Started following some tutorial on att85 usi. Downloaded example code from make avr book.
This commit is contained in:
Dan
196
Make AVR Examples/setupProject/Makefile
Normal file
196
Make AVR Examples/setupProject/Makefile
Normal file
@@ -0,0 +1,196 @@
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##########------------------------------------------------------##########
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########## Project-specific Details ##########
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########## Check these every time you start a new project ##########
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##########------------------------------------------------------##########
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MCU = atmega168p
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F_CPU = 8000000UL
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BAUD = 9600UL
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## Also try BAUD = 19200 or 38400 if you're feeling lucky.
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## A directory for common include files and the simple USART library.
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## If you move either the current folder or the Library folder, you'll
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## need to change this path to match.
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LIBDIR = ../../AVR-Programming-Library
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##########------------------------------------------------------##########
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########## Programmer Defaults ##########
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########## Set up once, then forget about it ##########
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########## (Can override. See bottom of file.) ##########
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##########------------------------------------------------------##########
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PROGRAMMER_TYPE = usbtiny
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# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
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PROGRAMMER_ARGS =
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##########------------------------------------------------------##########
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########## Program Locations ##########
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########## Won't need to change if they're in your PATH ##########
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##########------------------------------------------------------##########
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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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AVRSIZE = avr-size
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AVRDUDE = avrdude
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##########------------------------------------------------------##########
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########## Makefile Magic! ##########
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########## Summary: ##########
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########## We want a .hex file ##########
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########## Compile source files into .elf ##########
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########## Convert .elf file into .hex ##########
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########## You shouldn't need to edit below. ##########
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##########------------------------------------------------------##########
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## The name of your project (without the .c)
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# TARGET = blinkLED
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## Or name it automatically after the enclosing directory
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TARGET = $(lastword $(subst /, ,$(CURDIR)))
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# Object files: will find all .c/.h files in current directory
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# and in LIBDIR. If you have any other (sub-)directories with code,
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# you can add them in to SOURCES below in the wildcard statement.
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SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
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OBJECTS=$(SOURCES:.c=.o)
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HEADERS=$(SOURCES:.c=.h)
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## Compilation options, type man avr-gcc if you're curious.
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CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
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CFLAGS = -Os -g -std=gnu99 -Wall
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## Use short (8-bit) data types
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CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
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## Splits up object files per function
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CFLAGS += -ffunction-sections -fdata-sections
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LDFLAGS = -Wl,-Map,$(TARGET).map
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## Optional, but often ends up with smaller code
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LDFLAGS += -Wl,--gc-sections
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## Relax shrinks code even more, but makes disassembly messy
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## LDFLAGS += -Wl,--relax
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## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm ## for floating-point printf
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## LDFLAGS += -Wl,-u,vfprintf -lprintf_min ## for smaller printf
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TARGET_ARCH = -mmcu=$(MCU)
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## Explicit pattern rules:
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## To make .o files from .c files
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%.o: %.c $(HEADERS) Makefile
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$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
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$(TARGET).elf: $(OBJECTS)
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$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
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%.hex: %.elf
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$(OBJCOPY) -j .text -j .data -O ihex $< $@
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%.eeprom: %.elf
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$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
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%.lst: %.elf
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$(OBJDUMP) -S $< > $@
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## These targets don't have files named after them
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.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
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all: $(TARGET).hex
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debug:
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@echo
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@echo "Source files:" $(SOURCES)
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@echo "MCU, F_CPU, BAUD:" $(MCU), $(F_CPU), $(BAUD)
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@echo
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# Optionally create listing file from .elf
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# This creates approximate assembly-language equivalent of your code.
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# Useful for debugging time-sensitive bits,
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# or making sure the compiler does what you want.
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disassemble: $(TARGET).lst
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disasm: disassemble
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# Optionally show how big the resulting program is
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size: $(TARGET).elf
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$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
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clean:
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rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
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$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
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$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
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$(TARGET).eeprom
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squeaky_clean:
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rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
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##########------------------------------------------------------##########
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########## Programmer-specific details ##########
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########## Flashing code to AVR using avrdude ##########
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##########------------------------------------------------------##########
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flash: $(TARGET).hex
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
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## An alias
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program: flash
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flash_eeprom: $(TARGET).eeprom
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
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avrdude_terminal:
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
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## If you've got multiple programmers that you use,
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## you can define them here so that it's easy to switch.
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## To invoke, use something like `make flash_arduinoISP`
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flash_usbtiny: PROGRAMMER_TYPE = usbtiny
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flash_usbtiny: PROGRAMMER_ARGS = # USBTiny works with no further arguments
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flash_usbtiny: flash
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flash_usbasp: PROGRAMMER_TYPE = usbasp
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flash_usbasp: PROGRAMMER_ARGS = # USBasp works with no further arguments
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flash_usbasp: flash
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flash_arduinoISP: PROGRAMMER_TYPE = avrisp
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flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0
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## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
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flash_arduinoISP: flash
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flash_109: PROGRAMMER_TYPE = avr109
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flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
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flash_109: flash
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##########------------------------------------------------------##########
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########## Fuse settings and suitable defaults ##########
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##########------------------------------------------------------##########
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## Mega 48, 88, 168, 328 default values
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LFUSE = 0x62
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HFUSE = 0xdf
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EFUSE = 0x00
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## Generic
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FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
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fuses:
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
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$(PROGRAMMER_ARGS) $(FUSE_STRING)
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show_fuses:
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv
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## Called with no extra definitions, sets to defaults
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set_default_fuses: FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
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set_default_fuses: fuses
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## Set the fuse byte for full-speed mode
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## Note: can also be set in firmware for modern chips
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set_fast_fuse: LFUSE = 0xE2
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set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m
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set_fast_fuse: fuses
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## Set the EESAVE fuse byte to preserve EEPROM across flashes
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set_eeprom_save_fuse: HFUSE = 0xD7
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set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
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set_eeprom_save_fuse: fuses
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## Clear the EESAVE fuse byte
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clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
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clear_eeprom_save_fuse: fuses
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137
Make AVR Examples/setupProject/USART.c
Normal file
137
Make AVR Examples/setupProject/USART.c
Normal file
@@ -0,0 +1,137 @@
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/*
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Quick and dirty functions that make serial communications work.
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Note that receiveByte() blocks -- it sits and waits _forever_ for
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a byte to come in. If you're doing anything that's more interesting,
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you'll want to implement this with interrupts.
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initUSART requires BAUDRATE to be defined in order to calculate
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the bit-rate multiplier. 9600 is a reasonable default.
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May not work with some of the older chips:
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Tiny2313, Mega8, Mega16, Mega32 have different pin macros
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If you're using these chips, see (e.g.) iom8.h for how it's done.
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These old chips don't specify UDR0 vs UDR1.
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Correspondingly, the macros will just be defined as UDR.
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*/
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#include <avr/io.h>
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#include "USART.h"
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#include <util/setbaud.h>
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void initUSART(void) { /* requires BAUD */
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UBRR0H = UBRRH_VALUE; /* defined in setbaud.h */
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UBRR0L = UBRRL_VALUE;
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#if USE_2X
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UCSR0A |= (1 << U2X0);
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#else
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UCSR0A &= ~(1 << U2X0);
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#endif
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/* Enable USART transmitter/receiver */
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UCSR0B = (1 << TXEN0) | (1 << RXEN0);
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UCSR0C = (1 << UCSZ01) | (1 << UCSZ00); /* 8 data bits, 1 stop bit */
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}
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void transmitByte(uint8_t data) {
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/* Wait for empty transmit buffer */
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loop_until_bit_is_set(UCSR0A, UDRE0);
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UDR0 = data; /* send data */
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}
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uint8_t receiveByte(void) {
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loop_until_bit_is_set(UCSR0A, RXC0); /* Wait for incoming data */
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return UDR0; /* return register value */
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}
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/* Here are a bunch of useful printing commands */
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void printString(const char myString[]) {
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uint8_t i = 0;
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while (myString[i]) {
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transmitByte(myString[i]);
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i++;
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}
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}
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void readString(char myString[], uint8_t maxLength) {
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char response;
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uint8_t i;
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i = 0;
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while (i < (maxLength - 1)) { /* prevent over-runs */
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response = receiveByte();
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transmitByte(response); /* echo */
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if (response == '\r') { /* enter marks the end */
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break;
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}
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else {
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myString[i] = response; /* add in a letter */
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i++;
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}
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}
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myString[i] = 0; /* terminal NULL character */
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}
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void printByte(uint8_t byte) {
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/* Converts a byte to a string of decimal text, sends it */
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transmitByte('0' + (byte / 100)); /* Hundreds */
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transmitByte('0' + ((byte / 10) % 10)); /* Tens */
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transmitByte('0' + (byte % 10)); /* Ones */
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}
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void printWord(uint16_t word) {
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transmitByte('0' + (word / 10000)); /* Ten-thousands */
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transmitByte('0' + ((word / 1000) % 10)); /* Thousands */
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transmitByte('0' + ((word / 100) % 10)); /* Hundreds */
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transmitByte('0' + ((word / 10) % 10)); /* Tens */
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transmitByte('0' + (word % 10)); /* Ones */
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}
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void printBinaryByte(uint8_t byte) {
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/* Prints out a byte as a series of 1's and 0's */
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uint8_t bit;
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for (bit = 7; bit < 255; bit--) {
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if (bit_is_set(byte, bit))
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transmitByte('1');
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else
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transmitByte('0');
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}
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}
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char nibbleToHexCharacter(uint8_t nibble) {
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/* Converts 4 bits into hexadecimal */
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if (nibble < 10) {
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return ('0' + nibble);
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}
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else {
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return ('A' + nibble - 10);
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}
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}
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void printHexByte(uint8_t byte) {
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/* Prints a byte as its hexadecimal equivalent */
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uint8_t nibble;
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nibble = (byte & 0b11110000) >> 4;
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transmitByte(nibbleToHexCharacter(nibble));
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nibble = byte & 0b00001111;
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transmitByte(nibbleToHexCharacter(nibble));
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}
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uint8_t getNumber(void) {
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// Gets a numerical 0-255 from the serial port.
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// Converts from string to number.
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char hundreds = '0';
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char tens = '0';
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char ones = '0';
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char thisChar = '0';
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do { /* shift over */
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hundreds = tens;
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tens = ones;
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ones = thisChar;
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thisChar = receiveByte(); /* get a new character */
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transmitByte(thisChar); /* echo */
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} while (thisChar != '\r'); /* until type return */
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return (100 * (hundreds - '0') + 10 * (tens - '0') + ones - '0');
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}
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44
Make AVR Examples/setupProject/USART.h
Normal file
44
Make AVR Examples/setupProject/USART.h
Normal file
@@ -0,0 +1,44 @@
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/* Functions to initialize, send, receive over USART
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initUSART requires BAUD to be defined in order to calculate
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the bit-rate multiplier.
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*/
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#ifndef BAUD /* if not defined in Makefile... */
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#define BAUD 9600 /* set a safe default baud rate */
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#endif
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/* These are defined for convenience */
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#define USART_HAS_DATA bit_is_set(UCSR0A, RXC0)
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#define USART_READY bit_is_set(UCSR0A, UDRE0)
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/* Takes the defined BAUD and F_CPU,
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calculates the bit-clock multiplier,
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and configures the hardware USART */
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void initUSART(void);
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/* Blocking transmit and receive functions.
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When you call receiveByte() your program will hang until
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data comes through. We'll improve on this later. */
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void transmitByte(uint8_t data);
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uint8_t receiveByte(void);
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void printString(const char myString[]);
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/* Utility function to transmit an entire string from RAM */
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void readString(char myString[], uint8_t maxLength);
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/* Define a string variable, pass it to this function
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The string will contain whatever you typed over serial */
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void printByte(uint8_t byte);
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/* Prints a byte out as its 3-digit ascii equivalent */
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void printWord(uint16_t word);
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/* Prints a word (16-bits) out as its 5-digit ascii equivalent */
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void printBinaryByte(uint8_t byte);
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/* Prints a byte out in 1s and 0s */
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char nibbleToHex(uint8_t nibble);
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void printHexByte(uint8_t byte);
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/* Prints a byte out in hexadecimal */
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uint8_t getNumber(void);
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/* takes in up to three ascii digits,
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converts them to a byte when press enter */
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61
Make AVR Examples/setupProject/createPinDefines.py
Normal file
61
Make AVR Examples/setupProject/createPinDefines.py
Normal file
@@ -0,0 +1,61 @@
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#! /usr/bin/env python
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## Given a list of names and pin defines, runs through a routine that
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## sets up a standard set of macros which can then be cut/paste or
|
||||
## otherwise included.
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import sys
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try:
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outputFilename = sys.argv[1]
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except:
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print
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print 'No filename passed, saving to "pinDefinitions.h" in this directory.'
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outputFilename = "pinDefinitions.h"
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print
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print
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print "First we need to define macro names and the coresponding AVR pins."
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print "None of the names are case-sensitive -- all are converted to uppercase."
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print "When you're done, hit [enter] for the macro name."
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print " "
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nicknames = []
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pinouts = []
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while(True):
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nickname = raw_input("\nPin Macro Name: ").strip().upper()
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if (nickname == ""):
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break
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nicknames.append(nickname)
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pinout = raw_input("AVR Pinout: ").strip().upper()
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pinouts.append(pinout)
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output = "// ---------------\n// Pin Defines \n// ---------------\n\n"
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for (nickname, pinout) in zip(nicknames, pinouts):
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output += "#define %s %s\n" % (nickname, pinout)
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output += "#define %s_PORT PORT%s\n" % (nickname, pinout[1])
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output += "#define %s_PIN PIN%s\n" % (nickname, pinout[1])
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output += "#define %s_DDR DDR%s\n" % (nickname, pinout[1])
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output += "#define %s_SET_OUTPUT %s_DDR |= _BV(%s)\n" %\
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(nickname, nickname, nickname)
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output += "#define %s_SET_INPUT %s_DDR &= ~_BV(%s)\n" %\
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(nickname, nickname, nickname)
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output += "#define %s_SET_HIGH %s_PORT |= _BV(%s)\n" % \
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(nickname, nickname, nickname)
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output += "#define %s_SET_LOW %s_PORT &= ~_BV(%s)\n" % \
|
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(nickname, nickname, nickname)
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output += "#define %s_TOGGLE %s_PORT ^= _BV(%s)\n" % \
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(nickname, nickname, nickname)
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output += "#define %s_IS_HIGH (%s_PIN & _BV(%s))\n" % \
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(nickname, nickname, nickname)
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output += "#define %s_IS_LOW !(%s_PIN & _BV(%s))\n" % \
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(nickname, nickname, nickname)
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output += "\n"
|
||||
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||||
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||||
try:
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outfile = open(outputFilename, "w")
|
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outfile.write(output)
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outfile.close()
|
||||
except NameError:
|
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print output
|
||||
26
Make AVR Examples/setupProject/macros.h
Normal file
26
Make AVR Examples/setupProject/macros.h
Normal file
@@ -0,0 +1,26 @@
|
||||
|
||||
/* Standard Macros */
|
||||
/* You can totally get by without these, but why? */
|
||||
|
||||
/* Make sure we've already got io / sfr / pindefs loaded */
|
||||
#ifndef _AVR_IO_H_
|
||||
#include <avr/io.h>
|
||||
#endif
|
||||
|
||||
/* Reminder: the following useful bit-twiddling macros are
|
||||
always included in avr/sfr_defs.h, which is called from
|
||||
avr/io.h
|
||||
|
||||
bit_is_set(sfr, bit)
|
||||
bit_is_clear(sfr, bit)
|
||||
loop_until_bit_is_set(sfr, bit)
|
||||
loop_until_bit_is_clear(sfr, bit)
|
||||
|
||||
*/
|
||||
|
||||
/* Define up the full complement of bit-twiddling macros */
|
||||
#define BV(bit) (1 << bit)
|
||||
#define set_bit(sfr, bit) (_SFR_BYTE(sfr) |= BV(bit)) // old sbi()
|
||||
#define clear_bit(sfr, bit) (_SFR_BYTE(sfr) &= ~BV(bit)) // old cbi()
|
||||
#define toggle_bit(sfr, bit) (_SFR_BYTE(sfr) ^= BV(bit))
|
||||
|
||||
22
Make AVR Examples/setupProject/main.c
Normal file
22
Make AVR Examples/setupProject/main.c
Normal file
@@ -0,0 +1,22 @@
|
||||
|
||||
#include "main.h"
|
||||
|
||||
// -------- Global Variables --------- //
|
||||
|
||||
// -------- Functions --------- //
|
||||
|
||||
int main(void) {
|
||||
// -------- Inits --------- //
|
||||
|
||||
// clock_prescale_set(clock_div_1); /* CPU Clock: 8 MHz */
|
||||
initUSART();
|
||||
printString("OK");
|
||||
|
||||
// ------ Event loop ------ //
|
||||
while (1) {
|
||||
|
||||
|
||||
|
||||
} /* End event loop */
|
||||
return (0); /* This line is never reached */
|
||||
}
|
||||
19
Make AVR Examples/setupProject/main.h
Normal file
19
Make AVR Examples/setupProject/main.h
Normal file
@@ -0,0 +1,19 @@
|
||||
|
||||
// Standard AVR includes
|
||||
#include <avr/io.h>
|
||||
#include <util/delay.h>
|
||||
#include <avr/interrupt.h>
|
||||
#include <avr/eeprom.h>
|
||||
#include <avr/pgmspace.h>
|
||||
#include <avr/sleep.h>
|
||||
#include <avr/wdt.h>
|
||||
#include <avr/power.h>
|
||||
|
||||
// Standard includes
|
||||
#include <stdlib.h>
|
||||
|
||||
// These are optional, but nice to have around.
|
||||
// Feel free to comment them out if you don't use them.
|
||||
#include "USART.h"
|
||||
#include "macros.h"
|
||||
|
||||
41
Make AVR Examples/setupProject/setupProject.py
Normal file
41
Make AVR Examples/setupProject/setupProject.py
Normal file
@@ -0,0 +1,41 @@
|
||||
#! /usr/bin/env python
|
||||
## Simple Python routine for creating a new AVR project
|
||||
## Feel free to extend this to meet your needs
|
||||
|
||||
## In particular, main.h includes nearly every AVR library you'll ever need
|
||||
## which is no problem, b/c the linker will just ignore the unused ones.
|
||||
## But if you're not using them, it might cause confusion later.
|
||||
## Trim them down to fit?
|
||||
|
||||
## Or, if you're feeling DIY, you can just copy the Makefile, main.c and main.h
|
||||
## into a new directory yourself. The other files are optional, but handy.
|
||||
|
||||
import os
|
||||
import shutil
|
||||
import sys
|
||||
|
||||
## Get command-line input
|
||||
class UsageError(Exception):
|
||||
pass
|
||||
try:
|
||||
newProjectName = sys.argv[1]
|
||||
except IndexError:
|
||||
raise(UsageError("Please specify a project name on the command-line.\n"))
|
||||
|
||||
## Create new project directory...
|
||||
## ... in parent directory
|
||||
## relativeDirectory = os.path.join(os.path.pardir, newProjectName)
|
||||
## ... or in this directory, and you get to move it yourself.
|
||||
relativeDirectory = newProjectName
|
||||
os.mkdir(relativeDirectory)
|
||||
|
||||
## Files copied directly over...
|
||||
def copyToNewDirectory(whichFile, newDirectory):
|
||||
shutil.copy(whichFile, newDirectory)
|
||||
## ... these ones.
|
||||
for filename in ["Makefile", "main.c", "main.h", "USART.h", "USART.c", "macros.h"]:
|
||||
copyToNewDirectory(filename, relativeDirectory)
|
||||
|
||||
print "Copied Makefile, main.c, and main.h into %s." % relativeDirectory
|
||||
print "Time to start coding."
|
||||
|
||||
Reference in New Issue
Block a user