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C++ refactoring, plus low-power support, plus software-based SPI CS

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I'm backlogged.
This commit is contained in:
Max Regan
2019-04-13 15:08:02 -07:00
parent d5bfecedb2
commit 6747d6c831
54 changed files with 13193 additions and 7264 deletions
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40
Makefile
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@@ -24,13 +24,13 @@
# Tools
#
TOOL_PREFIX ?= arm-none-eabi-
TOOL_PREFIX ?= arm-eabi-
CC = $(TOOL_PREFIX)gcc
CXX = $(TOOL_PREFIX)g++
CPP = $(TOOL_PREFIX)cpp
AS = $(TOOL_PREFIX)as
LD = $(TOOL_PREFIX)gcc
OBJCOPY = $(TOOL_PREFIX)objcopy
STM32FLASH ?= stm32flash
#
# Device Variables
@@ -40,24 +40,30 @@ DEVICE_TYPE ?= stm32l031k6
DEVICE_FAMILY = stm32l031xx
DEVICE_LINE = stm32l0xx
#
# Filenames and paths
#
C_SOURCES := $(shell find $(SOURCEDIR) -name '*.c')
S_SOURCES := $(shell find $(SOURCEDIR) -name '*.s')
# Ignores dotfiles and other garbage some tools leave behind
define find_important
$(shell find $(1) -type f -and -name $(2) -and -not -iname "*~" -and -not -iname "*#*" -and -not \( -path "*.cquery_cached_index*" \) )
endef
C_SOURCES := $(call find_important, $(SOURCEDIR), '*.c')
CXX_SOURCES := $(call find_important, $(SOURCEDIR), '*.cpp')
S_SOURCES := $(call find_important, $(SOURCEDIR), '*.s')
SPP_SOURCES := $(DEVICE_TYPE).S
SOURCES = $(C_SOURCES) $(S_SOURCES) $(SPP_SOURCES)
SOURCES = $(C_SOURCES) $(S_SOURCES) $(SPP_SOURCES) $(CPP_SOURCES)
C_OBJS := $(patsubst %.c,%.o,$(C_SOURCES))
CXX_OBJS := $(patsubst %.cpp,%.o,$(CXX_SOURCES))
S_OBJS := $(patsubst %.s,%.o,$(S_SOURCES))
SPP_OBJS := $(patsubst %.S,%.o,$(SPP_SOURCES))
OBJS = $(C_OBJS) $(S_OBJS) $(SPP_OBJS)
OBJS = $(C_OBJS) $(S_OBJS) $(SPP_OBJS) $(CXX_OBJS)
LINKER_SCRIPT ?= $(DEVICE_TYPE).ld
OUTPUT_NAME ?= test
OUTPUT_NAME ?= watch
OUTPUT_BIN ?= $(OUTPUT_NAME).bin
OUTPUT_ELF ?= $(OUTPUT_NAME).elf
@@ -70,7 +76,8 @@ DEVICE_DEFINE = $(subst XX,xx,$(shell echo $(DEVICE_FAMILY) | tr '[:lower:]' '[:
# C pedantism
CFLAGS = -Wall -Wextra -Wpedantic
# Debug/optimization
CFLAGS += -Og -ggdb
CFLAGS += -ggdb -g3
CFLAGS += -fdata-sections -ffunction-sections
# Architecture
CFLAGS += -mthumb -mcpu=cortex-m0plus
CFLAGS += -ffreestanding
@@ -81,11 +88,15 @@ CFLAGS += -I./lib/stm32/$(DEVICE_LINE)/Include
CFLAGS += -I./lib/CMSIS/Core/Include
CFLAGS += -I./lib/fonts/
CXX_FLAGS = -std=c++14 -fno-exceptions -fno-rtti
# Startup Definitions
ASFLAGS += -D__STARTUP_CLEAR_BSS
ASFLAGS += -D__HEAP_SIZE=0 # No heap- let the linker decide it all
LDFLAGS += -nostdinc -lc -lnosys -Wl,--gc-sections -Wl,--print-memory-usage
LDFLAGS += -lc -lstdc++ -nostdinc -lnosys -Wl,--gc-sections -Wl,--build-id=None
LDFLAGS += -Wl,--wrap=malloc -Wl,--wrap=free # Fail to compile if dynamic allocation is sneaking through
LDFLAGS += -mthumb -mcpu=cortex-m0plus
#
# Default Target
@@ -105,13 +116,17 @@ build: $(OUTPUT_BIN)
@echo "AS $@"
@$(CC) $(ASFLAGS) -c $< -o $@
%.o: %.cpp
@echo "CXX $@"
@$(CXX) $(CXX_FLAGS) $(CFLAGS) -c $< -o $@
$(OUTPUT_BIN): $(OUTPUT_ELF)
@echo "OBJCOPY $@"
@$(OBJCOPY) -O binary $(OUTPUT_ELF) $(OUTPUT_BIN)
$(OUTPUT_ELF): $(LINKER_SCRIPT) $(OBJS)
@echo "LD $@"
$(LD) $(LDFLAGS) -T $(LINKER_SCRIPT) -o $(OUTPUT_ELF) $(OBJS)
@$(LD) $(LDFLAGS) -T $(LINKER_SCRIPT) -o $(OUTPUT_ELF) $(OBJS)
#
# Utilities
@@ -122,8 +137,7 @@ STM32FLASH_DEVICE = /dev/ttyUSB0
.PHONY: flash
flash: $(OUTPUT_BIN)
@echo "FLASH $(OUTPUT_BIN)"
@st-flash write $(OUTPUT_BIN) 0x8000000 2> /dev/null
# stm32flash -w $(OUTPUT_BIN) $(STM32FLASH_DEVICE)
@st-flash write $(OUTPUT_BIN) 0x8000000
.PHONY: clean