Objective Development Forums

The maximum data payload size is 8 bytes for Control transfers as well.However we are able to transfer upto 254 bytes in VUSB by transferring them in a chuncks of 8 bytes in single control requests. I was wondering if this could be done for interrupt tranfers as there is a little description as &quo...

I need to transfer 64 bytes of Interrupt In transfer to PC via AVR. The function usbSetInterrupt is able to transfer only 8 bytes at a time.Using it 8 times to transfer 64 bytes does not seem to be a solution. There is a line in usbdrv.h " If you need to transfer more bytes, use a control read ...

It is possible to change between two device class without plugging the device out. This can be done by making the device descriptors,configuration descriptors,hid descriptors,strings,serial etc all dynamic and selecting them according to the state of any specific key and change them when the key sta...

http://forums.obdev.at/viewtopic.php?f=8&t=3059&p=10404&hilit=+interrupt#p10404 Above forum link says it is possible to disable usb interrupts as long as 50ms and yet stay connected to the host.Can anyone show me ways to do it... I am doing similar project mentioned with no good samplin...

Found soln in other posts of the forum.....thanx to vusb team

I am trying to make usb based oscilloscope.USB startups and data transfers work well.However on starting adc channel it throws an usb error "-5". and the code works sometimes too.. The code is: #include <avr/io.h> #include <avr/interrupt.h> #include <util/delay.h> #include <avr/wdt.h> #in...

I am trying to make usb based oscilloscope.USB startups and data transfers work well.However on starting adc channel it throws an usb error "-5". and the code works sometimes too.. The code is: #include <avr/io.h> #include <avr/interrupt.h> #include <util/delay.h> #include <avr/wdt.h> #inc...