Tooltron

/********

 * This file is part of Tooltron.

 *

 * Tooltron is free software: you can redistribute it and/or modify

 * it under the terms of the Lesser GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * Tooltron 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

 * Lesser GNU General Public License for more details.

 * You should have received a copy of the Lesser GNU General Public License

 * along with Tooltron.  If not, see <http://www.gnu.org/licenses/>.

 *

 * Copyright 2009 Kevin Woo <kwoo@2ndt.com>

 *

 ********/

/** @file uart.h

 *

 *	@brief Initializes UART functions using the UART hardware module

 *

 *	@author Kevin Woo (kwoo)

 */

#ifndef UART_H

#define UART_H

#include <avr/io.h>

#include <avr/interrupt.h>

#include <stdint.h>

/** **/

#define UART_TX_OFF 0

#define UART_TX_ON 1

/** @brief RX Pin for the UART **/

#define RX		_BV(PORTD0)

#define TX		_BV(PORTD1)

#define TX_EN	_BV(PORTD5)

/** @brief The most recently received byte **/

extern uint8_t received_byte;

/** @brief If the value in received_byte has been read or not **/

extern uint8_t byte_ready;

/** @brief Initializes the UART registers and sets it to the buad rate 

 *         which msut be the value that is defined in the datasheet 

 *         for any particular speed (ie: 51 -> 9600bps)

 **/

void init_uart(uint16_t baud);

/** @brief Gets latest byte and returns it in output_byte. If the byte 

 *         was already read, returns -1 otherwise it returns 0 

 **/

int8_t uart_get_byte(uint8_t *output_byte);

/** @brief Sends a character array of size size. If we are currently 

 *         transmitting it will block until the the current transmit 

 *         is done. 

 **/

void uart_send_byte(uint8_t data);

void uart_toggle_transmit(uint8_t state);

#endif

#include <avr/io.h>

#include <avr/boot.h>

#include <avr/pgmspace.h>

#include <avr/wdt.h>

#include "tooltron.h"

#include "uart.h"

#define TRUE	0

#define FALSE	1

#define ADDR    18

// Error thresholds

#define MAX_TIMEOUT 60000   // Seconds to wait before exiting bootloader mode

#define MAX_RETRIES 5       // Number of times to retry before giving up

// Memory locations

#define MAIN_ADDR 0x000     // Where the user code starts

#define BOOT_START 0x400    // Where the bootloader starts

//Status LED

#define LED_DDR  DDRB

#define LED_PORT PORTB

#define LED      PORTB1

//Function prototypes

void (*main_start)(void) = BOOT_START/2 - 1;

// Packet handler states

typedef enum {

    sd,

    src,

    dest,

    comd,

    read,

    cs,

    ack

} state_t;

typedef union {

    uint8_t bytes[2];

    int16_t sword;

} rjump_t;

void init_uart(uint16_t baud) {

	// Set baud rate

	UBRRH = (uint8_t)(baud>>8);

	UBRRL = (uint8_t)baud;

	// Enable RX/TX

	UCSRB = _BV(RXEN) | _BV(TXEN);

	// Enable the TXEN pin as output

	DDRD |= TX_EN;

    uart_toggle_transmit(UART_TX_OFF);

}

int8_t uart_get_byte(uint8_t *output_byte) {

    if (UCSRA & _BV(RXC)) {

        *output_byte = UDR;

        return 0;

    } else {

        return -1;

    }

}

void uart_send_byte(uint8_t data) {

	//Waits until current transmit is done

    while (!(UCSRA & _BV(UDRE)));

    // Enable writes and send

	uart_toggle_transmit(UART_TX_ON);

    UDR = data;

    // Waits until the transmit is done

    while(!(UCSRA & _BV(TXC)));

    uart_toggle_transmit(UART_TX_OFF);

    UCSRA |= _BV(TXC);

	return;

}

void uart_toggle_transmit(uint8_t state) {

	if (state == UART_TX_ON) {

		PORTD |= TX_EN;

	} else {

		PORTD &= ~TX_EN;

	}

}

char parse_packet(uint8_t *mbuf) {

  uint8_t r;        // Byte from the network

  uint8_t crc;      // Running checksum of the packet

  uint8_t cmd;      // The command received

  uint8_t pos;      // Position in the message buffer

  uint8_t lim;      // Max number of bytes to read into the message buf

  state_t state;    // State machine

  uint16_t count;

  r = 0;

  crc = 0;

  cmd = 0;

  pos = 0;

  lim = 0;

  state = sd;

  count = 0;

  while (1) {

    // Wait for the next byte

    while ((uart_get_byte(&r)) < 0) {

        if (count >= MAX_TIMEOUT) {

            return TT_BAD;

        } else {

            count++;

        }

    }

    switch (state) {

        case sd:

            if (r == DELIM) {

                state = src;

            }

            break;

        case src:

            if (r == DELIM) {

                state = src;

            } else {

                crc = r;

                state = dest;

            }

            break;

        case dest:

            if (r == DELIM) {

                state = src;

            } else if (r == ADDR) {

                crc ^= r;

                state = comd;

            } else {

                state = sd;

            }

            break;

        case comd:

            cmd = r;

            crc ^= r;

            if (r == DELIM) {

                state = src;

            } else if (r == TT_PROGM) {

                lim = PROGM_PACKET_SIZE;

                state = read;

            } else if (r == TT_PROGD) {

                lim = PROGD_PACKET_SIZE;

                state = read;

            } else {

                state = cs;

            }

            break;

        case read:

            mbuf[pos] = r;

            crc ^= r;

            pos++;

            if (pos == lim) {

                state = cs;

            }

            break;

        case cs:

            if (r == crc) {

                return cmd;

            } else {

                return TT_BAD;

            }

            break;

        default:

            return TT_BAD;

    }

  }

}

void send_packet(uint8_t cmd) {

    uart_send_byte(DELIM);

    uart_send_byte(ADDR);

    uart_send_byte(SERVER);

    uart_send_byte(cmd);

    uart_send_byte(ACK_CRC ^ cmd);

}

// SPM_PAGESIZE is set to 32 bytes

void onboard_program_write(uint16_t page, uint8_t *buf) {

  uint16_t i;

  boot_page_erase (page);

  boot_spm_busy_wait ();      // Wait until the memory is erased.

  for (i=0; i < SPM_PAGESIZE; i+=2){

    // Set up little-endian word.

    boot_page_fill (page + i, buf[i] | (buf[i+1] <<8));

  }

  boot_page_write (page);     // Store buffer in flash page.

  boot_spm_busy_wait();       // Wait until the memory is written.

}

int main(void) {

  uint8_t mbuf[PROGD_PACKET_SIZE];

  rjump_t jbuf;

  uint16_t caddr = MAIN_ADDR;

  uint8_t iteration;

  uint8_t resp;

  uint16_t prog_len;

  uint8_t i;

  uint8_t retries;

retry_jpnt:

  iteration = 0;

  retries = 0;

  // Clear the watchdog timer

  MCUSR &= ~_BV(WDRF);

  wdt_disable();

  WDTCSR = 0;

  init_uart(51); //MAGIC NUMBER??

  //set LED pin as output

  LED_DDR |= 0x07;

  PORTB = 0x07;

  //Start bootloading process

  send_packet(TT_BOOT);

  resp = parse_packet(mbuf);

  // Enter programming mode 

  if (resp == TT_PROGM) {

    prog_len = mbuf[0];

    prog_len |= mbuf[1] << 8;

    // This will insert a NOP into the user code jump in case

    // the programming fails

    for (i = 0; i < PROGD_PACKET_SIZE; i++) {

      mbuf[i]= 0;

    }

    onboard_program_write(BOOT_START - SPM_PAGESIZE, mbuf);

  // Run user code

  } else {

      main_start();

  }

  send_packet(TT_ACK);

  while(1) {

      resp = parse_packet(mbuf);

      if (resp == TT_PROGD) {

          // We need to muck with the reset vector jump in the first page

          if (iteration == 0) {

              // Store the jump to user code

              jbuf.bytes[0] = mbuf[0];

              jbuf.bytes[1] = mbuf[1];

              // Rewrite the user code jump to be correct since we are

              // using relative jumps (rjmp)

              jbuf.sword &= 0x0FFF;

              jbuf.sword -= (BOOT_START >> 1) - 1;

              jbuf.sword &= 0x0FFF;

              jbuf.sword |= 0xC000;

              // Rewrite the reset vector to jump to the bootloader

              mbuf[0] = (BOOT_START/2 - 1) & 0xFF;

              mbuf[1] = 0xC0 | (((BOOT_START/2 - 1) >> 8) & 0x0F);

              iteration = 1;

          }

          // Write the page to the flash

          onboard_program_write(caddr, mbuf);

          caddr += PROGD_PACKET_SIZE;

          retries = 0;

      } else {

          send_packet(TT_NACK);

          retries++;

          // If we failed too many times, reset. This goes to the start

          // of the bootloader function

          if (retries > MAX_RETRIES) {

              goto retry_jpnt;

          }

      }

      send_packet(TT_ACK);

      // Once we write the last packet we must override the jump to

      // user code to point to the correct address

      if (prog_len <= PROGD_PACKET_SIZE) {

          for (i = 0; i < PROGD_PACKET_SIZE; i++) {

              mbuf[i]= 0;

          }

          mbuf[PROGD_PACKET_SIZE-2] = jbuf.bytes[0];

          mbuf[PROGD_PACKET_SIZE-1] = jbuf.bytes[1];

          onboard_program_write(BOOT_START - SPM_PAGESIZE, mbuf);

          main_start();

      } else { 

          prog_len -= PROGD_PACKET_SIZE;

      }

  }

  // Should never get here

  return -1;

}

# Hey Emacs, this is a -*- makefile -*-

#----------------------------------------------------------------------------

# WinAVR Makefile Template written by Eric B. Weddington, Jörg Wunsch, et al.

#

# Released to the Public Domain

#

# Additional material for this makefile was written by:

# Peter Fleury

# Tim Henigan

# Colin O'Flynn

# Reiner Patommel

# Markus Pfaff

# Sander Pool

# Frederik Rouleau

#

#----------------------------------------------------------------------------

# On command line:

#

# make all = Make software.

#

# make clean = Clean out built project files.

#

# make coff = Convert ELF to AVR COFF.

#

# make extcoff = Convert ELF to AVR Extended COFF.

#

# make program = Download the hex file to the device, using avrdude.

#                Please customize the avrdude settings below first!

#

# make debug = Start either simulavr or avarice as specified for debugging, 

#              with avr-gdb or avr-insight as the front end for debugging.

#

# make filename.s = Just compile filename.c into the assembler code only.

#

# make filename.i = Create a preprocessed source file for use in submitting

#                   bug reports to the GCC project.

#

# To rebuild project do "make clean" then "make all".

#----------------------------------------------------------------------------

# MCU name

MCU = attiny2313

# Processor frequency.

#     This will define a symbol, F_CPU, in all source code files equal to the 

#     processor frequency. You can then use this symbol in your source code to 

#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done

#     automatically to create a 32-bit value in your source code.

F_CPU = 8000000

# Output format. (can be srec, ihex, binary)

FORMAT = ihex

# Target file name (without extension).

TARGET = bootloader

# List C source files here. (C dependencies are automatically generated.)

SRC =  $(wildcard *.c)

# List Assembler source files here.

#     Make them always end in a capital .S.  Files ending in a lowercase .s

#     will not be considered source files but generated files (assembler

#     output from the compiler), and will be deleted upon "make clean"!

#     Even though the DOS/Win* filesystem matches both .s and .S the same,

#     it will preserve the spelling of the filenames, and gcc itself does

#     care about how the name is spelled on its command-line.

ASRC =

# Optimization level, can be [0, 1, 2, 3, s]. 

#     0 = turn off optimization. s = optimize for size.

#     (Note: 3 is not always the best optimization level. See avr-libc FAQ.)

OPT = s

# Debugging format.

#     Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs.

#     AVR Studio 4.10 requires dwarf-2.

#     AVR [Extended] COFF format requires stabs, plus an avr-objcopy run.

DEBUG =

# List any extra directories to look for include files here.

#     Each directory must be seperated by a space.

#     Use forward slashes for directory separators.

#     For a directory that has spaces, enclose it in quotes.

#EXTRAINCDIRS = C:\WinAVR\include\fwr

# 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=$(F_CPU)UL

# Place -I options here

CINCS =

#---------------- Compiler Options ----------------

#  -g*:          generate debugging information

#  -O*:          optimization level

#  -f...:        tuning, see GCC manual and avr-libc documentation

#  -Wall...:     warning level

#  -Wa,...:      tell GCC to pass this to the assembler.

#    -adhlns...: create assembler listing

#CFLAGS = -g$(DEBUG)

CFLAGS += $(CDEFS) $(CINCS)

CFLAGS += -O$(OPT)

CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums

CFLAGS += -Wall -Wstrict-prototypes

CFLAGS += -Wa,-adhlns=$(<:.c=.lst)

CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))

CFLAGS += $(CSTANDARD)

#---------------- Assembler Options ----------------

#  -Wa,...:   tell GCC to pass this to the assembler.

#  -ahlms:    create listing

#  -gstabs:   have the assembler create line number information; note that

#             for use in COFF files, additional information about filenames

#             and function names needs to be present in the assembler source

#             files -- see avr-libc docs [FIXME: not yet described there]

ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs 

#---------------- Library Options ----------------

# 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

# If this is left blank, then it will use the Standard printf version.

PRINTF_LIB = 

#PRINTF_LIB = $(PRINTF_LIB_MIN)

#PRINTF_LIB = $(PRINTF_LIB_FLOAT)

# 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

# If this is left blank, then it will use the Standard scanf version.

SCANF_LIB = 

#SCANF_LIB = $(SCANF_LIB_MIN)

#SCANF_LIB = $(SCANF_LIB_FLOAT)

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,-Tdata=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 =

#---------------- Linker Options ----------------

#  -Wl,...:     tell GCC to pass this to linker.

#    -Map:      create map file

#    --cref:    add cross reference to  map file

LDFLAGS = -Wl,-Map=$(TARGET).map,--cref,--section-start=.text=0x400

LDFLAGS += $(EXTMEMOPTS)

LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)

#---------------- Programming Options (avrdude) ----------------

# Programming hardware: alf avr910 avrisp bascom bsd 

# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500

#

# Type: avrdude -c ?

# to get a full listing.

#

AVRDUDE_PROGRAMMER = avrispmkII

# com1 = serial port. Use lpt1 to connect to parallel port.

AVRDUDE_PORT = usb 

# programmer connected to serial device

AVRDUDE_WRITE_FLASH = -b 4800 -U flash:w:$(TARGET).hex

#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 <http://savannah.nongnu.org/projects/avrdude> 

# to submit bug reports.

#AVRDUDE_VERBOSE = -v -v

AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)

AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)

AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)

AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)

#---------------- Debugging Options ----------------

# For simulavr only - target MCU frequency.

DEBUG_MFREQ = $(F_CPU)

# Set the DEBUG_UI to either gdb or insight.

# DEBUG_UI = gdb

DEBUG_UI = insight

# Set the debugging back-end to either avarice, simulavr.

DEBUG_BACKEND = avarice

#DEBUG_BACKEND = simulavr

# GDB Init Filename.

GDBINIT_FILE = __avr_gdbinit

# When using avarice settings for the JTAG

JTAG_DEV = /dev/com1

# Debugging port used to communicate between GDB / avarice / simulavr.

DEBUG_PORT = 4242

# Debugging host used to communicate between GDB / avarice / simulavr, normally

#     just set to localhost unless doing some sort of crazy debugging when 

#     avarice is running on a different computer.

DEBUG_HOST = localhost

#============================================================================

# Define programs and commands.

SHELL = sh

CC = avr-gcc

OBJCOPY = avr-objcopy

OBJDUMP = avr-objdump

SIZE = avr-size

NM = avr-nm

AVRDUDE = avrdude

REMOVE = rm -f

COPY = cp

WINSHELL = cmd

# Define Messages

# English

MSG_ERRORS_NONE = Errors: none

MSG_BEGIN = -------- begin --------

MSG_END = --------  end  --------

MSG_SIZE_BEFORE = Size before: 

MSG_SIZE_AFTER = Size after:

MSG_COFF = Converting to AVR COFF:

MSG_EXTENDED_COFF = Converting to AVR Extended COFF:

MSG_FLASH = Creating load file for Flash:

MSG_EEPROM = Creating load file for EEPROM:

MSG_EXTENDED_LISTING = Creating Extended Listing:

MSG_SYMBOL_TABLE = Creating Symbol Table:

MSG_LINKING = Linking:

MSG_COMPILING = Compiling:

MSG_ASSEMBLING = Assembling:

MSG_CLEANING = Cleaning project:

# Define all object files.

OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) 

# Define all listing files.

LST = $(SRC:.c=.lst) $(ASRC:.S=.lst) 

# Compiler flags to generate dependency files.

GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d

# Combine all necessary flags and optional flags.

# Add target processor to flags.

ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)

ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)

# Default target.

all: begin gccversion sizebefore build sizeafter end

build: elf hex eep lss sym

elf: $(TARGET).elf

hex: $(TARGET).hex

eep: $(TARGET).eep

lss: $(TARGET).lss 

sym: $(TARGET).sym

# Eye candy.

# AVR Studio 3.x does not check make's exit code but relies on

# the following magic strings to be generated by the compile job.

begin:

	@echo

	@echo $(MSG_BEGIN)

end:

	@echo $(MSG_END)

	@echo

# Display size of file.

HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex

ELFSIZE = $(SIZE) -A $(TARGET).elf

AVRMEM = avr-mem.sh $(TARGET).elf $(MCU)

sizebefore:

	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \

	$(AVRMEM) 2>/dev/null; echo; fi

sizeafter:

	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); \

	$(AVRMEM) 2>/dev/null; echo; fi

# Display compiler version information.

gccversion : 

	@$(CC) --version

# Program the device.  

program: $(TARGET).hex $(TARGET).eep

	$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)

# Generate avr-gdb config/init file which does the following:

#     define the reset signal, load the target file, connect to target, and set 

#     a breakpoint at main().

gdb-config: 

	@$(REMOVE) $(GDBINIT_FILE)

	@echo define reset >> $(GDBINIT_FILE)

	@echo SIGNAL SIGHUP >> $(GDBINIT_FILE)

	@echo end >> $(GDBINIT_FILE)

	@echo file $(TARGET).elf >> $(GDBINIT_FILE)

	@echo target remote $(DEBUG_HOST):$(DEBUG_PORT)  >> $(GDBINIT_FILE)

ifeq ($(DEBUG_BACKEND),simulavr)

	@echo load  >> $(GDBINIT_FILE)

endif	

	@echo break main >> $(GDBINIT_FILE)

debug: gdb-config $(TARGET).elf

ifeq ($(DEBUG_BACKEND), avarice)

	@echo Starting AVaRICE - Press enter when "waiting to connect" message displays.

	@$(WINSHELL) /c start avarice --jtag $(JTAG_DEV) --erase --program --file \

	$(TARGET).elf $(DEBUG_HOST):$(DEBUG_PORT)

	@$(WINSHELL) /c pause

else

	@$(WINSHELL) /c start simulavr --gdbserver --device $(MCU) --clock-freq \

	$(DEBUG_MFREQ) --port $(DEBUG_PORT)

endif

	@$(WINSHELL) /c start avr-$(DEBUG_UI) --command=$(GDBINIT_FILE)

# 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

	@echo

	@echo $(MSG_COFF) $(TARGET).cof

	$(COFFCONVERT) -O coff-avr $< $(TARGET).cof

extcoff: $(TARGET).elf

	@echo

	@echo $(MSG_EXTENDED_COFF) $(TARGET).cof

	$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof

# Create final output files (.hex, .eep) from ELF output file.

%.hex: %.elf

	@echo

	@echo $(MSG_FLASH) $@

	$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@

%.eep: %.elf

	@echo

	@echo $(MSG_EEPROM) $@

	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \

	--change-section-lma .eeprom=0 -O $(FORMAT) $< $@

# Create extended listing file from ELF output file.

%.lss: %.elf

	@echo

	@echo $(MSG_EXTENDED_LISTING) $@

	$(OBJDUMP) -h -S $< > $@

# Create a symbol table from ELF output file.

%.sym: %.elf

	@echo

	@echo $(MSG_SYMBOL_TABLE) $@

	$(NM) -n $< > $@

# Link: create ELF output file from object files.

.SECONDARY : $(TARGET).elf

.PRECIOUS : $(OBJ)

%.elf: $(OBJ)

	@echo

	@echo $(MSG_LINKING) $@

	$(CC) $(ALL_CFLAGS) $^ --output $@ $(LDFLAGS)

# Compile: create object files from C source files.

%.o : %.c

	@echo

	@echo $(MSG_COMPILING) $<

	$(CC) -c $(ALL_CFLAGS) $< -o $@ 

# Compile: create assembler files from C source files.

%.s : %.c

	$(CC) -S $(ALL_CFLAGS) $< -o $@

# Assemble: create object files from assembler source files.

%.o : %.S

	@echo

	@echo $(MSG_ASSEMBLING) $<

	$(CC) -c $(ALL_ASFLAGS) $< -o $@

# Create preprocessed source for use in sending a bug report.

%.i : %.c

	$(CC) -E -mmcu=$(MCU) -I. $(CFLAGS) $< -o $@ 

# Target: clean project.

clean: begin clean_list end

clean_list :

	@echo

	@echo $(MSG_CLEANING)

	$(REMOVE) $(TARGET).hex

	$(REMOVE) $(TARGET).eep

	$(REMOVE) $(TARGET).cof

	$(REMOVE) $(TARGET).elf

	$(REMOVE) $(TARGET).map

	$(REMOVE) $(TARGET).sym

	$(REMOVE) $(TARGET).lss

	$(REMOVE) $(OBJ)

	$(REMOVE) $(LST)

	$(REMOVE) $(SRC:.c=.s)

	$(REMOVE) $(SRC:.c=.d)

	$(REMOVE) .dep/*

# Include the dependency files.

-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)

# Listing of phony targets.

.PHONY : all begin finish end sizebefore sizeafter gccversion \

build elf hex eep lss sym coff extcoff \

clean clean_list program debug gdb-config