first commit
vertical line at about 1/3 of the horizontal line
This commit is contained in:
commit
b7004a0171
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build/
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datasheet/
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output/
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# Name of the project
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PROJ_NAME = video
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## Directories ##
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# This is where the source files are located,
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# which are not in the current directory
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SRC_DIR = ./src
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# The header files we use are located here
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INC_DIR = ./inc
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INC_DIR += ./src
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INC_DIR += .
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BUILD_DIR = build
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OUTPUT_DIR = output
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######################################################################
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# SOURCES #
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######################################################################
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## FILES ##
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# c files
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# SRCS =
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SRCS += main.c
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# asm files
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# S maiuscola! Invoca prima il compilatore gcc che interpreta macro e altro
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# ASRC = main.S
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ASRC += main.S
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#ASRC += video.S
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#ASRC += sleep.S
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# ASRC += variables.S
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#ASRC += lines/line_white.S
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#ASRC += lines/line_black.S
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#ASRC += lines/line_mid.S
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#ASRC += lines/line_syncs.S
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#ASRC += lines/line_calc.S
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# ASRC += lines/line_digits.S
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# header files
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# Specify here libraries! Makefile will check existance before launching
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# DEPS = $(notdir $(wildcard $(INC_DIR)/*.h))
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# DEPS += Makefile
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# DEPS += $(ENUMSTRING)
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# Object files
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# Automatically declares object file names
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OBJS = $(patsubst %.c, $(BUILD_DIR)/%.c.o, $(filter %.c,$(SRCS)) )
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OBJS += $(patsubst %.cpp, $(BUILD_DIR)/%.cpp.o,$(filter %.cpp,$(SRCS)) )
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# Dependencies from .h/.hpp files, but exclude asm files
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DEPS := $(patsubst %.o, %.d, $(OBJS))
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OBJS += $(patsubst %.s, $(BUILD_DIR)/%.s.o, $(filter %.s,$(ASRC)) )
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OBJS += $(patsubst %.S, $(BUILD_DIR)/%.S.o, $(filter %.S,$(ASRC)) )
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# Virtual Paths
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# Tell make to look in that folder if it cannot find a source
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# in the current directory
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vpath %.c $(SRC_DIR)
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vpath %.cpp $(SRC_DIR)
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vpath %.S $(SRC_DIR)
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vpath %.h $(INC_DIR)
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######################################################################
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# SETUP TOOLS #
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######################################################################
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ECHO := /bin/echo
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# GCC/programming Tools
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CC = avr-gcc
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CXX = avr-g++
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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GDB = avr-gdb
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AS = avr-as
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SIZE = avr-size
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AVRDUDE = avrdude
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# Custom script for enum parsing
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# PACK2STRING = python3 bin/enum2string.py
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# Microcontroller
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MCU = atmega328p
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F_CPU = 16000000
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# Fuses -- www.engbedded.com/fusecalc/
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LFUSE = 0xfd
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HFUSE = 0xde
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### GCC options ###
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## Compiler flags ##
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# Do not run the linker
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CFLAGS += -c
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# Debug informations
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CFLAGS += -g
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# Auto optimisation
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CFLAGS += -Os
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# All warning messages
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CFLAGS += -Wall -Wextra
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# Puts functions and data into its own section - remove thread-safe things
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CFLAGS += -fno-exceptions -fstack-usage -fdump-tree-optimized -ffunction-sections -fdata-sections -fno-threadsafe-statics
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# Use smallest size for enums
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CFLAGS += -fshort-enums
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# Microcontroller
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CFLAGS += -mmcu=$(MCU)
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# Clock speed
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CFLAGS += -DF_CPU=$(F_CPU)L
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# Header files
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CFLAGS += $(addprefix -I,$(INC_DIR))
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CFLAGS += -flto
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# CFLAGS += -DAVR
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# Debug Flag
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# CFLAGS += -DDEBUG
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## CXX flags are the same as CC ones here!
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CXXFLAGS = $(CFLAGS)
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CXXFLAGS += -std=c++11
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# Linker flags
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LFLAGS = -mmcu=$(MCU)
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LFLAGS += $(addprefix -I,$(INC_DIR))
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######################################################################
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# PROGRAMMING TOOLS #
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######################################################################
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# To match MCU with BOARD, see link
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# http://www.nongnu.org/avr-libc/user-manual/using_tools.html
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#PROGRAMMER = avrispmkii
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PROGRAMMER = usbasp
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# verbose
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# PROGRAM_FLAGS = -v
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# erase
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# PROGRAM_FLAGS = -e
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# choose programmer
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PROGRAM_FLAGS += -c $(PROGRAMMER)
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# target cpu
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PROGRAM_FLAGS += -p $(MCU)
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# USB port and baudrate
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# PROGRAM_FLAGS += -P /dev/ttyACM0
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######################################################################
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# TARGETS #
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######################################################################
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.PHONY: clean
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all: $(OUTPUT_DIR)/$(PROJ_NAME).hex
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-include $(DEPS)
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# invokes CC compiler before assemblying
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$(BUILD_DIR)/%.S.o : %.S
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@echo -e "\033[1;33m[Assembling ]\033[0m AS $<"
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@mkdir -p `dirname $@`
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$(CC) $(CFLAGS) $< -o $@
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# pure asm
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$(BUILD_DIR)/%.s.o : %.s
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@echo -e "\033[1;33m[Assembling ]\033[0m AS $<"
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@mkdir -p `dirname $@`
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$(CC) $(CFLAGS) $< -o $@
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# .cxx files
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$(BUILD_DIR)/%.cpp.o: %.cpp
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@echo -e "\033[1;33m[Compiling ]\033[0m CX $<"
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@mkdir -p `dirname $@`
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$(CXX) $(CXXFLAGS) $< -o $@
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# .c files
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$(BUILD_DIR)/%.c.o: %.c
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@echo -e "\033[1;33m[Compiling ]\033[0m CC $<"
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@mkdir -p `dirname $@`
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$(CC) $(CFLAGS) $< -o $@
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.DELETE_ON_ERROR:
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$(BUILD_DIR)/%.c.d: %.c
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@mkdir -p `dirname $@`
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@$(ECHO) -n "$@ " > $@
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@$(CC) -MM -MT '$(@D)/$(<F).o' $(CFLAGS) $< >> $@
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.DELETE_ON_ERROR:
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$(BUILD_DIR)/%.cpp.d: %.cpp
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@mkdir -p `dirname $@`
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@$(ECHO) -n "$@ " > $@
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@$(CC) -MM -MT '$(@D)/$(<F).o' $(CFLAGS) $< >> $@
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# $(ENUMSTRING): $(STRINGFILES)
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# $(PACK2STRING) $^ > $(ENUMSTRING)
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$(OUTPUT_DIR)/$(PROJ_NAME).elf: $(OBJS)
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@echo -e "\033[1;34m[Linking ]\033[0m $@"
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@mkdir -p ${OUTPUT_DIR}
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$(CC) $(LFLAGS) -o $@ $(foreach file, $^, $(file)) -lm
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@echo -e "\033[1;35m[Disasm... ]\033[0m $^"
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$(OBJDUMP) -h -S $@ > $(OUTPUT_DIR)/$(PROJ_NAME).lss
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$(OUTPUT_DIR)/$(PROJ_NAME).hex: $(OUTPUT_DIR)/$(PROJ_NAME).elf
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@echo -e "\033[1;36m[Binary ]\033[0m $^"
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$(OBJCOPY) -O ihex -R .eeprom $^ $@
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size: $(OUTPUT_DIR)/$(PROJ_NAME).elf
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$(SIZE) -C --mcu=$(MCU) $(OUTPUT_DIR)/$(PROJ_NAME).elf
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flash: $(OUTPUT_DIR)/$(PROJ_NAME).hex
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$(AVRDUDE) $(PROGRAM_FLAGS) -U flash:w:$(OUTPUT_DIR)/$(PROJ_NAME).hex
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fuse: $(OUTPUT_DIR)/$(PROJ_NAME).hex
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$(AVRDUDE) $(PROGRAM_FLAGS) -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m
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test:
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$(AVRDUDE) $(PROGRAM_FLAGS)
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clean:
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@echo -e "\033[1;33m[Cleaning ]\033[0m"
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@rm -rf $(BUILD_DIR)/*
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@rm -rf $(OUTPUT_DIR)/*
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@ -0,0 +1,89 @@
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#include <avr/io.h>
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#include "macro.h"
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.data
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status:
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.byte 0x0
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.text
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.global main_s
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main_s:
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ldi r16, 0x30
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sts DDRB, r16
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ldi r16, (1 << IVCE) ; set vector at address 0x0
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ldi r17, 0
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out IO(MCUCR), r16
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out IO(MCUCR), r17
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ldi r16, 0x3 ; enable falling edge interrupt 0
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sts EICRA, r16
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ldi r16, 0x1 ; external interrupt mask enable
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sts EIMSK, r16
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sei
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again:
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sbi IO(PORTB), 5
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ldi r16, 0x1
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sts status, r16
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wait1:
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ldi r16, 0xff
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ldi r17, 0xff
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ldi r18, 0xff
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1:
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dec r16
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brne 1b
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dec r17
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brne 1b
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dec r18
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brne 1b
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cbi IO(PORTB), 5
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ldi r16, 0x0
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sts status, r16
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wait2:
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ldi r16, 0xff
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ldi r17, 0xff
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ldi r18, 0xff
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1:
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dec r16
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brne 1b
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dec r17
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brne 1b
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dec r18
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brne 1b
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jmp again
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.global int0_handler
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int0_handler:
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ldi r31, 80
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loop:
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dec r31
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brne loop
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lds r31, status
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cpi r31, 1
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brne 1f
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sbi IO(PORTB), 4
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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cbi IO(PORTB), 4
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1:
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ret
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