From: gnawali <gnawali>
Date: Tue, 13 Nov 2007 08:36:29 +0000 (+0000)
Subject: ascii graphics that shows how we get to the head of the footer
X-Git-Tag: release_tinyos_2_1_0_0~662
X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=commitdiff_plain;h=89852a0608cecc887ff3833528276cb90032783d;hp=a2604c3e6df65562e5c8bc74f059cb832a5f9150;p=tinyos-2.x.git

ascii graphics that shows how we get to the head of the footer
---

diff --git a/tos/lib/net/le/LinkEstimatorP.nc b/tos/lib/net/le/LinkEstimatorP.nc
index c18e9f19..57bd8e87 100644
--- a/tos/lib/net/le/LinkEstimatorP.nc
+++ b/tos/lib/net/le/LinkEstimatorP.nc
@@ -649,6 +649,20 @@ implementation {
 	}
       }
 
+
+      /* Graphical explanation of how we get to the head of the
+       * footer in the following code 
+       * <---------------------- payloadLen ------------------->
+       * -------------------------------------------------------
+       * linkest_header_t  | payload  | linkest_footer_t* ...|
+       * -------------------------------------------------------
+       * ^                              ^                      ^
+       * |                              |                      |
+       * subpayload                     |                      payloadEnd
+       *                                |
+       *                                payloadEnd - footersize*num footers
+      */
+
       if ((nidx != INVALID_RVAL) && (num_entries > 0)) {
 	uint8_t payloadLen = call SubPacket.payloadLength(msg);
 	void* subPayload = call SubPacket.getPayload(msg, payloadLen);