void Task_KeyScan (void)
{
static INT8U ucKeyCodeHolder = 0X00;
INT8U ucKeyCode = 0X00;
CACTL1 = CARSEL + CAREF1 + CAON;
CACTL2 = P2CA0 + CAF;
switch (g_sKey.ScanState)
{
case KEY_STATE_UP: // See if need to look for a key pressed
if (Key_Pressed())
{ // See if key is pressed
g_sKey.ScanState = KEY_STATE_DEBOUNCE; // Next call we will have debounced the key
ucKeyCodeHolder = 0X00;
}
g_sKey.Time = 0;
break;
case KEY_STATE_DEBOUNCE: // Key pressed, get scan code and buffer
if (Key_Pressed())
{ // See if key is pressed
ucKeyCode = Key_Decode(); // Determine the key scan code
if (ucKeyCode != ucKeyCodeHolder)
{
Key_PushKey(ucKeyCode); // Input scan code in buffer
ucKeyCodeHolder = ucKeyCode;
}
g_sKey.Time += KEY_SCAN_ALT;
g_sKey.Pressed = 1;
}
else
{
g_sKey.ScanState = KEY_STATE_UP; // Key was not pressed after all!
g_sKey.Pressed = 0;
}
break;
default:
Key_Init();
break;
}
CACTL1 &=~ (CAREF1 + CAREF0);//CAON);
if (Key_Hit())
EnableBackLight(30);
}
void Print_Key_Pressed()
{
Keycode key_code = 0;
Print("Welcome to Caro!\n");
while (!Should_Exit(key_code))
{
key_code = Wait_For_Key();
if ( Key_Pressed(key_code) )
{
Print("%c",key_code);
}
}
Print("\nGoodbye!\n");
}
