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| author | Gregory Nutt <gnutt@nuttx.org> | 2013-07-14 17:01:23 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2013-07-14 17:01:23 -0600 |
| commit | a9ac8ee92de976a5450e3a060a561e22094f4d60 (patch) | |
| tree | 8b1201d325c23a980f2f67617dfdf8b502f99932 /apps/system/zmodem/Kconfig | |
| parent | ebc9e1858b5c0d534cbd9fe0e52ceeebecabe241 (diff) | |
| download | px4-nuttx-a9ac8ee92de976a5450e3a060a561e22094f4d60.tar.gz px4-nuttx-a9ac8ee92de976a5450e3a060a561e22094f4d60.tar.bz2 px4-nuttx-a9ac8ee92de976a5450e3a060a561e22094f4d60.zip | |
Fix some Zmodem buffer sizing issues
Diffstat (limited to 'apps/system/zmodem/Kconfig')
| -rw-r--r-- | apps/system/zmodem/Kconfig | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/apps/system/zmodem/Kconfig b/apps/system/zmodem/Kconfig index a622e9e8e..7d84d1812 100644 --- a/apps/system/zmodem/Kconfig +++ b/apps/system/zmodem/Kconfig @@ -22,15 +22,22 @@ config SYSTEM_ZMODEM_RCVBUFSIZE int "Receive buffer size" default 512 ---help--- - The size of one buffer used to read data from the remote peer. + The size of one buffer used to read data from the remote peer. The + total buffering capability is SYSTEM_ZMODEM_RCVBUFSIZE plus the size + of the RX buffer in the device driver. If you are using a serial + driver with, say, USART0. That that buffering capability includes + USART0_RXBUFFERSIZE. This total buffering capability must be + significantly larger than SYSTEM_ZMODEM_PKTBUFSIZE (larger due + streaming race conditions, data expansion due to escaping, and + possible protocol overhead). config SYSTEM_ZMODEM_PKTBUFSIZE int "Maximum packet size" default 512 ---help--- Data may be received in gulps of varying size and alignment. - Received packets data is properly packed into a packet buffer of - this size. + Received packets data is properly unescaped, aligned and packed + into a packet buffer of this size. config SYSTEM_ZMODEM_SNDBUFSIZE int "Send buffer size" |