int main(){
reportBuffer[0] = 0x00;//(1<<1);
wdt_enable(WDTO_1S);
usbInit();
usbDeviceDisconnect();
register uint8_t i=0;
while(--i){
wdt_reset();
_delay_ms(1);
}
usbDeviceConnect();
sei();
CLR(DDRB, PB0);
SET(DDRD, PD7);
TCCR0B = 5; //prescale TC0 1024, 20 MHz -> 50 ns * 1024 * 255 = 13.056 ms
while(1){
usbPoll();
wdt_reset();
if(CHK(TIFR0, TOV0)){
TIFR0 = 1<<TOV0;
TCNT0 = 0;
if(CHK(PINB, PB0) && changed == 0){
keydown = 1;
if (prev == keydown) changed = 0;
else changed = 1;
prev = 1;
}else{
keydown = 0;
if (prev == keydown) changed =0;
else changed = 1;
prev = 0;
}
}
if(changed){
changed = 0;
TIFR0 = 1<<TOV0;
TCNT0 = 0;
if(keydown){
reportBuffer[0] = 0x02;
}else{
reportBuffer[0] = 0x00;
}
TOG(PORTD, PD7);
wdt_reset();
usbSetInterrupt(reportBuffer, sizeof(reportBuffer));
}
}
}
uchar usbFunctionSetup(uchar data[8]){
usbRequest_t *rq = (void *)data;
TOG(PORTB, PB0);
usbMsgPtr = reportBuffer;
if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){ /* class request type */
if(rq->bRequest == USBRQ_HID_GET_REPORT){ /* wValue: ReportType (highbyte), ReportID (lowbyte) */
/* we only have one report type, so don't look at wValue */
return sizeof(reportBuffer);
}else if(rq->bRequest == USBRQ_HID_GET_IDLE){
usbMsgPtr = &idleRate;
return 1;
}else if(rq->bRequest == USBRQ_HID_SET_IDLE){
idleRate = rq->wValue.bytes[1];
}
}else{
/* no vendor specific requests implemented */
}
return 0;
}
__interrupt void CCR0_ISR(void){
SECOND_TIMER++;
TOUT=1;
TOG (P1OUT,0x01);
CLR (TACCTL0, CCIFG);
}
