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git.gir.st - tmk_keyboard.git/blob - protocol/pjrc/bootloader_teensy.c
1 /* See http://www.pjrc.com/teensy/jump_to_bootloader.html */
3 #include <avr/interrupt.h>
4 #include <util/delay.h>
5 #include "bootloader.h"
7 void bootloader_jump(void) {
9 // disable watchdog, if enabled
10 // disable all peripherals
12 USBCON
= (1<<FRZCLK
); // disable USB
15 #if defined(__AVR_AT90USB162__) // Teensy 1.0
16 EIMSK
= 0; PCICR
= 0; SPCR
= 0; ACSR
= 0; EECR
= 0;
17 TIMSK0
= 0; TIMSK1
= 0; UCSR1B
= 0;
18 DDRB
= 0; DDRC
= 0; DDRD
= 0;
19 PORTB
= 0; PORTC
= 0; PORTD
= 0;
20 asm volatile("jmp 0x3E00");
21 #elif defined(__AVR_ATmega32U4__) // Teensy 2.0
22 EIMSK
= 0; PCICR
= 0; SPCR
= 0; ACSR
= 0; EECR
= 0; ADCSRA
= 0;
23 TIMSK0
= 0; TIMSK1
= 0; TIMSK3
= 0; TIMSK4
= 0; UCSR1B
= 0; TWCR
= 0;
24 DDRB
= 0; DDRC
= 0; DDRD
= 0; DDRE
= 0; DDRF
= 0; TWCR
= 0;
25 PORTB
= 0; PORTC
= 0; PORTD
= 0; PORTE
= 0; PORTF
= 0;
26 asm volatile("jmp 0x7E00");
27 #elif defined(__AVR_AT90USB646__) // Teensy++ 1.0
28 EIMSK
= 0; PCICR
= 0; SPCR
= 0; ACSR
= 0; EECR
= 0; ADCSRA
= 0;
29 TIMSK0
= 0; TIMSK1
= 0; TIMSK2
= 0; TIMSK3
= 0; UCSR1B
= 0; TWCR
= 0;
30 DDRA
= 0; DDRB
= 0; DDRC
= 0; DDRD
= 0; DDRE
= 0; DDRF
= 0;
31 PORTA
= 0; PORTB
= 0; PORTC
= 0; PORTD
= 0; PORTE
= 0; PORTF
= 0;
32 asm volatile("jmp 0xFC00");
33 #elif defined(__AVR_AT90USB1286__) // Teensy++ 2.0
34 EIMSK
= 0; PCICR
= 0; SPCR
= 0; ACSR
= 0; EECR
= 0; ADCSRA
= 0;
35 TIMSK0
= 0; TIMSK1
= 0; TIMSK2
= 0; TIMSK3
= 0; UCSR1B
= 0; TWCR
= 0;
36 DDRA
= 0; DDRB
= 0; DDRC
= 0; DDRD
= 0; DDRE
= 0; DDRF
= 0;
37 PORTA
= 0; PORTB
= 0; PORTC
= 0; PORTD
= 0; PORTE
= 0; PORTF
= 0;
38 asm volatile("jmp 0x1FC00");