Objective Development Forums

I'm looking at the source code and it looks like the firmware does not come with a makefile, normally you build the project with the makefile (or some other way) to get a *.hex file to upload to the ATmega with a programmer. Apparently there are *.a90 files in the release folder for specific chips, ...

did you change USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH ?

There is no equivalent for the ATmega328P You may also try defining "USB_INTR_VECTOR" as "INT0_vect" in "usbconfig.h", or replacing "SIG_INTERRUPT0" with "INT0_vect" in "usbdrvasm.S" (around line 60 in version 20090822). That last sentence ...

Hmm... I don't think this is practical. The problem is probably due to memory (what variables is saved where). If the generated HEX file is identical for both the application code and bootloader code (obviously with a offset in the flash address), then your bootloader can probably just skip usbInit ...

typedef void (*AppPtr_t)(void) __attribute__ ((noreturn)); AppPtr_t AppStartPtr = (AppPtr_t)0x0000; AppStartPtr(); That's code I found here m So modify it with the bootloader address instead. typedef void (*AppPtr_t)(void) __attribute__ ((noreturn)); AppPtr_t BootloaderPtr = (AppPtr_t)0xAddressGoes...

it sounds like you got things right

maybe it is another commonly overlooked detail, like defining clock speed, setting the right clock fuses, boot reset vector being enabled, or something regarding the watchdog timer.

i did some code changes to "USBaspLoader.2009-03-20" file usbdrvasm.S line 59 # define USB_INTR_VECTOR INT0_vect this change made V-USB work with the ATmega328P whereas before it would not due to a mis-defined interrupt vector name refer to this post http://forums.obdev.at/viewtopic.php?f=...

ok i've compiled it for the atmega328p with the 4k bootloader setting (instead of 2k so it will fit) and my own pin configuration and it works, so now i just have to figure out how to compile it under 2k so it works with other chips.

did you manually optimize the disassembly or something?

I can't seem to compile USBaspLoader to fit within 2048 bytes with any of the settings (all chips ranging from atmega8 to atmega328p, all supported clocks from 12 to 20 MHz) I uploaded the resulting hex files to my chip (atmega168 with a 12mhz clock) anyways and the computer won't enumerate my devic...

Your fuses might be wrong, double check them
Here are your current settings

http://frank.circleofcurrent.com/fuseca ... LOCKBIT=FF

I'd recommend these settings

http://frank.circleofcurrent.com/fuseca ... LOCKBIT=FF

The change was from a low frequency crystal setting to a high frequency crystal setting (I think anything greater than 8 MHz counts as "high frequency")

This projects let's you use a Nintendo Nunchuk controller as an USB gamepad on your computer (a joystick, 2 buttons, and it also 3 axis of acceleration data). It also let's you use it as an USB mouse, but this function can be disabled by a jumper. Tilting the Nunchuk is the same as moving the mouse ...

that fixed it, I did a search in the registry for "PS2USB" and deleted all the entries i found, thanks

I made a copy of the PS2USB project posted at m and got it working, but now I made my own gamepad using a nunchuk and edited the usbconfig.h to say "Nunchuk Joystick". In "Devices and Printers" of Windows 7's control panel, it says "Nunchuk Joystick" but if I right clic...