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change fuses , always watchdog and 2048 words bootloader section

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This commit is contained in:
David Voswinkel 2009-07-20 23:13:21 +02:00
parent 9e1a9fffc5
commit e45b08a5fb
2 changed files with 32 additions and 20 deletions
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13
avr/usbload/Makefile
View File

@ -2,8 +2,7 @@
TTY = /dev/tty.PL2303-00002126
DEVICE = atmega644
F_CPU = 20000000 # in Hz
FUSE_L = 0xf7
FUSE_H = 0xdd
AVRDUDE = avrdude -c usbasp -p $(DEVICE)
CFLAGS = -Iusbdrv -I. -DDEBUG_LEVEL=0
@ -16,12 +15,8 @@ COMPILE = avr-gcc -Wall -Os -DF_CPU=$(F_CPU) $(CFLAGS) -mmcu=$(DEVICE)
# Fuse values for particular devices
##############################################################################
# http://www.engbedded.com/fusecalc/
################################## ATMega644 ##################################
# ATMega644 FUSE_L (Fuse low byte):
# 0xf7 = 1 1 1 1 0 1 1 1
# ATMega644 FUSE_H (Fuse high byte):
# 0xdd = 1 1 0 1 1 1 0 0
FUSE_L = 0xf7
FUSE_H = 0xda
# symbolic targets:
@ -76,7 +71,7 @@ usbdrv:
cp -r ../../../usbdrv .
main.elf: usbdrv $(OBJECTS) # usbdrv dependency only needed because we copy it
$(COMPILE) -o main.elf $(OBJECTS) -Wl,-u,vfprintf -lprintf_flt
$(COMPILE) -o main.elf $(OBJECTS) -Wl,-u,vfprintf -lprintf_flt
main.hex: main.elf
rm -f main.hex main.eep.hex

39
avr/usbload/main.c
View File

@ -405,24 +405,41 @@ int main(void)
while (req_state != REQ_STATUS_AVR){
usbPoll();
#if 0
#if 0
i = 20;
while (--i) { /* fake USB disconnect for > 250 ms */
_delay_ms(100);
_delay_ms(500);
printf("Wait to switch to avr mode %i\n", i);
}
printf("Send IRQ\n");
snes_irq_lo();
snes_irq_on();
_delay_ms(1);
//snes_irq_lo();
//snes_irq_on();
//_delay_ms(1);
//avr_bus_active();
//c = sram_bulk_read();
//snes_bus_active();
avr_bus_active();
snes_irq_off();
sram_bulk_read_start(0x003000);
c = sram_bulk_read();
i = 5;
while (--i) { /* fake USB disconnect for > 250 ms */
_delay_ms(500);
printf("Wait to switch to snes mode %i\n", i);
}
//sram_bulk_read_start(0x003000);
//printf("Read 0x3000=%c\n",c);
if (req_bank_size == 0x8000){
snes_lorom();
printf("Set Snes lowrom \n");
} else {
snes_hirom();
printf("Set Snes hirom \n");
}
snes_wr_disable();
printf("Disable snes WR\n");
snes_bus_active();
printf("Activate Snes bus\n");
printf("Read 0x3000=%c\n",c);
#endif
}
}