void usb_start(void) {
EnableUsb(); // Enable USB-hardware
//uLedOn();
while (SingleEndedZeroIsSet()); // Busywait for initial power-up
uLedOn();
#ifdef USB_INTERRUPT
// EnableUsbInterrupt(USB_STALL + USB_IDLE + USB_TRN + USB_SOF + USB_UERR + USB_URST); //We don't enable ACTIV unless we are going into suspend mode.
EnableAllUsbErrorInterrupts();
EnableUsbInterrupt(USB_TRN + USB_SOF + USB_UERR + USB_URST);
EnableUSBHighInterrupts();
#endif
}
void main(void)
{
unsigned char c,x,y,led;
unsigned long l;
// Default all pins to digital
ADCON1 |= 0x0F;
// Disable USB external transceiver to allow RB1/RB2
UCFGbits.UTRDIS = 0;
// set pin to output
TRISBbits.TRISB0 = 0;
TRISBbits.TRISB1 = 0;
TRISBbits.TRISB2 = 0;
TRISBbits.TRISB3 = 0;
LED0 = 1;
LED1 = LED2 = LED3 = 0;
// TODO: Remove magic with macro
usb_init(cdc_device_descriptor, cdc_config_descriptor, cdc_str_descs, USB_NUM_STRINGS);
usb_start();
initCDC();
usbbufflush();
do {
if (!TestUsbInterruptEnabled())
USBDeviceTasks();
switch(usb_device_state){
case DETACHED_STATE:
LED1 = 0; LED2 = 0; LED3 = 0;
case ATTACHED_STATE:
LED1 = 0; LED2 = 0; LED3 = 1;
case POWERED_STATE:
LED1 = 0; LED2 = 1; LED3 = 0;
case DEFAULT_STATE:
LED1 = 0; LED2 = 1; LED3 = 1;
case ADR_PENDING_STATE:
LED1 = 1; LED2 = 0; LED3 = 0;
case ADDRESS_STATE:
LED1 = 1; LED2 = 0; LED3 = 1;
case CONFIGURED_STATE:
LED1 = 1; LED2 = 1; LED3 = 0;
}
} while (usb_device_state < CONFIGURED_STATE);
while(1);
#if 0
// Initiate Osc with 8MHz (only relevant if you use the internal oscillator)
//OSCCON = 0x70;
initCDC();
// TODO: Remove magic with macro
usb_init(cdc_device_descriptor, cdc_config_descriptor, cdc_str_descs, USB_NUM_STRINGS);
usb_start();
#if defined (USB_INTERRUPTS)
//EnableUsbInterrupt(USB_TRN + USB_SOF + USB_UERR + USB_URST);
EnableUsbInterrupt(USB_STALL + USB_IDLE + USB_TRN + USB_ACTIV + USB_SOF + USB_UERR + USB_URST);
EnableUsbInterrupts();
#endif
usbbufflush(); //flush USB input buffer system
led = UCFGbits.UTRDIS;
LED0=0;
LED1=0;
LED2=0;
LED3=0;
while(1){
LED1 = LED1 ? 0 : 1;
for(l = 0; l < 10; ++l);
}
LED0=1;
LED1=1;
LED2=1;
LED3=1;
delay_ms(500);
#if 0
while(1)
{
LED0 = 1;
delay_ms(250);
LED0 = 0;
delay_ms(250);
}
#endif
LED0 = 0;
LED1 = 0;
LED2 = 0;
LED3 = 0;
delay_ms(500);
while(1);
do
{ LED2=1;
LED3 = 0;
#ifndef USB_INTERRUPTS
//service USB tasks
//Guaranteed one pass in polling mode
//even when usb_device_state == CONFIGURED_STATE
if (!TestUsbInterruptEnabled())
{
USBDeviceTasks();
LED3 = 1;
}
#endif
if ((usb_device_state < DEFAULT_STATE))
{ // JTR2 no suspendControl available yet || (USBSuspendControl==1) ){
LED0=1;
LED1=0;
} else if (usb_device_state < CONFIGURED_STATE)
{
LED0=1;
LED1=1;
}else if((usb_device_state == CONFIGURED_STATE))
{
LED0=0;
LED1=1;
}
LED2=0;
delay_ms(1000);
} while (usb_device_state < CONFIGURED_STATE);
LED0 = 0;
LED1 = 0;
LED2 = 1;
#if 1
while(1)
{
LED0 = led;
led = led ? 0 : 1;
#ifndef USB_INTERRUPTS
//service USB tasks
//Guaranteed one pass in polling mode
//even when usb_device_state == CONFIGURED_STATE
if (!TestUsbInterruptEnabled())
USBDeviceTasks();
#endif
usbbufservice(); //service USB buffer system
if (usbbufgetbyte(&c) == 1)
{
WaitInReady();
cdc_In_buffer[0] = c; //answer OK
putUnsignedCharArrayUsbUsart(cdc_In_buffer, 1);
}
}
#endif
// Disable USB external transceiver to allow RB1/RB2
UCFGbits.UTRDIS = 0;
// set pin to output
TRISBbits.TRISB0 = 0;
TRISBbits.TRISB1 = 0;
TRISBbits.TRISB2 = 0;
// start a loop blinking the led
while(1)
{
LED0 = 1;
delay_ms(250);
LED0 = 0;
delay_ms(250);
}
#endif
}