Objective Development Forums

Fuses :
lfuse:w:0xef:m
hfuse:w:0xdb:m
efuse:w:0xff:m

VCC is 3.3V, firmware is configured like this: #define USB_CFG_IOPORTNAME D /* This is the port where the USB bus is connected. When you configure it to * "B", the registers PORTB, PINB and DDRB will be used. */ #define USB_CFG_DMINUS_BIT 3 /* This is the bit number in USB_CFG_IOPORT where...

Maybe there is something wrong with my schematic? If I just assemble the USB part of the circuit, it doesn't work either:

Thx, but DIP and SOIC seem to have the same pinout

Hi guys, I can't seem to figure out why my design works with my through-hole prototype, but not with the fabbed SMD version. [10521.468256] usb 1-1.2: new low-speed USB device number 20 using ehci-pci [10521.482102] hub 1-1:1.0: unable to enumerate USB device on port 2 My setup is pretty similar to ...

christian wrote:You need a timer interrupt which sets a global volatile variable "timerInterruptOccurred" every millisecond.

Can you tell me how?

Hi,

my USB host device has no OHCI companion chip, which means no full/low-speed device support.
If I use a USB hub in between, I can get V-USB based devices to work with it.

Is there any way to do it without the hub?

Thanks