Adding Misc chapter for other documents

books/beaglebone-cookbook/11misc/misc.rst

+.. _beaglebone-cookbook-misc:
+
+Misc
+####
+
+Here are bits and pieces of ideas that are being developed.
+
+Converting a tmp117 to a tmp 114
+================================
+
+Problem
+-------
+
+You have a tmp114 temperature sensor and you need a driver for it.
+
+Solution
+--------
+
+Find a similar driver and convert it to the tmp114.
+
+Let's first see if there is a driver for it already. Run the following on the bone using the tab key in place 
+of <tab>.
+
+.. code-block:: bash
+
+  bone$ modinfo tmp<tab><tab>
+  tmp006  tmp007  tmp102  tmp103  tmp108  tmp401  tmp421  tmp513
+  bone$ modinfo tmp
+
+Here you see a list of modules that match *tmp*, unfortunately *tmp114* is not there.
+Let's see if there are any matches in */lib/modules*.
+
+.. code-block:: bash
+
+    bone$  find /lib/modules/ -iname "*tmp*"
+    /lib/modules/5.10.168-ti-arm64-r104/kernel/drivers/iio/temperature/tmp006.ko.xz
+    /lib/modules/5.10.168-ti-arm64-r104/kernel/drivers/iio/temperature/tmp007.ko.xz
+    /lib/modules/5.10.168-ti-arm64-r104/kernel/drivers/hwmon/tmp103.ko.xz
+    /lib/modules/5.10.168-ti-arm64-r104/kernel/drivers/hwmon/tmp421.ko.xz
+    /lib/modules/5.10.168-ti-arm64-r104/kernel/drivers/hwmon/tmp108.ko.xz
+    /lib/modules/5.10.168-ti-arm64-r104/kernel/drivers/hwmon/tmp513.ko.xz
+    /lib/modules/5.10.168-ti-arm64-r104/kernel/drivers/hwmon/tmp401.ko.xz
+    /lib/modules/5.10.168-ti-arm64-r104/kernel/drivers/hwmon/tmp102.ko.xz
+
+Looks like the same list, but here we can see what type of driver it is, either *hwmon* or *iio*.
+hwmon is an older `harware monitor <https://docs.kernel.org/hwmon/hwmon-kernel-api.html>`_.  
+iio is the newer, and prefered, `Industrial IO driver
+<https://www.kernel.org/doc/html/v4.12/driver-api/iio/index.html>`_.
+Googling tmp006 and tmp007 shows that they are Infrared Thermopile Sensors, not the same at the *tmp114*.
+(Google it).  Let's keep looking for a more compatible device.
+
+Browse over to http://kernel.org to see if there are tmp114 drivers in the newer versions of the kernel.
+The first line in the table is **mainline**.  Click on the **browse** link on the right.
+Here you will see the top level of the Linux sourse tree for the *mainline* version of the kernel.
+Click on **drivers** and then **iio**. Finally, since tmp114 is a temperture sensor, click on **temperature**.
+Here you see all the source code for the iio temperature drivers for the mainline version of the kernel. 
+We've seen tmp006 and tmp007 before, tmp117 is new. Maybe it will work.  Click on **tmp117.c** to see the code.
+Looks like it also works for the tmp116.  Let's try convering it to work with the tmp114.
+
+A quick way to copy the code to the bone is to right-click on the **plain** link and select *Copy link address*.
+Then, on the bone enter **wget** and past the link.  Mine looks like the following, yours will be similar.
+
+.. code-block:: bash
+
+  bone$ wget https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/drivers/iio/temperature/tmp117.c?h=v6.4-rc7
+  bone$ mv 'tmp117.c?h=v6.4-rc7' tmp117.c
+  bone$ cp tmp117.c tmp114.c
+
+

books/beaglebone-cookbook/index.rst

@@ -6,7 +6,7 @@ BeagleBone Cookbook
 .. admonition:: Contributors
    
    - Author: `Mark A. Yoder <Mark.A.Yoder@Rose-Hulman.edu>`_
-   - Book revision: v2.0 beta
+   - Book revision: v2.1 beta
 
 A cookbook for programming Beagles
 
@@ -23,3 +23,4 @@ A cookbook for programming Beagles
    08realtime/realtime.rst
    09capes/capes.rst
    10parts/parts.rst
+   11misc/misc.rst