211 lines
6.4 KiB
C
211 lines
6.4 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2008 coresystems GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <usb/usb.h>
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#include <curses.h>
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enum { hid_subclass_none = 0, hid_subclass_boot = 1 };
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typedef enum { hid_proto_boot = 0, hid_proto_report = 1 } hid_proto;
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enum { hid_boot_proto_none = 0, hid_boot_proto_keyboard =
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1, hid_boot_proto_mouse = 2
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};
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static const char *boot_protos[3] = { "(none)", "keyboard", "mouse" };
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enum { GET_REPORT = 0x1, GET_IDLE = 0x2, GET_PROTOCOL = 0x3, SET_REPORT =
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0x9, SET_IDLE = 0xa, SET_PROTOCOL = 0xb
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};
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static void
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usb_hid_destroy (usbdev_t *dev)
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{
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free (dev->data);
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}
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typedef struct {
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void* queue;
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} usbhid_inst_t;
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#define HID_INST(dev) ((usbhid_inst_t*)(dev)->data)
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/* buffer is global to all keyboard drivers */
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int count;
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short keybuffer[16];
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int keypress;
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short keymap[256] = {
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-1, -1, -1, -1, 'a', 'b', 'c', 'd',
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'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
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'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
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'u', 'v', 'w', 'x', 'y', 'z', '1', '2',
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'3', '4', '5', '6', '7', '8', '9', '0',
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'\n', '\e', '\b', '\t', ' ', '-', '=', '[',
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']', '\\', -1, ';', '\'', '`', ',', '.',
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'/', -1, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5), KEY_F(6),
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KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), KEY_F(11), KEY_F(12), -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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/* 50 */
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-1, -1, -1, -1, -1, '*', '-', '+',
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-1, KEY_END, KEY_DOWN, KEY_NPAGE, KEY_LEFT, -1, KEY_RIGHT, KEY_HOME,
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KEY_UP, KEY_PPAGE, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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};
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static void
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usb_hid_poll (usbdev_t *dev)
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{
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u8* buf;
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while ((buf=dev->controller->poll_intr_queue (HID_INST(dev)->queue))) {
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// FIXME: manage buf[0]=special keys, too
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int i;
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keypress = 0;
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for (i=2; i<9; i++) {
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if (buf[i] != 0)
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keypress = keymap[buf[i]];
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else
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break;
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}
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if ((keypress == -1) && (buf[2] != 0)) {
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printf ("%x %x %x %x %x %x %x %x\n", buf[0], buf[1], buf[2],
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buf[3], buf[4], buf[5], buf[6], buf[7]);
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}
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if (keypress != -1) {
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/* ignore key presses if buffer full */
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if (count < 16)
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keybuffer[count++] = keypress;
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}
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}
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}
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static void
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usb_hid_set_idle (usbdev_t *dev, interface_descriptor_t *interface, u16 duration)
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{
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dev_req_t dr;
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dr.data_dir = host_to_device;
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dr.req_type = class_type;
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dr.req_recp = iface_recp;
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dr.bRequest = SET_IDLE;
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dr.wValue = (duration >> 2) << 8;
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dr.wIndex = interface->bInterfaceNumber;
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dr.wLength = 0;
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dev->controller->control (dev, OUT, sizeof (dev_req_t), &dr, 0, 0);
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}
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static void
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usb_hid_set_protocol (usbdev_t *dev, interface_descriptor_t *interface, hid_proto proto)
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{
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dev_req_t dr;
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dr.data_dir = host_to_device;
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dr.req_type = class_type;
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dr.req_recp = iface_recp;
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dr.bRequest = SET_PROTOCOL;
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dr.wValue = proto;
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dr.wIndex = interface->bInterfaceNumber;
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dr.wLength = 0;
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dev->controller->control (dev, OUT, sizeof (dev_req_t), &dr, 0, 0);
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}
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static struct console_input_driver cons = {
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.havekey = usbhid_havechar,
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.getchar = usbhid_getchar
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};
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void
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usb_hid_init (usbdev_t *dev)
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{
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static int installed = 0;
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if (!installed) {
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installed = 1;
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console_add_input_driver (&cons);
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}
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configuration_descriptor_t *cd = (configuration_descriptor_t*)dev->configuration;
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interface_descriptor_t *interface = (interface_descriptor_t*)(((char *) cd) + cd->bLength);
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if (interface->bInterfaceSubClass == hid_subclass_boot) {
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printf (" supports boot interface..\n");
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printf (" it's a %s\n",
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boot_protos[interface->bInterfaceProtocol]);
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if (interface->bInterfaceProtocol == hid_boot_proto_keyboard) {
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dev->data = malloc (sizeof (usbhid_inst_t));
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printf (" configuring...\n");
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usb_hid_set_protocol(dev, interface, hid_proto_boot);
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usb_hid_set_idle(dev, interface, 0);
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printf (" activating...\n");
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// only add here, because we only support boot-keyboard HID devices
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dev->destroy = usb_hid_destroy;
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dev->poll = usb_hid_poll;
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int i;
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for (i = 0; i <= dev->num_endp; i++) {
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if (dev->endpoints[i].endpoint == 0)
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continue;
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if (dev->endpoints[i].type != INTERRUPT)
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continue;
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if (dev->endpoints[i].direction != IN)
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continue;
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break;
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}
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printf (" found endpoint %x for interrupt-in\n", i);
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/* 20 buffers of 8 bytes, for every 10 msecs */
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HID_INST(dev)->queue = dev->controller->create_intr_queue (&dev->endpoints[i], 8, 20, 10);
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count = 0;
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printf (" configuration done.\n");
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}
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}
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}
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int usbhid_havechar (void)
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{
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return (count != 0);
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}
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int usbhid_getchar (void)
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{
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if (count == 0) return 0;
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short ret = keybuffer[0];
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memmove (keybuffer, keybuffer+1, --count);
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return ret;
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}
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