2 #include <avr/interrupt.h>
3 #include <util/delay.h>
4 #include "bootloader.h"
6 /* Start Bootloader from Application
8 * http://www.pjrc.com/teensy/jump_to_bootloader.html
9 * http://www.fourwalledcubicle.com/files/LUFA/Doc/120219/html/_page__software_bootloader_start.html
12 /* Boot Section Size in bytes
14 * Atmel DFU loader 4096
15 * LUFA bootloader 4096
21 #define FLASH_SIZE (FLASHEND + 1)
22 #define BOOTLOADER_START (FLASHEND - BOOT_SIZE)
24 void bootloader_jump(void) {
26 // disable watchdog, if enabled
27 // disable all peripherals
29 USBCON = (1<<FRZCLK); // disable USB
32 #if defined(__AVR_AT90USB162__)
33 EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
34 TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
35 DDRB = 0; DDRC = 0; DDRD = 0;
36 PORTB = 0; PORTC = 0; PORTD = 0;
37 #elif defined(__AVR_ATmega32U4__)
38 EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
39 TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0;
40 DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0;
41 PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
42 #elif defined(__AVR_AT90USB646__)
43 EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
44 TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
45 DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
46 PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
47 #elif defined(__AVR_AT90USB1286__)
48 EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
49 TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
50 DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
51 PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
55 ((void (*)(void))BOOTLOADER_START)();