README.Coding: add examples for good and bad comments

metze

diff --git a/README.Coding b/README.Coding
index ba70a3c53129b97e53303b7e90b4b085768fe0d5..b1ac2fe6666c48429e66c3dac74d45ae522c39e5 100644 (file)
--- a/README.Coding
+++ b/README.Coding
@@ -94,8 +94,79 @@ Comments
 --------
 
 Comments should always use the standard C syntax.  C++
-style comments are not currently allowed.
+style comments are not currently allowed. The lines before
+a comment should be empty. If the comment directly belongs
+to the following code, there should be no empty line after
+the comment. In case the comment contains a summary of
+mutliple following code blogs.
 
+This is good:
+
+       ...
+       int i;
+
+       /*
+        * This is a multi line comment,
+        * which explains the logical steps we have to do:
+        *
+        * 1. We need to set i=5, because...
+        * 2. We need to call complex_fn1
+        */
+
+       /* This is a one line comment about i = 5. */
+       i = 5;
+
+       /*
+        * This is a multi line comment,
+        * explaining the call to complex_fn1()
+        */
+       ret = complex_fn1();
+       if (ret != 0) {
+       ...
+
+       /**
+        * @brief This is a doxygen comment.
+        *
+        * This is a more detailed explanation of
+        * this simple function.
+        *
+        * @param[in]   param1     The parameter value of the function.
+        *
+        * @param[out]  result1    The result value of the function.
+        *
+        * @return              0 on success and -1 on error.
+        */
+       int example(int param1, int *result1);
+
+This is bad:
+
+       ...
+       int i;
+       /*
+        * This is a multi line comment,
+        * which explains the logical steps we have to do:
+        *
+        * 1. We need to set i=5, because...
+        * 2. We need to call complex_fn1
+        */
+       /* This is a one line comment about i = 5. */
+       i = 5;
+       /*
+        * This is a multi line comment,
+        * explaining the call to complex_fn1()
+        */
+       ret = complex_fn1();
+       if (ret != 0) {
+       ...
+
+       /*This is a one line comment.*/
+
+       /* This is a multi line comment,
+          with some more words...*/
+
+       /*
+        * This is a multi line comment,
+        * with some more words...*/
 
 Indention & Whitespace & 80 columns
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