yacc idontevenwat
|
||||
.SUFFIXES:
|
||||
.SUFFIXES: .c .S .h .o .cxx .elf .bin .list .lss
|
||||
|
||||
# Bad make, never *ever* try to get a file out of source control by yourself.
|
||||
%: %,v
|
||||
%: RCS/%,v
|
||||
%: RCS/%
|
||||
%: s.%
|
||||
%: SCCS/s.%
|
||||
|
||||
all: $(PROJECT).elf $(PROJECT).bin
|
||||
flash: $(PROJECT).flash
|
||||
|
||||
# error if not using linker script generator
|
||||
ifeq (,$(DEVICE))
|
||||
$(LDSCRIPT):
|
||||
ifeq (,$(wildcard $(LDSCRIPT)))
|
||||
$(error Unable to find specified linker script: $(LDSCRIPT))
|
||||
endif
|
||||
else
|
||||
# if linker script generator was used, make sure it's cleaned.
|
||||
GENERATED_BINS += $(LDSCRIPT)
|
||||
endif
|
||||
|
||||
# Need a special rule to have a bin dir
|
||||
$(BUILD_DIR)/%.o: %.c
|
||||
@printf " CC\t$<\n"
|
||||
@mkdir -p $(dir $@)
|
||||
$(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
|
||||
|
||||
$(BUILD_DIR)/%.o: %.cxx
|
||||
@printf " CXX\t$<\n"
|
||||
@mkdir -p $(dir $@)
|
||||
$(Q)$(CXX) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
|
||||
|
||||
$(BUILD_DIR)/%.o: %.S
|
||||
@printf " AS\t$<\n"
|
||||
@mkdir -p $(dir $@)
|
||||
$(Q)$(CC) $(TGT_ASFLAGS) $(ASFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
|
||||
|
||||
$(PROJECT).elf: $(OBJS) $(LDSCRIPT) $(LIBDEPS)
|
||||
@printf " LD\t$@\n"
|
||||
$(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@
|
||||
|
||||
%.bin: %.elf
|
||||
@printf " OBJCOPY\t$@\n"
|
||||
$(Q)$(OBJCOPY) -O binary $< $@
|
||||
|
||||
%.lss: %.elf
|
||||
$(OBJDUMP) -h -S $< > $@
|
||||
|
||||
%.list: %.elf
|
||||
$(OBJDUMP) -S $< > $@
|
||||
|
||||
%.flash: %.elf
|
||||
@printf " FLASH\t$<\n"
|
||||
ifeq (,$(OOCD_FILE))
|
||||
$(Q)(echo "halt; program $(realpath $(*).elf) verify reset" | nc -4 localhost 4444 2>/dev/null) || \
|
||||
$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
|
||||
-f target/$(OOCD_TARGET).cfg \
|
||||
-c "program $(realpath $(*).elf) verify reset exit" \
|
||||
$(NULL)
|
||||
else
|
||||
$(Q)(echo "halt; program $(realpath $(*).elf) verify reset" | nc -4 localhost 4444 2>/dev/null) || \
|
||||
$(OOCD) -f $(OOCD_FILE) \
|
||||
-c "program $(realpath $(*).elf) verify reset exit" \
|
||||
$(NULL)
|
||||
endif
|
||||
|
||||
clean:
|
||||
rm -rf $(BUILD_DIR) $(GENERATED_BINS)
|
||||
|
||||
.PHONY: all clean flash
|
||||
-include $(OBJS:.o=.d)
|
||||
|
||||
Loading…
Add table
Reference in a new issue