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px4fmu-v4 NuttX defconfig: lower CONFIG_DEV_PIPE_SIZE to 70 

This saves almost 2kb of RAM when using the mavlink shell. 70 matches the
size of the mavlink message. Since the pipe is blocking, a process writing
a lot of data will just wait, data will not be dropped.

The mavlink shell is the only process creating a pipe.
sbg
Beat Küng 8 years ago committed by Lorenz Meier
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      nuttx-configs/px4fmu-v4/nsh/defconfig

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nuttx-configs/px4fmu-v4/nsh/defconfig
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@ -881,7 +881,7 @@ CONFIG_RAMTRON_SETSPEED=y @@ -881,7 +881,7 @@ CONFIG_RAMTRON_SETSPEED=y
# CONFIG_EEPROM is not set
CONFIG_PIPES=y
CONFIG_DEV_PIPE_MAXSIZE=1024
CONFIG_DEV_PIPE_SIZE=1024
CONFIG_DEV_PIPE_SIZE=70
CONFIG_DEV_FIFO_SIZE=0
# CONFIG_PM is not set
# CONFIG_POWER is not set

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