moved new servo display code accordingly
This commit is contained in:
Lucas Pleß
parent
ee549b25f3
commit
ed8753a873
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@ -0,0 +1,276 @@
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# On command line:
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#
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# make all = Make software.
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#
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# make clean = Clean out built project files.
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#
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# make program = Download the hex file to the device, using avrdude. Please
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# customize the avrdude settings below first!
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#
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# To rebuild project do "make clean" then "make all".
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#
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MCU = atmega32
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F_CPU = 8000000
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# Output format. (can be srec, ihex, binary)
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FORMAT = ihex
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# Target file name (without extension).
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TARGET = main
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SRC = src/$(TARGET).c src/utils.c src/uart.c
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# Optimization level, can be [0, 1, 2, 3, s].
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# 0 = turn off optimization. s = optimize for size.
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# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
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OPT = s
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# List any extra directories to look for include files here.
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# Each directory must be seperated by a space.
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EXTRAINCDIRS = src/
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# Compiler flag to set the C Standard level.
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# c89 - "ANSI" C
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# gnu89 - c89 plus GCC extensions
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# c99 - ISO C99 standard (not yet fully implemented)
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# gnu99 - c99 plus GCC extensions
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CSTANDARD = -std=gnu99
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# Place -D or -U options here
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CDEFS =
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# Place -I options here
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CINCS =
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# Compiler flags.
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# -O*: optimization level
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# -f...: tuning, see GCC manual and avr-libc documentation
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# -Wall...: warning level
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# -Wa,...: tell GCC to pass this to the assembler.
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# -adhlns...: create assembler listing
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CFLAGS += $(CDEFS) $(CINCS)
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CFLAGS += -O$(OPT)
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CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
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CFLAGS += -Wall -Wstrict-prototypes
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CFLAGS += -Wa,-adhlns=$(<:.c=.lst)
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CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
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CFLAGS += $(CSTANDARD)
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CFLAGS += -DF_CPU=$(F_CPU) #-DDEBUG
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# External memory options
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# Linker flags.
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# -Wl,...: tell GCC to pass this to linker.
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# -Map: create map file
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# --cref: add cross reference to map file
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LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
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# Programming support using avrdude. Settings and variables.
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AVRDUDE_PROGRAMMER = usbasp
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AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
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#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
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AVRDUDE_FLAGS = -p $(MCU) -c $(AVRDUDE_PROGRAMMER)
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# ---------------------------------------------------------------------------
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# Define programs and commands.
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SHELL = sh
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CC = avr-gcc
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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SIZE = avr-size
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NM = avr-nm
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AVRDUDE = avrdude
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REMOVE = rm -f
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COPY = cp
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# Define Messages
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# English
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MSG_ERRORS_NONE = Errors: none
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MSG_BEGIN = -------- begin --------
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MSG_END = -------- end --------
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MSG_SIZE_BEFORE = Size before:
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MSG_SIZE_AFTER = Size after:
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MSG_COFF = Converting to AVR COFF:
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MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
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MSG_FLASH = Creating load file for Flash:
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MSG_EEPROM = Creating load file for EEPROM:
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MSG_EXTENDED_LISTING = Creating Extended Listing:
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MSG_SYMBOL_TABLE = Creating Symbol Table:
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MSG_LINKING = Linking:
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MSG_COMPILING = Compiling:
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MSG_ASSEMBLING = Assembling:
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MSG_CLEANING = Cleaning project:
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# Define all object files.
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OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)
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# Define all listing files.
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LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)
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# Compiler flags to generate dependency files.
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### GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-MF,.dep/$(@F).d
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GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d
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# Combine all necessary flags and optional flags.
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# Add target processor to flags.
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ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)
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# Default target.
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all: begin gccversion sizebefore build sizeafter finished end
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build: elf hex eep lss sym
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elf: $(TARGET).elf
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hex: $(TARGET).hex
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eep: $(TARGET).eep
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lss: $(TARGET).lss
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sym: $(TARGET).sym
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# Eye candy.
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# AVR Studio 3.x does not check make's exit code but relies on
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# the following magic strings to be generated by the compile job.
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begin:
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@echo
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@echo $(MSG_BEGIN)
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finished:
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@echo $(MSG_ERRORS_NONE)
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end:
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@echo $(MSG_END)
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@echo
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# Display size of file.
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HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
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ELFSIZE = $(SIZE) -A $(TARGET).elf
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sizebefore:
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@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi
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sizeafter:
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@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi
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# Display compiler version information.
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gccversion :
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@$(CC) --version
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# Program the device.
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program: $(TARGET).hex $(TARGET).eep
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$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
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# Create final output files (.hex, .eep) from ELF output file.
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%.hex: %.elf
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@echo
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@echo $(MSG_FLASH) $@
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$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
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%.eep: %.elf
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@echo
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@echo $(MSG_EEPROM) $@
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-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
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--change-section-lma .eeprom=0 -O $(FORMAT) $< $@
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# Create extended listing file from ELF output file.
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%.lss: %.elf
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@echo
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@echo $(MSG_EXTENDED_LISTING) $@
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$(OBJDUMP) -h -S $< > $@
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# Create a symbol table from ELF output file.
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%.sym: %.elf
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@echo
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@echo $(MSG_SYMBOL_TABLE) $@
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$(NM) -n $< > $@
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# Link: create ELF output file from object files.
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.SECONDARY : $(TARGET).elf
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.PRECIOUS : $(OBJ)
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%.elf: $(OBJ)
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@echo
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@echo $(MSG_LINKING) $@
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$(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)
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# Compile: create object files from C source files.
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%.o : %.c
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@echo
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@echo $(MSG_COMPILING) $<
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$(CC) -c $(ALL_CFLAGS) $< -o $@
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# Compile: create assembler files from C source files.
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%.s : %.c
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$(CC) -S $(ALL_CFLAGS) $< -o $@
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# Assemble: create object files from assembler source files.
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%.o : %.S
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@echo
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@echo $(MSG_ASSEMBLING) $<
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$(CC) -c $(ALL_ASFLAGS) $< -o $@
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# Target: clean project.
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clean: begin clean_list finished end
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clean_list :
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@echo
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@echo $(MSG_CLEANING)
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$(REMOVE) $(TARGET).hex
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$(REMOVE) $(TARGET).eep
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$(REMOVE) $(TARGET).obj
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$(REMOVE) $(TARGET).cof
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$(REMOVE) $(TARGET).elf
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$(REMOVE) $(TARGET).map
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$(REMOVE) $(TARGET).obj
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$(REMOVE) $(TARGET).a90
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$(REMOVE) $(TARGET).sym
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$(REMOVE) $(TARGET).lnk
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$(REMOVE) $(TARGET).lss
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$(REMOVE) $(OBJ)
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$(REMOVE) $(LST)
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$(REMOVE) $(SRC:.c=.s)
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$(REMOVE) $(SRC:.c=.d)
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$(REMOVE) .dep/*
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# Include the dependency files.
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-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
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# Listing of phony targets.
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.PHONY : all begin finish end sizebefore sizeafter gccversion \
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build elf hex eep lss sym coff extcoff \
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clean clean_list program
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@ -0,0 +1,12 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<module type="C++" version="4">
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
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</content>
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<orderEntry type="jdk" jdkName="Cpp SDK" jdkType="CppSdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>
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Binary file not shown.
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@ -0,0 +1,254 @@
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#include <stdlib.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <avr/pgmspace.h>
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#include <util/delay.h>
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#include <string.h>
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#include "utils.h"
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#include "main.h"
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#include "uart.h"
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#define BUFSIZE 40
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#define CURRENT_MAX 30000 // 30 Ampere is max
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volatile uint16_t syscounter = 0;
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volatile uint8_t digitbuffer[6] = { 0,0,0,0,0,0 };
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volatile uint8_t leddigitbuffer[4] = { 0,0,0,0 };
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uint8_t digit = 0;
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uint8_t leddigit = 0;
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// values send over uart from powerboard
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uint16_t voltage = 0;
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int16_t current_in = 0;
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int16_t current_out = 0;
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uint8_t dumpsw = 0; //TODO: make bitfield
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uint8_t loadsw = 0; //TODO: make bitfield
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uint8_t gensw = 0; //TODO: make bitfield
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uint16_t display = 0;
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uint16_t power_gen = 0;
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uint16_t power_load = 0;
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unsigned char data_count = 0;
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unsigned char data_in[BUFSIZE];
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char command_in[BUFSIZE];
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const uint8_t segment_translate[10] = {
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63, 6, 91, 79, 102, 109, 125, 7, 127, 111
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};
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const uint8_t smallbar_translate[9] = {
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0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff
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};
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const uint8_t bigbar_translate[15][2] = {
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{ 0x00, 0xc0},
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{ 0x00, 0x60},
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{ 0x00, 0x30},
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{ 0x00, 0x18},
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{ 0x00, 0x0c},
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{ 0x00, 0x06},
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{ 0x00, 0x03},
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{ 0x01, 0x01},
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{ 0x03, 0x00},
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{ 0x06, 0x00},
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{ 0x0c, 0x00},
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{ 0x18, 0x00},
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{ 0x30, 0x00},
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{ 0x60, 0x00},
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{ 0xc0, 0x00}
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};
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//static void timer_init(void) {
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// clock is 8MHz
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//TCCR1B |= _BV(WGM12) | _BV(CS11) | _BV(CS10) ; // CTC Mode for Timer 1 (16Bit) with prescale of 64
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//OCR1A = 250; // 500Hz
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//TIMSK = _BV(OCIE1A);
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//sei(); // enable interrupts
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//}
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// Timer init
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ISR( TIMER1_COMPA_vect ) // Interruptbehandlungsroutine
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{
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OCR1A = 2500-OCR1A; // Das Servosignal wird aus der Differenz von
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// Periodenlänge (2500*0,008ms=20ms) und letztem
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// Vergleichswert (OCR1A) gebildet
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}
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static void ports_init(void) {
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// make column / digit driver pins to output
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DDRB = 0b11111100;
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PORTB = (1<<PB1) | (1<<PB0); // Pullup für PB0 und PB1
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TCCR1A = (1<<COM1A0); // Togglen bei Compare Match
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TCCR1B = (1<<WGM12) | (1<<CS11); // CTC-Mode; Prescaler 8
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TIMSK = (1<<OCIE1A); // Timer-Compare Interrupt an
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// make data ports to output
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}
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void process_command() {
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if(strstr(command_in,"A") != NULL) {
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// we have an A and B (from check in work_uart()
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// so our message should be complete and consist of:
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// A$voltage,$current_in,$current_out,$power_in,$power_out,loadsw,dumpsw,gensw\n
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//A12.5,65464,00000,00000,00000,1,0,1B
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char *token;
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uint8_t tokencounter = 0;
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char *start = strrchr(command_in, 'A');
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// remove first (B is ignored by atoi)
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start++;
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token = strtok(start, ",");
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while( token ) {
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switch(tokencounter) {
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case 0:
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|
voltage = atoi(token);
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
current_in = atoi(token);
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
current_out = atoi(token);
|
||||||
|
break;
|
||||||
|
case 3:
|
||||||
|
power_gen = atoi(token);
|
||||||
|
break;
|
||||||
|
case 4:
|
||||||
|
power_load = atoi(token);
|
||||||
|
break;
|
||||||
|
case 5:
|
||||||
|
if(atoi(token) == 1) loadsw = 1;
|
||||||
|
else loadsw = 0;
|
||||||
|
break;
|
||||||
|
case 6:
|
||||||
|
if(atoi(token) == 1) dumpsw = 1;
|
||||||
|
else dumpsw = 0;
|
||||||
|
break;
|
||||||
|
case 7:
|
||||||
|
if(atoi(token) == 1) gensw = 1;
|
||||||
|
else gensw = 0;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
tokencounter++;
|
||||||
|
token = strtok(NULL, ",");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void work_uart(){
|
||||||
|
unsigned int c = uart_getc();
|
||||||
|
}
|
||||||
|
|
||||||
|
if ( !(c & UART_NO_DATA) ) {
|
||||||
|
data_in[data_count] = c;
|
||||||
|
|
||||||
|
if (data_in[data_count] == 'B') {
|
||||||
|
data_count = 0;
|
||||||
|
|
||||||
|
memcpy(command_in, data_in, BUFSIZE);
|
||||||
|
memset(data_in, 0, BUFSIZE);
|
||||||
|
|
||||||
|
process_command();
|
||||||
|
} else {
|
||||||
|
data_count++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
static void set_servo(uint16_t value){
|
||||||
|
|
||||||
|
/// magic need to happen hear
|
||||||
|
display = value;
|
||||||
|
/// magic end
|
||||||
|
OCR1A = display;
|
||||||
|
sei();
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static void demo_display(void) {
|
||||||
|
|
||||||
|
for(uint8_t i = 0; i< 16;i++) {
|
||||||
|
leddigitbuffer[0] = bigbar_translate[i][0];
|
||||||
|
leddigitbuffer[1] = bigbar_translate[i][1];
|
||||||
|
wait(5);
|
||||||
|
}
|
||||||
|
|
||||||
|
for(uint8_t i = 0; i< 9;i++) {
|
||||||
|
leddigitbuffer[2] = smallbar_translate[i];
|
||||||
|
wait(5);
|
||||||
|
}
|
||||||
|
|
||||||
|
for(uint8_t i = 0; i< 9;i++) {
|
||||||
|
leddigitbuffer[3] = smallbar_translate[i];
|
||||||
|
wait(5);
|
||||||
|
}
|
||||||
|
|
||||||
|
for(uint8_t j = 0; j< 3;j++) {
|
||||||
|
for(uint8_t i = 0; i< 6; i++) {
|
||||||
|
digitbuffer[i] = 0xff;
|
||||||
|
}
|
||||||
|
wait(20);
|
||||||
|
for(uint8_t i = 0; i< 6; i++) {
|
||||||
|
digitbuffer[i] = 0x00;
|
||||||
|
}
|
||||||
|
wait(20);
|
||||||
|
}
|
||||||
|
|
||||||
|
for(uint8_t i = 0; i< 3;i++) {
|
||||||
|
leddigitbuffer[i] = 0x00;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
int main(void) {
|
||||||
|
ports_init();
|
||||||
|
timer_init();
|
||||||
|
uart_init(UART_BAUD_SELECT(19200,F_CPU));
|
||||||
|
memset(data_in, 0, BUFSIZE);
|
||||||
|
|
||||||
|
|
||||||
|
demo_display();
|
||||||
|
|
||||||
|
while(1) {
|
||||||
|
|
||||||
|
work_uart();
|
||||||
|
|
||||||
|
if(syscounter >= 100) {
|
||||||
|
uart_putc('a'); // send a to receive values
|
||||||
|
set_servo(power_gen)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
syscounter = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
// system timer
|
||||||
|
SIGNAL(TIMER1_COMPA_vect) {
|
||||||
|
syscounter++;
|
||||||
|
|
||||||
|
// output to sevensegment and leds
|
||||||
|
// make this here to reduce display flicker
|
||||||
|
digit++;
|
||||||
|
if(digit >5) digit = 0;
|
||||||
|
leddigit++;
|
||||||
|
if(leddigit >3) leddigit = 0;
|
||||||
|
|
||||||
|
SEVENSEG_PORT = digitbuffer[digit];
|
||||||
|
SEVENSEGDIG_PORT = _BV(digit+DIG0);
|
||||||
|
|
||||||
|
LED_PORT = leddigitbuffer[leddigit];
|
||||||
|
LEDDIG_PORT = _BV(leddigit);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -0,0 +1,29 @@
|
||||||
|
#ifndef _main_h
|
||||||
|
#define _main_h
|
||||||
|
|
||||||
|
#define SEVENSEG_PORT PORTA
|
||||||
|
#define SEVENSEG_DDR DDRA
|
||||||
|
|
||||||
|
#define LED_PORT PORTC
|
||||||
|
#define LED_DDR DDRC
|
||||||
|
|
||||||
|
#define DIG0 PD2
|
||||||
|
#define DIG1 PD3
|
||||||
|
#define DIG2 PD4
|
||||||
|
#define DIG3 PD5
|
||||||
|
#define DIG4 PD6
|
||||||
|
#define DIG5 PD7
|
||||||
|
#define LEDS_MID1 PB0
|
||||||
|
#define LEDS_MID2 PB1
|
||||||
|
#define LEDS_LOAD PB2
|
||||||
|
#define LEDS_GEN PB3
|
||||||
|
|
||||||
|
#define SEVENSEGDIG_PORT PORTD
|
||||||
|
#define SEVENSEGDIG_DDR DDRD
|
||||||
|
|
||||||
|
#define LEDDIG_PORT PORTB
|
||||||
|
#define LEDDIG_DDR DDRB
|
||||||
|
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
@ -0,0 +1,479 @@
|
||||||
|
/*************************************************************************
|
||||||
|
Title: Interrupt UART library with receive/transmit circular buffers
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: uart.c,v 1.10 2013/06/02 07:27:04 peter Exp $
|
||||||
|
Software: AVR-GCC 4.1, AVR Libc 1.4.6 or higher
|
||||||
|
Hardware: any AVR with built-in UART,
|
||||||
|
License: GNU General Public License
|
||||||
|
|
||||||
|
DESCRIPTION:
|
||||||
|
An interrupt is generated when the UART has finished transmitting or
|
||||||
|
receiving a byte. The interrupt handling routines use circular buffers
|
||||||
|
for buffering received and transmitted data.
|
||||||
|
|
||||||
|
The UART_RX_BUFFER_SIZE and UART_TX_BUFFER_SIZE variables define
|
||||||
|
the buffer size in bytes. Note that these variables must be a
|
||||||
|
power of 2.
|
||||||
|
|
||||||
|
USAGE:
|
||||||
|
Refere to the header file uart.h for a description of the routines.
|
||||||
|
See also example test_uart.c.
|
||||||
|
|
||||||
|
NOTES:
|
||||||
|
Based on Atmel Application Note AVR306
|
||||||
|
|
||||||
|
LICENSE:
|
||||||
|
Copyright (C) 2006 Peter Fleury
|
||||||
|
|
||||||
|
This program is free software; you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation; either version 2 of the License, or
|
||||||
|
any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
*************************************************************************/
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <avr/interrupt.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
#include "uart.h"
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* constants and macros
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* size of RX/TX buffers */
|
||||||
|
#define UART_RX_BUFFER_MASK ( UART_RX_BUFFER_SIZE - 1)
|
||||||
|
#define UART_TX_BUFFER_MASK ( UART_TX_BUFFER_SIZE - 1)
|
||||||
|
|
||||||
|
#if ( UART_RX_BUFFER_SIZE & UART_RX_BUFFER_MASK )
|
||||||
|
#error RX buffer size is not a power of 2
|
||||||
|
#endif
|
||||||
|
#if ( UART_TX_BUFFER_SIZE & UART_TX_BUFFER_MASK )
|
||||||
|
#error TX buffer size is not a power of 2
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined(__AVR_AT90S2313__) \
|
||||||
|
|| defined(__AVR_AT90S4414__) || defined(__AVR_AT90S4434__) \
|
||||||
|
|| defined(__AVR_AT90S8515__) || defined(__AVR_AT90S8535__) \
|
||||||
|
|| defined(__AVR_ATmega103__)
|
||||||
|
/* old AVR classic or ATmega103 with one UART */
|
||||||
|
#define AT90_UART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT UART_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect
|
||||||
|
#define UART0_STATUS USR
|
||||||
|
#define UART0_CONTROL UCR
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_AT90S2333__) || defined(__AVR_AT90S4433__)
|
||||||
|
/* old AVR classic with one UART */
|
||||||
|
#define AT90_UART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT UART_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega8__) || defined(__AVR_ATmega16__) || defined(__AVR_ATmega32__) \
|
||||||
|
|| defined(__AVR_ATmega323__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART_RXC_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined (__AVR_ATmega8515__) || defined(__AVR_ATmega8535__)
|
||||||
|
#define ATMEGA_USART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega163__)
|
||||||
|
/* ATmega163 with one UART */
|
||||||
|
#define ATMEGA_UART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT UART_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega162__)
|
||||||
|
/* ATmega with two USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define ATMEGA_USART1
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART0_RXC_vect
|
||||||
|
#define UART1_RECEIVE_INTERRUPT USART1_RXC_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect
|
||||||
|
#define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#define UART1_STATUS UCSR1A
|
||||||
|
#define UART1_CONTROL UCSR1B
|
||||||
|
#define UART1_DATA UDR1
|
||||||
|
#define UART1_UDRIE UDRIE1
|
||||||
|
#elif defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__)
|
||||||
|
/* ATmega with two USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define ATMEGA_USART1
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART0_RX_vect
|
||||||
|
#define UART1_RECEIVE_INTERRUPT USART1_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect
|
||||||
|
#define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#define UART1_STATUS UCSR1A
|
||||||
|
#define UART1_CONTROL UCSR1B
|
||||||
|
#define UART1_DATA UDR1
|
||||||
|
#define UART1_UDRIE UDRIE1
|
||||||
|
#elif defined(__AVR_ATmega161__)
|
||||||
|
/* ATmega with UART */
|
||||||
|
#error "AVR ATmega161 currently not supported by this libaray !"
|
||||||
|
#elif defined(__AVR_ATmega169__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART0_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega48__) || defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__) || defined(__AVR_ATmega48P__) || defined(__AVR_ATmega88P__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__) \
|
||||||
|
|| defined(__AVR_ATmega3250__) || defined(__AVR_ATmega3290__) ||defined(__AVR_ATmega6450__) || defined(__AVR_ATmega6490__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#elif defined(__AVR_ATtiny2313__)
|
||||||
|
#define ATMEGA_USART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega329__) || \
|
||||||
|
defined(__AVR_ATmega649__) || \
|
||||||
|
defined(__AVR_ATmega325__) || \
|
||||||
|
defined(__AVR_ATmega645__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART0_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#elif defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega1281__) || defined(__AVR_ATmega640__)
|
||||||
|
/* ATmega with two USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define ATMEGA_USART1
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART0_RX_vect
|
||||||
|
#define UART1_RECEIVE_INTERRUPT USART1_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect
|
||||||
|
#define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#define UART1_STATUS UCSR1A
|
||||||
|
#define UART1_CONTROL UCSR1B
|
||||||
|
#define UART1_DATA UDR1
|
||||||
|
#define UART1_UDRIE UDRIE1
|
||||||
|
#elif defined(__AVR_ATmega644__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART0_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#elif defined(__AVR_ATmega164P__) || defined(__AVR_ATmega324P__) || defined(__AVR_ATmega644P__)
|
||||||
|
/* ATmega with two USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define ATMEGA_USART1
|
||||||
|
#define UART0_RECEIVE_INTERRUPT USART0_RX_vect
|
||||||
|
#define UART1_RECEIVE_INTERRUPT USART1_RX_vect
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect
|
||||||
|
#define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#define UART1_STATUS UCSR1A
|
||||||
|
#define UART1_CONTROL UCSR1B
|
||||||
|
#define UART1_DATA UDR1
|
||||||
|
#define UART1_UDRIE UDRIE1
|
||||||
|
#else
|
||||||
|
#error "no UART definition for MCU available"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* module global variables
|
||||||
|
*/
|
||||||
|
static volatile unsigned char UART_TxBuf[UART_TX_BUFFER_SIZE];
|
||||||
|
static volatile unsigned char UART_RxBuf[UART_RX_BUFFER_SIZE];
|
||||||
|
static volatile unsigned char UART_TxHead;
|
||||||
|
static volatile unsigned char UART_TxTail;
|
||||||
|
static volatile unsigned char UART_RxHead;
|
||||||
|
static volatile unsigned char UART_RxTail;
|
||||||
|
static volatile unsigned char UART_LastRxError;
|
||||||
|
|
||||||
|
#if defined( ATMEGA_USART1 )
|
||||||
|
static volatile unsigned char UART1_TxBuf[UART_TX_BUFFER_SIZE];
|
||||||
|
static volatile unsigned char UART1_RxBuf[UART_RX_BUFFER_SIZE];
|
||||||
|
static volatile unsigned char UART1_TxHead;
|
||||||
|
static volatile unsigned char UART1_TxTail;
|
||||||
|
static volatile unsigned char UART1_RxHead;
|
||||||
|
static volatile unsigned char UART1_RxTail;
|
||||||
|
static volatile unsigned char UART1_LastRxError;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
ISR (UART0_RECEIVE_INTERRUPT)
|
||||||
|
/*************************************************************************
|
||||||
|
Function: UART Receive Complete interrupt
|
||||||
|
Purpose: called when the UART has received a character
|
||||||
|
**************************************************************************/
|
||||||
|
{
|
||||||
|
unsigned char tmphead;
|
||||||
|
unsigned char data;
|
||||||
|
unsigned char usr;
|
||||||
|
unsigned char lastRxError;
|
||||||
|
|
||||||
|
|
||||||
|
/* read UART status register and UART data register */
|
||||||
|
usr = UART0_STATUS;
|
||||||
|
data = UART0_DATA;
|
||||||
|
|
||||||
|
/* */
|
||||||
|
#if defined( AT90_UART )
|
||||||
|
lastRxError = (usr & (_BV(FE)|_BV(DOR)) );
|
||||||
|
#elif defined( ATMEGA_USART )
|
||||||
|
lastRxError = (usr & (_BV(FE)|_BV(DOR)) );
|
||||||
|
#elif defined( ATMEGA_USART0 )
|
||||||
|
lastRxError = (usr & (_BV(FE0)|_BV(DOR0)) );
|
||||||
|
#elif defined ( ATMEGA_UART )
|
||||||
|
lastRxError = (usr & (_BV(FE)|_BV(DOR)) );
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* calculate buffer index */
|
||||||
|
tmphead = ( UART_RxHead + 1) & UART_RX_BUFFER_MASK;
|
||||||
|
|
||||||
|
if ( tmphead == UART_RxTail ) {
|
||||||
|
/* error: receive buffer overflow */
|
||||||
|
lastRxError = UART_BUFFER_OVERFLOW >> 8;
|
||||||
|
}else{
|
||||||
|
/* store new index */
|
||||||
|
UART_RxHead = tmphead;
|
||||||
|
/* store received data in buffer */
|
||||||
|
UART_RxBuf[tmphead] = data;
|
||||||
|
}
|
||||||
|
UART_LastRxError |= lastRxError;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
ISR (UART0_TRANSMIT_INTERRUPT)
|
||||||
|
/*************************************************************************
|
||||||
|
Function: UART Data Register Empty interrupt
|
||||||
|
Purpose: called when the UART is ready to transmit the next byte
|
||||||
|
**************************************************************************/
|
||||||
|
{
|
||||||
|
unsigned char tmptail;
|
||||||
|
|
||||||
|
|
||||||
|
if ( UART_TxHead != UART_TxTail) {
|
||||||
|
/* calculate and store new buffer index */
|
||||||
|
tmptail = (UART_TxTail + 1) & UART_TX_BUFFER_MASK;
|
||||||
|
UART_TxTail = tmptail;
|
||||||
|
/* get one byte from buffer and write it to UART */
|
||||||
|
UART0_DATA = UART_TxBuf[tmptail]; /* start transmission */
|
||||||
|
}else{
|
||||||
|
/* tx buffer empty, disable UDRE interrupt */
|
||||||
|
UART0_CONTROL &= ~_BV(UART0_UDRIE);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_init()
|
||||||
|
Purpose: initialize UART and set baudrate
|
||||||
|
Input: baudrate using macro UART_BAUD_SELECT()
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart_init(unsigned int baudrate)
|
||||||
|
{
|
||||||
|
UART_TxHead = 0;
|
||||||
|
UART_TxTail = 0;
|
||||||
|
UART_RxHead = 0;
|
||||||
|
UART_RxTail = 0;
|
||||||
|
|
||||||
|
#if defined( AT90_UART )
|
||||||
|
/* set baud rate */
|
||||||
|
UBRR = (unsigned char)baudrate;
|
||||||
|
|
||||||
|
/* enable UART receiver and transmmitter and receive complete interrupt */
|
||||||
|
UART0_CONTROL = _BV(RXCIE)|_BV(RXEN)|_BV(TXEN);
|
||||||
|
|
||||||
|
#elif defined (ATMEGA_USART)
|
||||||
|
/* Set baud rate */
|
||||||
|
if ( baudrate & 0x8000 )
|
||||||
|
{
|
||||||
|
UART0_STATUS = (1<<U2X); //Enable 2x speed
|
||||||
|
baudrate &= ~0x8000;
|
||||||
|
}
|
||||||
|
UBRRH = (unsigned char)(baudrate>>8);
|
||||||
|
UBRRL = (unsigned char) baudrate;
|
||||||
|
|
||||||
|
/* Enable USART receiver and transmitter and receive complete interrupt */
|
||||||
|
UART0_CONTROL = _BV(RXCIE)|(1<<RXEN)|(1<<TXEN);
|
||||||
|
|
||||||
|
/* Set frame format: asynchronous, 8data, no parity, 1stop bit */
|
||||||
|
#ifdef URSEL
|
||||||
|
UCSRC = (1<<URSEL)|(3<<UCSZ0);
|
||||||
|
#else
|
||||||
|
UCSRC = (3<<UCSZ0);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#elif defined (ATMEGA_USART0 )
|
||||||
|
/* Set baud rate */
|
||||||
|
if ( baudrate & 0x8000 )
|
||||||
|
{
|
||||||
|
UART0_STATUS = (1<<U2X0); //Enable 2x speed
|
||||||
|
baudrate &= ~0x8000;
|
||||||
|
}
|
||||||
|
UBRR0H = (unsigned char)(baudrate>>8);
|
||||||
|
UBRR0L = (unsigned char) baudrate;
|
||||||
|
|
||||||
|
/* Enable USART receiver and transmitter and receive complete interrupt */
|
||||||
|
UART0_CONTROL = _BV(RXCIE0)|(1<<RXEN0)|(1<<TXEN0);
|
||||||
|
|
||||||
|
/* Set frame format: asynchronous, 8data, no parity, 1stop bit */
|
||||||
|
#ifdef URSEL0
|
||||||
|
UCSR0C = (1<<URSEL0)|(3<<UCSZ00);
|
||||||
|
#else
|
||||||
|
UCSR0C = (3<<UCSZ00);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#elif defined ( ATMEGA_UART )
|
||||||
|
/* set baud rate */
|
||||||
|
if ( baudrate & 0x8000 )
|
||||||
|
{
|
||||||
|
UART0_STATUS = (1<<U2X); //Enable 2x speed
|
||||||
|
baudrate &= ~0x8000;
|
||||||
|
}
|
||||||
|
UBRRHI = (unsigned char)(baudrate>>8);
|
||||||
|
UBRR = (unsigned char) baudrate;
|
||||||
|
|
||||||
|
/* Enable UART receiver and transmitter and receive complete interrupt */
|
||||||
|
UART0_CONTROL = _BV(RXCIE)|(1<<RXEN)|(1<<TXEN);
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
}/* uart_init */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_getc()
|
||||||
|
Purpose: return byte from ringbuffer
|
||||||
|
Returns: lower byte: received byte from ringbuffer
|
||||||
|
higher byte: last receive error
|
||||||
|
**************************************************************************/
|
||||||
|
unsigned int uart_getc(void)
|
||||||
|
{
|
||||||
|
unsigned char tmptail;
|
||||||
|
unsigned char data;
|
||||||
|
|
||||||
|
|
||||||
|
if ( UART_RxHead == UART_RxTail ) {
|
||||||
|
return UART_NO_DATA; /* no data available */
|
||||||
|
}
|
||||||
|
|
||||||
|
/* calculate /store buffer index */
|
||||||
|
tmptail = (UART_RxTail + 1) & UART_RX_BUFFER_MASK;
|
||||||
|
UART_RxTail = tmptail;
|
||||||
|
|
||||||
|
/* get data from receive buffer */
|
||||||
|
data = UART_RxBuf[tmptail];
|
||||||
|
|
||||||
|
data = (UART_LastRxError << 8) + data;
|
||||||
|
UART_LastRxError = 0;
|
||||||
|
return data;
|
||||||
|
|
||||||
|
}/* uart_getc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_putc()
|
||||||
|
Purpose: write byte to ringbuffer for transmitting via UART
|
||||||
|
Input: byte to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart_putc(unsigned char data)
|
||||||
|
{
|
||||||
|
unsigned char tmphead;
|
||||||
|
|
||||||
|
|
||||||
|
tmphead = (UART_TxHead + 1) & UART_TX_BUFFER_MASK;
|
||||||
|
|
||||||
|
while ( tmphead == UART_TxTail ){
|
||||||
|
;/* wait for free space in buffer */
|
||||||
|
}
|
||||||
|
|
||||||
|
UART_TxBuf[tmphead] = data;
|
||||||
|
UART_TxHead = tmphead;
|
||||||
|
|
||||||
|
/* enable UDRE interrupt */
|
||||||
|
UART0_CONTROL |= _BV(UART0_UDRIE);
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
}/* uart_putc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_puts()
|
||||||
|
Purpose: transmit string to UART
|
||||||
|
Input: string to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart_puts(const char *s )
|
||||||
|
{
|
||||||
|
while (*s)
|
||||||
|
uart_putc(*s++);
|
||||||
|
|
||||||
|
}/* uart_puts */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_puts_p()
|
||||||
|
Purpose: transmit string from program memory to UART
|
||||||
|
Input: program memory string to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart_puts_p(const char *progmem_s )
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = pgm_read_byte(progmem_s++)) )
|
||||||
|
uart_putc(c);
|
||||||
|
|
||||||
|
}/* uart_puts_p */
|
||||||
|
|
||||||
|
|
@ -0,0 +1,180 @@
|
||||||
|
#ifndef UART_H
|
||||||
|
#define UART_H
|
||||||
|
/************************************************************************
|
||||||
|
Title: Interrupt UART library with receive/transmit circular buffers
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: uart.h,v 1.12 2012/11/19 19:52:27 peter Exp $
|
||||||
|
Software: AVR-GCC 4.1, AVR Libc 1.4
|
||||||
|
Hardware: any AVR with built-in UART, tested on AT90S8515 & ATmega8 at 4 Mhz
|
||||||
|
License: GNU General Public License
|
||||||
|
Usage: see Doxygen manual
|
||||||
|
|
||||||
|
LICENSE:
|
||||||
|
Copyright (C) 2006 Peter Fleury
|
||||||
|
|
||||||
|
This program is free software; you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation; either version 2 of the License, or
|
||||||
|
any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
************************************************************************/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @defgroup pfleury_uart UART Library
|
||||||
|
* @code #include <uart.h> @endcode
|
||||||
|
*
|
||||||
|
* @brief Interrupt UART library using the built-in UART with transmit and receive circular buffers.
|
||||||
|
*
|
||||||
|
* This library can be used to transmit and receive data through the built in UART.
|
||||||
|
*
|
||||||
|
* An interrupt is generated when the UART has finished transmitting or
|
||||||
|
* receiving a byte. The interrupt handling routines use circular buffers
|
||||||
|
* for buffering received and transmitted data.
|
||||||
|
*
|
||||||
|
* The UART_RX_BUFFER_SIZE and UART_TX_BUFFER_SIZE constants define
|
||||||
|
* the size of the circular buffers in bytes. Note that these constants must be a power of 2.
|
||||||
|
* You may need to adapt this constants to your target and your application by adding
|
||||||
|
* CDEFS += -DUART_RX_BUFFER_SIZE=nn -DUART_RX_BUFFER_SIZE=nn to your Makefile.
|
||||||
|
*
|
||||||
|
* @note Based on Atmel Application Note AVR306
|
||||||
|
* @author Peter Fleury pfleury@gmx.ch http://jump.to/fleury
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**@{*/
|
||||||
|
|
||||||
|
|
||||||
|
#if (__GNUC__ * 100 + __GNUC_MINOR__) < 304
|
||||||
|
#error "This library requires AVR-GCC 3.4 or later, update to newer AVR-GCC compiler !"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** constants and macros
|
||||||
|
*/
|
||||||
|
|
||||||
|
/** @brief UART Baudrate Expression
|
||||||
|
* @param xtalcpu system clock in Mhz, e.g. 4000000UL for 4Mhz
|
||||||
|
* @param baudrate baudrate in bps, e.g. 1200, 2400, 9600
|
||||||
|
*/
|
||||||
|
#define UART_BAUD_SELECT(baudRate,xtalCpu) (((xtalCpu) + 8UL * (baudRate)) / (16UL * (baudRate)) -1UL)
|
||||||
|
|
||||||
|
/** @brief UART Baudrate Expression for ATmega double speed mode
|
||||||
|
* @param xtalcpu system clock in Mhz, e.g. 4000000UL for 4Mhz
|
||||||
|
* @param baudrate baudrate in bps, e.g. 1200, 2400, 9600
|
||||||
|
*/
|
||||||
|
#define UART_BAUD_SELECT_DOUBLE_SPEED(baudRate,xtalCpu) ( ((((xtalCpu) + 4UL * (baudRate)) / (8UL * (baudRate)) -1UL)) | 0x8000)
|
||||||
|
|
||||||
|
|
||||||
|
/** Size of the circular receive buffer, must be power of 2 */
|
||||||
|
#ifndef UART_RX_BUFFER_SIZE
|
||||||
|
#define UART_RX_BUFFER_SIZE 32
|
||||||
|
#endif
|
||||||
|
/** Size of the circular transmit buffer, must be power of 2 */
|
||||||
|
#ifndef UART_TX_BUFFER_SIZE
|
||||||
|
#define UART_TX_BUFFER_SIZE 32
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* test if the size of the circular buffers fits into SRAM */
|
||||||
|
#if ( (UART_RX_BUFFER_SIZE+UART_TX_BUFFER_SIZE) >= (RAMEND-0x60 ) )
|
||||||
|
#error "size of UART_RX_BUFFER_SIZE + UART_TX_BUFFER_SIZE larger than size of SRAM"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
** high byte error return code of uart_getc()
|
||||||
|
*/
|
||||||
|
#define UART_FRAME_ERROR 0x1000 /* Framing Error by UART */
|
||||||
|
#define UART_OVERRUN_ERROR 0x0800 /* Overrun condition by UART */
|
||||||
|
#define UART_PARITY_ERROR 0x0400 /* Parity Error by UART */
|
||||||
|
#define UART_BUFFER_OVERFLOW 0x0200 /* receive ringbuffer overflow */
|
||||||
|
#define UART_NO_DATA 0x0100 /* no receive data available */
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** function prototypes
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Initialize UART and set baudrate
|
||||||
|
@param baudrate Specify baudrate using macro UART_BAUD_SELECT()
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void uart_init(unsigned int baudrate);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Get received byte from ringbuffer
|
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|
*
|
||||||
|
* Returns in the lower byte the received character and in the
|
||||||
|
* higher byte the last receive error.
|
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|
* UART_NO_DATA is returned when no data is available.
|
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|
*
|
||||||
|
* @param void
|
||||||
|
* @return lower byte: received byte from ringbuffer
|
||||||
|
* @return higher byte: last receive status
|
||||||
|
* - \b 0 successfully received data from UART
|
||||||
|
* - \b UART_NO_DATA
|
||||||
|
* <br>no receive data available
|
||||||
|
* - \b UART_BUFFER_OVERFLOW
|
||||||
|
* <br>Receive ringbuffer overflow.
|
||||||
|
* We are not reading the receive buffer fast enough,
|
||||||
|
* one or more received character have been dropped
|
||||||
|
* - \b UART_OVERRUN_ERROR
|
||||||
|
* <br>Overrun condition by UART.
|
||||||
|
* A character already present in the UART UDR register was
|
||||||
|
* not read by the interrupt handler before the next character arrived,
|
||||||
|
* one or more received characters have been dropped.
|
||||||
|
* - \b UART_FRAME_ERROR
|
||||||
|
* <br>Framing Error by UART
|
||||||
|
*/
|
||||||
|
extern unsigned int uart_getc(void);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Put byte to ringbuffer for transmitting via UART
|
||||||
|
* @param data byte to be transmitted
|
||||||
|
* @return none
|
||||||
|
*/
|
||||||
|
extern void uart_putc(unsigned char data);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Put string to ringbuffer for transmitting via UART
|
||||||
|
*
|
||||||
|
* The string is buffered by the uart library in a circular buffer
|
||||||
|
* and one character at a time is transmitted to the UART using interrupts.
|
||||||
|
* Blocks if it can not write the whole string into the circular buffer.
|
||||||
|
*
|
||||||
|
* @param s string to be transmitted
|
||||||
|
* @return none
|
||||||
|
*/
|
||||||
|
extern void uart_puts(const char *s );
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Put string from program memory to ringbuffer for transmitting via UART.
|
||||||
|
*
|
||||||
|
* The string is buffered by the uart library in a circular buffer
|
||||||
|
* and one character at a time is transmitted to the UART using interrupts.
|
||||||
|
* Blocks if it can not write the whole string into the circular buffer.
|
||||||
|
*
|
||||||
|
* @param s program memory string to be transmitted
|
||||||
|
* @return none
|
||||||
|
* @see uart_puts_P
|
||||||
|
*/
|
||||||
|
extern void uart_puts_p(const char *s );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Macro to automatically put a string constant into program memory
|
||||||
|
*/
|
||||||
|
#define uart_puts_P(__s) uart_puts_p(PSTR(__s))
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#endif // UART_H
|
||||||
|
|
||||||
|
|
@ -0,0 +1,39 @@
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <util/delay.h>
|
||||||
|
#include "uart.h"
|
||||||
|
|
||||||
|
void wait(uint8_t count) {
|
||||||
|
uint8_t i;
|
||||||
|
if(count == 0) count = 100;
|
||||||
|
for(i=0;i<count;i++) {
|
||||||
|
_delay_ms(10);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void uart_print_voltage(uint16_t x) {
|
||||||
|
uart_putc(48 + (x / 10000));
|
||||||
|
uart_putc(48 + (x % 10000 /1000));
|
||||||
|
uart_putc('.');
|
||||||
|
uart_putc(48 + (x % 1000 / 100 ));
|
||||||
|
//uart_putc(48 + (x % 100 / 10 ));
|
||||||
|
//uart_putc(48 + (x % 10));
|
||||||
|
}
|
||||||
|
|
||||||
|
void uart_print_int16(int16_t x) {
|
||||||
|
if(x <0) uart_putc('-');
|
||||||
|
uart_putc(48 + (x / 10000));
|
||||||
|
uart_putc(48 + (x % 10000 /1000));
|
||||||
|
uart_putc(48 + (x % 1000 / 100 ));
|
||||||
|
uart_putc(48 + (x % 100 / 10 ));
|
||||||
|
uart_putc(48 + (x % 10));
|
||||||
|
}
|
||||||
|
|
||||||
|
void uart_print_uint16(uint16_t x) {
|
||||||
|
uart_putc(48 + (x / 10000));
|
||||||
|
uart_putc(48 + (x % 10000 /1000));
|
||||||
|
uart_putc(48 + (x % 1000 / 100 ));
|
||||||
|
uart_putc(48 + (x % 100 / 10 ));
|
||||||
|
uart_putc(48 + (x % 10));
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -0,0 +1,12 @@
|
||||||
|
#ifndef _utils_h
|
||||||
|
#define _utils_h
|
||||||
|
|
||||||
|
extern void wait(uint8_t count);
|
||||||
|
extern void uart_print_voltage(uint16_t);
|
||||||
|
extern void uart_print_int16(int16_t);
|
||||||
|
extern void uart_print_uint16(uint16_t);
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue