diff options
| -rw-r--r-- | nuttx/arch/mips/src/pic32mx/pic32mx-usbdev.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/nuttx/arch/mips/src/pic32mx/pic32mx-usbdev.c b/nuttx/arch/mips/src/pic32mx/pic32mx-usbdev.c index ac6d7d056..4bd1188f7 100644 --- a/nuttx/arch/mips/src/pic32mx/pic32mx-usbdev.c +++ b/nuttx/arch/mips/src/pic32mx/pic32mx-usbdev.c @@ -265,7 +265,11 @@ #endif /* Debug ********************************************************************/ - +/* CONFIG_PIC32MX_USBDEV_REGDEBUG enables dumping of all low-level register + * access and BDT accesses. Normally, this generates so much debug output + * that USB may not even be functional. + */ + #ifdef CONFIG_PIC32MX_USBDEV_REGDEBUG # undef CONFIG_PIC32MX_USBDEV_BDTDEBUG @@ -287,6 +291,8 @@ #endif +/* CONFIG_PIC32MX_USBDEV_BDTDEBUG dumps most BDT settings */ + #ifdef CONFIG_PIC32MX_USBDEV_BDTDEBUG # define bdtdbg lldbg @@ -1003,13 +1009,13 @@ static int pic32mx_wrrequest(struct pic32mx_usbdev_s *priv, struct pic32mx_ep_s } } - /* Send the packet (might be a null packet nbytes == 0) */ + /* Send the packet (might be a null packet with nbytes == 0) */ buf = privreq->req.buf + privreq->req.xfrd; /* Setup the writes to the endpoints */ - pic32mx_epwrite(privep, privep->bdtin, buf, nbytes); + pic32mx_epwrite(privep, bdt, buf, nbytes); /* Special case endpoint 0 state information. The write request is in * progress. @@ -1064,12 +1070,14 @@ static int pic32mx_rdcomplete(struct pic32mx_usbdev_s *priv, DEBUGASSERT((bdtout->status & USB_BDT_UOWN) == USB_BDT_COWN); - /* Get the length of the data received from the BDT */ + /* Get the length of the data received from the BDT. Add that to the + * total number of bytes transferred. + */ readlen = (bdtout->status & USB_BDT_BYTECOUNT_MASK) >> USB_BDT_BYTECOUNT_SHIFT; - /* If the receive buffer is full or this is a partial packet, - * then we are finished with the transfer + /* If the receive buffer is full or this is a partial packet, then we are + * finished with the transfer. */ privreq->req.xfrd += readlen; |