Re: endpoints numbers (default & actual)

[Anton Smirnov <dev@xxxxxxxxxxxxxxxxx>]

okay, i found 'out_ep' and 'in_ep' in ftdi context struct, but why they are not used for reset ?

2013/8/6 Anton Smirnov <dev@xxxxxxxxxxxxxxxxx>

Hello. I'm having an issue with libftdi and i have suspection about endpoints numbers.

But start from the beginning, error:

08-06 16:32:16.328: WARN/System.err(15547): ftdi_usb_open_dev()

08-06 16:32:16.328: WARN/System.err(15547): usb_detach_kernel_driver_np()libusb: 0.029116 debug [libusb_detach_kernel_driver] interface 0

08-06 16:32:16.328: WARN/System.err(15547): ftdi claim interface ...

08-06 16:32:16.328: WARN/System.err(15547): libusb-compat debug: usb_claim_interface: interface 0

08-06 16:32:16.328: WARN/System.err(15547): libusb: 0.030246 debug [libusb_claim_interface] interface 0

08-06 16:32:16.328: WARN/System.err(15547): claiming interface using fd = 4

08-06 16:32:16.328: WARN/System.err(15547): ftdi_usb_reset ...

08-06 16:32:16.328: WARN/System.err(15547): libusb-compat debug: usb_control_msg: RQT=40 RQ=0 V=0 I=0 len=0 timeout=300

08-06 16:32:16.328: WARN/System.err(15547): libusb: 0.031222 debug [libusb_get_next_timeout] next timeout in 0.300000s

08-06 16:32:16.328: WARN/System.err(15547): libusb: 0.031527 debug [libusb_handle_events_timeout_completed] doing our own event handling

08-06 16:32:16.328: WARN/System.err(15547): libusb: 0.032046 debug [handle_events] poll() 2 fds with timeout in 300ms

08-06 16:32:16.328: WARN/System.err(15547): libusb: 0.033023 debug [handle_events] poll() returned 1

08-06 16:32:16.338: WARN/System.err(15547): libusb: 0.033389 debug [reap_for_handle] urb type=2 status=-32 transferred=0

08-06 16:32:16.338: WARN/System.err(15547): libusb: 0.033755 debug [handle_control_completion] handling completion status -32

08-06 16:32:16.338: WARN/System.err(15547): libusb: 0.034091 debug [handle_control_completion] unsupported control request

08-06 16:32:16.338: WARN/System.err(15547): libusb: 0.034366 debug [usbi_handle_transfer_completion] transfer 0x2915e0 has callback 0x5ccb4

08-06 16:32:16.338: WARN/System.err(15547): libusb: 0.034732 debug [ctrl_transfer_cb] actual_length=0

trying to define the reason i found that the next endpoints numbers are used by default:

from (usb.h):

#define USB_ENDPOINT_IN 0x80

#define USB_ENDPOINT_OUT 0x00

from ftdi.h:

#define FTDI_DEVICE_OUT_REQTYPE (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT)

#define FTDI_DEVICE_IN_REQTYPE (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN)

actual endpoint numbers:

08-06 16:32:16.328: WARN/System.err(15547): avrdude: usbdev_open(): using read endpoint 0x81

08-06 16:32:16.328: WARN/System.err(15547): avrdude: usbdev_open(): using write endpoint 0x02

the problem is that i'm having different endpoints values and it's FTDI device definitely.

since there is no way to set endpoints for my usb device i have the next question.

1. Why endpoints have such values by default?

2. How should i change them for libftdi correctly as i can't see any methods for this?

Thanks in advance,

Anton.

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