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SCMDSPI(4)                   Device Drivers Manual                  SCMDSPI(4)

NAME
     scmdspi - SPI frontend to the Sparkfun Serial Controlled Motor Driver

SYNOPSIS
     scmd* at spi? slave 0
     scmd* at spi? slave 1

DESCRIPTION
     The scmdspi driver provides the SPI frontend attachment for the Sparkfun
     SCMD device.

SYSCTL VARIABLES
     The following sysctl(3) variables are inherited from scmd(4) :

     hw.scmd0.debug
             If the driver is compiled with SCMD_DEBUG, this node will appear
             and can be used to set the debugging level.

FILES
     /dev/scmdu     character device allowing access to the register space of
                    a main u, SCMD device

SEE ALSO
     iic(4), spi(4), scmdi2c(4), scmdspi(4), scmdctl(1), sysctl(8)

HISTORY
     The scmdspi driver first appeared in NetBSD 10.0.

AUTHORS
     The scmdspi driver was written by Brad Spencer <brad@anduin.eldar.org>.

BUGS
     When used in SPI mode, the SCMD device uses an odd method of doing reads
     that can become stuck.  See the command spi_read_one in the scmdctl(1)
     utility to try and unstick the device when this happens.


NetBSD 9.99                    December 1, 2021                    NetBSD 9.99