| #include <stdint.h> |
| |
| #include <libusb.h> |
| |
| /*! \brief obtain the endpoint addresses for a given USB interface */ |
| int get_usb_ep_addrs(libusb_device_handle *devh, unsigned int if_num, |
| uint8_t *out, uint8_t *in, uint8_t *irq) |
| { |
| libusb_device *dev = libusb_get_device(devh); |
| struct libusb_config_descriptor *cdesc; |
| const struct libusb_interface_descriptor *idesc; |
| const struct libusb_interface *iface; |
| int rc, l; |
| |
| rc = libusb_get_active_config_descriptor(dev, &cdesc); |
| if (rc < 0) |
| return rc; |
| |
| iface = &cdesc->interface[if_num]; |
| /* FIXME: we assume there's no altsetting */ |
| idesc = &iface->altsetting[0]; |
| |
| for (l = 0; l < idesc->bNumEndpoints; l++) { |
| const struct libusb_endpoint_descriptor *edesc = &idesc->endpoint[l]; |
| switch (edesc->bmAttributes & 3) { |
| case LIBUSB_TRANSFER_TYPE_BULK: |
| if (edesc->bEndpointAddress & 0x80) { |
| if (in) |
| *in = edesc->bEndpointAddress; |
| } else { |
| if (out) |
| *out = edesc->bEndpointAddress; |
| } |
| break; |
| case LIBUSB_TRANSFER_TYPE_INTERRUPT: |
| if (irq) |
| *irq = edesc->bEndpointAddress; |
| break; |
| default: |
| break; |
| } |
| } |
| return 0; |
| } |
| |
| #if 0 |
| struct libusb_device_descriptor ddesc; |
| int rc, i, j, k; |
| |
| rc = libusb_get_device_descriptor(devh, &ddesc); |
| if (rc < 0) |
| return; |
| |
| for (i = 0; i < ddesc.bNumConfigurations; i++) { |
| struct libusb_config_descriptor *cdesc; |
| rc = libusb_get_config_descriptor(devh, i, &cdesc); |
| if (rc < 0) |
| return; |
| |
| for (j = 0; j < cdesc->bNumInterfaces; j++) { |
| const struct libusb_interface *iface = cdesc->interface[j]; |
| for (k = 0; k < iface->num_altsetting; k++) { |
| const struct libusb_interface_descriptor *idesc = iface->altsetting[k]; |
| /* make sure this is the interface we're looking for */ |
| if (idesc->bInterfaceClass != 0xFF || |
| idesc->bInterfaceSubClass != if_class || |
| idsec->bInterfaceProtocol != if_proto) |
| continue; |
| /* FIXME */ |
| } |
| } |
| |
| libusb_free_config_descriptor(cdesc); |
| } |
| #endif |