From: Ian Jackson <ian@liberator.relativity.greenend.org.uk>
Date: Sat, 8 Jan 2011 20:50:13 +0000 (+0000)
Subject: realtime: tune the retransmission table, and change the time unit to be NMRADATA... 
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=9fd874642fcd4c87f0d9b7825503821277a53cec;p=trains.git

realtime: tune the retransmission table, and change the time unit to be NMRADATA bytes rather than queue entries
---

diff --git a/hostside/retransmit-table.h.gen b/hostside/retransmit-table.h.gen
index 469d230..5f401b9 100755
--- a/hostside/retransmit-table.h.gen
+++ b/hostside/retransmit-table.h.gen
@@ -1,8 +1,10 @@
 #!/usr/bin/perl
 
-$count= 20;
+$count= 17;
 $exp= 1.3;
-$first= 1.0;
+$first= 6.0; # units are bytes of command NMRADATA command sent to PICs.
+# A 3-byte (including checksum) NMRA command (which is the
+# smallest possible) produces 6 bytes.
 
 print <<END or die $!;
 #define SPEEDYCOUNT $count
diff --git a/hostside/retransmit.c b/hostside/retransmit.c
index 1c882df..8cb011a 100644
--- a/hostside/retransmit.c
+++ b/hostside/retransmit.c
@@ -68,7 +68,7 @@ static void debug_message(const PicInsn *pi, const Nmra *n) {
 static void retransmit_this(const PicInsn *pi) {
   if (DEBUGP(retransmit,message)) debug_message(pi, 0);
   serial_transmit(pi);
-  elapsed++;
+  elapsed += pi->l;
 }
 
 void retransmit_start(void) {