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FWCONTROL(8)	       DragonFly System Manager's Manual	  FWCONTROL(8)

NAME

fwcontrol -- FireWire control utility

SYNOPSIS

fwcontrol [-rt] [-c node] [-d node] [-o node] [-s node] [-l file] [-g gap_count] [-b pri_req] [-R filename] [-S filename]

DESCRIPTION

The fwcontrol utility is designed to provide a way for users to access and control the FireWire subsystem. Without options, fwcontrol will out- put a list of devices those are/were connected to the bus. -r Initiate bus reset. -t Show the topology map. -c node Show the configuration ROM on the node. -d node Hex dump of the configuration ROM. -o node Send a link-on phy packet to the node. -s node Write to RESET_START register on the node. -l file Load hex dump file of the configuration ROM and parse it. -g gap_count Broadcast gap_count by phy_config packet. -i pri_req Set PRIORITY_BUDGET register on all supported nodes. -R filename Receive DV stream and dump it to a file. Use Ctl-C to stop the receiving. Some DV cameras seem not to send the stream if a bus manager exits. If you cannot get the stream, try the following commands. sysctl hw.firewire.try_bmr=0; fwcontrol -r The resulting file contains raw DV data excluding isochronous header and CIP header. It can be handled by libdv in the dports(7) collection. -S filename Send a DV file as isochronous stream.

FILES

/dev/fw0

EXAMPLES

Each DV frame has fixed size and it is easy to edit those frame order. fwcontrol -R original.dv Receive stream. dd if=original.dv of=first.dv bs=120000 count=30 Get first 30 frames(NTSC). dd if=original.dv of=second.dv bs=120000 skip=30 count=30 Get second 30 frames(NTSC). cat second.dv first.dv | fwcontrol -S /dev/stdin Swap first and second 30 frames and send them to DV recorder. For PAL, replace 'bs=120000' with 'bs=144000'.

SEE ALSO

firewire(4), fwe(4), fwohci(4), sbp(4)

HISTORY

The fwcontrol utility first appeared in FreeBSD 5.0.

AUTHORS

Hidetoshi Shimokawa <simokawa@FreeBSD.org>

BUGS

This utility is still under development and provided for debug purpose. DragonFly 5.3 December 30, 2002 DragonFly 5.3

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