0,0 → 1,107 |
/* |
* 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) { |
c = ski_getchar(); |
if (c != 0) |
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; |
} |
|
/** @} |
*/ |