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@ -1,22 +1,56 @@ |
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/* |
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Copyright 2011 Jun Wako <wakojun@gmail.com> |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 2 of the License, or |
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(at your option) any later version. |
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#include <avr/io.h> |
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#include <avr/interrupt.h> |
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#include <util/delay.h> |
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#include "bootloader.h" |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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/* Start Bootloader from Application |
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* See |
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* http://www.pjrc.com/teensy/jump_to_bootloader.html |
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* http://www.fourwalledcubicle.com/files/LUFA/Doc/120219/html/_page__software_bootloader_start.html |
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*/ |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/* Boot Section Size in bytes |
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* Teensy halfKay 512 |
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* Atmel DFU loader 4096 |
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* LUFA bootloader 4096 |
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*/ |
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#ifndef BOOT_SIZE |
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#define BOOT_SIZE 512 |
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#endif |
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#include "bootloader.h" |
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#define FLASH_SIZE (FLASHEND + 1) |
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#define BOOTLOADER_START (FLASHEND - BOOT_SIZE) |
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void bootloader_jump(void) { |
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cli(); |
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// disable watchdog, if enabled |
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// disable all peripherals |
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UDCON = 1; |
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USBCON = (1<<FRZCLK); // disable USB |
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UCSR1B = 0; |
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_delay_ms(5); |
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#if defined(__AVR_AT90USB162__) |
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EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; |
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TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0; |
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DDRB = 0; DDRC = 0; DDRD = 0; |
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PORTB = 0; PORTC = 0; PORTD = 0; |
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#elif defined(__AVR_ATmega32U4__) |
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EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0; |
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TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0; |
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DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0; |
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PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0; |
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#elif defined(__AVR_AT90USB646__) |
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EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0; |
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TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0; |
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DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; |
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PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0; |
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#elif defined(__AVR_AT90USB1286__) |
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EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0; |
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TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0; |
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DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; |
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PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0; |
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#endif |
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void bootloader_jump(void) __attribute__ ((weak)); |
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void bootloader_jump(void) {} |
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// start Bootloader |
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((void (*)(void))BOOTLOADER_START)(); |
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} |