OrgApache/incubator-nuttx
OrgApache
/
incubator-nuttx
mirror of https://github.com/apache/incubator-nuttx.git
1
0
Fork 0
Code Issues Releases Wiki Activity

change default size of CDC/ACM serial buffer sizes

This commit is contained in:
Gregory Nutt 2015-12-07 17:18:14 -06:00
parent 8fdb173090
commit 513cc08c7f
1 changed files with 18 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/usbdev/Kconfig
View File

@ -244,6 +244,10 @@ config PL2303_BULKIN_REQLEN
on the other hand, request buffer size is always the same as the
maxpacket size.
There is also no reason from PL2303_BULKIN_REQLEN to be greater
than PL2303_TXBUFSIZE-1, since a request larger than the TX
buffer can never be sent.
config PL2303_RXBUFSIZE
int "Receive buffer size"
default 513 if USBDEV_DUALSPEED
@ -257,14 +261,14 @@ config PL2303_RXBUFSIZE
config PL2303_TXBUFSIZE
int "Transmit buffer size"
default 513 if USBDEV_DUALSPEED
default 257 if !USBDEV_DUALSPEED
default 767 if USBDEV_DUALSPEED
default 193 if !USBDEV_DUALSPEED
---help---
Size of the serial transmit buffers. The actual amount of data that
can be held in the buffer is this number minus one due to the way
that the circular buffer is managed. So a TX buffer size of 257
will hold four full-speed, 64 byte packets; a buffer size of 513
will hold one high-speed, 512 byte packet.
that the circular buffer is managed. So a TX buffer size of 767
will hold one request of size 768; a buffer size of 193 will hold
two requests of size 96 bytes.
config PL2303_VENDORID
hex "Vendor ID"
@ -429,6 +433,10 @@ config CDCACM_BULKIN_REQLEN
on the other hand, request buffer size is always the same as the
maxpacket size.
There is also no reason from CDCACM_BULKIN_REQLEN to be greater
than CDCACM_TXBUFSIZE-1, since a request larger than the TX
buffer can never be sent.
config CDCACM_RXBUFSIZE
int "Receive buffer size"
default 513 if USBDEV_DUALSPEED
@ -442,14 +450,14 @@ config CDCACM_RXBUFSIZE
config CDCACM_TXBUFSIZE
int "Transmit buffer size"
default 513 if USBDEV_DUALSPEED
default 257 if !USBDEV_DUALSPEED
default 767 if USBDEV_DUALSPEED
default 193 if !USBDEV_DUALSPEED
---help---
Size of the serial transmit buffers. The actual amount of data that
can be held in the buffer is this number minus one due to the way
that the circular buffer is managed. So a TX buffer size of 257
will hold four full-speed, 64 byte packets; a buffer size of 513
will hold one high-speed, 512 byte packet.
that the circular buffer is managed. So a TX buffer size of 767
will hold one request of size 768; a buffer size of 193 will hold
two requests of size 96 bytes.
config CDCACM_VENDORID
hex "Vendor ID"