void do_kbd(void)
{
static uint8_t kbd_timeout = KBD_TIMEOUT;
if (!kbd_timeout--)
{
kbd_timeout = KBD_TIMEOUT;
kbd_scan();
}
}
static void
kbd_server(cyg_addrword_t p)
{
int col, bit, key, event, timeout;
diag_printf("KBD server here\n");
while (TRUE) {
cyg_semaphore_wait(&kbd_sem);
// As long as keys are pressed, scan and update
timeout = 0;
while (TRUE) {
// Wait for 20ms - time to debounce keyboard
cyg_thread_delay(2);
// Scan keyboard
kbd_scan();
// Reset state
for (key = 0; key < sizeof(kbd_new_state); key++) {
kbd_new_state[key] = 0;
}
// Check state of all keys and send events for those that change
for (col = 0; col < 8; col++) {
for (bit = 0; bit < 8; bit++) {
if (col_state[col] & (1<<bit)) {
key = kbd_map[col][bit];
if (key != KBD_Empty) {
kbd_new_state[key] = 1;
}
}
if (ext_state[col] & (1<<bit)) {
key = kbd_map[col][bit+8];
if (key != KBD_Empty) {
kbd_new_state[key] = 1;
}
}
}
}
// Compare new and old (known) states, generate events for changes
// Send events for modifier keys first.
for (key = 0; key < sizeof(kbd_new_state); key++) {
if (kbd_state[key] != kbd_new_state[key]) {
event = 0xFF;
switch (key) {
case KBD_LeftShift:
case KBD_RightShift:
case KBD_Ctrl:
case KBD_LeftAlt:
case KBD_RightAlt:
case KBD_Function:
case KBD_CapsLock:
if (kbd_state[key]) {
// Key going up
event = key;
} else {
// Key going down
event = key + KBD_Press;
}
kbd_state[key] = kbd_new_state[key];
}
if (event != 0xFF) {
if (!cyg_mbox_tryput(kbd_events_mbox_handle, (void *)event)) {
diag_printf("KBD event lost: %x\n", event);
}
}
}
}
// First key up events
for (key = 0; key < sizeof(kbd_new_state); key++) {
if (kbd_state[key] != kbd_new_state[key]) {
if (kbd_state[key]) {
// Key going up
event = key;
} else {
// Key going down
event = key + KBD_Press;
}
if (!cyg_mbox_tryput(kbd_events_mbox_handle, (void *)event)) {
diag_printf("KBD event lost: %x\n", event);
}
}
kbd_state[key] = kbd_new_state[key];
}
// Clear interrupt (true when keys are pressed)
cyg_drv_interrupt_acknowledge(CYGNUM_HAL_INTERRUPT_KBDINT);
#if 0
if (*(volatile cyg_uint32 *)INTSR2 & INTSR2_KBDINT) {
timeout = 0;
} else if (++timeout == 5) {
// No keys for 100ms
break;
}
#endif
}
// Allow interrupts to happen again
cyg_drv_interrupt_acknowledge(CYGNUM_HAL_INTERRUPT_KBDINT);
cyg_drv_interrupt_unmask(CYGNUM_HAL_INTERRUPT_KBDINT);
}
}
int kbd_test_scan(unsigned short ass) {
kbd_scan(ass);
//else kbd_scan_ass;
}
