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16ce5b2091
- migrate to ibus protocol verion 2 - nexys2 systems now with DCM derived system clock supported - sys_w11a_n2 now runs with 58 MHz clksys
35 lines
687 B
Bash
Executable File
35 lines
687 B
Bash
Executable File
#!/bin/sh
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# $Id: set_ftdi_lat 282 2010-04-24 12:08:32Z mueller $
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#
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# Usage: sudo $HOME/other/retro/trunk/bin/set_ftdi_lat USB0 1
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#
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# Revision History:
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# Date Rev Version Comment
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# 2010-04-24 282 1.0 fix filename for retrieving old latency
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# 2010-04-24 281 0.9 Initial version
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#
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dev=${1:-USB0}
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lat=${2:-1}
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file="/sys/bus/usb-serial/devices/tty$dev/latency_timer"
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if [ ! -r $file ]
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then
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echo "set_ftdi_lat-E: device $dev not available"
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echo " $file not found"
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exit 1
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fi
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if [ ! -w $file ]
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then
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echo "set_ftdi_lat-E: parameters for $dev not writable"
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exit 1
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fi
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old=`cat $file`
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echo "Set latency for tty$dev: old=$old new=$lat"
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echo "$lat" > $file
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