Re: [Flashforth-devel] flashforth on p18f4550 - No usb?

[Mikael N. <mik...@pp...>]

The first thing to try is to skip the IDLE_MODE in the config file.
The IDLE_MODE causes the PIC to poll the USB tranceiver
too seldom.
Newer and faster PCs seems to have a problem with that !

Are xtal and pll setting correct ?

Mike

On 13.10.2011 20:46, Scott Balneaves wrote:
> Hello!
>
> I'm trying to get flashforth going on a p18f4550.  I've bought an experimenter
> board from Olimex:
>
> http://www.olimex.com/dev/pic-usb-4550.html
>
> I've git-cloned the latest flashforth, and installed the MPLAB tools
> that came with my PICKIT2 burner.
>
> I create a new project, add ff18_usb.asm, PF18_USB_REG.asm, and add the
> FF_USB_18F4550.lib file.  Build appears to be successful: ends with build
> succeeded.  I program the device and verify it, and it tells me the device
> is programmed successfully and verifies successfully.
>
> I plug the board into my Linux box (64 bit Ubuntu 11.04), and here's what
> I'm seeing in dmesg:
>
> [13843.230116] usb 6-3: new full speed USB device using ohci_hcd and address 17
> [13843.370133] usb 6-3: device descriptor read/64, error -62
> [13843.630123] usb 6-3: device descriptor read/64, error -62
> [13843.890117] usb 6-3: new full speed USB device using ohci_hcd and address 18
> [13844.040144] usb 6-3: device descriptor read/64, error -62
> [13844.300133] usb 6-3: device descriptor read/64, error -62
> [13844.560128] usb 6-3: new full speed USB device using ohci_hcd and address 19
> [13844.980126] usb 6-3: device not accepting address 19, error -62
> [13845.130133] usb 6-3: new full speed USB device using ohci_hcd and address 20
> [13845.550143] usb 6-3: device not accepting address 20, error -62
> [13845.550197] hub 6-0:1.0: unable to enumerate USB device on port 3
>
> I'm assuming it's supposed to look like a USB serial device that I can
> connect minicom to port /dev/ttyUSB0 or the like.
>
> Any ideas on what I'm doing wrong?
>
> Cheers,
> Scott
>
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