documentation

git-svn-id: https://svn.kapsi.fi/jpa/nanopb@969 e3a754e5-d11d-0410-8d38-ebb782a927b9

docs/index.rst

@@ -21,10 +21,10 @@ So a typical project might include these files:
 
 1) Nanopb runtime library:
     - pb.h
-    - pb_decode.h and pb_decode.c
-    - pb_encode.h and pb_encode.c
+    - pb_decode.h and pb_decode.c (needed for decoding messages)
+    - pb_encode.h and pb_encode.c (needed for encoding messages)
 2) Protocol description (you can have many):
-    - person.proto
+    - person.proto (just an example)
     - person.c (autogenerated, contains initializers for const arrays)
     - person.h (autogenerated, contains type declarations)
 
@@ -59,12 +59,12 @@ For starters, consider this simple message::
     required int32 value = 1;
  }
 
-Save this in *example.proto* and compile it::
+Save this in *message.proto* and compile it::
 
     user@host:~$ protoc -omessage.pb message.proto
-    user@host:~$ python ../generator/nanopb_generator.py message.pb
+    user@host:~$ python nanopb/generator/nanopb_generator.py message.pb
 
-You should now have in *example.h*::
+You should now have in *message.pb.h*::
 
  typedef struct {
     int32_t value;
@@ -81,7 +81,20 @@ Now in your main program do this to encode a message::
 
 After that, buffer will contain the encoded message.
 The number of bytes in the message is stored in *stream.bytes_written*.
-You can feed the message to *protoc --decode=Example example.proto* to verify its validity.
+You can feed the message to *protoc --decode=Example message.proto* to verify its validity.
+
+For complete examples of the simple cases, see *tests/test_decode1.c* and *tests/test_encode1.c*. For an example with network interface, see the *example* subdirectory.
+
+Compiler requirements
+=====================
+Nanopb should compile with most ansi-C compatible compilers. It however requires a few header files to be available:
+
+#) *string.h*, with these functions: *strlen*, *memcpy*, *memset*
+#) *stdint.h*, for definitions of *int32_t* etc.
+#) *stddef.h*, for definition of *size_t*
+#) *stdbool.h*, for definition of *bool*
+
+If these header files do not come with your compiler, you should be able to find suitable replacements online. Mostly the requirements are very simple, just a few basic functions and typedefs.
 
 Debugging and testing
 =====================