Serial 1-wire bus master driver for Linux

Build Out-of-Tree (fast way)

• To build the module, you may need to install kernel headers and makefiles if you have not done so already:

  $ sudo yum install -y kernel-devel
  or
  $ sudo apt-get install -y linux-headers-$(uname -r)

• Build module:

  $ cd kernel/module
$ make

• Load module:

  $ sudo modprobe wire
$ sudo insmod ./ser1wm.ko

Build In-Tree (preferred way)

• Download and unpack kernel source (rpi kernel source)

• Optionally apply patches from patches directory:

  $ patch -p1 < /path/to/enhancement_w1_touchblock.patch
$ patch -p1 < /path/to/enhancement_w1_resetcounter.patch
$ patch -p1 < /path/to/fix_w1_slavecount.patch
$ patch -p1 < /path/to/fix_w1_loadmodule.patch
$ patch -p1 < /path/to/fix_w1_thermpullup.patch

• Add driver to kernel source tree:

  $ cp /path/to/ser1wm.c drivers/w1/masters
$ patch -p1 < /path/to/intree-ser1wm.patch

• Configure, make and install modules as usual:

  $ make menuconfig
$ make modules
$ sudo make modules_install

Usage

• Build ser1wm_attach

  $ cd user/attach
$ make

• Attach driver to serial line to which serial 1-wire bus master is connected:

  $ sudo ./ser1wm_attach /dev/ttyUSB0

  or attach driver to TCP-port on which network 1-wire bus master is listening:

  $ sudo ./ser1wm_attach 10.0.0.2:4232

• Optionally create udev rules to automatically attach driver when serial devices appear as shown in this example.