| 0,0 → 1,110 |
|---|
| /* |
| * Copyright (c) 2005 Jakub Jermar |
| * Copyright (c) 2009 Jiri Svoboda |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup kbd_port |
| * @ingroup kbd |
| * @{ |
| */ |
| /** @file |
| * @brief Ski console keyboard port driver. |
| */ |
| |
| |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <kbd.h> |
| #include <kbd_port.h> |
| #include <sys/types.h> |
| #include <thread.h> |
| |
| #define SKI_GETCHAR 21 |
| |
| #define POLL_INTERVAL 10000 |
| |
| static void *ski_thread_impl(void *arg); |
| static int32_t ski_getchar(void); |
| |
| /** Initialize Ski port driver. */ |
| int kbd_port_init(void) |
| { |
| thread_id_t tid; |
| int rc; |
| |
| rc = thread_create(ski_thread_impl, NULL, "kbd_poll", &tid); |
| if (rc != 0) { |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| /** Thread to poll Ski for keypresses. */ |
| static void *ski_thread_impl(void *arg) |
| { |
| int32_t c; |
| (void) arg; |
| |
| while (1) { |
| while (1) { |
| c = ski_getchar(); |
| if (c == 0) |
| break; |
| kbd_push_scancode(c); |
| } |
| |
| usleep(POLL_INTERVAL); |
| } |
| } |
| |
| /** Ask Ski if a key was pressed. |
| * |
| * Use SSC (Simulator System Call) to get character from the debug console. |
| * This call is non-blocking. |
| * |
| * @return ASCII code of pressed key or 0 if no key pressed. |
| */ |
| static int32_t ski_getchar(void) |
| { |
| uint64_t ch; |
| |
| asm volatile ( |
| "mov r15 = %1\n" |
| "break 0x80000;;\n" /* modifies r8 */ |
| "mov %0 = r8;;\n" |
| |
| : "=r" (ch) |
| : "i" (SKI_GETCHAR) |
| : "r15", "r8" |
| ); |
| |
| return (int32_t) ch; |
| } |
| |
| /** @} |
| */ |