diff options
Diffstat (limited to 'src/lpc/ao_usb_lpc.c')
| -rw-r--r-- | src/lpc/ao_usb_lpc.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/lpc/ao_usb_lpc.c b/src/lpc/ao_usb_lpc.c index 713fbc53..686dc3a4 100644 --- a/src/lpc/ao_usb_lpc.c +++ b/src/lpc/ao_usb_lpc.c @@ -58,6 +58,7 @@ static uint8_t ao_usb_ep0_state; /* Pending EP0 IN data */ static const uint8_t *ao_usb_ep0_in_data; /* Remaining data */ static uint8_t ao_usb_ep0_in_len; /* Remaining amount */ +static uint16_t ao_usb_ep0_in_max; /* Requested amount from host */ /* Temp buffer for smaller EP0 in data */ static uint8_t ao_usb_ep0_in_buf[2]; @@ -380,10 +381,11 @@ ao_usb_ep0_flush(void) if (this_len > AO_USB_CONTROL_SIZE) this_len = AO_USB_CONTROL_SIZE; - if (this_len < AO_USB_CONTROL_SIZE) - ao_usb_ep0_state = AO_USB_EP0_IDLE; - ao_usb_ep0_in_len -= this_len; + ao_usb_ep0_in_max -= this_len; + + if (this_len < AO_USB_CONTROL_SIZE || ao_usb_ep0_in_max == 0) + ao_usb_ep0_state = AO_USB_EP0_IDLE; debug_data ("Flush EP0 len %d:", this_len); memcpy(ao_usb_ep0_tx_buffer, ao_usb_ep0_in_data, this_len); @@ -456,6 +458,7 @@ ao_usb_ep0_out_set(uint8_t *data, uint8_t len) static void ao_usb_ep0_in_start(uint16_t max) { + ao_usb_ep0_in_max = max; /* Don't send more than asked for */ if (ao_usb_ep0_in_len > max) ao_usb_ep0_in_len = max; |