int_fast8_t
usb_send_bulk_in(void *data, uint_fast8_t len)
{
UENUM = USB_CDC_EP_BULK_IN;
if (!(UEINTX & (1<<TXINI))) {
// Buffer full
UEIENX = 1<<TXINE;
return -1;
}
usb_write_packet(data, len);
UEINTX = (uint8_t)~((1<<FIFOCON) | (1<<TXINI) | (1<<RXOUTI));
return len;
}
static int8_t
_usb_send_ep0(const void *data, uint8_t len, uint8_t progmem)
{
UENUM = 0;
uint8_t ueintx = UEINTX;
if (ueintx & ((1<<RXSTPI) | (1<<RXOUTI)))
return -2;
if (!(ueintx & (1<<TXINI))) {
// Not ready to send
UEIENX = (1<<RXSTPE) | (1<<RXOUTE) | (1<<TXINE);
return -1;
}
if (progmem)
usb_write_packet_progmem(data, len);
else
usb_write_packet(data, len);
UEINTX = ~(1<<TXINI);
return len;
}
int_fast8_t
usb_send_setup(const void *data, uint_fast8_t len)
{
return usb_write_packet(0, 1, data, len);
}
int_fast8_t
usb_send_bulk_in(void *data, uint_fast8_t len)
{
return usb_write_packet(USB_CDC_EP_BULK_IN, 1, data, len);
}
