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new fuses for bootloader

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This commit is contained in:
David Voswinkel 2009-07-15 17:22:10 +02:00
parent fbd05f2863
commit 56713860ac
2 changed files with 10 additions and 24 deletions
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23
avr/usbload/Makefile
View File

@ -3,11 +3,11 @@ TTY = /dev/tty.PL2303-00002126
DEVICE = atmega644
F_CPU = 20000000 # in Hz
FUSE_L = 0xf7
FUSE_H = 0xd9
FUSE_H = 0xdd
AVRDUDE = avrdude -c usbasp -p $(DEVICE)
CFLAGS = -Iusbdrv -I. -DDEBUG_LEVEL=0
#-std=gnu99
OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o usb_bulk.o uart.o fifo.o sram.o crc.o debug.o dump.o timer.o watchdog.o
COMPILE = avr-gcc -Wall -Os -DF_CPU=$(F_CPU) $(CFLAGS) -mmcu=$(DEVICE)
@ -15,27 +15,12 @@ COMPILE = avr-gcc -Wall -Os -DF_CPU=$(F_CPU) $(CFLAGS) -mmcu=$(DEVICE)
##############################################################################
# Fuse values for particular devices
##############################################################################
# If your device is not listed here, go to
# http://palmavr.sourceforge.net/cgi-bin/fc.cgi
# and choose options for external crystal clock and no clock divider
#
# http://www.engbedded.com/fusecalc/
################################## ATMega644 ##################################
# ATMega644 FUSE_L (Fuse low byte):
# 0xf7 = 1 1 1 1 0 1 1 1
# ^ ^ \ / \--+--/
# | | | +------- CKSEL 3..0 (external >8M crystal)
# | | +--------------- SUT 1..0 (crystal osc, BOD enabled)
# | +------------------ BODEN (BrownOut Detector enabled)
# +-------------------- BODLEVEL (2.7V)
# ATMega644 FUSE_H (Fuse high byte):
# 0xd9 = 1 1 0 1 1 0 0 1
# ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0
# | | | | | +-------- BOOTSZ1
# | | | | + --------- EESAVE (don't preserve EEPROM over chip erase)
# | | | +-------------- CKOPT (full output swing)
# | | +---------------- SPIEN (allow serial programming)
# | +------------------ WDTON (WDT not always on)
# 0xdd = 1 1 0 1 1 1 0 0

11
avr/usbload/main.c
View File

@ -413,15 +413,16 @@ int main(void)
printf("Send IRQ\n");
snes_irq_lo();
snes_irq_on();
_delay_ms(1);
avr_bus_active();
c = sram_bulk_read();
snes_bus_active();
//avr_bus_active();
//c = sram_bulk_read();
//snes_bus_active();
snes_irq_off();
sram_bulk_read_start(0x003000);
printf("Read 0x3000=%c\n",c);
//sram_bulk_read_start(0x003000);
//printf("Read 0x3000=%c\n",c);
#endif
}
}