void usb_isr_rst(void)
{
UEIR = 0;
UIR = 0;
UEIE = 0x9F;
UIE = STANDARD_INTS & ~__USB_UIF_ACTIVE;
UADDR = 0;
usb_disable_endpoints();
usb_token_reset();
UEP(0) = ENDPT_CONTROL | 0x10;
while (UIR_TRN)
{
usb_clear_trn();
}
UCON_PKTDIS = 0; //SIE token and packet processing enabled
usb_init_ep0_setup();
usb_state = USB_STATE_DEFAULT; //put usb mcu into default state
}
// see usb_hw_layer.h for documentation
void usb_set_configured(unsigned int8 config)
{
unsigned int8 en;
unsigned int16 addy;
unsigned int8 new_uep;
unsigned int16 len;
unsigned int8 i;
if (config == 0)
{
// if config=0 then set addressed state
usb_state = USB_STATE_ADDRESS;
usb_disable_endpoints();
}
else
{
// else set configed state
usb_state = USB_STATE_CONFIGURED;
addy = (unsigned int16)USB_DATA_BUFFER_LOCATION+(2*USB_MAX_EP0_PACKET_LENGTH);
for (en=1; en<USB_NUM_UEP; en++)
{
// enable and config endpoints based upon user configuration
usb_disable_endpoint(en);
new_uep = 0;
if (usb_ep_rx_type[en] != USB_ENABLE_DISABLED)
{
new_uep = 0x04;
len = usb_ep_rx_size[en];
EP_BDxCNT_O(en) = len;
EP_BDxADR_O(en) = addy;
addy += usb_ep_rx_size[en];
#if USB_IGNORE_RX_DTS
i = 0x80;
#else
i = 0x88;
#endif
if (bit_test(len,8)) {bit_set(i,0);}
if (bit_test(len,9)) {bit_set(i,1);}
EP_BDxST_O(en) = i;
}
if (usb_ep_tx_type[en] != USB_ENABLE_DISABLED)
{
new_uep |= 0x02;
EP_BDxADR_I(en) = addy;
addy += usb_ep_tx_size[en];
EP_BDxST_I(en) = 0x40;
}
if (new_uep == 0x06) {new_uep = 0x0E;}
if (usb_ep_tx_type[en] != USB_ENABLE_ISOCHRONOUS) {new_uep |= 0x10;}
UEP(en) = new_uep;
}
}
}