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41 lines
1.2 KiB
Groff
41 lines
1.2 KiB
Groff
.Dd December 5, 2022
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.Dt SCSILOOP 1
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.Os PiSCSI
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.Sh NAME
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.Nm scsiloop
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.Nd Tool for testing the PiSCSI board with a loopback adapter installed
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.Sh SYNOPSIS
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.Nm
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.Op Fl L Ar LOG_LEVEL
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.Sh DESCRIPTION
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.Nm
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Performs a self-test of the PiSCSI hardware to ensure that the board is functioning properly. In order for this tool to work, a special loopback cable MUST be attached to the PiSCSI SCSI connector.
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.Pp
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In addition to testing the GPIO signals, scsiloop will perform a self-test of the hardware timers that are built into the system on a chip (SoC).
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.Pp
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The loopback connections for the DB25 connector are shown here:
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.Bd -literal -offset indent
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|Pin | Name | Pin | Name |
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+----+------+-----+------+
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| 1 | REQ | 13 | DB7 |
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| 2 | MSG | 12 | DB6 |
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| 3 | I/O | 11 | DB5 |
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| 4 | RST | 10 | DB3 |
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| 5 | ACK | 8 | DB0 |
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| 6 | BSY | 20 | DBP |
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| 15 | C/D | 23 | DB4 |
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| 17 | ATN | 22 | DB2 |
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| 19 | SEL | 21 | DB1 |
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.Ed
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.Sh OPTIONS
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.Bl -tag -width Ds
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.It Fl L Ar LOG_LEVEL
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The piscsi log level (trace, debug, info, warn, err, off). The default log level is 'info'.
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.El
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.Sh SEE ALSO
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.Xr scsictl 1 ,
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.Xr piscsi 1 ,
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.Xr scsimon 1
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.Pp
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Full documentation is available at: <https://www.piscsi.com>
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