From 75adce4924b3df9523c1668c78d81f5754764b04 Mon Sep 17 00:00:00 2001
From: aaknitt <andyknitt@gmail.com>
Date: Thu, 31 Oct 2019 13:53:55 -0500
Subject: [PATCH] Update lin.cpp

moved/added serial.flush() to Lin::recv to allow sync byte and ID byte to send properly before txPin is flipped to an INPUT.
---
 lin.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lin.cpp b/lin.cpp
index ce5123a..657b978 100644
--- a/lin.cpp
+++ b/lin.cpp
@@ -135,11 +135,12 @@ uint8_t Lin::recv(uint8_t addr, uint8_t* message, uint8_t nBytes,uint8_t proto)
   uint8_t bytesRcvd=0;
   unsigned int timeoutCount=0;
   serialBreak();       // Generate the low signal that exceeds 1 char.
-  serial.flush();
   serial.write(0x55);  // Sync byte
+  serial.flush();
   uint8_t idByte = (addr&0x3f) | addrParity(addr);
   //p("ID byte %d", idByte);
   serial.write(idByte);  // ID byte
+  serial.flush();
   pinMode(txPin, INPUT);
   digitalWrite(txPin, LOW);  // don't pull up
   do { // I hear myself