/** Get data and parse scancodes.
* @param arg Pointer to xt_kbd_t structure.
* @return Never.
*/
int polling(void *arg)
{
assert(arg);
const xt_kbd_t *kbd = arg;
assert(kbd->parent_sess);
async_exch_t *parent_exch = async_exchange_begin(kbd->parent_sess);
while (1) {
if (!parent_exch)
parent_exch = async_exchange_begin(kbd->parent_sess);
const int *map = scanmap_simple;
size_t map_size = sizeof(scanmap_simple) / sizeof(int);
uint8_t code = 0;
ssize_t size = chardev_read(parent_exch, &code, 1);
/** Ignore AT command reply */
if (code == KBD_ACK || code == KBD_RESEND) {
continue;
}
if (code == KBD_SCANCODE_SET_EXTENDED) {
map = scanmap_e0;
map_size = sizeof(scanmap_e0) / sizeof(int);
size = chardev_read(parent_exch, &code, 1);
// TODO handle print screen
}
/* Invalid read. */
if (size != 1) {
continue;
}
/* Bit 7 indicates press/release */
const kbd_event_type_t type =
(code & 0x80) ? KEY_RELEASE : KEY_PRESS;
code &= ~0x80;
const unsigned key = (code < map_size) ? map[code] : 0;
if (key != 0) {
async_exch_t *exch =
async_exchange_begin(kbd->client_sess);
if (!exch) {
ddf_msg(LVL_ERROR,
"Failed creating exchange.");
continue;
}
async_msg_4(exch, KBDEV_EVENT, type, key, 0, 0);
async_exchange_end(exch);
} else {
ddf_msg(LVL_WARN, "Unknown scancode: %hhx", code);
}
}
}
/** Get data and parse scancodes.
*
* @param arg Pointer to at_kbd_t structure.
*
* @return EIO on error.
*
*/
static int polling(void *arg)
{
const at_kbd_t *kbd = arg;
assert(kbd);
assert(kbd->parent_sess);
async_exch_t *parent_exch = async_exchange_begin(kbd->parent_sess);
while (true) {
if (!parent_exch)
parent_exch = async_exchange_begin(kbd->parent_sess);
uint8_t code = 0;
ssize_t size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
const unsigned int *map;
size_t map_size;
if (code == KBD_SCANCODE_SET_EXTENDED) {
map = scanmap_e0;
map_size = sizeof(scanmap_e0) / sizeof(unsigned int);
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
} else if (code == KBD_SCANCODE_SET_EXTENDED_SPECIAL) {
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0x14)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0x77)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0xe1)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0xf0)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0x14)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0xf0)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code == 0x77)
push_event(kbd->client_sess, KEY_PRESS, KC_BREAK);
continue;
} else {
map = scanmap_simple;
map_size = sizeof(scanmap_simple) / sizeof(unsigned int);
}
kbd_event_type_t type;
if (code == KBD_SCANCODE_KEY_RELEASE) {
type = KEY_RELEASE;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
} else {
type = KEY_PRESS;
}
const unsigned int key = (code < map_size) ? map[code] : 0;
if (key != 0)
push_event(kbd->client_sess, type, key);
else
ddf_msg(LVL_WARN, "Unknown scancode: %hhx", code);
}
}
/** Get data and parse scancodes.
*
* @param arg Pointer to xt_kbd_t structure.
*
* @return EIO on error.
*
*/
static int polling(void *arg)
{
const xt_kbd_t *kbd = arg;
assert(kbd);
assert(kbd->parent_sess);
async_exch_t *parent_exch = async_exchange_begin(kbd->parent_sess);
while (true) {
if (!parent_exch)
parent_exch = async_exchange_begin(kbd->parent_sess);
const unsigned int *map = scanmap_simple;
size_t map_size = sizeof(scanmap_simple) / sizeof(unsigned int);
uint8_t code = 0;
ssize_t size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
/* Ignore AT command reply */
if ((code == KBD_ACK) || (code == KBD_RESEND))
continue;
/* Extended set */
if (code == KBD_SCANCODE_SET_EXTENDED) {
map = scanmap_e0;
map_size = sizeof(scanmap_e0) / sizeof(unsigned int);
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
/* Handle really special keys */
if (code == 0x2a) { /* Print Screen */
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0xe0)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code == 0x37)
push_event(kbd->client_sess, KEY_PRESS, KC_PRTSCR);
continue;
}
if (code == 0x46) { /* Break */
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0xe0)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code == 0xc6)
push_event(kbd->client_sess, KEY_PRESS, KC_BREAK);
continue;
}
}
/* Extended special set */
if (code == KBD_SCANCODE_SET_EXTENDED_SPECIAL) {
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0x1d)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0x45)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0xe1)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code != 0x9d)
continue;
size = chardev_read(parent_exch, &code, 1);
if (size != 1)
return EIO;
if (code == 0xc5)
push_event(kbd->client_sess, KEY_PRESS, KC_PAUSE);
continue;
}
/* Bit 7 indicates press/release */
const kbd_event_type_t type =
(code & 0x80) ? KEY_RELEASE : KEY_PRESS;
code &= ~0x80;
const unsigned int key = (code < map_size) ? map[code] : 0;
if (key != 0)
push_event(kbd->client_sess, type, key);
else
ddf_msg(LVL_WARN, "Unknown scancode: %hhx", code);
}
}
