Initial commit: basic infrastructure
This commit is contained in:
Thomas Kolb
commit
5aaef38965
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# Build results
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/bin
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/obj
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# Vim swap files
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.*.sw?
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# generated config HEX files
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utils/*.hex
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[submodule "fxplib"]
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path = fxplib
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url = https://github.com/cfr34k/fxplib.git
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[submodule "libopencm3"]
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path = libopencm3
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url = https://github.com/libopencm3/libopencm3.git
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@ -0,0 +1,180 @@
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# --- START OF CONFIG ---------------------------------------------------
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# Edit the following variables for your own needs
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# toolchain configuration
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PREFIX ?= arm-none-eabi-
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CC = $(PREFIX)gcc
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LD = $(PREFIX)gcc
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OBJCOPY = $(PREFIX)objcopy
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OBJDUMP = $(PREFIX)objdump
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GDB = $(PREFIX)gdb
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SIZE = $(PREFIX)size
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OOCD = openocd
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OOCD_CFG = ./oocd/tinyfancontrol.cfg
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TOOLCHAIN_DIR ?= /usr/arm-none-eabi
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OPENCM3_DIR ?= ./libopencm3
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# default build configuration
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# "make BUILD=release" does a release build
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BUILD:=debug
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# basic build flags configuration
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CFLAGS+=-Wall -std=c99 -pedantic -Wextra -Wimplicit-function-declaration \
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-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
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-Wundef -Wshadow \
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-fno-common -ffunction-sections -fdata-sections -mcpu=cortex-m0 -mthumb \
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-mfloat-abi=soft -MD -DSTM32L0
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LDFLAGS+=--static \
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-L$(OPENCM3_DIR)/lib \
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-nostartfiles -Wl,--gc-sections \
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-mthumb -mcpu=cortex-m0 -mthumb -mfloat-abi=soft
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# the LD script (RAM-only does not work because the code is too large)
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#LDFLAGS+=-Tldscripts/tinyfancontrol-$(BUILD).ld
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LDFLAGS+=-Tldscripts/tinyfancontrol-release.ld
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# Flags for libopencm3
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CFLAGS+=-I$(OPENCM3_DIR)/include
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LDFLAGS+=-L$(OPENCM3_DIR)/lib -lopencm3_stm32l0
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# Flags for fxplib
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CFLAGS+=-Ifxplib/include -DPOINTPOS=16
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LDFLAGS+=-Lfxplib/lib/$(BUILD) -lfxp_stm32l0
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# generic linking
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LDFLAGS+=-Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
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# build type specific flags
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CFLAGS_debug=-O0 -ggdb -DDEBUG
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LDFLAGS_debug=
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CFLAGS_release=-Os -ggdb
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LDFLAGS_release=
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# target configuration
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TARGET := tinyfancontrol
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VERSION := $(shell git describe --always)
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# source files for the project
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SOURCE := $(shell find src/ -name '*.c')
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INCLUDES := $(shell find src/ -name '*.h')
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# additional dependencies for build (proper targets must be specified by user)
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DEPS := build_libfxp
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# default target
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all: $(TARGET)
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# user-specific targets
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export CFLAGS
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export BUILD
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export PREFIX
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export POSTFIX = stm32l0
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build_libfxp:
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cd fxplib && $(MAKE)
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# --- END OF CONFIG -----------------------------------------------------
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OBJ1=$(patsubst %.c, %.o, $(SOURCE))
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OBJ=$(patsubst src/%, obj/$(BUILD)/%, $(OBJ1))
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VERSIONSTR="\"$(VERSION)\""
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CFLAGS+=-DVERSION=$(VERSIONSTR)
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TARGET_BASE := bin/$(BUILD)/$(TARGET)
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CFLAGS+=$(CFLAGS_$(BUILD))
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LDFLAGS+=$(LDFLAGS_$(BUILD))
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.PHONY show_cflags:
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@echo --- Build parameters: ------------------------------------------
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@echo CFLAGS\=$(CFLAGS)
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@echo LDFLAGS\=$(LDFLAGS)
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@echo SOURCE\=$(SOURCE)
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@echo -----------------------------------------------------------------
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$(TARGET): show_cflags $(TARGET_BASE).elf $(TARGET_BASE).hex \
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$(TARGET_BASE).lss $(TARGET_BASE).bin
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@$(SIZE) $(TARGET_BASE).elf
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@echo ">>> $(BUILD) build complete."
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$(TARGET_BASE).elf: $(DEPS) $(OBJ) $(INCLUDES) Makefile
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@echo Linking $@ ...
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@mkdir -p $(shell dirname $@)
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@$(LD) -o $(TARGET_BASE).elf $(OBJ) $(LDFLAGS)
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$(TARGET_BASE).hex: $(TARGET_BASE).elf
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@echo "Generating $@ ..."
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@$(OBJCOPY) -Oihex $< $@
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$(TARGET_BASE).bin: $(TARGET_BASE).elf
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@echo "Generating $@ ..."
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@$(OBJCOPY) -Obinary $< $@
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$(TARGET_BASE).lss: $(TARGET_BASE).elf
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@echo "Generating $@ ..."
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@$(OBJDUMP) -S $< > $@
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obj/$(BUILD)/%.o: src/%.c $(INCLUDES) Makefile
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@echo "Compiling $< ..."
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@mkdir -p $(shell dirname $@)
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@$(CC) -c $(CFLAGS) -o $@ $<
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clean:
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rm -f $(TARGET_BASE).elf
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rm -f $(TARGET_BASE).hex
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rm -f $(TARGET_BASE).lss
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rm -f $(TARGET_BASE).bin
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rm -f $(OBJ)
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program: program_jlink
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reset: reset_jlink
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/tmp/jlink_prog_script: Makefile
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echo "Device STM32F030C8" > $@
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echo "connect" >> $@
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echo "S" >> $@
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echo "4000" >> $@
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echo "loadfile $(TARGET_BASE).hex" >> $@
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echo "r" >> $@
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echo "g" >> $@
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echo "exit" >> $@
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/tmp/jlink_rst_script: Makefile
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echo "Device STM32F030C8" > $@
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echo "connect" >> $@
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echo "S" >> $@
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echo "4000" >> $@
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echo "r" >> $@
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echo "g" >> $@
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echo "exit" >> $@
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program_jlink: /tmp/jlink_prog_script $(TARGET_BASE).hex
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JLinkExe </tmp/jlink_prog_script
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reset_jlink: /tmp/jlink_rst_script
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JLinkExe </tmp/jlink_rst_script
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program_release: $(TARGET_BASE).hex
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$(OOCD) -f $(OOCD_CFG) \
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-c "init" \
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-c "reset halt" \
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-c "flash write_image erase $(TARGET_BASE).hex" \
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-c "resume 0x08000000" \
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-c "shutdown"
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program_debug: $(TARGET_BASE).hex
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$(OOCD) -f $(OOCD_CFG) \
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-c "init" \
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-c "reset halt" \
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-c "load_image $(TARGET_BASE).hex" \
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-c "resume `arm-none-eabi-readelf -h bin/debug/$(TARGET).elf | awk '/Entry/{print $$4;}'`" \
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-c "shutdown"
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debug: $(TARGET_BASE).hex
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JLinkGDBServerCLExe -device STM32F030K6 -if SWD
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Subproject commit 896464ee67bbbae82930c9c972e5267b97c7de6d
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/* Linker script for LNSC-2420: STM32F0K6T6*/
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/* This debug linker script places everything in RAM for fewer flash write
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* cycles */
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/* Define memory regions. */
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MEMORY
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{
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/*rom (rx) : ORIGIN = 0x08000000, LENGTH = 64K*/
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ram (rwx) : ORIGIN = 0x20000000, LENGTH = 8K
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}
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/* Include the common ld script. */
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/* INCLUDE libopencm3_stm32f4.ld */
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/* Generic linker script for STM32 targets using libopencm3. */
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/* Memory regions must be defined in the ld script which includes this one. */
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/* Enforce emmition of the vector table. */
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EXTERN (vector_table)
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/* Define the entry point of the output file. */
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ENTRY(reset_handler)
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/* Define sections. */
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SECTIONS
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{
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.text : {
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*(.vectors) /* Vector table */
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*(.text*) /* Program code */
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. = ALIGN(4);
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*(.rodata*) /* Read-only data */
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. = ALIGN(4);
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} >ram
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/* C++ Static constructors/destructors, also used for __attribute__
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* ((constructor)) and the likes */
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.preinit_array : {
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. = ALIGN(4);
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__preinit_array_start = .;
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KEEP (*(.preinit_array))
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__preinit_array_end = .;
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} >ram
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.init_array : {
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. = ALIGN(4);
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__init_array_start = .;
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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__init_array_end = .;
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} >ram
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.fini_array : {
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. = ALIGN(4);
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__fini_array_start = .;
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KEEP (*(.fini_array))
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KEEP (*(SORT(.fini_array.*)))
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__fini_array_end = .;
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} >ram
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/*
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* Another section used by C++ stuff, appears when using newlib with
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* 64bit (long long) printf support
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*/
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.ARM.extab : {
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*(.ARM.extab*)
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} >ram
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.ARM.exidx : {
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__exidx_start = .;
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*(.ARM.exidx*)
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__exidx_end = .;
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} >ram
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. = ALIGN(4);
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_etext = .;
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.data : {
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_data = .;
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*(.data*) /* Read-write initialized data */
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. = ALIGN(4);
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_edata = .;
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} >ram
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.bss : {
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*(.bss*) /* Read-write zero initialized data */
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*(COMMON)
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. = ALIGN(4);
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_ebss = .;
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} >ram
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/*
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* The .eh_frame section appears to be used for C++ exception handling.
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* You may need to fix this if you're using C++.
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*/
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/DISCARD/ : { *(.eh_frame) }
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. = ALIGN(4);
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end = .;
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}
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PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));
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/* Linker script for LNSC-2420: STM32F0K6T6*/
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/* Define memory regions. */
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MEMORY
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{
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rom (rx) : ORIGIN = 0x08000000, LENGTH = 64K
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ram (rwx) : ORIGIN = 0x20000000, LENGTH = 8K
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}
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/* Include the common ld script. */
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INCLUDE cortex-m-generic.ld
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Subproject commit 32a169207775d6c53c536d46b78ecf8eca3fdd18
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#include <libopencm3/stm32/rcc.h>
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#include <libopencm3/cm3/systick.h>
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#include <libopencmsis/core_cm3.h>
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/* Set up systick to fire freq times per second */
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static void init_systick(int freq)
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{
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systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
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/* clear counter so it starts right away */
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STK_CVR = 0;
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systick_set_reload(rcc_ahb_frequency / freq);
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systick_counter_enable();
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systick_interrupt_enable();
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}
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int main(void)
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{
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uint64_t timebase_ms = 0;
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init_systick(1000);
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//rs485_enqueue("LNSC-2420 v" VERSION " initialized.\n");
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// triggered every 1 ms
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while (1) {
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__WFI();
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}
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return 0;
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}
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/* Called when systick fires */
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void sys_tick_handler(void)
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{
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//wait_frame = 0;
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}
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void hard_fault_handler(void)
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{
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while (1);
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}
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