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.