i am using arduino isp to program a ATtiny2313 avr microcontroller.
Here is the probelm,
when i was programming the avr chip using the default fuse values, everything worked just fine.
But then, i changed the fuse bytes as i wanted to use an external 16 MHz crystal.
When i changed the lfuse value from 0x64 to 0xff (as per the calculation of the fuse bits), the microcontroller stopped responding.
Now everytime i try to program the microcontroller using arduino uno isp, i get an error message :
avrdude: Yikes! Invalid device signature.
avrdude: Expected signature for ATtiny2313 is 1E 91 0A
and then the fuse bytes shown after verification, very strangely are all set to 0x00 :
avrdude: safemode: Fuses OK (H:00, E:00, L:00)
i dont understand what the hell is happening and i have spent hours trying to figure out the probelm.
should the 16Mhz crystal be connected to the microcontroller while programming ?
PLEASE HELP !
Yes. When you change the configuration bits to use the external oscillator, the internal oscillator is no longer utilised - including during programming. The chip is just stuck in reset until it is provided with an external clock signal. When the ISP attempts to read out a value it is just seeing the data line stuck in the reset state - which is where all the 0x00 values are coming from.
Hook up the crystal or a signal generator to the CLOCKIN pin and you should be able to talk to the chip again.
Had the same issue. If you do not have an external oscillator, you can use
Arduino ISP
On PIN9 you get an osciallator signal you can put on the target on PIN XTAL1.
Saved me two 328p.
Related
I've been using the avr-mkII programmer to program the arduino through ISP for the past month. Recently I noticed that ever since doing that I lost the ability to program the arduino through the USB port - Serial 0. Does anyone have a clue as to how to reset the boards back to normal? I tried this with a few different boards and it is all the same. The New boards that haven't been programmed through the ISP act normally. I basically have lost the ability to communicate with the usb programmer chip. Has anyone experienced this before? Would I need to program the usb communication chip through it's ISP pins? Here the typical generic response that I get when I try to program them.
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
Thanks in advance.
Selecting the correct board and programmer in the IDE and then choosing the option "Burn Bootloader" will upload the stock bootloader and set the fuses appropriately on the main MCU.
I've a arduino UNO R3 and it's causing the same problem but another uno r3 is not showing this problem while uploading and the reset button is also not working. i was working then sudenly one time it showed the above error and then till now .Plz tell what to do as there is no problem with the drivers or compatibility.
On the Atmel ATmega328, which is the MCU in the Arduino, the RESET pin can be configured as a general purpose IO pin (PC6) by programming the RSTDISBL fuse bit, see ยง1.1.5 in the datasheet. When this is done, the pin cannot be used as a reset input anymore.
If you accidentially programmed that fuse there's probably no way to get into the bootloader routine, and there's no way to use serial SPI programming to "un-program" that fuse.
In that case, you will need to use the "high voltage programming" to get your device back working. This can be done using, e.g., the Atmel AVR-STK500 or the "Dragon".
Using a FPGA board, how to initialize the audio codec chip, WM8731, to 16-bit mode at 8 kHz sampling rate, and the input coming from the LINE IN terminal? I have no idea how to start working on the quuestion. Can any body please help me out
WM8731 need to be programmed with initialization parameters for it to work.
Ask for the codec evaluation board from the Wolfson, the evaluation board comes with the source code for configuring the codecs.
This codec can be programed with SPI interface and 2 wire MPU interface. You can also learn more about this at http://www.cs.columbia.edu/~sedwards/classes/2008/4840/
http://www.cs.fsu.edu/~baker/devices/lxr/http/source/linux/sound/soc/codecs/wm8731.c
I recently bought a genuine Arduino Uno r3 .
As soon as I plugged it in it showed me the device name as 'ATmega16u2 DFU'.. but after a lot of google searches, I burned some hex files onto it and now the device is read in the COM ports in the computer as Communication Port 3, if I install specific drivers for it (.inf files) under the device manager it comes Arduino Uno r3..
The problem is when I try to uploadthe code it says (The RX Led flashes 3 times but then nothing happens..)
Binary sketch size: 444 bytes (of a 32,256 byte maximum)
Estimated used SRAM memory: 9 bytes (of a 2048 byte maximum)
avrdude.exe: stk500_getsync(): not in sync: resp=0x00
I already checked that I am selecting the correct COM and BOARD from the IDE. Installed the board with tons of diferent drivers... ( I have win7 x32).
Do you think this is some driver related issue, defective board or something else ?
The first step is to go into the Arduino IDE preferences and switch on "show verbose output during upload". This in turn allows for much more precise error analysis.
I've just got my first brand new Arduino mega 2560 board. I've downloaded Arduino 1.0.1 software.
When I first plugged in the board, it failed to detect the device. So I opened device manager and pointed to the "...\arduino-1.0.1\drivers" folder to update the driver for the unidentified Arduino Mega 2560 device.
Now comes my first problem; (O/S is window 7 32bit)
Following warning came.
I chose to install anyway. Is that wrong??
However driver is successfully installed.
Then I opened Arduino 1.0.1 software (what should i call it, IDE?) and opened the blink example. And tried to upload it to the board. I didn't change any settings. Kept the default settings, which are;
Board = Arduino Mega 2560 or Mega ADK
Serial Port = COM3
Upload failed giving following error,
Binary sketch size: 1,632 bytes (of a 258,048 byte maximum)
avrdude: stk500v2_command(): unknown status 0xc8
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.
avrdude: stk500v2_command(): unknown status 0x01
avrdude: stk500v2_disable(): failed to leave programming mode
How can I get over with this? I don't have any prior experience on Arduino. Can't figure out what to do now.
It would be greatly appreciated if someone can help me to overcome this issue. If the details I provided are not enough, please ask. Hope someone will come to help soon..
Thank you!
The same problem with possible solution is described here:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?action=print;num=1287724404