I am trying to read the fuse values for the Arduino Uno, but keep getting the following results returned back to me:
enter code hereavrdude: Version 6.0.1, compiled on Dec 16 2013 at 17:26:24
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "/usr/local/CrossPack-AVR-20131216/etc/avrdude.conf"
User configuration file is "/Users/hd334/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/cu.usbmodem1421
Using Programmer : arduino
Overriding Baud Rate : 115200
AVR Part : ATmega328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 20 4 0 no 1024 4 0 3600 3600 0xff 0xff
flash 65 6 128 0 yes 32768 128 256 4500 4500 0xff 0xff
lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
Programmer Type : Arduino
Description : Arduino
Hardware Version: 3
Firmware Version: 4.4
Vtarget : 0.3 V
Varef : 0.3 V
Oscillator : 28.800 kHz
SCK period : 3.3 us
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e950f
avrdude: safemode: lfuse reads as 0
avrdude: safemode: hfuse reads as 0
avrdude: safemode: efuse reads as 0
avrdude: safemode: lfuse reads as 0
avrdude: safemode: hfuse reads as 0
avrdude: safemode: efuse reads as 0
avrdude: safemode: Fuses OK (H:00, E:00, L:00)
avrdude done. Thank you.
I have tried using avrisp as the programmer too, but this reports an invalid device signature. If I override the device signature check with -F I get the same results as above.
I am using an Uno as the ISP to another uno and have connected the two together as detailed in https://www.arduino.cc/en/Tutorial/ArduinoISP
I have boot loaded the Arduino Atmega328P boot loader and from the fuse settings given in the boards.txt file expect to see: lfuse reads 0xff hfuse reads 0xde efuse reads 0x05
Another question is with the low fuse set to 0xff the CKDIV8 is programmed so won't the clock be set to 2MHz?
Please help
0
to enable the divide by 8. Since it's set to1
the clock frequency will be 16MHz (when using a 16MHz crystal, that is).Note for the Arduino Uno: you'll need to add a 10 uF capacitor between reset and ground.
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