diff options
Diffstat (limited to 'src/ao_usb.c')
| -rw-r--r-- | src/ao_usb.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/src/ao_usb.c b/src/ao_usb.c index 22665725..daca71a7 100644 --- a/src/ao_usb.c +++ b/src/ao_usb.c @@ -53,7 +53,7 @@ ao_usb_isr(void) interrupt 6 ao_wakeup(&ao_usb_in_bytes); if (USBOIF & (1 << AO_USB_OUT_EP)) - ao_wakeup(&ao_usb_out_bytes); + ao_wakeup(&ao_stdin_ready); if (USBCIF & USBCIF_RSTIF) ao_usb_set_interrupts(); @@ -72,7 +72,7 @@ uint8_t * __xdata ao_usb_ep0_in_data; __xdata uint8_t ao_usb_ep0_in_len; __xdata uint8_t ao_usb_ep0_in_buf[2]; __xdata uint8_t ao_usb_ep0_out_len; -__xdata uint8_t *__data ao_usb_ep0_out_data; +__xdata uint8_t *__xdata ao_usb_ep0_out_data; __xdata uint8_t ao_usb_configuration; /* Send an IN data packet */ @@ -360,7 +360,7 @@ ao_usb_flush(void) __critical } void -ao_usb_putchar(char c) __critical +ao_usb_putchar(char c) __critical __reentrant { if (!ao_usb_running) return; @@ -374,16 +374,13 @@ ao_usb_putchar(char c) __critical } char -ao_usb_getchar(void) __critical +ao_usb_pollchar(void) __critical { - __xdata char c; + char c; while (ao_usb_out_bytes == 0) { - for (;;) { - USBINDEX = AO_USB_OUT_EP; - if ((USBCSOL & USBCSOL_OUTPKT_RDY) != 0) - break; - ao_sleep(&ao_usb_out_bytes); - } + USBINDEX = AO_USB_OUT_EP; + if ((USBCSOL & USBCSOL_OUTPKT_RDY) == 0) + return AO_READ_AGAIN; ao_usb_out_bytes = (USBCNTH << 8) | USBCNTL; } --ao_usb_out_bytes; @@ -395,6 +392,16 @@ ao_usb_getchar(void) __critical return c; } +char +ao_usb_getchar(void) +{ + char c; + + while ((c = ao_usb_pollchar()) == AO_READ_AGAIN) + ao_sleep(&ao_stdin_ready); + return c; +} + void ao_usb_enable(void) { @@ -438,4 +445,5 @@ ao_usb_init(void) ao_usb_enable(); ao_add_task(&ao_usb_task, ao_usb_ep0, "usb"); + ao_add_stdio(ao_usb_pollchar, ao_usb_putchar, ao_usb_flush); } |