scmdspi(4) - NetBSD Manual Pages

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SCMDSPI(4)              NetBSD Kernel Interfaces 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 10.0_STABLE             December 1, 2021             NetBSD 10.0_STABLE