int main(void)
{
wdt_reset();
wdt_enable(WDTO_120MS);
usbInit();
usbDeviceDisconnect();
uint8_t t;
for (t=255; t; t--) {
_delay_ms(1);
wdt_reset();
}
usbDeviceConnect();
sei();
gpib_init();
for (;;) {
usbPoll();
wdt_reset();
}
}
void main() {
sysclk_init(); // Initialize oscillator
wait_ms(1000);
port_init(); // Initialize crossbar and GPIO
gpib_init();
timer_init();
EA = 1; // Global Interrupt enable
usb0_init();
while (1) {
gpib_polling();
usb_polling();
if(sys_state & SYS_PERIODIC_ACTIVE){
sys_state &= ~SYS_PERIODIC_ACTIVE;
led_toggle(1);
}
if(sys_state & SYS_GPIB_CONTROLLER){
led_on(2);
}else{
led_off(2);
}
{ // check talked
static __xdata u8 persistent = 0;
if(sys_state & SYS_GPIB_TALKED){
led_on(3);
persistent = 0x40;
}else if(persistent > 0){
led_toggle(3);
persistent--;
}else{
led_off(3);
}
}
{ // check listened
static __xdata u8 persistent = 0;
if(sys_state & SYS_GPIB_LISTENED){
led_on(4);
persistent = 0x40;
}else if(persistent > 0){
led_toggle(4);
persistent--;
}else{
led_off(4);
}
}
}
}