arduino-0018-linux-x64
This commit is contained in:
Eve Entropia
parent
8e4748e499
commit
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/**********************************************************/
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/* Serial Bootloader for Atmel megaAVR Controllers */
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/* */
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/* tested with ATmega8, ATmega128 and ATmega168 */
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/* should work with other mega's, see code for details */
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/* */
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/* ATmegaBOOT.c */
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/* */
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/* 20070626: hacked for Arduino Diecimila (which auto- */
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/* resets when a USB connection is made to it) */
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/* by D. Mellis */
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/* 20060802: hacked for Arduino by D. Cuartielles */
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/* based on a previous hack by D. Mellis */
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/* and D. Cuartielles */
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/* */
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/* Monitor and debug functions were added to the original */
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/* code by Dr. Erik Lins, chip45.com. (See below) */
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/* */
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/* Thanks to Karl Pitrich for fixing a bootloader pin */
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/* problem and more informative LED blinking! */
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/* */
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/* For the latest version see: */
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/* http://www.chip45.com/ */
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/* */
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/* ------------------------------------------------------ */
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/* */
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/* based on stk500boot.c */
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/* Copyright (c) 2003, Jason P. Kyle */
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/* All rights reserved. */
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/* see avr1.org for original file and information */
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/* */
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/* This program is free software; you can redistribute it */
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/* and/or modify it under the terms of the GNU General */
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/* Public License as published by the Free Software */
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/* Foundation; either version 2 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* This program is distributed in the hope that it will */
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/* be useful, but WITHOUT ANY WARRANTY; without even the */
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/* implied warranty of MERCHANTABILITY or FITNESS FOR A */
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/* PARTICULAR PURPOSE. See the GNU General Public */
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/* License for more details. */
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/* */
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/* You should have received a copy of the GNU General */
|
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/* Public License along with this program; if not, write */
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/* to the Free Software Foundation, Inc., */
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/* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* */
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/* Licence can be viewed at */
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/* http://www.fsf.org/licenses/gpl.txt */
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/* */
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/* Target = Atmel AVR m128,m64,m32,m16,m8,m162,m163,m169, */
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/* m8515,m8535. ATmega161 has a very small boot block so */
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/* isn't supported. */
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/* */
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/* Tested with m168 */
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/**********************************************************/
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/* $Id$ */
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/* some includes */
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#include <inttypes.h>
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#include <avr/wdt.h>
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/* the current avr-libc eeprom functions do not support the ATmega168 */
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/* own eeprom write/read functions are used instead */
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#ifndef __AVR_ATmega168__
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#include <avr/eeprom.h>
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#endif
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/* Use the F_CPU defined in Makefile */
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/* 20060803: hacked by DojoCorp */
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/* 20070626: hacked by David A. Mellis to decrease waiting time for auto-reset */
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/* set the waiting time for the bootloader */
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/* get this from the Makefile instead */
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/* #define MAX_TIME_COUNT (F_CPU>>4) */
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/* 20070707: hacked by David A. Mellis - after this many errors give up and launch application */
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#define MAX_ERROR_COUNT 5
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/* set the UART baud rate */
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/* 20060803: hacked by DojoCorp */
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//#define BAUD_RATE 115200
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#define BAUD_RATE 19200
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/* SW_MAJOR and MINOR needs to be updated from time to time to avoid warning message from AVR Studio */
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/* never allow AVR Studio to do an update !!!! */
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#define HW_VER 0x02
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#define SW_MAJOR 0x01
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#define SW_MINOR 0x10
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/* Adjust to suit whatever pin your hardware uses to enter the bootloader */
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/* ATmega128 has two UARTS so two pins are used to enter bootloader and select UART */
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/* BL0... means UART0, BL1... means UART1 */
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#ifdef __AVR_ATmega128__
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#define BL_DDR DDRF
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#define BL_PORT PORTF
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#define BL_PIN PINF
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#define BL0 PINF7
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#define BL1 PINF6
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#else
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/* other ATmegas have only one UART, so only one pin is defined to enter bootloader */
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#define BL_DDR DDRD
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#define BL_PORT PORTD
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#define BL_PIN PIND
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#define BL PIND6
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#endif
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/* onboard LED is used to indicate, that the bootloader was entered (3x flashing) */
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/* if monitor functions are included, LED goes on after monitor was entered */
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#ifdef __AVR_ATmega128__
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/* Onboard LED is connected to pin PB7 (e.g. Crumb128, PROBOmega128, Savvy128) */
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#define LED_DDR DDRB
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#define LED_PORT PORTB
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#define LED_PIN PINB
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#define LED PINB7
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#else
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/* Onboard LED is connected to pin PB2 (e.g. Crumb8, Crumb168) */
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#define LED_DDR DDRB
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#define LED_PORT PORTB
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#define LED_PIN PINB
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/* 20060803: hacked by DojoCorp, LED pin is B5 in Arduino */
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/* #define LED PINB2 */
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#define LED PINB5
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#endif
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/* monitor functions will only be compiled when using ATmega128, due to bootblock size constraints */
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#ifdef __AVR_ATmega128__
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#define MONITOR
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#endif
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/* define various device id's */
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/* manufacturer byte is always the same */
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#define SIG1 0x1E // Yep, Atmel is the only manufacturer of AVR micros. Single source :(
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#if defined __AVR_ATmega128__
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#define SIG2 0x97
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#define SIG3 0x02
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#define PAGE_SIZE 0x80U //128 words
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#elif defined __AVR_ATmega64__
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#define SIG2 0x96
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#define SIG3 0x02
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#define PAGE_SIZE 0x80U //128 words
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#elif defined __AVR_ATmega32__
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#define SIG2 0x95
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#define SIG3 0x02
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#define PAGE_SIZE 0x40U //64 words
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#elif defined __AVR_ATmega16__
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#define SIG2 0x94
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#define SIG3 0x03
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#define PAGE_SIZE 0x40U //64 words
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#elif defined __AVR_ATmega8__
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#define SIG2 0x93
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#define SIG3 0x07
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#define PAGE_SIZE 0x20U //32 words
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#elif defined __AVR_ATmega88__
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#define SIG2 0x93
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#define SIG3 0x0a
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#define PAGE_SIZE 0x20U //32 words
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#elif defined __AVR_ATmega168__
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#define SIG2 0x94
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#define SIG3 0x06
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#define PAGE_SIZE 0x40U //64 words
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#elif defined __AVR_ATmega162__
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#define SIG2 0x94
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#define SIG3 0x04
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#define PAGE_SIZE 0x40U //64 words
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#elif defined __AVR_ATmega163__
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#define SIG2 0x94
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#define SIG3 0x02
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#define PAGE_SIZE 0x40U //64 words
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#elif defined __AVR_ATmega169__
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#define SIG2 0x94
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#define SIG3 0x05
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#define PAGE_SIZE 0x40U //64 words
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#elif defined __AVR_ATmega8515__
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#define SIG2 0x93
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#define SIG3 0x06
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#define PAGE_SIZE 0x20U //32 words
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||||
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#elif defined __AVR_ATmega8535__
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#define SIG2 0x93
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#define SIG3 0x08
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#define PAGE_SIZE 0x20U //32 words
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#endif
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/* function prototypes */
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void putch(char);
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char getch(void);
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void getNch(uint8_t);
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void byte_response(uint8_t);
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void nothing_response(void);
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char gethex(void);
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void puthex(char);
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void flash_led(uint8_t);
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/* some variables */
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union address_union {
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uint16_t word;
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uint8_t byte[2];
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} address;
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union length_union {
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uint16_t word;
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uint8_t byte[2];
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} length;
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struct flags_struct {
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unsigned eeprom : 1;
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unsigned rampz : 1;
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} flags;
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uint8_t buff[256];
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uint8_t address_high;
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uint8_t pagesz=0x80;
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uint8_t i;
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uint8_t bootuart = 0;
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uint8_t error_count = 0;
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void (*app_start)(void) = 0x0000;
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/* main program starts here */
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int main(void)
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{
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uint8_t ch,ch2;
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uint16_t w;
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asm volatile("nop\n\t");
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/* set pin direction for bootloader pin and enable pullup */
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/* for ATmega128, two pins need to be initialized */
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#ifdef __AVR_ATmega128__
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BL_DDR &= ~_BV(BL0);
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BL_DDR &= ~_BV(BL1);
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BL_PORT |= _BV(BL0);
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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 */
|
||||
|
|
@ -0,0 +1,84 @@
|
|||
# Makefile for ATmegaBOOT
|
||||
# E.Lins, 18.7.2005
|
||||
# $Id$
|
||||
|
||||
# Instructions
|
||||
#
|
||||
# To build the bootloader for the LilyPad:
|
||||
# make lily
|
||||
|
||||
|
||||
# program name should not be changed...
|
||||
PROGRAM = ATmegaBOOT_168
|
||||
|
||||
# enter the target CPU frequency
|
||||
AVR_FREQ = 8000000L
|
||||
|
||||
# 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:
|
||||
|
||||
lily: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>1' '-DNUM_LED_FLASHES=3'
|
||||
lily: $(PROGRAM).hex
|
||||
|
||||
$(PROGRAM).hex: $(PROGRAM).elf
|
||||
$(OBJCOPY) -j .text -j .data -O ihex $< $@
|
||||
|
||||
$(PROGRAM).elf: $(OBJ)
|
||||
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
|
||||
|
||||
$(OBJ):
|
||||
avr-gcc $(CFLAGS) $(LDFLAGS) -c -g -O2 -Wall -mmcu=atmega168 ATmegaBOOT.c -o ATmegaBOOT_168.o
|
||||
|
||||
%.lst: %.elf
|
||||
$(OBJDUMP) -h -S $< > $@
|
||||
|
||||
%.srec: %.elf
|
||||
$(OBJCOPY) -j .text -j .data -O srec $< $@
|
||||
|
||||
%.bin: %.elf
|
||||
$(OBJCOPY) -j .text -j .data -O binary $< $@
|
||||
|
||||
clean:
|
||||
rm -rf *.o *.elf *.lst *.map *.sym *.lss *.eep *.srec *.bin *.hex
|
||||
|
||||
install:
|
||||
avrdude -p m168 -c stk500v2 -P /dev/cu.USA19H1b1P1.1 -e -u -U lock:w:0x3f:m -U efuse:w:0x00:m -U hfuse:w:0xdd:m -U lfuse:w:0xe2:m
|
||||
avrdude -p m168 -c stk500v2 -P /dev/cu.USA19H1b1P1.1 -e -u -U flash:w:ATmegaBOOT_168.hex -U lock:w:0x0f:m
|
||||
Reference in a new issue