commit 13ea7e7daaa4feb44a93cf362a8148e2fe8d161d Author: Wilhelm Westermark Date: Sat Nov 12 02:17:34 2016 +0100 First commit of AVR code diff --git a/AVR/avrdude.conf b/AVR/avrdude.conf new file mode 120000 index 0000000..ea17eb9 --- /dev/null +++ b/AVR/avrdude.conf @@ -0,0 +1 @@ +/etc/avrdude.conf \ No newline at end of file diff --git a/AVR/main.c b/AVR/main.c new file mode 100644 index 0000000..efb4e74 --- /dev/null +++ b/AVR/main.c @@ -0,0 +1,48 @@ +/* I2C Echo Example */ +#include "../I2CSlave/I2CSlave.h" + +#define I2C_ADDR 0x20 + +volatile uint8_t data; +volatile uint8_t final; +void I2C_received(uint8_t received_data) +{ + data = received_data; +} + +void I2C_requested() +{ + I2C_transmitByte(data); +} +void I2C_challenge() { + I2C_transmitByte(data*3); +} + +void setup() +{ + // set received/requested callbacks + I2C_setCallbacks(I2C_received, I2C_requested); + + // init I2C + I2C_init(I2C_ADDR); + // init output gpio + DDRB = 0b00000001; +} + +int main() +{ + setup(); + + // Main program loop + while(1) { + if(data != 4) { + I2C_challenge(); + } + else { + //PORTB |= 1<<1; + data = 2; + I2C_requested(); + + } + } +} diff --git a/AVR/makefile b/AVR/makefile new file mode 100644 index 0000000..edde024 --- /dev/null +++ b/AVR/makefile @@ -0,0 +1,225 @@ +# Hey Emacs, this is a -*- makefile -*- + +# AVR-GCC Makefile template, derived from the WinAVR template (which +# is public domain), believed to be neutral to any flavor of "make" +# (GNU make, BSD make, SysV make) + + +MCU = atmega328p +FORMAT = ihex +TARGET = main +SRC = $(TARGET).c \ + I2CSlave.c +ASRC = +OPT = s + +# Name of this Makefile (used for "make depend"). +MAKEFILE = Makefile + +# Debugging format. +# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2. +# AVR (extended) COFF requires stabs, plus an avr-objcopy run. +DEBUG = stabs + +# Compiler flag to set the C Standard level. +# c89 - "ANSI" C +# gnu89 - c89 plus GCC extensions +# c99 - ISO C99 standard (not yet fully implemented) +# gnu99 - c99 plus GCC extensions +CSTANDARD = -std=gnu99 + +# Place -D or -U options here +CDEFS = -DF_CPU=8000000 + +# Place -I options here +CINCS = + + +CDEBUG = -g$(DEBUG) +CWARN = -Wall -Wstrict-prototypes +CTUNING = -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums +# CEXTRA = -Wa,-adhlns=$(<:.c=.lst) +CFLAGS = $(CDEBUG) $(CDEFS) $(CINCS) -O$(OPT) $(CWARN) $(CSTANDARD) $(CEXTRA) + + +#ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs + + +#Additional libraries. + +# Minimalistic printf version +PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min + +# Floating point printf version (requires MATH_LIB = -lm below) +PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt + +PRINTF_LIB = + +# Minimalistic scanf version +SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min + +# Floating point + %[ scanf version (requires MATH_LIB = -lm below) +SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt + +SCANF_LIB = + +MATH_LIB = -lm + +# External memory options + +# 64 KB of external RAM, starting after internal RAM (ATmega128!), +# used for variables (.data/.bss) and heap (malloc()). +# EXTMEMOPTS = -Wl,--section-start,.data=0x801100,--defsym=__heap_end=0x80ffff + +# 64 KB of external RAM, starting after internal RAM (ATmega128!), +# only used for heap (malloc()). +# EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff + +EXTMEMOPTS = + +# LDMAP = $(LDFLAGS) -Wl,-Map=$(TARGET).map,--cref +LDFLAGS = $(EXTMEMOPTS) $(LDMAP) $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB) + + +# Programming support using avrdude. Settings and variables. + +AVRDUDE_PROGRAMMER = usbasp +# AVRDUDE_PORT = /dev/term/a + +AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex -U lfuse:w:0xE2:m +# AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep + + +# Uncomment the following if you want avrdude's erase cycle counter. +# Note that this counter needs to be initialized first using -Yn, +# see avrdude manual. +# AVRDUDE_ERASE_COUNTER = -y + +# Uncomment the following if you do /not/ wish a verification to be +# performed after programming the device. +# AVRDUDE_NO_VERIFY = -V + +# Increase verbosity level. Please use this when submitting bug +# reports about avrdude. See +# to submit bug reports. +# AVRDUDE_VERBOSE = -v -v + +AVRDUDE_BASIC = -p $(MCU) -c $(AVRDUDE_PROGRAMMER) +# -P $(AVRDUDE_PORT) +AVRDUDE_FLAGS = $(AVRDUDE_BASIC) $(AVRDUDE_NO_VERIFY) $(AVRDUDE_VERBOSE) $(AVRDUDE_ERASE_COUNTER) + + +CC = avr-gcc +OBJCOPY = avr-objcopy +OBJDUMP = avr-objdump +SIZE = avr-size +NM = avr-nm +AVRDUDE = avrdude +REMOVE = rm -f +MV = mv -f + +# Define all object files. +OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) + +# Define all listing files. +LST = $(ASRC:.S=.lst) $(SRC:.c=.lst) + +# Combine all necessary flags and optional flags. +# Add target processor to flags. +ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) +ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS) + + +# Default target. +all: build + +build: elf hex eep + +elf: $(TARGET).elf +hex: $(TARGET).hex +eep: $(TARGET).eep +lss: $(TARGET).lss +sym: $(TARGET).sym + + +# Program the device. +program: $(TARGET).hex $(TARGET).eep + $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM) + + + + +# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB. +COFFCONVERT=$(OBJCOPY) --debugging \ +--change-section-address .data-0x800000 \ +--change-section-address .bss-0x800000 \ +--change-section-address .noinit-0x800000 \ +--change-section-address .eeprom-0x810000 + + +coff: $(TARGET).elf + $(COFFCONVERT) -O coff-avr $(TARGET).elf $(TARGET).cof + + +extcoff: $(TARGET).elf + $(COFFCONVERT) -O coff-ext-avr $(TARGET).elf $(TARGET).cof + + +.SUFFIXES: .elf .hex .eep .lss .sym + +.elf.hex: + $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@ + +.elf.eep: + -$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \ + --change-section-lma .eeprom=0 -O $(FORMAT) $< $@ + +# Create extended listing file from ELF output file. +.elf.lss: + $(OBJDUMP) -h -S $< > $@ + +# Create a symbol table from ELF output file. +.elf.sym: + $(NM) -n $< > $@ + + + +# Link: create ELF output file from object files. +$(TARGET).elf: $(OBJ) + $(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS) + + +# Compile: create object files from C source files. +.c.o: + $(CC) -c $(ALL_CFLAGS) $< -o $@ + + +# Compile: create assembler files from C source files. +.c.s: + $(CC) -S $(ALL_CFLAGS) $< -o $@ + + +# Assemble: create object files from assembler source files. +.S.o: + $(CC) -c $(ALL_ASFLAGS) $< -o $@ + + + +# Target: clean project. +clean: + $(REMOVE) $(TARGET).hex $(TARGET).eep $(TARGET).cof $(TARGET).elf \ + $(TARGET).map $(TARGET).sym $(TARGET).lss \ + $(OBJ) $(LST) $(SRC:.c=.s) $(SRC:.c=.d) + +depend: + if grep '^# DO NOT DELETE' $(MAKEFILE) >/dev/null; \ + then \ + sed -e '/^# DO NOT DELETE/,$$d' $(MAKEFILE) > \ + $(MAKEFILE).$$$$ && \ + $(MV) $(MAKEFILE).$$$$ $(MAKEFILE); \ + fi + echo '# DO NOT DELETE THIS LINE -- make depend depends on it.' \ + >> $(MAKEFILE); \ + $(CC) -M -mmcu=$(MCU) $(CDEFS) $(CINCS) $(SRC) $(ASRC) >> $(MAKEFILE) + +.PHONY: all build elf hex eep lss sym program coff extcoff clean depend