Docs: Add missing RST docs

Adds dcos.rst files for all modules lacking documentation.

Change-Id: Ief5594831d31fcb876381a4a3886382fab7d595e

2 files changed, 27 insertions, 0 deletions

diff --git a/pw_log_basic/BUILD.gn b/pw_log_basic/BUILD.gn
index 0efa82dd1..9e780585d 100644
--- a/pw_log_basic/BUILD.gn
+++ b/pw_log_basic/BUILD.gn
@@ -12,6 +12,8 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 
+import("$dir_pw_docgen/docs.gni")
+
 config("default_config") {
   include_dirs = [ "public" ]
 }
@@ -43,3 +45,7 @@ source_set("pw_log_basic_core") {
   public = [ "public/pw_log_basic/log_basic.h" ]
   sources = public + [ "log_basic.cc" ]
 }
+
+pw_doc_group("docs") {
+  sources = [ "docs.rst" ]
+}
diff --git a/pw_log_basic/docs.rst b/pw_log_basic/docs.rst
new file mode 100644
index 000000000..2b8ca4108
--- /dev/null
+++ b/pw_log_basic/docs.rst
@@ -0,0 +1,21 @@
+.. _chapter-pw-log-basic:
+
+.. default-domain:: cpp
+
+.. highlight:: sh
+
+------------
+pw_log_basic
+------------
+``pw_log_basic`` is a ``pw_log backend`` that sends logs over ``pw_sys_io``. The
+destination of ``pw_sys_io`` depends on the ``pw_sys_io`` backend in use. This
+is controlled by the ``dir_pw_sys_io_backend`` variable in a target's
+``target_config.gni``.
+information.
+
+This module employs an internal buffer for formatting log strings, and currently
+has a fixed size of 150 bytes. Any final log statements that are larger than
+149 bytes (one byte used for a null terminator) will be truncated.
+
+.. note::
+  The documentation for this module is currently incomplete.