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Add support of USBasp bootloader.

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This commit is contained in:
tmk 2012-06-30 14:44:14 +09:00
parent 2c5d3ac76f
commit 6d79e6579f
3 changed files with 37 additions and 52 deletions
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30
common/bootloader.c
View File

@ -24,12 +24,22 @@
void bootloader_jump(void) {
cli();
//
//Teensy
//
#if defined(__AVR_AT90USB162__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
// disable watchdog, if enabled
// disable all peripherals
UDCON = 1;
USBCON = (1<<FRZCLK); // disable USB
UCSR1B = 0;
_delay_ms(5);
#else
// This makes custom USBasploader come up.
MCUSR = 0;
#endif
#if defined(__AVR_AT90USB162__)
EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
@ -52,6 +62,26 @@ void bootloader_jump(void) {
PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
#endif
//
//USBasp
//
#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P)
// This makes custom USBasploader come up.
MCUSR = 0;
// initialize ports
PORTB = 0; PORTC= 0; PORTD = 0;
DDRB = 0; DDRC= 0; DDRD = 0;
// disable interrupts
EIMSK = 0; EECR = 0; SPCR = 0;
ACSR = 0; SPMCSR = 0; WDTCSR = 0; PCICR = 0;
TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0;
ADCSRA = 0; TWCR = 0; UCSR0B = 0;
#endif
// start Bootloader
((void (*)(void))BOOTLOADER_START)();
}

12
protocol/vusb.mk
View File

@ -1,10 +1,12 @@
VUSB_DIR = protocol/vusb
OPT_DEFS += -DHOST_VUSB
SRC += vusb.c \
usbdrv.c \
usbdrvasm.S \
oddebug.c \
bootloader_usbasp.c \
SRC += $(VUSB_DIR)/main.c \
$(VUSB_DIR)/vusb.c \
$(VUSB_DIR)/usbdrv/usbdrv.c \
$(VUSB_DIR)/usbdrv/usbdrvasm.S \
$(VUSB_DIR)/usbdrv/oddebug.c
ifdef NO_UART

47
protocol/vusb/bootloader_usbasp.c
View File

@ -1,47 +0,0 @@
/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
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, see <http://www.gnu.org/licenses/>.
*/
#include <avr/io.h>
#include <avr/interrupt.h>
#include "bootloader.h"
void bootloader_jump(void) {
cli();
// This makes custom USBasploader come up.
MCUSR = 0;
// ATmega168PA
// initialize ports
PORTB = 0; PORTC= 0; PORTD = 0;
DDRB = 0; DDRC= 0; DDRD = 0;
// disable interrupts
EIMSK = 0; EECR = 0; SPCR = 0;
ACSR = 0; SPMCSR = 0; WDTCSR = 0; PCICR = 0;
TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0;
ADCSRA = 0; TWCR = 0; UCSR0B = 0;
// Boot Loader Section Start Address:
// BOOTSZ Size Address
// (lock bit) (word) (word) (byte)
// '11' 128 0x1F80 0x3F00
// '10' 256 0x1F00 0x3E00
// '01' 512 0x1E00 0x3C00
// '00' 1024 0x1C00 0x3800
asm volatile("jmp 0x3800");
}