/*======================================================================*
keyboard_read
*======================================================================*/
PUBLIC void keyboard_read(TTY* p_tty)
{
t_8 scan_code;
t_bool make; /* TRUE : make */
/* FALSE: break */
t_32 key = 0;/* 用一个整型来表示一个键。 */
/* 比如，如果 Home 被按下，则 key 值将为定义在 keyboard.h 中的 'HOME'。*/
t_32* keyrow; /* 指向 keymap[] 的某一行 */
if(kb_in.count > 0){
code_with_E0 = FALSE;
scan_code = get_byte_from_kb_buf();
/* 下面开始解析扫描码 */
if (scan_code == 0xE1) {
int i;
t_8 pausebreak_scan_code[] = {0xE1, 0x1D, 0x45, 0xE1, 0x9D, 0xC5};
t_bool is_pausebreak = TRUE;
for(i=1;i<6;i++){
if (get_byte_from_kb_buf() != pausebreak_scan_code[i]) {
is_pausebreak = FALSE;
break;
}
}
if (is_pausebreak) {
key = PAUSEBREAK;
}
}
else if (scan_code == 0xE0) {
scan_code = get_byte_from_kb_buf();
/* PrintScreen 被按下 */
if (scan_code == 0x2A) {
if (get_byte_from_kb_buf() == 0xE0) {
if (get_byte_from_kb_buf() == 0x37) {
key = PRINTSCREEN;
make = TRUE;
}
}
}
/* PrintScreen 被释放 */
if (scan_code == 0xB7) {
if (get_byte_from_kb_buf() == 0xE0) {
if (get_byte_from_kb_buf() == 0xAA) {
key = PRINTSCREEN;
make = FALSE;
}
}
}
/* 不是 PrintScreen。此时 scan_code 为 0xE0 紧跟的那个值。 */
if (key == 0) {
code_with_E0 = TRUE;
}
}
if ((key != PAUSEBREAK) && (key != PRINTSCREEN)) {
/* 首先判断Make Code 还是 Break Code */
make = (scan_code & FLAG_BREAK ? FALSE : TRUE);
/* 先定位到 keymap 中的行 */
keyrow = &keymap[(scan_code & 0x7F) * MAP_COLS];
column = 0;
if (shift_l || shift_r) {
column = 1;
}
if (code_with_E0) {
column = 2;
}
key = keyrow[column];
switch(key) {
case SHIFT_L:
shift_l = make;
break;
case SHIFT_R:
shift_r = make;
break;
case CTRL_L:
ctrl_l = make;
break;
case CTRL_R:
ctrl_r = make;
break;
case ALT_L:
alt_l = make;
break;
case ALT_R:
alt_l = make;
break;
default:
break;
}
}
if(make){ /* 忽略 Break Code */
key |= shift_l ? FLAG_SHIFT_L : 0;
key |= shift_r ? FLAG_SHIFT_R : 0;
key |= ctrl_l ? FLAG_CTRL_L : 0;
key |= ctrl_r ? FLAG_CTRL_R : 0;
key |= alt_l ? FLAG_ALT_L : 0;
key |= alt_r ? FLAG_ALT_R : 0;
in_process(p_tty, key);
}
}
}
/*======================================================================*
keyboard_read
*======================================================================*/
PUBLIC void keyboard_read(TTY* p_tty)
{
t_8 scan_code;
t_bool make; /* TRUE : make */
/* FALSE: break */
t_32 key = 0;/* 用一个整型来表示一个键。 */
/* 比如，如果 Home 被按下，则 key 值将为定义在 keyboard.h 中的 'HOME'。*/
t_32* keyrow; /* 指向 keymap[] 的某一行 */
if(kb_in.count > 0){
code_with_E0 = FALSE;
scan_code = get_byte_from_kb_buf();
/* 下面开始解析扫描码 */
if (scan_code == 0xE1) {
int i;
t_8 pausebreak_scan_code[] = {0xE1, 0x1D, 0x45, 0xE1, 0x9D, 0xC5};
t_bool is_pausebreak = TRUE;
for(i=1;i<6;i++){
if (get_byte_from_kb_buf() != pausebreak_scan_code[i]) {
is_pausebreak = FALSE;
break;
}
}
if (is_pausebreak) {
key = PAUSEBREAK;
}
}
else if (scan_code == 0xE0) {
code_with_E0 = TRUE;
scan_code = get_byte_from_kb_buf();
/* PrintScreen 被按下 */
if (scan_code == 0x2A) {
code_with_E0 = FALSE;
if ((scan_code = get_byte_from_kb_buf()) == 0xE0) {
code_with_E0 = TRUE;
if ((scan_code = get_byte_from_kb_buf()) == 0x37) {
key = PRINTSCREEN;
make = TRUE;
}
}
}
/* PrintScreen 被释放 */
else if (scan_code == 0xB7) {
code_with_E0 = FALSE;
if ((scan_code = get_byte_from_kb_buf()) == 0xE0) {
code_with_E0 = TRUE;
if ((scan_code = get_byte_from_kb_buf()) == 0xAA) {
key = PRINTSCREEN;
make = FALSE;
}
}
}
} /* 如果不是 PrintScreen。则此时 scan_code 为 0xE0 紧跟的那个值。 */
if ((key != PAUSEBREAK) && (key != PRINTSCREEN)) {
/* 首先判断Make Code 还是 Break Code */
make = (scan_code & FLAG_BREAK ? FALSE : TRUE);
/* 先定位到 keymap 中的行 */
keyrow = &keymap[(scan_code & 0x7F) * MAP_COLS];
column = 0;
t_bool caps = shift_l || shift_r;
if (caps_lock) {
if ((keyrow[0] >= 'a') && (keyrow[0] <= 'z')){
caps = !caps;
}
}
if (caps) {
column = 1;
}
if (code_with_E0) {
column = 2;
}
key = keyrow[column];
switch(key) {
case SHIFT_L:
shift_l = make;
break;
case SHIFT_R:
shift_r = make;
break;
case CTRL_L:
ctrl_l = make;
break;
case CTRL_R:
ctrl_r = make;
break;
case ALT_L:
alt_l = make;
break;
case ALT_R:
alt_l = make;
break;
case CAPS_LOCK:
if (make) {
caps_lock = !caps_lock;
set_leds();
}
break;
case NUM_LOCK:
if (make) {
num_lock = !num_lock;
set_leds();
}
break;
case SCROLL_LOCK:
if (make) {
scroll_lock = !scroll_lock;
set_leds();
}
break;
default:
break;
}
}
if(make){ /* 忽略 Break Code */
t_bool pad = FALSE;
/* 首先处理小键盘 */
if ((key >= PAD_SLASH) && (key <= PAD_9)) {
pad = TRUE;
switch(key) { /* '/', '*', '-', '+', and 'Enter' in num pad */
case PAD_SLASH:
key = '/';
break;
case PAD_STAR:
key = '*';
break;
case PAD_MINUS:
key = '-';
break;
case PAD_PLUS:
key = '+';
break;
case PAD_ENTER:
key = ENTER;
break;
default: /* keys whose value depends on the NumLock */
if (num_lock) { /* '0' ~ '9' and '.' in num pad */
if ((key >= PAD_0) && (key <= PAD_9)) {
key = key - PAD_0 + '0';
}
else if (key == PAD_DOT) {
key = '.';
}
}
else{
switch(key) {
case PAD_HOME:
key = HOME;
break;
case PAD_END:
key = END;
break;
case PAD_PAGEUP:
key = PAGEUP;
break;
case PAD_PAGEDOWN:
key = PAGEDOWN;
break;
case PAD_INS:
key = INSERT;
break;
case PAD_UP:
key = UP;
break;
case PAD_DOWN:
key = DOWN;
break;
case PAD_LEFT:
key = LEFT;
break;
case PAD_RIGHT:
key = RIGHT;
break;
case PAD_DOT:
key = DELETE;
break;
default:
break;
}
}
break;
}
}
key |= shift_l ? FLAG_SHIFT_L : 0;
key |= shift_r ? FLAG_SHIFT_R : 0;
key |= ctrl_l ? FLAG_CTRL_L : 0;
key |= ctrl_r ? FLAG_CTRL_R : 0;
key |= alt_l ? FLAG_ALT_L : 0;
key |= alt_r ? FLAG_ALT_R : 0;
key |= pad ? FLAG_PAD : 0;
in_process(p_tty, key);
}
}
}
/**
* Yes, it is an ugly function.
*
* @param tty Which TTY is reading the keyboard input.
*****************************************************************************/
PUBLIC void keyboard_read(TTY* tty)
{
u8 scan_code;
/**
* 1 : make
* 0 : break
*/
int make;
/**
* We use a integer to record a key press.
* For instance, if the key HOME is pressed, key will be evaluated to
* `HOME' defined in keyboard.h.
*/
u32 key = 0;
/**
* This var points to a row in keymap[]. I don't use two-dimension
* array because I don't like it.
*/
u32* keyrow;
while (kb_in.count > 0) {
code_with_E0 = 0;
scan_code = get_byte_from_kb_buf();
/* parse the scan code below */
if (scan_code == 0xE1) {
int i;
u8 pausebreak_scan_code[] = {0xE1, 0x1D, 0x45, 0xE1, 0x9D, 0xC5};
int is_pausebreak = 1;
for (i = 1; i < 6; i++) {
if (get_byte_from_kb_buf() != pausebreak_scan_code[i]) {
is_pausebreak = 0;
break;
}
}
if (is_pausebreak) {
key = PAUSEBREAK;
}
}
else if (scan_code == 0xE0) {
code_with_E0 = 1;
scan_code = get_byte_from_kb_buf();
/* PrintScreen is pressed */
if (scan_code == 0x2A) {
code_with_E0 = 0;
if ((scan_code = get_byte_from_kb_buf()) == 0xE0) {
code_with_E0 = 1;
if ((scan_code = get_byte_from_kb_buf()) == 0x37) {
key = PRINTSCREEN;
make = 1;
}
}
}
/* PrintScreen is released */
else if (scan_code == 0xB7) {
code_with_E0 = 0;
if ((scan_code = get_byte_from_kb_buf()) == 0xE0) {
code_with_E0 = 1;
if ((scan_code = get_byte_from_kb_buf()) == 0xAA) {
key = PRINTSCREEN;
make = 0;
}
}
}
}
if ((key != PAUSEBREAK) && (key != PRINTSCREEN)) {
int caps;
/* make or break */
make = (scan_code & FLAG_BREAK ? 0 : 1);
keyrow = &keymap[(scan_code & 0x7F) * MAP_COLS];
column = 0;
caps = shift_l || shift_r;
if (caps_lock &&
keyrow[0] >= 'a' && keyrow[0] <= 'z')
caps = !caps;
if (caps)
column = 1;
if (code_with_E0)
column = 2;
key = keyrow[column];
switch(key) {
case SHIFT_L:
shift_l = make;
break;
case SHIFT_R:
shift_r = make;
break;
case CTRL_L:
ctrl_l = make;
break;
case CTRL_R:
ctrl_r = make;
break;
case ALT_L:
alt_l = make;
break;
case ALT_R:
alt_l = make;
break;
case CAPS_LOCK:
if (make) {
caps_lock = !caps_lock;
set_leds();
}
break;
case NUM_LOCK:
if (make) {
num_lock = !num_lock;
set_leds();
}
break;
case SCROLL_LOCK:
if (make) {
scroll_lock = !scroll_lock;
set_leds();
}
break;
default:
break;
}
}
if(make){ /* Break Code is ignored */
int pad = 0;
/* deal with the numpad first */
if ((key >= PAD_SLASH) && (key <= PAD_9)) {
pad = 1;
switch(key) { /* '/', '*', '-', '+',
* and 'Enter' in num pad
*/
case PAD_SLASH:
key = '/';
break;
case PAD_STAR:
key = '*';
break;
case PAD_MINUS:
key = '-';
break;
case PAD_PLUS:
key = '+';
break;
case PAD_ENTER:
key = ENTER;
break;
default:
/* the value of these keys
* depends on the Numlock
*/
if (num_lock) { /* '0' ~ '9' and '.' in num pad */
if (key >= PAD_0 && key <= PAD_9)
key = key - PAD_0 + '0';
else if (key == PAD_DOT)
key = '.';
}
else{
switch(key) {
case PAD_HOME:
key = HOME;
break;
case PAD_END:
key = END;
break;
case PAD_PAGEUP:
key = PAGEUP;
break;
case PAD_PAGEDOWN:
key = PAGEDOWN;
break;
case PAD_INS:
key = INSERT;
break;
case PAD_UP:
key = UP;
break;
case PAD_DOWN:
key = DOWN;
break;
case PAD_LEFT:
key = LEFT;
break;
case PAD_RIGHT:
key = RIGHT;
break;
case PAD_DOT:
key = DELETE;
break;
default:
break;
}
}
break;
}
}
key |= shift_l ? FLAG_SHIFT_L : 0;
key |= shift_r ? FLAG_SHIFT_R : 0;
key |= ctrl_l ? FLAG_CTRL_L : 0;
key |= ctrl_r ? FLAG_CTRL_R : 0;
key |= alt_l ? FLAG_ALT_L : 0;
key |= alt_r ? FLAG_ALT_R : 0;
key |= pad ? FLAG_PAD : 0;
in_process(tty, key);
}
}
}
void keyboard_read()
{
uint8_t scan_code;
int make = 0;
uint32_t key = 0;
uint32_t* keyrow;
while (kbdbuf.count > 0) {
code_with_E0 = 0;
scan_code = get_byte_from_kb_buf();
/* parse the scan code below */
if (scan_code == 0xE1) {
int i;
uint8_t pausebreak_scan_code[] = {0xE1, 0x1D, 0x45, 0xE1, 0x9D, 0xC5};
int is_pausebreak = 1;
for (i = 1; i < 6; i++) {
if (get_byte_from_kb_buf() != pausebreak_scan_code[i]) {
is_pausebreak = 0;
break;
}
}
if (is_pausebreak) {
key = PAUSEBREAK;
}
}
else if (scan_code == 0xE0) {
code_with_E0 = 1;
scan_code = get_byte_from_kb_buf();
/* PrintScreen is pressed */
if (scan_code == 0x2A) {
code_with_E0 = 0;
if ((scan_code = get_byte_from_kb_buf()) == 0xE0) {
code_with_E0 = 1;
if ((scan_code = get_byte_from_kb_buf()) == 0x37) {
key = PRINTSCREEN;
make = 1;
}
}
}
/* PrintScreen is released */
else if (scan_code == 0xB7) {
code_with_E0 = 0;
if ((scan_code = get_byte_from_kb_buf()) == 0xE0) {
code_with_E0 = 1;
if ((scan_code = get_byte_from_kb_buf()) == 0xAA) {
key = PRINTSCREEN;
make = 0;
}
}
}
}
if ((key != PAUSEBREAK) && (key != PRINTSCREEN)) {
int caps;
/* make or break */
make = (scan_code & FLAG_BREAK ? 0 : 1);
keyrow = &keymap[(scan_code & 0x7F) * MAP_COLS];
column = 0;
caps = shift_l || shift_r;
if (caps_lock &&
keyrow[0] >= 'a' && keyrow[0] <= 'z')
caps = !caps;
if (caps)
column = 1;
if (code_with_E0)
column = 2;
key = keyrow[column];
switch(key) {
case SHIFT_L:
shift_l = make;
break;
case SHIFT_R:
shift_r = make;
break;
case CTRL_L:
ctrl_l = make;
break;
case CTRL_R:
ctrl_r = make;
break;
case ALT_L:
alt_l = make;
break;
case ALT_R:
alt_l = make;
break;
case CAPS_LOCK:
if (make) {
caps_lock = !caps_lock;
//set_leds();
}
break;
case NUM_LOCK:
if (make) {
num_lock = !num_lock;
//set_leds();
}
break;
case SCROLL_LOCK:
if (make) {
scroll_lock = !scroll_lock;
//set_leds();
}
break;
default:
break;
}
}
if(make){ /* Break Code is ignored */
int pad = 0;
/* deal with the numpad first */
if ((key >= PAD_SLASH) && (key <= PAD_9)) {
pad = 1;
switch(key) { /* '/', '*', '-', '+',
* and 'Enter' in num pad
*/
case PAD_SLASH:
key = '/';
break;
case PAD_STAR:
key = '*';
break;
case PAD_MINUS:
key = '-';
break;
case PAD_PLUS:
key = '+';
break;
case PAD_ENTER:
key = ENTER;
break;
default:
/* the value of these keys
* depends on the Numlock
*/
if (num_lock) { /* '0' ~ '9' and '.' in num pad */
if (key >= PAD_0 && key <= PAD_9)
key = key - PAD_0 + '0';
else if (key == PAD_DOT)
key = '.';
}
else{
switch(key) {
case PAD_HOME:
key = HOME;
break;
case PAD_END:
key = END;
break;
case PAD_PAGEUP:
key = PAGEUP;
break;
case PAD_PAGEDOWN:
key = PAGEDOWN;
break;
case PAD_INS:
key = INSERT;
break;
case PAD_UP:
key = UP;
break;
case PAD_DOWN:
key = DOWN;
break;
case PAD_LEFT:
key = LEFT;
break;
case PAD_RIGHT:
key = RIGHT;
break;
case PAD_DOT:
key = DELETE;
break;
default:
break;
}
}
break;
}
}
key |= shift_l ? FLAG_SHIFT_L : 0;
key |= shift_r ? FLAG_SHIFT_R : 0;
key |= ctrl_l ? FLAG_CTRL_L : 0;
key |= ctrl_r ? FLAG_CTRL_R : 0;
key |= alt_l ? FLAG_ALT_L : 0;
key |= alt_r ? FLAG_ALT_R : 0;
key |= pad ? FLAG_PAD : 0;
handle_key(key);
}
}
}
