Date: Wed, 17 Oct 2007 07:36:21 +0800 From: "Xiaofan Chen" <xiaofanc@gmail.com> To: "Hans Petter Selasky" <hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: PICkit 2 again with HPS stack Message-ID: <a276da400710161636q492cd6d5sc28677765a7b6c9a@mail.gmail.com> In-Reply-To: <200710161844.20468.hselasky@c2i.net> References: <a276da400710120332h5f780ee8g9a12d5fb5548f8da@mail.gmail.com> <200710152303.29294.hselasky@c2i.net> <a276da400710160542q71bb4983jf27b59cb0e5ee104@mail.gmail.com> <200710161844.20468.hselasky@c2i.net>
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On 10/17/07, Hans Petter Selasky <hselasky@c2i.net> wrote:
> > Thanks a lot. So it seems there is still a bug in the firmware. Maybe two.
> > The first one caused the stall (why?). The second one is still related to
> > dealing with clear stall feature reques
>
> I think that the clear-stall command will flush the FIFO of the interrupt
> endpoint.
>
> Is it possible that you can open the interrupt endpoint which is a
> file, /dev/ugenX.X, before sending the version command ? So that we
> don't end up clearing the stall after sending the command, but before.
>
PICkit 2 applications I am testing now are all using libusb. I have
not really looked into the libusb FreeBSD codes (I am not good
at programming) but I will try.
I have the following codes from a FreeBSD user. He is trying not to
use libusb. I will try to add his codes to see if it helps.
static void check_device_id(void)
{
usb_device_descriptor_t udd;
ioctl(fdpk2, USB_GET_DEVICE_DESC, &udd);
if (udd.idVendor != vidMicrochip || udd.idProduct != pidPICkit2)
die("device isn't a PICkit2");
}
void pk2open(char *devname)
{
printf("pk2open =>\n");
fdpk2 = open(devname, O_RDWR);
if (fdpk2 < 0)
die_errno("open failed");
check_device_id();
printf("pk2open <=\n");
}
static char *pk2dev = "/dev/ugen0.1";
int main(int argc, char **argv)
{
pk2open(pk2dev);
...
}
Regards,
Xiaofan
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