A brief word about bootloaders:. Generally, a bootloader is a small program which runs at boot time and is capable of loading a complete application program into a processor's memory so that it can be exectuted. Note that the bootloader runs on the same processor into which it is loading a new program. In the case of AVR processors, the bootloader program is usually assembly instuctions long and resides in a special portion of the FLASH memory called the bootblock.
At boot time when the processor has just been reset the bootloader starts and is capable of communicating with the outside world to retrieve a new program and program it into the processor's FLASH memory. Depending on the bootloader and the available hardware, new application code can be loaded from any source including the serial port, SPI or I2C interfaces, external memory, hard disks, flash cards, etc. Once the programming is done, the bootloader program exits or the processor is reset and begins running the newly loaded code.
Only AVR processors with the self-programming memory feature those that have an SPM assembly instruction can run a bootloader. With me, Windows had selected another driver that I had on my computer.
If there are several drivers listed, just try it out. For the sake of completeness, I would like to list this variant. However, the subject is so extensive that it would go beyond the scope. I will therefore only briefly outline it here and provide a step-by-step instruction in a separate post.
Atmel Studio currently version 7 is a free IDE that can be downloaded here. It includes everything you need on the software side to program Atmel microcontrollers. This may seem a little daunting, but it has its advantages, e. In addition, you can see better what is really happening at the level of ports and registers. The downside: it takes some time to get used to it and the programmers are relatively expensive. Still, fancy more? Then stay tuned and wait for the post about Atmel Studio.
By the way, I think you probably speak English better than most Americans no kidding. Your writing is certainly clearer and more accurate. Hope so… Thanks again, Joe. Hi Joe, thanks for your kind feedback which is very motivating.
I will not promise anything, but at least I add it to my list of ideas! Best wishes, Wolfgang. Your email address will not be published. Inform me about new posts! You will NOT be notified about new or follow-up comments!
There is no point in calling it COM5 if this does not refer to your Leonardo. Likewise, there is no point in using the Duemilanove bootloader if you have a Leonardo. Your original command would have been fine if you just enclose the -C argument in quotes. Or just omitted it completely. Run the Arduino IDE. Does it recognise the Leonardo? Does it tell you which COM port it uses? Re-install the bootloader with the Arduino IDE.
Maximum is 28, bytes. Maximum is 2, bytes. Block Poll Page Polled Memory Type Mode Delay Size Indx Paged Size Size Pages MinW MaxW ReadBack eeprom 65 20 4 0 no 4 0 0x00 0x00 flash 65 6 0 yes 0x00 0x00 lfuse 0 0 0 0 no 1 0 0 0x00 0x00 hfuse 0 0 0 0 no 1 0 0 0x00 0x00 efuse 0 0 0 0 no 1 0 0 0x00 0x00 lock 0 0 0 0 no 1 0 0 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 0x Connecting to programmer:.
Programmer supports auto addr increment. Note that you need to close any Arduino Terminal before trying to use avrdude via AS6 or other program. I would expect the Device Manager to find it too.
Solved, Arduino closed, path added for hex file, set the Leonardo in bootloader mode, then external tool, magic. It is not necessary to use a. BAT file. You can simply point the Command to your particular avrdude. Note that I have not used any -Cconf switch. That is because avrdude. The reason of this error is that Atmel Studio 6. Zadig is a USB driver manager for Windows, and saved me a hundred times this year.
The last version comes with the libusb-win32 v1. That's it! No restart required. While everything works ok in Atmel Studio 7 now I noticed that my Arduino environment got messed up. While it recognizes my Leonardo on COM5 in the bottom on the Arduino window it does not show at Port which is greyed out so I cannot load anything anymore in Arduino.
My Leonardo arrived yesterday. It seems to be the flakiest thing that I have ever seen. Sometimes not present at all. Sometimes the Upload works. Sometimes you have to press the Reset button at just the right moment. If you start the "Serial Monitor" it might start running. I can write an AS6 program. Upload it via avrdude on COM47 but it will not start running. Quite honestly, I only want the Serial functionality.
Upload via a Bootloader, comms via a Serial Terminal. It is rather a lot of bother to do the COM port speed change. It is as easy to press the Reset button to start the Bootloader. The Arduino apps include USB code and service routines. Any Arduino app that has Serial. Serial ;.
If you are not running a Serial Terminal, the while! Serial will never be false. Normally you start with all registers in the Default state. Of course, "Caterina" is an "Arduino Bootloader". I doubt if the Arduino developers worry about people who use their hardware for non-Arduino apps.
Anyway, I can build programs with AS6. Upload onto the Leonardo via avrdude on the Tools menu. My Leonardo went up in smoke when I connected the 9V power supply. Probably more fake than yours. I noticed that connecting the battery may cause the processor to go into bootloader mode, then you have to wait 8 seconds before the program starts to work.
This board has no reset button.
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