ao_usb_in_send();
}
-char
+int
ao_usb_pollchar(void) __critical
{
- char c;
+ uint8_t c;
if (ao_usb_out_bytes == 0) {
USBINDEX = AO_USB_OUT_EP;
if ((USBCSOL & USBCSOL_OUTPKT_RDY) == 0)
- return AO_READ_AGAIN;
+ return -1;
ao_usb_out_bytes = (USBCNTH << 8) | USBCNTL;
if (ao_usb_out_bytes == 0) {
USBINDEX = AO_USB_OUT_EP;
USBCSOL &= ~USBCSOL_OUTPKT_RDY;
- return AO_READ_AGAIN;
+ return -1;
}
}
--ao_usb_out_bytes;
char
ao_usb_getchar(void) __critical
{
- char c;
+ int c;
while ((c = ao_usb_pollchar()) == AO_READ_AGAIN)
ao_sleep(&ao_stdin_ready);