From comes interesting question:“Is it possible to download the contents of an ATmega168/328, essentially backing it up so that it can somehow be restored later?For example: Let’s say I have lost the source code to a very useful program currently residing on a 328, but I need to flash it with a different sketch temporarily, then restore that original sketch. This would be useful in the case that the chip was soldered directly onto a board – a big mess to try to replace.Is this possible in some way, perhaps by altering an ISP programmer?”The answer is that yes indeed, it is possible– with a couple of exceptions that are worth mentioning. And on occasion, it’s even very useful.Reading out the flash memory is straightforward with an AVR ISP programmer, such as the USBtinyISP, using avrdude from the command line.You’ll need to have a copy of the AVR toolchain– or at least avrdude –installed on your computer. There are easy installers available for Mac and Windows that include this software, along with the other open source tools for AVR development. Linux packages for AVR development are also available.Reading the flashTo read out the contents of the flash memory of your AVR, you just need to hook up your ISP programmer to the target board, and run an appropriate avrdude command to read out the flash.
For “dumping” out the contents of an ATmega328P, for example, you might use the command:avrdude -p m328p -P usb -c usbtiny -U flash:r:flash.bin:rWhere, “atmega328p” is the name of the chip, written exactly as found in the, “-P usb” means that we’re using a usb-connected programmer, and “usbtiny” is the programmer type (again, taken from the list in the documentation).The real heart of the command is the last part, -U flash:r:”flash.bin”:r. This tells avrdude to read the contents of the flash (“flash:r”), save it to a file named “flash.bin,” and specifies the format (“:r”), in this case raw binary.Writing the flashTo write the contents of that file, “flash.bin,” we use a similar command, only now telling it to write the contents “flash:w”:avrdude -p m328p -P usb -c usbtiny -U flash:w:flash.binAgain, the exact command line needs to be tailored to your particular chip, programmer, and file name.ApplicationsSo, when would this kind of method be useful? Yes, it’s possible that you’ve lost the source code to a piece of software– but perhaps that’s an esoteric case. We have actually found this method to be very helpful in daily use as a sort of “disk image” file.You can, for example, read and write the full flash contents of an Arduino device that has both the Arduino bootloader and a program on top of that. Then, deploying an additional copy of that program becomes as simple as executing a single command to write the flash file. For “production programming” — that is, making many clones of an AVR program –it has the added benefits of being fast and reliably consistent, as compared with individually compiling and installing firmware for each device.CaveatsAs we mentioned earlier, there are a couple of exceptions that are worth mentioning:1.) It is possible to intentionally lock the contents of the flash memory, such that the contents cannot be read out.
You can do this by setting the lock bits of the AVR according to the values listed in the datasheet, and the lock bits cannot be reset except by erasing the whole device.There are known ways of getting around this, so please don’t consider lock bits sufficient defense if you are worried about someone stealing your code as a means of industrial espionage.2.) These commands, as written, only back up the contents of the flash (program) memory. Reading out the EEPROM or fuse byte values can be done in similar ways. You can read more about the avrdude command line options in the, or in the tutorial.For production programming, the single avrdude statement can set the fuse bytes and also write the flash, or a makefile can be written to give multiple avrdude statements, for sequencing the order of writing flash and fuse and/or lock bits.
You might want to add that while the lock bits prevent reading the actual flash memory contents, you won’t get an error message. The binary file will be created just as it would without the lock bits set, but it contains nonsense (or, more precisely, the lower 8 bits of word address of the memory location). So you will have to open the binary file with a hex editor (I recommend frhed for windows and dhex for linux/console, if you’re using KDE then khexedit might be a good choice). If it contains a pattern like 00 00 01 01 02 02 03 03 04 04and so on, the AVR is most probably locked.
I have an Arduino Duemilanove with an Atmega 328. Paragon ntfs for mac 11 product key and serial number lookup. I am working on Ubuntu 12.04, and the Arduino IDE's version is 1.0. Recently, I tried to upload a few of the sample sketches onto it, such as the Blink one. However, none of my attempts are working and they result in the same error every time I try it:avrdude: stk500recv: programmer is not responding.I have enabled /dev/ttyUSB0 under Tools - Serial Port. I have also selected the correct board (Duemilanove with Atmega 328) from the list. Yet, I am not able to resolve the issue.
I have searched online as well and none of the other responses for this problem seem to be working for me. Why I am encountering this issue and how to resolve it?I also tried turning the onboard Atmega and fitting it in the other direction. Now, I encounter no problems uploading, but nothing happens afterwards. The onboard LED also does not seem to be blinking. I had this problem with a Crowduino, running the Arduino IDE on OSX. The solution for me was to switch on verbose output during upload (in the arduino IDE preferences pane).Then, when uploading, you can see avrdude sending three packets avrdude: Send: 0 30 20 (with corresponding RX flashes on the board) right before the avrdude: serrecv: programmer is not responding error.The trick is to hit the reset button on the board immediately before these three packets are sent.
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Then the program will be uploaded successfully. I know this is an old post, but there is some voodoo-talk in the answers around here amongst good ideas, let's try to be a bit more real about what's happening and sum up the good stuff to check:Basically, when that happens, it is a good idea to enable verbose mode for avrdude, to get a better idea of what's happening. To do so, you only need to go in the preferences and check the verbose mode box.
It's also a good idea to move away from the arduino IDE, and launch a console to be more comfortable on reading avrdude's output, that you'll get on clicking on the upload button.What's important here to put 3 or 4 -v to the command call. Here's how looks like such avrdude commands, with made up parameters as they are totally dependent on how the Arduino has been installed: avrdude -v -v -v -v -C /path/to/avrdude.conf -patmega328 -P/dev/usbport -U flash:w:/path/to/firmware.hexA good way to get the correct command line to use is to copy it from the verbose output of the Arduino IDE output log when verbosity has been enabled.When you get avrdude: stk500recv: programmer is not responding, it basically means that something wrong is happening, before the flashing actually begins. Basically you have to check (from hardware to software, low level to high level):. if the cable and/or connectors does not have microcuts;. if no solder points are short circuiting (i.e. Touching something metallic around), that means:.
if there is no short circuit on the PCB between Rx and Tx (usually pins 1 and 0);. if there is no contact with a metallic element below the board, or tiny bits between a component's legs (like the FTDI, the atmega chip or any other);. if the atmega chip is not out of power (GND/VCC shortcut or cut or VCC input being dead);. if the 1 and 0 pins of the Arduino are not being used by some shield or custom design ( /! Does not apply to the leonardo as it has independent USB handling);. if the USB to UART converter does not have a problem ( FTDI on older duemilanove or Atmega16U2 on newer Unos);. if the Atmega328 chip is fried or wrongly installed;.
if the bootloader has been overwritten or is failing;. if the right baudrate is applied for entering the bootloader;. if the right settings are set for the target MCU and Board;usually the avrdude -v -v -v -v can help a lot find at which stage it is failing. Whether it can't make a USB connection at all (cable failing, USB/UART, PCB), or it is a bootloader problem.Update: I tried turning the onboard Atmega and fitting it in the other direction. Now, I encounter no problems uploading, but nothing happens afterwards.
The onboard LED also does not seem to be blinking.I'm afraid that if you reversed the position of the atmega, and then it does not work, the fact that you placed the power source on digital pins may have burnt your chip.
AVRDUDE - AVR Downloader/UploaDEr AVRDUDE - AVR Downloader/UploaDEris a utility todownload/upload/manipulate the ROM and EEPROM contents of AVRmicrocontrollers using the in-system programming technique (ISP). DocumentationDocumentation can be downloaded from the,or read online. HistoryAVRDUDE has once been started by as a private projectof an in-system programmer for the Atmel AVR microcontroller series,as part of the Opensource and free software tools collection available forthese controllers.
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Originally, the software was written for the,maintained in a private CVS repository, and distributed under the nameavrprog.Due to the growing interest in porting the software to otheroperating systems, Briandecided to make the project publically accessible on. The name change to AVRDUDE has been chosen toresolve the ambiguity with the avrprog utility as distributedby Atmel together with their AVRstudio software. Main featuresThe major features of AVRDUDE include:. Command-line driven user interface for all downloading anduploading features (including handling fuse bytes), for easyautomation e.
By inclusion into Makefiles. Interactive examination and modification of various memoryregions in so-called terminal mode. Also offered is anoption to modify the operational parameters of an Atmel STK500board (target voltage, VAref, master clock frequency). Known to run on all major POSIX-style operating systems, as well as Win32 platforms. By usingexisting operating system drivers on the POSIX-style systems, secure parallel-port accesswithout root privileges can be maintained. On Win32 platforms,parallel port access requires the previous installation of a driver( giveio.sys) that grants a user process direct access tothe IO registers. Supports a wide range of programming hardware, from cheap ISPplugs that connect the AVR's ISP interface directly to acomputer's parallel port (no additional circuitry) or serial port (some additional circuitry needed), more advancedISP adapters using a buffer/driver chip (like a 74HC373), up to(more complex) serially connected programmers like AVR910-styleISP devices, the Atmel STK500 board, and the Atmel JTAG ICE mkII.
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Most popular adapterscome pre-defined, adding a new parallel-port adapter is as simpleas editing a configuration file (no recompilation needed). Supports Intel Hex, Motorola S-Record, and raw binary filesfor input and output, as well as direct memory contentsspecification on the command-line (useful e. For fusebytes). On input, the file format can be auto-detected. In 'terminal mode', the device's memory areas can beexamined, and possibly modified. This allows to set fusesinteractively, or to modify a few EEPROM cells.How to get help or report bugsTo get support for AVRDUDE, or get in contact with other users ofthis tool, see the.People who want to contribute in some way to the project cansubscribe to the, and get in contact with the developer teamthere.If you are certain you found a bug in AVRDUDE, you can open a.There is not much developers' documentation for AVRDUDE so far.There is a withsome random articles.Some more information is available at.Last modified: Fri Jan 8 09:14:46 CET 2010.
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Anybody get continuous timeout messages doing this? This is from a Raspberry Pi running OctoPrint.
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AVRDUDE: 2.1 Option Descriptions Index2.1 Option DescriptionsAVRDUDE is a command line tool, used as follows:avrdude -p partno options Command line options are used to control AVRDUDE’s behaviour. Thefollowing options are recognized:-p partnoThis is the only mandatory option and it tells AVRDUDE what type of part(MCU) that is connected to the programmer. The partno parameteris the part’s id listed in the configuration file. To listall parts in the configuration file.