sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

STM32 OTG FS device: Don't process TXFE^Cf we have already processed an XFRC interrupt.

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4775 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-05-27 15:15:57 +00:00
parent 37a6972595
commit 0cfe912f3e
1 changed files with 29 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
arch/arm/src/stm32/stm32_otgfsdev.c
View File

@ -2622,7 +2622,7 @@ static inline void stm32_epin(FAR struct stm32_usbdev_s *priv, uint8_t epno)
else if (priv->devstate == DEVSTATE_CONFIGURED)
{
/* Continue processing data from the EP0 OUT request queue */
/* Continue processing data from the endpoint write request queue */
stm32_epin_request(priv, privep);
}
@ -2716,11 +2716,16 @@ static inline void stm32_epin_interrupt(FAR struct stm32_usbdev_s *priv)
{
usbtrace(TRACE_INTDECODE(STM32_TRACEINTID_EPIN_XFRC), (uint16_t)diepint);
/* It is possible that logic may be waiting for a the TxFIFO to become
* empty. We disable the TxFIFO empty interrupt here; it will be
* re-enabled if there is still insufficient space in the TxFIFO.
*/
empty &= ~OTGFS_DIEPEMPMSK(epno);
stm32_putreg(empty, STM32_OTGFS_DIEPEMPMSK);
stm32_putreg(OTGFS_DIEPINT_XFRC, STM32_OTGFS_DIEPINT(epno));
/* IN complete */
/* IN transfer complete */
stm32_epin(priv, epno);
}
@ -2772,7 +2777,28 @@ static inline void stm32_epin_interrupt(FAR struct stm32_usbdev_s *priv)
if ((diepint & OTGFS_DIEPINT_TXFE) != 0)
{
usbtrace(TRACE_INTDECODE(STM32_TRACEINTID_EPIN_TXFE), (uint16_t)diepint);
stm32_epin_txfifoempty(priv, epno);
/* If we were waiting for TxFIFO to become empty, the we might have both
* XFRC and TXFE interrups pending. Since we do the same thing for both
* cases, ignore the TXFE if we have already processed the XFRC.
*/
if ((diepint & OTGFS_DIEPINT_XFRC) == 0)
{
/* Mask further FIFO empty interrupts. This will be re-enabled
* whenever we need to wait for a FIFO event.
*/
empty &= ~OTGFS_DIEPEMPMSK(epno);
stm32_putreg(empty, STM32_OTGFS_DIEPEMPMSK);
/* Handle TxFIFO empty */
stm32_epin_txfifoempty(priv, epno);
}
/* Clear the pending TxFIFO empty interrupt */
stm32_putreg(OTGFS_DIEPINT_TXFE, STM32_OTGFS_DIEPINT(epno));
}
}