int main(void)
{
int8_t x, y, *p;
uint8_t i;
// set for 16 MHz clock
CPU_PRESCALE(0);
LED_CONFIG;
LED_OFF;
// Initialize the USB, and then wait for the host to set configuration.
// If the Teensy is powered without a PC connected to the USB port,
// this will wait forever.
usb_init();
while (!usb_configured()) /* wait */ ;
// Wait an extra second for the PC's operating system to load drivers
// and do whatever it does to actually be ready for input
_delay_ms(1000);
while (1) {
// This sequence creates a left click
usb_mouse_buttons(1, 0, 0);
_delay_ms(10);
usb_mouse_buttons(0, 0, 0);
}
}
void move_mouse(void) {
/* don't move the mouse unless we already took 2 readings */
if (!initalized) {
initalized = 1;
} else {
// ignore least significant bit, as it's probably noise
currentX = currentX >> 1;
currentY = currentY >> 1;
deltaX = previousX - currentX;
deltaY = previousY - currentY;
if (((deltaX < THRESHOLD) && (deltaX > -THRESHOLD))
&& (deltaY < THRESHOLD && (deltaY > -THRESHOLD))) {
#ifdef DEBUG
if (deltaX != 0 || deltaY != 0) {
print("x="); phex(deltaX); print("\t");
print("y="); phex(deltaY); print("\n");
}
#endif
usb_mouse_move(deltaX, deltaY, 0);
currButtonState = PIND & 0x01; // Care about D0 only
// button pressed
if (!currButtonState) {
usb_mouse_buttons(1, 0, 0);
} else { // released
usb_mouse_buttons(0, 0, 0);
}
}
}
previousX = currentX;
previousY = currentY;
}
