From c74b374636554b47b6b0b2c3a5a529e0cd050a1d Mon Sep 17 00:00:00 2001
From: Andy CA6JAU <juribeparada@gmail.com>
Date: Sun, 20 Aug 2017 12:24:12 -0300
Subject: [PATCH] Adding watchdog to host serial port

---
 IO.cpp         | 4 ++++
 IO.h           | 3 ++-
 SerialPort.cpp | 9 +++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/IO.cpp b/IO.cpp
index b6882a4..1a93dbb 100644
--- a/IO.cpp
+++ b/IO.cpp
@@ -266,3 +266,7 @@ void CIO::resetWatchdog()
   m_watchdog = 0U;
 }
 
+uint32_t CIO::getWatchdog()
+{
+  return m_watchdog;
+}
diff --git a/IO.h b/IO.h
index 429fd1f..a7ae6d6 100644
--- a/IO.h
+++ b/IO.h
@@ -81,7 +81,8 @@ public:
   void     interrupt2(void);
 #endif
   void     resetWatchdog(void);
-
+  uint32_t getWatchdog(void);
+  
 #if defined(BIDIR_DATA_PIN)
   void  Data_dir_out(bool dir);
 #endif
diff --git a/SerialPort.cpp b/SerialPort.cpp
index 535059c..6a20f45 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -406,6 +406,10 @@ void CSerialPort::process()
         m_ptr = 1U;
         m_len = 0U;
       }
+      else {
+        m_ptr = 0U;
+        m_len = 0U;
+      }
     } else if (m_ptr == 1U) {
       // Handle the frame length
       m_len = m_buffer[m_ptr] = c;
@@ -645,6 +649,11 @@ void CSerialPort::process()
     }
   }
 
+  if (io.getWatchdog() >= 48000U) {
+    m_ptr = 0U;
+    m_len = 0U;
+  }
+  
 #if defined(SERIAL_REPEATER) || defined(SERIAL_REPEATER_USART1)
   // Drain any incoming serial data
   while (availableInt(3U))