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path: root/bsp/x86/drivers/keyboard.c
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Diffstat (limited to 'bsp/x86/drivers/keyboard.c')
-rw-r--r--bsp/x86/drivers/keyboard.c542
1 files changed, 271 insertions, 271 deletions
diff --git a/bsp/x86/drivers/keyboard.c b/bsp/x86/drivers/keyboard.c
index 61f2846dc6..4890db380b 100644
--- a/bsp/x86/drivers/keyboard.c
+++ b/bsp/x86/drivers/keyboard.c
@@ -19,290 +19,290 @@
#define FALSE RT_FALSE
#define TRUE RT_TRUE
#define PRIVATE static
-#define PUBLIC
+#define PUBLIC
#define t_bool rt_bool_t
#define t_8 rt_uint8_t
#define t_32 rt_uint32_t
-PRIVATE KB_INPUT kb_in;
-PRIVATE t_bool code_with_E0 = FALSE;
-PRIVATE t_bool shift_l; /* l shift state */
-PRIVATE t_bool shift_r; /* r shift state */
-PRIVATE t_bool alt_l; /* l alt state */
-PRIVATE t_bool alt_r; /* r left state */
-PRIVATE t_bool ctrl_l; /* l ctrl state */
-PRIVATE t_bool ctrl_r; /* l ctrl state */
-PRIVATE t_bool caps_lock; /* Caps Lock */
-PRIVATE t_bool num_lock; /* Num Lock */
-PRIVATE t_bool scroll_lock; /* Scroll Lock */
-PRIVATE int column = 0; /* keyrow[column] is one value of keymap */
+PRIVATE KB_INPUT kb_in;
+PRIVATE t_bool code_with_E0 = FALSE;
+PRIVATE t_bool shift_l; /* l shift state */
+PRIVATE t_bool shift_r; /* r shift state */
+PRIVATE t_bool alt_l; /* l alt state */
+PRIVATE t_bool alt_r; /* r left state */
+PRIVATE t_bool ctrl_l; /* l ctrl state */
+PRIVATE t_bool ctrl_r; /* l ctrl state */
+PRIVATE t_bool caps_lock; /* Caps Lock */
+PRIVATE t_bool num_lock; /* Num Lock */
+PRIVATE t_bool scroll_lock; /* Scroll Lock */
+PRIVATE int column = 0; /* keyrow[column] is one value of keymap */
-PRIVATE t_8 get_byte_from_kb_buf();
-PRIVATE void set_leds();
-PRIVATE void kb_wait();
-PRIVATE void kb_ack();
+PRIVATE t_8 get_byte_from_kb_buf();
+PRIVATE void set_leds();
+PRIVATE void kb_wait();
+PRIVATE void kb_ack();
PUBLIC void init_keyboard()
{
- kb_in.count = 0;
- kb_in.p_head = kb_in.p_tail = kb_in.buf;
+ kb_in.count = 0;
+ kb_in.p_head = kb_in.p_tail = kb_in.buf;
- caps_lock = 0;
- num_lock = 1;
- scroll_lock = 0;
+ caps_lock = 0;
+ num_lock = 1;
+ scroll_lock = 0;
- set_leds();
+ set_leds();
}
PUBLIC rt_bool_t keyboard_read(rt_uint32_t *pkey)
{
- t_8 scan_code;
- t_bool make; /* TRUE : make */
- /* FALSE: break */
- t_32 key = 0;
- t_32* keyrow;
+ t_8 scan_code;
+ t_bool make; /* TRUE : make */
+ /* FALSE: break */
+ t_32 key = 0;
+ t_32* keyrow;
- if(kb_in.count > 0){
- code_with_E0 = FALSE;
- scan_code = get_byte_from_kb_buf();
+ if(kb_in.count > 0){
+ code_with_E0 = FALSE;
+ scan_code = get_byte_from_kb_buf();
- /* start scan */
- if (scan_code == 0xE1) {
- int i;
- static const 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();
+ /* start scan */
+ if (scan_code == 0xE1) {
+ int i;
+ static const 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 pressed */
- 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 released */
- 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;
- }
- }
- }
- } /* if is not PrintScreen, scan_code is the one after 0xE0 */
- if ((key != PAUSEBREAK) && (key != PRINTSCREEN)) {
- /* is Make Code or Break Code */
- make = (scan_code & FLAG_BREAK ? FALSE : TRUE);
-
- keyrow = &keymap[(scan_code & 0x7F) * MAP_COLS];
+ /* PrintScreen pressed */
+ 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 released */
+ 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;
+ }
+ }
+ }
+ } /* if is not PrintScreen, scan_code is the one after 0xE0 */
+ if ((key != PAUSEBREAK) && (key != PRINTSCREEN)) {
+ /* is Make Code or Break Code */
+ make = (scan_code & FLAG_BREAK ? FALSE : TRUE);
- column = 0;
+ keyrow = &keymap[(scan_code & 0x7F) * MAP_COLS];
- t_bool caps = shift_l || shift_r;
- if (caps_lock) {
- if ((keyrow[0] >= 'a') && (keyrow[0] <= 'z')){
- caps = !caps;
- }
- }
- if (caps) {
- column = 1;
- }
+ column = 0;
- if (code_with_E0) {
- column = 2;
- }
+ t_bool caps = shift_l || shift_r;
+ if (caps_lock) {
+ if ((keyrow[0] >= 'a') && (keyrow[0] <= 'z')){
+ caps = !caps;
+ }
+ }
+ if (caps) {
+ column = 1;
+ }
- key = keyrow[column];
+ if (code_with_E0) {
+ column = 2;
+ }
- 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;
- }
- }
+ key = keyrow[column];
- if(make){ /* ignore Break Code */
- t_bool pad = FALSE;
+ 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;
+ }
+ }
- /* handle the small pad first */
- 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;
+ if(make){ /* ignore Break Code */
+ t_bool pad = FALSE;
- *pkey = key;
- return TRUE;
- }
- }
+ /* handle the small pad first */
+ 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;
- return FALSE;
+ *pkey = key;
+ return TRUE;
+ }
+ }
+
+ return FALSE;
}
PRIVATE t_8 get_byte_from_kb_buf()
{
- t_8 scan_code;
+ t_8 scan_code;
- RT_ASSERT(kb_in.count>0);
- scan_code = *(kb_in.p_tail);
- kb_in.p_tail++;
- if (kb_in.p_tail == kb_in.buf + KB_IN_BYTES) {
- kb_in.p_tail = kb_in.buf;
- }
- kb_in.count--;
+ RT_ASSERT(kb_in.count>0);
+ scan_code = *(kb_in.p_tail);
+ kb_in.p_tail++;
+ if (kb_in.p_tail == kb_in.buf + KB_IN_BYTES) {
+ kb_in.p_tail = kb_in.buf;
+ }
+ kb_in.count--;
- return scan_code;
+ return scan_code;
}
PRIVATE void kb_wait() /* wait inpit cache of 8042 */
{
- t_8 kb_stat;
+ t_8 kb_stat;
- do {
- kb_stat = inb(KB_CMD);
- } while (kb_stat & 0x02);
+ do {
+ kb_stat = inb(KB_CMD);
+ } while (kb_stat & 0x02);
}
PRIVATE void kb_ack()
{
- t_8 kb_read;
+ t_8 kb_read;
- do {
- kb_read = inb(KB_DATA);
- } while (kb_read != KB_ACK);
+ do {
+ kb_read = inb(KB_DATA);
+ } while (kb_read != KB_ACK);
}
PRIVATE void set_leds()
{
- t_8 leds = (caps_lock << 2) | (num_lock << 1) | scroll_lock;
+ t_8 leds = (caps_lock << 2) | (num_lock << 1) | scroll_lock;
- kb_wait();
- outb(KB_DATA, LED_CODE);
- kb_ack();
+ kb_wait();
+ outb(KB_DATA, LED_CODE);
+ kb_ack();
- kb_wait();
- outb(KB_DATA, leds);
- kb_ack();
+ kb_wait();
+ outb(KB_DATA, leds);
+ kb_ack();
}
/**
@@ -312,51 +312,51 @@ PRIVATE void set_leds()
void rt_keyboard_isr(void)
{
- rt_uint8_t data;
+ rt_uint8_t data;
- if ((inb(KBSTATP) & KBS_DIB) == 0)
- return ;
+ if ((inb(KBSTATP) & KBS_DIB) == 0)
+ return ;
- data = inb(KBDATAP);
+ data = inb(KBDATAP);
- if (kb_in.count < KB_IN_BYTES) {
- *(kb_in.p_head) = data;
- kb_in.p_head++;
- if (kb_in.p_head == kb_in.buf + KB_IN_BYTES) {
- kb_in.p_head = kb_in.buf;
- }
- kb_in.count++;
- }
+ if (kb_in.count < KB_IN_BYTES) {
+ *(kb_in.p_head) = data;
+ kb_in.p_head++;
+ if (kb_in.p_head == kb_in.buf + KB_IN_BYTES) {
+ kb_in.p_head = kb_in.buf;
+ }
+ kb_in.count++;
+ }
}
/* generally, this should be called in task level for all key inpit support,
but here only support a key that is composed of 2 bytes */
rt_bool_t rt_keyboard_getc(char* c)
{
- if(kb_in.count>=2)
- {
- rt_uint32_t key = 0;
- rt_bool_t rv=keyboard_read(&key);
+ if(kb_in.count>=2)
+ {
+ rt_uint32_t key = 0;
+ rt_bool_t rv=keyboard_read(&key);
- switch(key)
- {
- case TAB:
- *c = '\t';
- break;
- case ENTER:
- *c = '\n';
- break;
- case BACKSPACE:
- *c = '\b';
- break;
- default:
- *c = key;
- break;
- }
+ switch(key)
+ {
+ case TAB:
+ *c = '\t';
+ break;
+ case ENTER:
+ *c = '\n';
+ break;
+ case BACKSPACE:
+ *c = '\b';
+ break;
+ default:
+ *c = key;
+ break;
+ }
- return rv;
- }
+ return rv;
+ }
- return RT_FALSE;
+ return RT_FALSE;
}
/*@}*/
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-25 05:08:08 +0000