You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
389 lines
10 KiB
Scilab
389 lines
10 KiB
Scilab
12 years ago
|
/**********************************************************/
|
||
|
|
/* Serial Bootloader for Atmel megaAVR Controllers */
|
||
|
|
/* */
|
||
|
|
/* tested with ATmega644 and ATmega644P */
|
||
|
|
/* should work with other mega's, see code for details */
|
||
|
|
/* */
|
||
|
|
/* ATmegaBOOT.c */
|
||
|
|
/* */
|
||
|
|
/* 20090131: Added 324P support from Alex Leone */
|
||
|
|
/* Marius Kintel */
|
||
|
|
/* 20080915: applied ADABoot mods for Sanguino 644P */
|
||
|
|
/* Brian Riley */
|
||
|
|
/* 20080711: hacked for Sanguino by Zach Smith */
|
||
|
|
/* and Justin Day */
|
||
|
|
/* 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>
|
||
|
|
#include <avr/boot.h>
|
||
|
|
#include <util/delay.h>
|
||
|
|
|
||
|
|
#ifdef ADABOOT
|
||
|
|
#define NUM_LED_FLASHES 3
|
||
|
|
#define ADABOOT_VER 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/* 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 */
|
||
|
|
/* 20080711: hack by Zach Hoeken */
|
||
|
|
#define BAUD_RATE 38400
|
||
|
|
|
||
|
|
/* 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
|
||
|
|
|
||
|
|
/* 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 */
|
||
|
|
#define LED_DDR DDRB
|
||
|
|
#define LED_PORT PORTB
|
||
|
|
#define LED_PIN PINB
|
||
|
|
#define LED PINB0
|
||
|
|
|
||
|
|
/* 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_ATmega1284P__)
|
||
|
|
#define SIG2 0x97
|
||
|
|
#define SIG3 0x05
|
||
|
|
#elif defined(__AVR_ATmega644P__)
|
||
|
|
#define SIG2 0x96
|
||
|
|
#define SIG3 0x0A
|
||
|
|
#elif defined(__AVR_ATmega644__)
|
||
|
|
#define SIG2 0x96
|
||
|
|
#define SIG3 0x09
|
||
|
|
#elif defined(__AVR_ATmega324P__)
|
||
|
|
#define SIG2 0x95
|
||
|
|
#define SIG3 0x08
|
||
|
|
#endif
|
||
|
|
#define PAGE_SIZE 0x080U //128 words
|
||
|
|
#define PAGE_SIZE_BYTES 0x100U //256 bytes
|
||
|
|
|
||
|
|
/* 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 error_count = 0;
|
||
|
|
uint8_t sreg;
|
||
|
|
|
||
|
|
void (*app_start)(void) = 0x0000;
|
||
|
|
|
||
|
|
/* main program starts here */
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
uint8_t ch,ch2;
|
||
|
|
uint16_t w;
|
||
|
|
uint16_t i;
|
||
|
|
|
||
|
|
asm volatile("nop\n\t");
|
||
|
|
|
||
|
|
#ifdef ADABOOT // BBR/LF 10/8/2007 & 9/13/2008
|
||
|
|
ch = MCUSR;
|
||
|
|
MCUSR = 0;
|
||
|
|
|
||
|
|
WDTCSR |= _BV(WDCE) | _BV(WDE);
|
||
|
|
WDTCSR = 0;
|
||
|
|
|
||
|
|
// Check if the WDT was used to reset, in which case we dont bootload and skip straight to the code. woot.
|
||
|
|
if (! (ch & _BV(EXTRF))) // if its a not an external reset...
|
||
|
|
app_start(); // skip bootloader
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
//initialize our serial port.
|
||
|
|
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);
|
||
|
|
|
||
|
|
/* set LED pin as output */
|
||
|
|
LED_DDR |= _BV(LED);
|
||
|
|
|
||
|
|
/* flash onboard LED to signal entering of bootloader */
|
||
|
|
/* ADABOOT will do two series of flashes. first 4 - signifying ADABOOT */
|
||
|
|
/* then a pause and another flash series signifying ADABOOT sub-version */
|
||
|
|
|
||
|
|
|
||
|
|
flash_led(NUM_LED_FLASHES);
|
||
|
|
|
||
|
|
#ifdef ADABOOT
|
||
|
|
flash_led(ADABOOT_VER); // BBR 9/13/2008
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* forever loop */
|
||
|
|
for (;;)
|
||
|
|
{
|
||
|
|
putch('\r');
|
||
|
|
_delay_ms(500);
|
||
|
|
}
|
||
|
|
/* 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)
|
||
|
|
{
|
||
|
|
while (!(UCSR0A & _BV(UDRE0)));
|
||
|
|
UDR0 = ch;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
char getch(void)
|
||
|
|
{
|
||
|
|
uint32_t count = 0;
|
||
|
|
|
||
|
|
#ifdef ADABOOT
|
||
|
|
LED_PORT &= ~_BV(LED); // toggle LED to show activity - BBR/LF 10/3/2007 & 9/13/2008
|
||
|
|
#endif
|
||
|
|
|
||
|
|
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();
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef ADABOOT
|
||
|
|
LED_PORT |= _BV(LED); // toggle LED to show activity - BBR/LF 10/3/2007 & 9/13/2008
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return UDR0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void getNch(uint8_t count)
|
||
|
|
{
|
||
|
|
uint8_t i;
|
||
|
|
for(i=0;i<count;i++)
|
||
|
|
{
|
||
|
|
while(!(UCSR0A & _BV(RXC0)));
|
||
|
|
UDR0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
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();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef ADABOOT
|
||
|
|
|
||
|
|
void flash_led(uint8_t count)
|
||
|
|
{
|
||
|
|
/* flash onboard LED count 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 = ADABOOT;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int8_t i;
|
||
|
|
for (i = 0; i < count; ++i) {
|
||
|
|
LED_PORT |= _BV(LED); // LED on
|
||
|
|
for(l = 0; l < (F_CPU / 1000); ++l); // delay NGvalue was 1000 for both loops - BBR
|
||
|
|
LED_PORT &= ~_BV(LED); // LED off
|
||
|
|
for(l = 0; l < (F_CPU / 250); ++l); // delay asymmteric for ADA BOOT BBR
|
||
|
|
}
|
||
|
|
|
||
|
|
for(l = 0; l < (F_CPU / 100); ++l); // pause ADA BOOT BBR
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
int8_t i;
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/* end of file ATmegaBOOT.c */
|