From 5bec0d078055e304a305d11985e76f6fc2efa65b Mon Sep 17 00:00:00 2001
From: Hootie81 <chris.huitema@iinet.net.au>
Date: Fri, 20 Jul 2018 21:00:09 +1000
Subject: [PATCH] Add support VK6MST_Shield Serial pass-thru

---
 I2CTeensy.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/I2CTeensy.cpp b/I2CTeensy.cpp
index f034724..cfa5bb1 100644
--- a/I2CTeensy.cpp
+++ b/I2CTeensy.cpp
@@ -194,6 +194,16 @@ int CSerialPort::availableInt(uint8_t n)
   }
 }
 
+int CSerialPort::availableForWriteInt(uint8_t n)
+{
+  switch (n) {
+    case 3U:
+      return Serial3.availableForWrite();
+    default:
+      return false;
+  }
+}
+
 uint8_t CSerialPort::readInt(uint8_t n)
 {
   switch (n) {