Objective Development Forums

IIRC USB-PS/2 adapters don't really convert USB to Serial just that most USB keyboards are backwards compatible with PS/2. If you want to connect to a PS/2 port then you're far better off using the hardware USART present on most AVR's

vargata wrote:How can i link the usbdrvasm.s to AVRStudio ?

I would recommend you take a look at the AVR-CDC project for a good example of how it should be done. An AVR Studio project .aps is included with the source code.

Ok, I just downloaded VC2008 and got exactly the same problem with my original solution. Seems there are some conflicts with the VC includes and the WDK includes that for some reason did not present themselves under VC2005. My solution: Under project properties C/C++ => Preprocessor set Ignore Stand...

Hi, I could post a VS2005(Express) project file but I doubt it would help you, the dirs and versions will almost certainly be different to yours. Probably best you tell us a bit more about your setup, eg Operating System, which ddk libs you linked and directories included etc.

At a guess i'd say the calibration is not being done correctly. Take a closer look at usbconfig.h & osccal.h #if USB_CFG_CLOCK_KHZ==16500 #define USB_CFG_HAVE_MEASURE_FRAME_LENGTH 1 #include "osccal.h" #else #define USB_CFG_HAVE_MEASURE_FRAME_LENGTH 0 #endif /* define this macro to 1 i...

what did you change when you adapted easylogger to hid-data example? Sorry, that was a while back and I no longer have the code but IIRC very little change was required. Really more a matter of adapting the hid-data exampe for ATtiny45 not really anything to do with easylogger other than copying th...

I got it working fine with WDK: http://forums.obdev.at/viewtopic.php?f=8&t=3388 Also, MinGW ships with a free version of teh DDK, probably the easiest way to go if you only want to compile the sample. Edit: Sorry, I see you are using linux. In that case you can't use WDK and I don't suppose the ...

Good quality, high power type AA batteries can give out as much as 2V when they're new, although I think it would be too much of a coincidence for both computers to be reading 8V. You don't by any chance have your meter set to AC?

i'm a little bit confised to. where do i get 7.6 V, if it should be 5 ? I would question the measuring device in this case. Try measuring the output from your usb port without the device connected, if it is 7.6V then you have some serious problem. I'd say it's more likely 5V and solution B would be...

Since the device does not appear to be self-powered I cannot understand where the 7.6 Volts are comming from. You did detach the isp before plugging it into the usb port didn't you? At a guess I'd say the problem is lack of proper level conversion, whilst this setup may work on some systems it will ...

Any thoughts on getting these names right in Ubuntu? I suspect that it's more a libusb issue than an OS specific one. Problem is that it's unconventional for two entirely different devices to have the same PID & VID, I guess the proper answer would be to use a unique VID/PID for each V-USB devi...

Well, it could be that libusb is mistaking the LEDControl for your USBasp programmer. I have experienced similar situations under Windows when I have had connected multiple V-USB devices, probably because they all share the same VID & PID but I'm not entirely sure. The problem is resolved under ...

I still can't see where the problem is but here are a few suggestions you may or may not have already tried. 1. I don't see the 100n cap anymore, I would recommend you include that as well as the 4u7 (10u should be fine btw) 2. Test resistance beetween the 'A' end of the usb cable and the actual uC ...

For the example projects F_CPU is set in the makefile. Some other projects may define it in the source code, usually in usbconfig.h.

Ok going back to the OP you now say you have D- connected to PD4. D- should be connected to INT0 (Pin 4 PD2) unless otherwise specified in usbconfig.h. Looking at the photo again I think you may simply have D+ and D- the wrong way round. <edit /> Sorry my mistake D+ should be connected to the interr...