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Code Issues Releases Activity

Flight/USB_HID: Change to deal with buffer filling up when GCS not ACK'ing the

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usb transmissions.  Clear TX buffer after any NAK.

git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@2147 ebee16cc-31ac-478f-84a7-5cbb03baadba
This commit is contained in:
peabody124 2010-11-23 19:29:10 +00:00 committed by peabody124
parent 88a0ede73b
commit cfbdad5e0d
1 changed files with 7 additions and 1 deletions
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8
flight/PiOS/STM32F10x/pios_usb_hid.c
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@ -228,7 +228,13 @@ int32_t PIOS_USB_HID_TxBufferPutMoreNonBlocking(uint8_t id, const uint8_t * buff
if(!transfer_possible)
return -1;
uint8_t previous_data = fifoBuf_getUsed(&tx_pios_fifo_buffer);
if(GetEPTxStatus(ENDP1) == EP_TX_NAK) {
/* This happens on windows when plugged in but GCS not connected */
/* in this case clear buffer and keep trying */
fifoBuf_clearData(&tx_pios_fifo_buffer);
}
uint16_t previous_data = fifoBuf_getUsed(&tx_pios_fifo_buffer);
if (len > fifoBuf_getFree(&tx_pios_fifo_buffer))
return -2; /* Cannot send all requested bytes */