Moving bootloaders into the hardware/bootloaders directory.

4 files changed, 1305 insertions, 0 deletions

diff --git a/bootloaders/atmega168/ATmegaBOOT_168.c b/bootloaders/atmega168/ATmegaBOOT_168.c
new file mode 100755
index 0000000..c542af1
--- /dev/null
+++ b/bootloaders/atmega168/ATmegaBOOT_168.c
@@ -0,0 +1,979 @@
+/**********************************************************/

+/* Serial Bootloader for Atmel megaAVR Controllers        */

+/*                                                        */

+/* tested with ATmega8, ATmega128 and ATmega168           */

+/* should work with other mega's, see code for details    */

+/*                                                        */

+/* ATmegaBOOT.c                                           */

+/*                                                        */

+/* 20070626: hacked for Arduino Diecimila (which auto-    */

+/*           resets when a USB connection is made to it)  */

+/*           by D. Mellis                                 */

+/* 20060802: hacked for Arduino by D. Cuartielles         */

+/*           based on a previous hack by D. Mellis        */

+/*           and D. Cuartielles                           */

+/*                                                        */

+/* Monitor and debug functions were added to the original */

+/* code by Dr. Erik Lins, chip45.com. (See below)         */

+/*                                                        */

+/* Thanks to Karl Pitrich for fixing a bootloader pin     */

+/* problem and more informative LED blinking!             */

+/*                                                        */

+/* For the latest version see:                            */

+/* http://www.chip45.com/                                 */

+/*                                                        */

+/* ------------------------------------------------------ */

+/*                                                        */

+/* based on stk500boot.c                                  */

+/* Copyright (c) 2003, Jason P. Kyle                      */

+/* All rights reserved.                                   */

+/* see avr1.org for original file and information         */

+/*                                                        */

+/* 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        */

+/* (at your option) 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.                              */

+/*                                                        */

+/* You should have received a copy of the GNU General     */

+/* Public License along with this program; if not, write  */

+/* to the Free Software Foundation, Inc.,                 */

+/* 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA */

+/*                                                        */

+/* Licence can be viewed at                               */

+/* http://www.fsf.org/licenses/gpl.txt                    */

+/*                                                        */

+/* Target = Atmel AVR m128,m64,m32,m16,m8,m162,m163,m169, */

+/* m8515,m8535. ATmega161 has a very small boot block so  */

+/* isn't supported.                                       */

+/*                                                        */

+/* Tested with m168                                       */

+/**********************************************************/

+

+/* $Id$ */

+

+

+/* some includes */

+#include <inttypes.h>

+#include <avr/io.h>

+#include <avr/pgmspace.h>

+#include <avr/interrupt.h>

+#include <avr/wdt.h>

+

+

+/* the current avr-libc eeprom functions do not support the ATmega168 */

+/* own eeprom write/read functions are used instead */

+#ifndef __AVR_ATmega168__

+#include <avr/eeprom.h>

+#endif

+

+/* Use the F_CPU defined in Makefile */

+

+/* 20060803: hacked by DojoCorp */

+/* 20070626: hacked by David A. Mellis to decrease waiting time for auto-reset */

+/* set the waiting time for the bootloader */

+/* get this from the Makefile instead */

+/* #define MAX_TIME_COUNT (F_CPU>>4) */

+

+/* 20070707: hacked by David A. Mellis - after this many errors give up and launch application */

+#define MAX_ERROR_COUNT 5

+

+/* set the UART baud rate */

+/* 20060803: hacked by DojoCorp */

+//#define BAUD_RATE   115200

+#define BAUD_RATE   19200

+

+

+/* SW_MAJOR and MINOR needs to be updated from time to time to avoid warning message from AVR Studio */

+/* never allow AVR Studio to do an update !!!! */

+#define HW_VER	 0x02

+#define SW_MAJOR 0x01

+#define SW_MINOR 0x10

+

+

+/* Adjust to suit whatever pin your hardware uses to enter the bootloader */

+/* ATmega128 has two UARTS so two pins are used to enter bootloader and select UART */

+/* BL0... means UART0, BL1... means UART1 */

+#ifdef __AVR_ATmega128__

+#define BL_DDR  DDRF

+#define BL_PORT PORTF

+#define BL_PIN  PINF

+#define BL0     PINF7

+#define BL1     PINF6

+#else

+/* other ATmegas have only one UART, so only one pin is defined to enter bootloader */

+#define BL_DDR  DDRD

+#define BL_PORT PORTD

+#define BL_PIN  PIND

+#define BL      PIND6

+#endif

+

+

+/* onboard LED is used to indicate, that the bootloader was entered (3x flashing) */

+/* if monitor functions are included, LED goes on after monitor was entered */

+#ifdef __AVR_ATmega128__

+/* Onboard LED is connected to pin PB7 (e.g. Crumb128, PROBOmega128, Savvy128) */

+#define LED_DDR  DDRB

+#define LED_PORT PORTB

+#define LED_PIN  PINB

+#define LED      PINB7

+#else

+/* Onboard LED is connected to pin PB2 (e.g. Crumb8, Crumb168) */

+#define LED_DDR  DDRB

+#define LED_PORT PORTB

+#define LED_PIN  PINB

+/* 20060803: hacked by DojoCorp, LED pin is B5 in Arduino */

+/* #define LED      PINB2 */

+#define LED      PINB5

+#endif

+

+

+/* monitor functions will only be compiled when using ATmega128, due to bootblock size constraints */

+#ifdef __AVR_ATmega128__

+#define MONITOR

+#endif

+

+

+/* define various device id's */

+/* manufacturer byte is always the same */

+#define SIG1	0x1E	// Yep, Atmel is the only manufacturer of AVR micros.  Single source :(

+

+#if defined __AVR_ATmega128__

+#define SIG2	0x97

+#define SIG3	0x02

+#define PAGE_SIZE	0x80U	//128 words

+

+#elif defined __AVR_ATmega64__

+#define SIG2	0x96

+#define SIG3	0x02

+#define PAGE_SIZE	0x80U	//128 words

+

+#elif defined __AVR_ATmega32__

+#define SIG2	0x95

+#define SIG3	0x02

+#define PAGE_SIZE	0x40U	//64 words

+

+#elif defined __AVR_ATmega16__

+#define SIG2	0x94

+#define SIG3	0x03

+#define PAGE_SIZE	0x40U	//64 words

+

+#elif defined __AVR_ATmega8__

+#define SIG2	0x93

+#define SIG3	0x07

+#define PAGE_SIZE	0x20U	//32 words

+

+#elif defined __AVR_ATmega88__

+#define SIG2	0x93

+#define SIG3	0x0a

+#define PAGE_SIZE	0x20U	//32 words

+

+#elif defined __AVR_ATmega168__

+#define SIG2	0x94

+#define SIG3	0x06

+#define PAGE_SIZE	0x40U	//64 words

+

+#elif defined __AVR_ATmega162__

+#define SIG2	0x94

+#define SIG3	0x04

+#define PAGE_SIZE	0x40U	//64 words

+

+#elif defined __AVR_ATmega163__

+#define SIG2	0x94

+#define SIG3	0x02

+#define PAGE_SIZE	0x40U	//64 words

+

+#elif defined __AVR_ATmega169__

+#define SIG2	0x94

+#define SIG3	0x05

+#define PAGE_SIZE	0x40U	//64 words

+

+#elif defined __AVR_ATmega8515__

+#define SIG2	0x93

+#define SIG3	0x06

+#define PAGE_SIZE	0x20U	//32 words

+

+#elif defined __AVR_ATmega8535__

+#define SIG2	0x93

+#define SIG3	0x08

+#define PAGE_SIZE	0x20U	//32 words

+#endif

+

+

+/* function prototypes */

+void putch(char);

+char getch(void);

+void getNch(uint8_t);

+void byte_response(uint8_t);

+void nothing_response(void);

+char gethex(void);

+void puthex(char);

+void flash_led(uint8_t);

+

+/* some variables */

+union address_union {

+    uint16_t word;

+    uint8_t  byte[2];

+} address;

+

+union length_union {

+    uint16_t word;

+    uint8_t  byte[2];

+} length;

+

+struct flags_struct {

+    unsigned eeprom : 1;

+    unsigned rampz  : 1;

+} flags;

+

+uint8_t buff[256];

+uint8_t address_high;

+

+uint8_t pagesz=0x80;

+

+uint8_t i;

+uint8_t bootuart = 0;

+

+uint8_t error_count = 0;

+

+void (*app_start)(void) = 0x0000;

+

+

+/* main program starts here */

+int main(void)

+{

+    uint8_t ch,ch2;

+    uint16_t w;

+

+    asm volatile("nop\n\t");

+

+    /* set pin direction for bootloader pin and enable pullup */

+    /* for ATmega128, two pins need to be initialized */

+#ifdef __AVR_ATmega128__

+    BL_DDR &= ~_BV(BL0);

+    BL_DDR &= ~_BV(BL1);

+    BL_PORT |= _BV(BL0);

+    BL_PORT |= _BV(BL1);

+#else

+    /* We run the bootloader regardless of the state of this pin.  Thus, don't

+    put it in a different state than the other pins.  --DAM, 070709

+    BL_DDR &= ~_BV(BL);

+    BL_PORT |= _BV(BL);

+    */

+#endif

+

+

+#ifdef __AVR_ATmega128__

+    /* check which UART should be used for booting */

+    if(bit_is_clear(BL_PIN, BL0)) {

+      bootuart = 1;

+    }

+    else if(bit_is_clear(BL_PIN, BL1)) {

+      bootuart = 2;

+    }

+#endif

+

+    /* check if flash is programmed already, if not start bootloader anyway */

+    if(pgm_read_byte_near(0x0000) != 0xFF) {

+

+#ifdef __AVR_ATmega128__

+	/* no UART was selected, start application */

+	if(!bootuart) {

+          app_start();

+	}

+#else

+	/* check if bootloader pin is set low */

+	/* we don't start this part neither for the m8, nor m168 */

+	//if(bit_is_set(BL_PIN, BL)) {

+    //      app_start();

+    //    }

+#endif

+    }

+

+#ifdef __AVR_ATmega128__    

+    /* no bootuart was selected, default to uart 0 */

+    if(!bootuart) {

+      bootuart = 1;

+    }

+#endif

+

+

+    /* initialize UART(s) depending on CPU defined */

+#ifdef __AVR_ATmega128__

+    if(bootuart == 1) {

+	UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);

+	UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;

+	UCSR0A = 0x00;

+	UCSR0C = 0x06;

+	UCSR0B = _BV(TXEN0)|_BV(RXEN0);

+    }

+    if(bootuart == 2) {

+	UBRR1L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);

+	UBRR1H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;

+	UCSR1A = 0x00;

+	UCSR1C = 0x06;

+	UCSR1B = _BV(TXEN1)|_BV(RXEN1);

+    }

+#elif defined __AVR_ATmega163__

+    UBRR = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);

+    UBRRHI = (F_CPU/(BAUD_RATE*16L)-1) >> 8;

+    UCSRA = 0x00;

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

+#elif defined __AVR_ATmega168__

+    UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);

+    UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;

+    UCSR0B = (1<<RXEN0) | (1<<TXEN0);

+    UCSR0C = (1<<UCSZ00) | (1<<UCSZ01);

+

+    /* Enable internal pull-up resistor on pin D0 (RX), in order

+    to supress line noise that prevents the bootloader from

+    timing out (DAM: 20070509) */

+    DDRD &= ~_BV(PIND0);

+    PORTD |= _BV(PIND0);

+#elif defined __AVR_ATmega8__

+  /* m8 */

+  UBRRH = (((F_CPU/BAUD_RATE)/16)-1)>>8; 	// set baud rate

+  UBRRL = (((F_CPU/BAUD_RATE)/16)-1);

+  UCSRB = (1<<RXEN)|(1<<TXEN);  // enable Rx & Tx

+  UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);  // config USART; 8N1

+#else

+    /* m16,m32,m169,m8515,m8535 */

+    UBRRL = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);

+    UBRRH = (F_CPU/(BAUD_RATE*16L)-1) >> 8;

+    UCSRA = 0x00;

+    UCSRC = 0x06;

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

+#endif

+

+    /* set LED pin as output */

+    LED_DDR |= _BV(LED);

+

+

+    /* flash onboard LED to signal entering of bootloader */

+#ifdef __AVR_ATmega128__

+    // 4x for UART0, 5x for UART1

+    flash_led(NUM_LED_FLASHES + bootuart);

+#else

+    flash_led(NUM_LED_FLASHES);

+#endif

+    

+    /* 20050803: by DojoCorp, this is one of the parts provoking the

+                 system to stop listening, cancelled from the original */

+    //putch('\0');

+

+

+    /* forever loop */

+    for (;;) {

+

+	/* get character from UART */

+	ch = getch();

+

+	/* A bunch of if...else if... gives smaller code than switch...case ! */

+

+	/* Hello is anyone home ? */ 

+	if(ch=='0') {

+	    nothing_response();

+	}

+

+

+	/* Request programmer ID */

+	/* Not using PROGMEM string due to boot block in m128 being beyond 64kB boundry  */

+	/* Would need to selectively manipulate RAMPZ, and it's only 9 characters anyway so who cares.  */

+	else if(ch=='1') {

+	    if (getch() == ' ') {

+		putch(0x14);

+		putch('A');

+		putch('V');

+		putch('R');

+		putch(' ');

+		putch('I');

+		putch('S');

+		putch('P');

+		putch(0x10);

+	    } else {

+		if (++error_count == MAX_ERROR_COUNT)

+		    app_start();

+	    }

+	}

+

+

+	/* AVR ISP/STK500 board commands  DON'T CARE so default nothing_response */

+	else if(ch=='@') {

+	    ch2 = getch();

+	    if (ch2>0x85) getch();

+	    nothing_response();

+	}

+

+

+	/* AVR ISP/STK500 board requests */

+	else if(ch=='A') {

+	    ch2 = getch();

+	    if(ch2==0x80) byte_response(HW_VER);		// Hardware version

+	    else if(ch2==0x81) byte_response(SW_MAJOR);	// Software major version

+	    else if(ch2==0x82) byte_response(SW_MINOR);	// Software minor version

+	    else if(ch2==0x98) byte_response(0x03);		// Unknown but seems to be required by avr studio 3.56

+	    else byte_response(0x00);				// Covers various unnecessary responses we don't care about

+	}

+

+

+	/* Device Parameters  DON'T CARE, DEVICE IS FIXED  */

+	else if(ch=='B') {

+	    getNch(20);

+	    nothing_response();

+	}

+

+

+	/* Parallel programming stuff  DON'T CARE  */

+	else if(ch=='E') {

+	    getNch(5);

+	    nothing_response();

+	}

+

+

+	/* Enter programming mode  */

+	else if(ch=='P') {

+	    nothing_response();

+	}

+

+

+	/* Leave programming mode  */

+	else if(ch=='Q') {

+	    nothing_response();

+	}

+

+

+	/* Erase device, don't care as we will erase one page at a time anyway.  */

+	else if(ch=='R') {

+	    nothing_response();

+	}

+

+

+	/* Set address, little endian. EEPROM in bytes, FLASH in words  */

+	/* Perhaps extra address bytes may be added in future to support > 128kB FLASH.  */

+	/* This might explain why little endian was used here, big endian used everywhere else.  */

+	else if(ch=='U') {

+	    address.byte[0] = getch();

+	    address.byte[1] = getch();

+	    nothing_response();

+	}

+

+

+	/* Universal SPI programming command, disabled.  Would be used for fuses and lock bits.  */

+	else if(ch=='V') {

+	    getNch(4);

+	    byte_response(0x00);

+	}

+

+

+	/* Write memory, length is big endian and is in bytes  */

+	else if(ch=='d') {

+	    length.byte[1] = getch();

+	    length.byte[0] = getch();

+	    flags.eeprom = 0;

+	    if (getch() == 'E') flags.eeprom = 1;

+	    for (w=0;w<length.word;w++) {

+		buff[w] = getch();	                        // Store data in buffer, can't keep up with serial data stream whilst programming pages

+	    }

+	    if (getch() == ' ') {

+		if (flags.eeprom) {		                //Write to EEPROM one byte at a time

+		    for(w=0;w<length.word;w++) {

+#ifdef __AVR_ATmega168__

+			while(EECR & (1<<EEPE));

+			EEAR = (uint16_t)(void *)address.word;

+			EEDR = buff[w];

+			EECR |= (1<<EEMPE);

+			EECR |= (1<<EEPE);

+#else

+			eeprom_write_byte((void *)address.word,buff[w]);

+#endif

+			address.word++;

+		    }			

+		}

+		else {					        //Write to FLASH one page at a time

+		    if (address.byte[1]>127) address_high = 0x01;	//Only possible with m128, m256 will need 3rd address byte. FIXME

+		    else address_high = 0x00;

+#ifdef __AVR_ATmega128__

+		    RAMPZ = address_high;

+#endif

+		    address.word = address.word << 1;	        //address * 2 -> byte location

+		    /* if ((length.byte[0] & 0x01) == 0x01) length.word++;	//Even up an odd number of bytes */

+		    if ((length.byte[0] & 0x01)) length.word++;	//Even up an odd number of bytes

+		    cli();					//Disable interrupts, just to be sure

+			// HACKME: EEPE used to be EEWE

+		    while(bit_is_set(EECR,EEPE));			//Wait for previous EEPROM writes to complete

+		    asm volatile(

+				 "clr	r17		\n\t"	//page_word_count

+				 "lds	r30,address	\n\t"	//Address of FLASH location (in bytes)

+				 "lds	r31,address+1	\n\t"

+				 "ldi	r28,lo8(buff)	\n\t"	//Start of buffer array in RAM

+				 "ldi	r29,hi8(buff)	\n\t"

+				 "lds	r24,length	\n\t"	//Length of data to be written (in bytes)

+				 "lds	r25,length+1	\n\t"

+				 "length_loop:		\n\t"	//Main loop, repeat for number of words in block							 							 

+				 "cpi	r17,0x00	\n\t"	//If page_word_count=0 then erase page

+				 "brne	no_page_erase	\n\t"						 

+				 "wait_spm1:		\n\t"

+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete

+				 "andi	r16,1           \n\t"

+				 "cpi	r16,1           \n\t"

+				 "breq	wait_spm1       \n\t"

+				 "ldi	r16,0x03	\n\t"	//Erase page pointed to by Z

+				 "sts	%0,r16		\n\t"

+				 "spm			\n\t"							 

+#ifdef __AVR_ATmega163__

+				 ".word 0xFFFF		\n\t"

+				 "nop			\n\t"

+#endif

+				 "wait_spm2:		\n\t"

+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete

+				 "andi	r16,1           \n\t"

+				 "cpi	r16,1           \n\t"

+				 "breq	wait_spm2       \n\t"									 

+

+				 "ldi	r16,0x11	\n\t"	//Re-enable RWW section

+				 "sts	%0,r16		\n\t"						 			 

+				 "spm			\n\t"

+#ifdef __AVR_ATmega163__

+				 ".word 0xFFFF		\n\t"

+				 "nop			\n\t"

+#endif

+				 "no_page_erase:		\n\t"							 

+				 "ld	r0,Y+		\n\t"	//Write 2 bytes into page buffer

+				 "ld	r1,Y+		\n\t"							 

+							 

+				 "wait_spm3:		\n\t"

+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete

+				 "andi	r16,1           \n\t"

+				 "cpi	r16,1           \n\t"

+				 "breq	wait_spm3       \n\t"

+				 "ldi	r16,0x01	\n\t"	//Load r0,r1 into FLASH page buffer

+				 "sts	%0,r16		\n\t"

+				 "spm			\n\t"

+							 

+				 "inc	r17		\n\t"	//page_word_count++

+				 "cpi r17,%1	        \n\t"

+				 "brlo	same_page	\n\t"	//Still same page in FLASH

+				 "write_page:		\n\t"

+				 "clr	r17		\n\t"	//New page, write current one first

+				 "wait_spm4:		\n\t"

+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete

+				 "andi	r16,1           \n\t"

+				 "cpi	r16,1           \n\t"

+				 "breq	wait_spm4       \n\t"

+#ifdef __AVR_ATmega163__

+				 "andi	r30,0x80	\n\t"	// m163 requires Z6:Z1 to be zero during page write

+#endif							 							 

+				 "ldi	r16,0x05	\n\t"	//Write page pointed to by Z

+				 "sts	%0,r16		\n\t"

+				 "spm			\n\t"

+#ifdef __AVR_ATmega163__

+				 ".word 0xFFFF		\n\t"

+				 "nop			\n\t"

+				 "ori	r30,0x7E	\n\t"	// recover Z6:Z1 state after page write (had to be zero during write)

+#endif

+				 "wait_spm5:		\n\t"

+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete

+				 "andi	r16,1           \n\t"

+				 "cpi	r16,1           \n\t"

+				 "breq	wait_spm5       \n\t"									 

+				 "ldi	r16,0x11	\n\t"	//Re-enable RWW section

+				 "sts	%0,r16		\n\t"						 			 

+				 "spm			\n\t"					 		 

+#ifdef __AVR_ATmega163__

+				 ".word 0xFFFF		\n\t"

+				 "nop			\n\t"

+#endif

+				 "same_page:		\n\t"							 

+				 "adiw	r30,2		\n\t"	//Next word in FLASH

+				 "sbiw	r24,2		\n\t"	//length-2

+				 "breq	final_write	\n\t"	//Finished

+				 "rjmp	length_loop	\n\t"

+				 "final_write:		\n\t"

+				 "cpi	r17,0		\n\t"

+				 "breq	block_done	\n\t"

+				 "adiw	r24,2		\n\t"	//length+2, fool above check on length after short page write

+				 "rjmp	write_page	\n\t"

+				 "block_done:		\n\t"

+				 "clr	__zero_reg__	\n\t"	//restore zero register

+#if defined __AVR_ATmega168__

+				 : "=m" (SPMCSR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31"

+#else

+				 : "=m" (SPMCR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31"

+#endif

+				 );

+		    /* Should really add a wait for RWW section to be enabled, don't actually need it since we never */

+		    /* exit the bootloader without a power cycle anyhow */

+		}

+		putch(0x14);

+		putch(0x10);

+	    } else {

+		if (++error_count == MAX_ERROR_COUNT)

+		    app_start();

+	    }		

+	}

+    

+

+        /* Read memory block mode, length is big endian.  */

+        else if(ch=='t') {

+	    length.byte[1] = getch();

+	    length.byte[0] = getch();

+#if defined __AVR_ATmega128__

+	    if (address.word>0x7FFF) flags.rampz = 1;		// No go with m256, FIXME

+	    else flags.rampz = 0;

+#endif

+	    if (getch() == 'E') flags.eeprom = 1;

+	    else {

+		flags.eeprom = 0;

+		address.word = address.word << 1;	        // address * 2 -> byte location

+	    }

+	    if (getch() == ' ') {		                // Command terminator

+		putch(0x14);

+		for (w=0;w < length.word;w++) {		        // Can handle odd and even lengths okay

+		    if (flags.eeprom) {	                        // Byte access EEPROM read

+#ifdef __AVR_ATmega168__

+			while(EECR & (1<<EEPE));

+			EEAR = (uint16_t)(void *)address.word;

+			EECR |= (1<<EERE);

+			putch(EEDR);

+#else

+			putch(eeprom_read_byte((void *)address.word));

+#endif

+			address.word++;

+		    }

+		    else {

+

+			if (!flags.rampz) putch(pgm_read_byte_near(address.word));

+#if defined __AVR_ATmega128__

+			else putch(pgm_read_byte_far(address.word + 0x10000));

+			// Hmmmm, yuck  FIXME when m256 arrvies

+#endif

+			address.word++;

+		    }

+		}

+		putch(0x10);

+	    }

+	}

+

+

+        /* Get device signature bytes  */

+        else if(ch=='u') {

+	    if (getch() == ' ') {

+		putch(0x14);

+		putch(SIG1);

+		putch(SIG2);

+		putch(SIG3);

+		putch(0x10);

+	    } else {

+		if (++error_count == MAX_ERROR_COUNT)

+		    app_start();

+	    }

+	}

+

+

+        /* Read oscillator calibration byte */

+        else if(ch=='v') {

+	    byte_response(0x00);

+	}

+

+

+#ifdef MONITOR

+

+	/* here come the extended monitor commands by Erik Lins */

+

+	/* check for three times exclamation mark pressed */

+	else if(ch=='!') {

+	    ch = getch();

+	    if(ch=='!') {

+		ch = getch();

+		if(ch=='!') {

+

+#ifdef __AVR_ATmega128__

+		    uint16_t extaddr;

+#endif

+		    uint8_t addrl, addrh;

+

+#ifdef CRUMB128

+		    PGM_P welcome = {"ATmegaBOOT / Crumb128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};

+#elif defined PROBOMEGA128

+		    PGM_P welcome = {"ATmegaBOOT / PROBOmega128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};

+#elif defined SAVVY128

+		    PGM_P welcome = {"ATmegaBOOT / Savvy128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};

+#endif

+

+		    /* turn on LED */

+		    LED_DDR |= _BV(LED);

+		    LED_PORT &= ~_BV(LED);

+

+		    /* print a welcome message and command overview */

+		    for(i=0; welcome[i] != '\0'; ++i) {

+			putch(welcome[i]);

+		    }

+

+		    /* test for valid commands */

+		    for(;;) {

+			putch('\n');

+			putch('\r');

+			putch(':');

+			putch(' ');

+

+			ch = getch();

+			putch(ch);

+

+			/* toggle LED */

+			if(ch == 't') {

+			    if(bit_is_set(LED_PIN,LED)) {

+				LED_PORT &= ~_BV(LED);

+				putch('1');

+			    } else {

+				LED_PORT |= _BV(LED);

+				putch('0');

+			    }

+

+			} 

+

+			/* read byte from address */

+			else if(ch == 'r') {

+			    ch = getch(); putch(ch);

+			    addrh = gethex();

+			    addrl = gethex();

+			    putch('=');

+			    ch = *(uint8_t *)((addrh << 8) + addrl);

+			    puthex(ch);

+			}

+

+			/* write a byte to address  */

+			else if(ch == 'w') {

+			    ch = getch(); putch(ch);

+			    addrh = gethex();

+			    addrl = gethex();

+			    ch = getch(); putch(ch);

+			    ch = gethex();

+			    *(uint8_t *)((addrh << 8) + addrl) = ch;

+

+			}

+

+			/* read from uart and echo back */

+			else if(ch == 'u') {

+			    for(;;) {

+				putch(getch());

+			    }

+			}

+#ifdef __AVR_ATmega128__

+			/* external bus loop  */

+			else if(ch == 'b') {

+			    putch('b');

+			    putch('u');

+			    putch('s');

+			    MCUCR = 0x80;

+			    XMCRA = 0;

+			    XMCRB = 0;

+			    extaddr = 0x1100;

+			    for(;;) {

+				ch = *(volatile uint8_t *)extaddr;

+				if(++extaddr == 0) {

+				    extaddr = 0x1100;

+				}

+			    }

+			}

+#endif

+

+			else if(ch == 'j') {

+			    app_start();

+			}

+

+		    }

+		    /* end of monitor functions */

+

+		}

+	    }

+	}

+	/* end of monitor */

+#endif

+	else if (++error_count == MAX_ERROR_COUNT) {

+	    app_start();

+	}

+    }

+    /* end of forever loop */

+

+}

+

+

+char gethex(void) {

+    char ah,al;

+

+    ah = getch(); putch(ah);

+    al = getch(); putch(al);

+    if(ah >= 'a') {

+	ah = ah - 'a' + 0x0a;

+    } else if(ah >= '0') {

+	ah -= '0';

+    }

+    if(al >= 'a') {

+	al = al - 'a' + 0x0a;

+    } else if(al >= '0') {

+	al -= '0';

+    }

+    return (ah << 4) + al;

+}

+

+

+void puthex(char ch) {

+    char ah,al;

+

+    ah = (ch & 0xf0) >> 4;

+    if(ah >= 0x0a) {

+	ah = ah - 0x0a + 'a';

+    } else {

+	ah += '0';

+    }

+    al = (ch & 0x0f);

+    if(al >= 0x0a) {

+	al = al - 0x0a + 'a';

+    } else {

+	al += '0';

+    }

+    putch(ah);

+    putch(al);

+}

+

+

+void putch(char ch)

+{

+#ifdef __AVR_ATmega128__

+    if(bootuart == 1) {

+	while (!(UCSR0A & _BV(UDRE0)));

+	UDR0 = ch;

+    }

+    else if (bootuart == 2) {

+	while (!(UCSR1A & _BV(UDRE1)));

+	UDR1 = ch;

+    }

+#elif defined __AVR_ATmega168__

+    while (!(UCSR0A & _BV(UDRE0)));

+    UDR0 = ch;

+#else

+    /* m8,16,32,169,8515,8535,163 */

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

+    UDR = ch;

+#endif

+}

+

+

+char getch(void)

+{

+#ifdef __AVR_ATmega128__

+    if(bootuart == 1) {

+	while(!(UCSR0A & _BV(RXC0)));

+	return UDR0;

+    }

+    else if(bootuart == 2) {

+	while(!(UCSR1A & _BV(RXC1)));

+	return UDR1;

+    }

+    return 0;

+#elif defined __AVR_ATmega168__

+    uint32_t count = 0;

+    while(!(UCSR0A & _BV(RXC0))){

+    	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               

+    	/* HACKME:: here is a good place to count times*/

+    	count++;

+    	if (count > MAX_TIME_COUNT)

+    		app_start();

+     }

+    return UDR0;

+#else

+    /* m8,16,32,169,8515,8535,163 */

+    uint32_t count = 0;

+    while(!(UCSRA & _BV(RXC))){

+    	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               

+    	/* HACKME:: here is a good place to count times*/

+    	count++;

+    	if (count > MAX_TIME_COUNT)

+    		app_start();

+     }

+    return UDR;

+#endif

+}

+

+

+void getNch(uint8_t count)

+{

+    uint8_t i;

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

+#ifdef __AVR_ATmega128__

+	if(bootuart == 1) {

+	    while(!(UCSR0A & _BV(RXC0)));

+	    UDR0;

+	} 

+	else if(bootuart == 2) {

+	    while(!(UCSR1A & _BV(RXC1)));

+	    UDR1;

+	}

+#elif defined __AVR_ATmega168__

+	while(!(UCSR0A & _BV(RXC0)));

+	UDR0;

+#else

+	/* m8,16,32,169,8515,8535,163 */

+   	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               

+	//while(!(UCSRA & _BV(RXC)));

+	//UDR;

+    uint8_t i;

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

+    	getch(); // need to handle time out

+    }

+#endif		

+    }

+}

+

+

+void byte_response(uint8_t val)

+{

+    if (getch() == ' ') {

+	putch(0x14);

+	putch(val);

+	putch(0x10);

+    } else {

+	if (++error_count == MAX_ERROR_COUNT)

+	    app_start();

+    }

+}

+

+

+void nothing_response(void)

+{

+    if (getch() == ' ') {

+	putch(0x14);

+	putch(0x10);

+    } else {

+	if (++error_count == MAX_ERROR_COUNT)

+	    app_start();

+    }

+}

+

+void flash_led(uint8_t count)

+{

+    /* flash onboard LED three times to signal entering of bootloader */

+	/* l needs to be volatile or the delay loops below might get

+	optimized away if compiling with optimizations (DAM). */

+    volatile uint32_t l;

+

+    if (count == 0) {

+      count = 3;

+    }

+    

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

+	LED_PORT |= _BV(LED);

+	for(l = 0; l < (F_CPU / 1000); ++l);

+	LED_PORT &= ~_BV(LED);

+	for(l = 0; l < (F_CPU / 1000); ++l);

+    }

+}

+

+

+/* end of file ATmegaBOOT.c */

diff --git a/bootloaders/atmega168/ATmegaBOOT_168_diecimila.hex b/bootloaders/atmega168/ATmegaBOOT_168_diecimila.hex
new file mode 100644
index 0000000..26bf3e5
--- /dev/null
+++ b/bootloaders/atmega168/ATmegaBOOT_168_diecimila.hex
@@ -0,0 +1,117 @@
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diff --git a/bootloaders/atmega168/ATmegaBOOT_168_ng.hex b/bootloaders/atmega168/ATmegaBOOT_168_ng.hex
new file mode 100644
index 0000000..0cb6879
--- /dev/null
+++ b/bootloaders/atmega168/ATmegaBOOT_168_ng.hex
@@ -0,0 +1,117 @@
+:103800000C94341C0C944F1C0C944F1C0C944F1CA7

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diff --git a/bootloaders/atmega168/Makefile b/bootloaders/atmega168/Makefile
new file mode 100755
index 0000000..669879b
--- /dev/null
+++ b/bootloaders/atmega168/Makefile
@@ -0,0 +1,92 @@
+# Makefile for ATmegaBOOT
+# E.Lins, 18.7.2005
+# $Id$
+
+# Instructions
+#
+# To build the bootloader for the Diecimila:
+# make diecimila
+#
+# To build the bootloader for the NG/Mini:
+# make ng
+#
+# To burn the bootloader:
+# make TARGET=diecimila isp
+# make TARGET=ng isp
+
+# program name should not be changed...
+PROGRAM    = ATmegaBOOT_168
+
+# enter the target CPU frequency
+AVR_FREQ   = 16000000L
+
+# enter the parameters for the avrdude isp tool
+ISPTOOL	   = stk500v2
+ISPPORT	   = usb
+ISPSPEED   = -b 115200
+
+MCU_TARGET = atmega168
+LDSECTION  = --section-start=.text=0x3800
+
+# the efuse should really be 0xf8; since, however, only the lower
+# three bits of that byte are used on the atmega168, avrdude gets
+# confused if you specify 1's for the higher bits, see:
+# http://tinker.it/now/2007/02/24/the-tale-of-avrdude-atmega168-and-extended-bits-fuses/
+#
+# similarly, the lock bits should be 0xff instead of 0x3f (to
+# unlock the bootloader section) and 0xcf instead of 0x0f (to
+# lock it), but since the high two bits of the lock byte are
+# unused, avrdude would get confused.
+ISPFUSES    = avrdude -c $(ISPTOOL) -p m168 -P $(ISPPORT) $(ISPSPEED) -e -u -U lock:w:0x3f:m -U efuse:w:0x00:m -U hfuse:w:0xdd:m -U lfuse:w:0xff:m
+ISPFLASH    = avrdude -c $(ISPTOOL) -p m168 -P $(ISPPORT) $(ISPSPEED) -U flash:w:$(PROGRAM)_$(TARGET).hex -U lock:w:0x0f:m
+
+
+OBJ        = $(PROGRAM).o
+OPTIMIZE   = -O2
+
+DEFS       = 
+LIBS       =
+
+CC         = avr-gcc
+
+
+# Override is only needed by avr-lib build system.
+
+override CFLAGS        = -g -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) -DF_CPU=$(AVR_FREQ) $(DEFS)
+override LDFLAGS       = -Wl,$(LDSECTION)
+#override LDFLAGS       = -Wl,-Map,$(PROGRAM).map,$(LDSECTION)
+
+OBJCOPY        = avr-objcopy
+OBJDUMP        = avr-objdump
+
+all:
+
+diecimila: TARGET = diecimila
+diecimila: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=1'
+diecimila: $(PROGRAM)_diecimila.hex
+
+ng: TARGET = ng
+ng: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>1' '-DNUM_LED_FLASHES=3'
+ng: $(PROGRAM)_ng.hex
+
+isp: $(PROGRAM)_$(TARGET).hex
+	$(ISPFUSES)
+	$(ISPFLASH)
+
+%.elf: $(OBJ)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
+
+clean:
+	rm -rf *.o *.elf *.lst *.map *.sym *.lss *.eep *.srec *.bin *.hex
+
+%.lst: %.elf
+	$(OBJDUMP) -h -S $< > $@
+
+%.hex: %.elf
+	$(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.srec: %.elf
+	$(OBJCOPY) -j .text -j .data -O srec $< $@
+
+%.bin: %.elf
+	$(OBJCOPY) -j .text -j .data -O binary $< $@