Objective Development Forums

Please take a look at the revised USBaspLoader: m In the current testing-branch: m I included some features for removing the need of a bootloader-condition (i.e. a button or jumper) * CONFIG_HAVE__BOOTLOADER_ALWAYSENTERPROGRAMMODE * CONFIG_BOOTLOADER_LOOPCYCLES_TIMEOUT=16 & CONFIG_HAVE__BOOTLOAD...

Hi everybody. I do not know how good google-translate will work. But at least for all Germans speaking people: There is a very rich thread about the ATmega32 Minimum System Board in the German Mikrocontroller forum, see here: m There you also can find working and precompiles example firmwares for th...

Maybe you want also to read m ? In VUSB communication via host often is done by just using the control endpoint - the endpoint also responsible for communication device descriptor and strings (vendor, type, serial ...) to the host. For tinyUSBboard I prepared some VUSB template, some time ago. You c...

Hi blargg. Perhaps you might want to try the revised USBaspLoader (m) instead. With this USBaspLoader you have many new features (with individual enable/disable switches) and code-optimizaions. There are also many bugs fixed. If you want to try the most recent version of revised USBaspLoader please ...

Hi trkien.

I am glad I could help.

Since you sucessfully tested USBaspLoader with ATmega128-16AU, may I mark ATmega128 as tested (16MHz) in the next commit to github?

Btw.: If you like USBaspLoader, please give it a star on github

BR matrixstorm

Hi trkien. What is the vlatge you are using the ATmega128 on? Because ATmega128 for 16MHz only runs stable at 4.5 .. 5.5V, the fuses were configured to activate brown out detector. Without brownout detection, the bootloader section may destroy its contents by itself (brownout during write) and the b...

Hi trkien. First of all, I recompiled your USBaspLoader configuration: m m Within the ZIP there is also a patch-file (against current testing-head), which indicates to you my changes for your configuration. (Please clone a fresh copy before applying patch, since: m) However I do not recommend your f...

Hi, it's again me:

If you want to try the new, revised USBaspLoader please use the testing-branch (https://github.com/baerwolf/USBaspLoader/tree/testing).

From the previous message motivated I tried to compile and experienced an build-issue for ATmega128.
I fixed the Bug and commited it to testing-branch.

BR matrixstorm

Hi I used USBaspLoader original with some modifications to suit with my hardware Did you use the revised version of USBaspLoader (m)? Compared to the version from VUSB-Webside this Loader has gone through much improvement and bug-fixing. Also all necessary devicesettings (FUSE, Adresses etc...) are ...

Perhaps you might want to try USBaspLoader (https://github.com/baerwolf/USBaspLoader) insead of bootloaderhid.

With USBaspLoader you have many more features and you also will be able to access the EEPROM, too.

BR matrixstorm

Hi damgad.

There are already lots of V-USB oscilloscopes available.
You also can get one source from me (up to 10kHz) for tinyUSBboard (http://matrixstorm.com/avr/tinyusbboard/).
What really is missing is a nice GUI for both: Linux and Windows.

BR matrixstorm

Hi Madara.

VUSB only implements low-speed USB. In low-speed USB the standard forces:

[...]
The maximum data payload size for low-speed devices is 8 bytes.
[...] (from: http://www.beyondlogic.org/usbnutshell/ ... #Interrupt)

So, you can not implent sth. the standard does not allow.

BR matrixstorm

Hi. I also thought about using VUSB to implement an USB mass storage device on an AVR. The specific classes are called MSC - and they all utilize bulk-transfer mode. Since VUSB can not provide bulk (only low-speed USB) and alternatively interrupt transfer is not always accepted by USB-hosts it is no...

Hi community.

Please look into issue 2 (https://github.com/obdev/v-usb/issues/2).

Am I right or mistaken?

Best regards

Hi community. As a demonstration of one of the new features in revised USBaspLoader (m) I added an example for its demonstration board (m). There you can change the default bootloader (USBaspLoader) into a properly patched BootloadHID. (The patch basically ensures you also can switch back to USBaspL...