add support for 8-bit and I2C variants of the chip:
- MCP23008 / MCP23S08: 8-bit (I2C / SPI)
- MCP23017 / MCP23S17: 16-bit (I2C / SPI)
- MCP23018 / MCP23S18: 16-bit (I2C / SPI), open-drain outputs
The MCP23x17 and MCP23x18 are essentially identical, software-wise; we
merely report different GPIO pin capabilities (no push-pull output for
MCP23x18). Also, remove the tri-state capability that was previously
advertised by the old version of this driver; these chips have no way
to put the pin into a HI-Z mode.
All 3 I2C versions are supported, but the SPI front-end still only
supports the MCP23S17 for now (SPI autoconfiguration needs an overhaul).
mcp23s17gpio(4) remains present as a link to the new mcpgpio(4) man page.
XXX Still to-do: FDT integration, interrupt suppoort.
a function to be called before the destructor for a batch of one or more
objects is called. This can be used as a synchronization point by
subsystems that rely on the type-stable nature of pool cache objects or
subsystems that use other forms of passive serialization.
MKKDEBUG -> MKDEBUGKERNEL
MKTOOLSDEBUG -> MKDEBUGTOOLS
while keeping compatibility with the old names. Add missing documentation.
Now all debugging tunables are prefixed with MKDEBUG.
as the name implies, includes a netbsd.gdb inside each kernel set:
$ tar -tzvf kern-GENERIC.tgz
-rwxr-xr-x 0 root wheel 29398264 Dec 19 12:50 ./netbsd
-rwxr-xr-x 0 root wheel 208125880 Dec 19 12:50 ./netbsd.gdb
Driver module as illustrated here:
https://www.sparkfun.com/products/13911
A SCMD module is a ARM SOC simular to a Arduino in front of a motor
driver chip. The single SCMD module can control two motors and up to
16 additional modules can be chained together using an internal I2C
bus. One can interface with the SCMD using tty uart commands, SPI or
I2C. The driver in this commit adds a kernel driver for the I2C and
SPI interfaces. The command line utility provides a set of
convenience commands that support most of the functions of the SCMD
and is able to use the tty uart mode, SPI user land or the included
kernel driver in a uniform manor.
The use of the SCMD module is mostly for small robots and the like,
but it can control anything that is controllable by voltage.
libraries. We want to lint the private library code and we want to be able
to link against the lint libraries, for example llib-largon2 from cgdconfig
which is accessed via PROGDPLIBS.
andvar