int kbdtest(void)
{
int i;
printf("keyboard test\n");
printf("check keyboard...");
if(kbd_initialize())
{
printf("failed\n");
}
else
{
printf("ok\n");
printf("test kbd leds\n");
printf("num Lock off");
for(i=0;i<3;i++)
{
printf("\b\b\b on");
pckbd_leds(2);
delay1(1000);
pckbd_leds(0);
printf("\b\b\boff");
delay1(1000);
}
printf("\ncaps Lock off");
for(i=0;i<3;i++)
{
printf("\b\b\b on");
pckbd_leds(4);
delay1(1000);
pckbd_leds(0);
printf("\b\b\boff");
delay1(1000);
}
printf("\nscroll Lock off");
for(i=0;i<3;i++)
{
printf("\b\b\b on");
pckbd_leds(1);
delay1(1000);
pckbd_leds(0);
printf("\b\b\boff");
delay1(1000);
}
printf("\n");
printf("press key test,wait 10s to quit\n");
while(1)
{
kbd_test=1;
kbd_test_hit=0;
delay1(10000);
if(!kbd_test_hit){
kbd_test=0;
break;
}
}
}
return 0;
}
void handle_scancode(unsigned char scancode)
{
unsigned char keycode;
/* Convert scancode to keycode */
PRINTF("scancode %x\n",scancode);
if(scancode==0xe0) {
e0=1; /* special charakters */
return;
}
if(e0==1) {
e0=0; /* delete flag */
if(!( ((scancode&0x7F)==0x38)|| /* the right ctrl key */
((scancode&0x7F)==0x1D)|| /* the right alt key */
((scancode&0x7F)==0x35)|| /* the right '/' key */
((scancode&0x7F)==0x1C) )) /* the right enter key */
/* we swallow unknown e0 codes */
return;
}
/* special cntrl keys */
switch(scancode) {
case 0x2A:
case 0x36: /* shift pressed */
shift=1;
return; /* do nothing else */
case 0xAA:
case 0xB6: /* shift released */
shift=0;
return; /* do nothing else */
case 0x38: /* alt pressed */
alt=1;
return; /* do nothing else */
case 0xB8: /* alt released */
alt=0;
return; /* do nothing else */
case 0x1d: /* ctrl pressed */
ctrl=1;
return; /* do nothing else */
case 0x9d: /* ctrl released */
ctrl=0;
return; /* do nothing else */
case 0x46: /* scrollock pressed */
scroll_lock=~scroll_lock;
if(scroll_lock==0)
leds&=~LED_SCR; /* switch LED off */
else
leds|=LED_SCR; /* switch on LED */
pckbd_leds(leds);
return; /* do nothing else */
case 0x3A: /* capslock pressed */
caps_lock=~caps_lock;
if(caps_lock==0)
leds&=~LED_CAP; /* switch caps_lock off */
else
leds|=LED_CAP; /* switch on LED */
pckbd_leds(leds);
return;
case 0x45: /* numlock pressed */
num_lock=~num_lock;
if(num_lock==0)
leds&=~LED_NUM; /* switch LED off */
else
leds|=LED_NUM; /* switch on LED */
pckbd_leds(leds);
return;
case 0xC6: /* scroll lock released */
case 0xC5: /* num lock released */
case 0xBA: /* caps lock released */
return; /* just swallow */
}
#if 1
if((scancode&0x80)==0x80) /* key released */
return;
#else
if((scancode&0x80)==0x00) /* key pressed */
return;
scancode &= ~0x80;
#endif
/* now, decide which table we need */
if(scancode > (sizeof(kbd_plain_xlate)/sizeof(kbd_plain_xlate[0]))) { /* scancode not in list */
PRINTF("unkown scancode %X\n",scancode);
return; /* swallow it */
}
/* setup plain code first */
keycode=kbd_plain_xlate[scancode];
if(caps_lock==1) { /* caps_lock is pressed, overwrite plain code */
if(scancode > (sizeof(kbd_shift_xlate)/sizeof(kbd_shift_xlate[0]))) { /* scancode not in list */
PRINTF("unkown caps-locked scancode %X\n",scancode);
return; /* swallow it */
}
keycode=kbd_shift_xlate[scancode];
if(keycode<'A') { /* we only want the alphas capital */
keycode=kbd_plain_xlate[scancode];
}
}
if(shift==1) { /* shift overwrites caps_lock */
if(scancode > (sizeof(kbd_shift_xlate)/sizeof(kbd_shift_xlate[0]))) { /* scancode not in list */
PRINTF("unkown shifted scancode %X\n",scancode);
return; /* swallow it */
}
keycode=kbd_shift_xlate[scancode];
}
if(ctrl==1) { /* ctrl overwrites caps_lock and shift */
if(scancode > (sizeof(kbd_ctrl_xlate)/sizeof(kbd_ctrl_xlate[0]))) { /* scancode not in list */
PRINTF("unkown ctrl scancode %X\n",scancode);
return; /* swallow it */
}
keycode=kbd_ctrl_xlate[scancode];
}
/* check if valid keycode */
if(keycode==0xff) {
PRINTF("unkown scancode %X\n",scancode);
return; /* swallow unknown codes */
}
kbd_put_queue(keycode);
PRINTF("%x\n",keycode);
}
