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/*
Copyright 2013 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "host.h"
#include "report.h"
#include "debug.h"
#include "action_util.h"
#include "timer.h"
static inline void add_key_byte(uint8_t code);
static inline void del_key_byte(uint8_t code);
#ifdef NKRO_ENABLE
static inline void add_key_bit(uint8_t code);
static inline void del_key_bit(uint8_t code);
#endif
static uint8_t real_mods = 0;
static uint8_t weak_mods = 0;
// TODO: pointer variable is not needed
//report_keyboard_t keyboard_report = {};
report_keyboard_t *keyboard_report = &(report_keyboard_t){};
#ifndef NO_ACTION_ONESHOT
static int8_t oneshot_mods = 0;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
static int16_t oneshot_time = 0;
#endif
#endif
void send_keyboard_report(void) {
keyboard_report->mods = real_mods;
keyboard_report->mods |= weak_mods;
#ifndef NO_ACTION_ONESHOT
if (oneshot_mods) {
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
if (TIMER_DIFF_16(timer_read(), oneshot_time) >= ONESHOT_TIMEOUT) {
dprintf("Oneshot: timeout\n");
clear_oneshot_mods();
}
#endif
keyboard_report->mods |= oneshot_mods;
if (has_anykey()) {
clear_oneshot_mods();
}
}
#endif
host_keyboard_send(keyboard_report);
}
/* key */
void add_key(uint8_t key)
{
#ifdef NKRO_ENABLE
if (keyboard_nkro) {
add_key_bit(key);
return;
}
#endif
add_key_byte(key);
}
void del_key(uint8_t key)
{
#ifdef NKRO_ENABLE
if (keyboard_nkro) {
del_key_bit(key);
return;
}
#endif
del_key_byte(key);
}
void clear_keys(void)
{
// not clear mods
for (int8_t i = 1; i < REPORT_SIZE; i++) {
keyboard_report->raw[i] = 0;
}
}
/* modifier */
uint8_t get_mods(void) { return real_mods; }
void add_mods(uint8_t mods) { real_mods |= mods; }
void del_mods(uint8_t mods) { real_mods &= ~mods; }
void set_mods(uint8_t mods) { real_mods = mods; }
void clear_mods(void) { real_mods = 0; }
/* weak modifier */
uint8_t get_weak_mods(void) { return weak_mods; }
void add_weak_mods(uint8_t mods) { weak_mods |= mods; }
void del_weak_mods(uint8_t mods) { weak_mods &= ~mods; }
void set_weak_mods(uint8_t mods) { weak_mods = mods; }
void clear_weak_mods(void) { weak_mods = 0; }
/* Oneshot modifier */
#ifndef NO_ACTION_ONESHOT
void set_oneshot_mods(uint8_t mods)
{
oneshot_mods = mods;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
oneshot_time = timer_read();
#endif
}
void clear_oneshot_mods(void)
{
oneshot_mods = 0;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
oneshot_time = 0;
#endif
}
#endif
/*
* inspect keyboard state
*/
uint8_t has_anykey(void)
{
uint8_t cnt = 0;
for (uint8_t i = 1; i < REPORT_SIZE; i++) {
if (keyboard_report->raw[i])
cnt++;
}
return cnt;
}
uint8_t has_anymod(void)
{
return bitpop(real_mods);
}
uint8_t get_first_key(void)
{
#ifdef NKRO_ENABLE
if (keyboard_nkro) {
uint8_t i = 0;
for (; i < REPORT_BITS && !keyboard_report->nkro.bits[i]; i++)
;
return i<<3 | biton(keyboard_report->nkro.bits[i]);
}
#endif
return keyboard_report->keys[0];
}
/* local functions */
static inline void add_key_byte(uint8_t code)
{
int8_t i = 0;
int8_t empty = -1;
for (; i < REPORT_KEYS; i++) {
if (keyboard_report->keys[i] == code) {
break;
}
if (empty == -1 && keyboard_report->keys[i] == 0) {
empty = i;
}
}
if (i == REPORT_KEYS) {
if (empty != -1) {
keyboard_report->keys[empty] = code;
}
}
}
static inline void del_key_byte(uint8_t code)
{
for (uint8_t i = 0; i < REPORT_KEYS; i++) {
if (keyboard_report->keys[i] == code) {
keyboard_report->keys[i] = 0;
}
}
}
#ifdef NKRO_ENABLE
static inline void add_key_bit(uint8_t code)
{
if ((code>>3) < REPORT_BITS) {
keyboard_report->nkro.bits[code>>3] |= 1<<(code&7);
} else {
dprintf("add_key_bit: can't add: %02X\n", code);
}
}
static inline void del_key_bit(uint8_t code)
{
if ((code>>3) < REPORT_BITS) {
keyboard_report->nkro.bits[code>>3] &= ~(1<<(code&7));
} else {
dprintf("del_key_bit: can't del: %02X\n", code);
}
}
#endif
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