自学教程：C++ usbInit函数代码示例

int main(void){    led_init();        sht1x_init();    //sser_init();        wdt_enable(WDTO_1S);        /* Even if you don't use the watchdog, turn it off here. On newer devices,     * the status of the watchdog (on/off, period) is PRESERVED OVER RESET!     */    /* RESET status: all port bits are inputs without pull-up.     * That's the way we need D+ and D-. Therefore we don't need any     * additional hardware initialization.     */    odDebugInit();    DBG1(0x00, 0, 0);       /* debug output: main starts */    usbInit();    usbDeviceDisconnect();  /* enforce re-enumeration, do this while interrupts are disabled! */    unsigned char i = 0;    while(--i){             /* fake USB disconnect for > 250 ms */        wdt_reset();        _delay_ms(1);    }    usbDeviceConnect();    sei();    DBG1(0x01, 0, 0);       /* debug output: main loop starts */            for(;;){        wdt_reset();        usbPoll();    }    return 0;   /* never reached */}

int main(){	fabscan_setup();	uchar i;//    wdt_enable(WDTO_1S); // enable 1s watchdog timer    usbInit();    usbDeviceDisconnect(); // enforce re-enumeration    for(i = 0; i<250; i++) { // wait 500 ms//        wdt_reset(); // keep the watchdog happy        _delay_ms(2);    }    usbDeviceConnect();    sei(); // Enable interrupts after re-enumeration    while(1)    {//    		wdt_reset(); // keep the watchdog happy    		usbPoll();    		if(fab_work_flag)	// if there is new data for fabscan → let it work    		{    			fab_work_flag=0;    			fabscan_work(1,incomingByte);    		}    }    return 0;}

int main() {	initLCD();	LCD_goto(1,0);	lcd_puts("AVRLCD 4bit mode");        uchar i;		  DDRB = 1; // PB0 as output    wdt_enable(WDTO_1S); // enable 1s watchdog timer    usbInit();            usbDeviceDisconnect(); // enforce re-enumeration    for(i = 0; i<250; i++) { // wait 500 ms        wdt_reset(); // keep the watchdog happy        _delay_ms(2);    }    usbDeviceConnect();            sei(); // Enable interrupts after re-enumeration            while(1) {        wdt_reset(); // keep the watchdog happy        usbPoll();    }            return 0;}

int main(void){    wdt_enable(WDTO_1S);    odDebugInit();    hardwareInit();    usbInit();    intr3Status = 0;    sendEmptyFrame  = 0;    sei();    for(;;){    /* main event loop */        wdt_reset();        usbPoll();        uartPoll();#if USB_CFG_HAVE_INTRIN_ENDPOINT3        /* We need to report rx and tx carrier after open attempt */        if(intr3Status != 0 && usbInterruptIsReady3()){            static uchar serialStateNotification[10] = {0xa1, 0x20, 0, 0, 0, 0, 2, 0, 3, 0};            if(intr3Status == 2){                usbSetInterrupt3(serialStateNotification, 8);            }else{                usbSetInterrupt3(serialStateNotification+8, 2);            }            intr3Status--;        }#endif    }    return 0;}

// mainint main(void) {		wdt_enable(WDTO_1S);	hardwareInit();	usbInit();	sei();		unsigned int adcValue,replymask,replyshift,replybyte;		while(1) {		uchar i = 0;		wdt_reset();		usbPoll();		PORTD ^= (1 << 6);				//jump to bootloader if jumper is HIGH		if(bit_is_clear(PIND, 5)) {			startBootloader();		}				for(i = 0; i < ADC_CHANNELS; i++) {			//adcValue = adc_read(ADC_PRESCALER_32, ADC_VREF_AVCC, i);			adcValue = i;			usb_reply[i] = adcValue >> 2;				replybyte = 16 + (i / 4);			replyshift = ((i % 4) * 2);			replymask = (3 << replyshift);			usb_reply[replybyte] =	(usb_reply[replybyte] & ~replymask) | (replymask & (adcValue << replyshift));			_delay_us(ADCDELAY);		}		usb_reply[20] = PINC;	}	return 0;}

void main(void) {	uint16 	speed = param_speed;	uint8	port = param_port, 			pin=param_pin;	uint8 	ServoPos = 120;	uint8 	dir=1;		systemInit();	usbInit();	InitServos();		EA=1; // Global interrupt enabled	SetPin(0, port, pin);	SetPin(1, 0, 1);	SetPin(2, 0, 3);	while (1) {		delayMs(speed);		usbComService();				if (dir==1) {			++ServoPos;		}		else {			--ServoPos;		}		if (ServoPos > 253 || ServoPos < 2) {			dir ^=1;		}		SetPos(0,ServoPos);		SetPos(1,128);		SetPos(2,64);	}}

void __attribute__((noreturn)) main( void ){    cli();    initLeds();    wdt_enable( WDTO_1S );    // USB initialization.    usbInit();    usbDeviceDisconnect();  // enforce re-enumeration, do this while interrupts are disabled!    unsigned char b = 150;    while ( b-- )    {        _delay_ms( 1 );        wdt_reset();    }    cpuIoInit();    usbDeviceConnect();    sei();    for ( ;; )    {        // main event loop        usbPoll();        wdt_reset();        cpuIoPoll();        //_delay_ms( 10 );    }}

/*************************************************************************NAME        InitEarlyUserFeatures    DESCRIPTION    This function initialises the configureation that is required early     on in the start-up sequence. RETURNS*/void InitEarlyUserFeatures ( void ) {       ChargerConfigure(CHARGER_SUPPRESS_LED0, TRUE);                /* Initialise the Button Manager */    buttonManagerInit() ;              /* Once system Managers are initialised, load up the configuration */    configManagerInit(TRUE);           /* Init wired before USB or wired audio gets routed before init */    wiredAudioInit();     /* USB init can be done once power lib initialised */    usbInit();        /* initialise the display */    displayInit();        /* initialise DUT */    dutInit();        /*configure the audio Pre amp if enabled */    initPreAmp( AUDIO_CHANNEL_A) ;    initPreAmp( AUDIO_CHANNEL_B) ;    /* Enter the limbo state as we may be ON due to a charger being plugged in */    stateManagerEnterLimboState();    }   

int main( void ){	//===========================================	uchar   calibrationValue;    calibrationValue = eeprom_read_byte(0); /* calibration value from last time */    if(calibrationValue != 0xff){        OSCCAL = calibrationValue;    }	//===========================================	usbInit();    wdt_enable(WDTO_1S);    /* Даже если Вы не используете сторожевой таймер (watchdog), выключите его здесь. На более новых     *  микроконтроллерах состояние watchdog (вкл/выкл, период) СОХРАНЯЕТСЯ ЧЕРЕЗ СБРОС!     */	//===========================================    usbDeviceDisconnect();    _delay_ms(300);			/* 300 ms disconnect */    usbDeviceConnect();	//===========================================    //LED_PORT_DDR |= _BV(LED_BIT);		/* делаем ножку, куда подключен LED, выходом */	sbi(LED_PORT_DDR,LED_BIT);			/* делаем ножку, куда подключен LED, выходом */	//===========================================	sei();		/* Разрешаем прерывания*/    for(;;){    /* main event loop */        wdt_reset();        usbPoll();	}	//===========================================}

void vusb_init(void){	// inits the timer used for idle rate    // a rate of 12M/(1024 * 256) = 45.78 Hz (period = 21845us)	TCCR0B = _BV(CS02) | _BV(CS00);#define TMR1US	21845L	// a rate of 12M/(64 * 256) = 732,42 Hz (1365us)//	TCCR0B = _BV(CS01) | _BV(CS00);//#define TMR1US	1365L#define OVF2MS(tmr)		((uint16_t)(( (tmr) * TMR1US) / 1000))#define OVF2US(tmr)		((uint16_t)( (tmr) * TMR1US))	usbInit();	usbDeviceDisconnect();	// enforce re-enumeration, do this while interrupts are disabled!	_delay_ms(260);			// fake USB disconnect for > 250 ms	usbDeviceConnect();	vusb_idle_rate = 0;	vusb_curr_protocol = 1;	// report protocol		// clear the reports	usb_consumer_report = 0;	reset_keyboard_report();}

void main(){   	uint32 last_ms;	systemInit();	//configure the P1_2 and P1_3 IO pins	makeAllOutputs(LOW);	//initialise Anlogue Input 0	P0INP = 0x1;	//initialise the USB port	usbInit();	usbComRequestLineStateChangeNotification(LineStateChangeCallback);		last_ms = getMs();	while (1)	{		boardService();		usbComService();		if((getMs()-last_ms) >=5000){			LED_YELLOW_TOGGLE();			printf("batteryPercent: %i/r/n", batteryPercent(adcRead(0 | ADC_REFERENCE_INTERNAL)));			last_ms=getMs();		}	}}

int main(){	uchar	i=0;    wdt_enable(WDTO_1S);        usbInit();    	usbDeviceDisconnect();  /* enforce re-enumeration, do this while interrupts are disabled! */        for (i=0; i<250; i++)    {         /* fake USB disconnect for > 500 ms */        wdt_reset();        _delay_ms(2);    }    usbDeviceConnect();    //LED_PORT_DDR |= _BV(LED_BIT);   /* make the LED bit an output */    sei();    //DBG1(0x01, 0, 0);       /* debug output: main loop starts */    while (1)    {        wdt_reset();        usbPoll();			}}

int main(void){#if    STARTUP_DELAY  /* Power ON delay (300ms) */  for (wait=0; wait<150; wait++) {    delay_10us(200);        // 2ms  }#endif#if F_CPU == 12800000    /* RC OSC mode, (D-) */  TCCR0B = 3;          /* 1/64 prescaler */  OSCCAL=118;#endif#if 1  /* PD5は USB D-, PD2はmodeジャンパ用 pullup */  /* なお、PD2はクロック出力を
C++ usbPoll函数代码示例
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