Point touch_calculatePoint() {
Point p1;
int i;
for(i = 0; i < 4; i++) {
output[i] = serialGetChar(TOUCHSCREEN);
}
int xVal = output[0];
int xExtension = output[1];
int yVal = output[2];
int yExtension = output[3];
xVal = xVal | (xExtension << 7);
yVal = yVal | (yExtension << 7);
p1.x = ((float)(xVal - 58) / 4037.0) * 800;
p1.y = ((float)(yVal - 266) / 3670.0) * 480;
if (prevPoint.x != p1.x && prevPoint.y != p1.y) {
if (p1.x > 0 && p1.x < 800 && p1.y > 0 && p1.y < 480) {
prevPoint.x = p1.x;
prevPoint.y = p1.y;
TOUCH_DEBOUNCE = 1;
return p1;
}
}
return dumbPoint;
}
int main()
{
screenInit();
screenPutString("BIOS Terminal v1.0 build " BUILD "\r\n(C) Copyright 2004 Wojtek Kaniewski <*****@*****.**>\r\nPress F12 to configure serial port\r\n\r\n");
serialSetup();
for (;;) {
#ifdef DEBUG_SERIAL
byte x, y, a;
x = screenX; y = screenY; a = screenAttr;
screenX = 30; screenY = 24; screenAttr = 7*16;
screenCursorNoUpdate = 1;
screenPutString(" s:");
screenPutHex((char)((char) serialRxHead - (char) serialRxTail));
screenPutString(" i:");
screenPutHex(portRead(0x21));
screenPutString(" t:");
screenPutHex(serialRxTail >> 8);
screenPutHex(serialRxTail &255);
screenPutString("/h:");
screenPutHex(serialRxHead >> 8);
screenPutHex(serialRxHead &255);
screenPutString(",");
screenPutHex(portRead(serialPort+1));
screenPutString(",");
screenPutHex(serialInterruptLast); // +2
screenPutString(",");
screenPutHex(portRead(serialPort+3));
screenPutString(",");
screenPutHex(portRead(serialPort+4));
screenPutString(",");
screenPutHex(portRead(serialPort+5));
screenPutString(",");
screenPutHex(portRead(serialPort+6));
screenPutString(" k:");
screenCursorNoUpdate = 0;
screenX = x; screenY = y; screenAttr = a;
screenCursorUpdate();
#endif // DEBUG_SERIAL
if (keyboardPressed()) {
char *seq = vtGetChar();
while (*seq) {
serialPutChar(*seq);
seq++;
}
}
while (serialDataReady()) {
char ch = serialGetChar();
vtPutChar(ch);
}
}
}