From 2b1c9aea350e883c040bc168fde55934d77c5f47 Mon Sep 17 00:00:00 2001
From: "David A. Mellis" <d.mellis@arduino.cc>
Date: Mon, 2 Aug 2010 22:23:48 +0000
Subject: [PATCH] changing available() to return an int (because the Ethernet
 Client class or another stream might need more than 255 bytes).

---
 cores/arduino/HardwareSerial.cpp | 2 +-
 cores/arduino/HardwareSerial.h   | 2 +-
 cores/arduino/Stream.h           | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp
index f8cdebe..43322ae 100755
--- a/cores/arduino/HardwareSerial.cpp
+++ b/cores/arduino/HardwareSerial.cpp
@@ -173,7 +173,7 @@ void HardwareSerial::end()
   cbi(*_ucsrb, _rxcie);  
 }
 
-uint8_t HardwareSerial::available(void)
+int HardwareSerial::available(void)
 {
   return (RX_BUFFER_SIZE + _rx_buffer->head - _rx_buffer->tail) % RX_BUFFER_SIZE;
 }
diff --git a/cores/arduino/HardwareSerial.h b/cores/arduino/HardwareSerial.h
index 884f9fe..1770a63 100755
--- a/cores/arduino/HardwareSerial.h
+++ b/cores/arduino/HardwareSerial.h
@@ -48,7 +48,7 @@ class HardwareSerial : public Stream
       uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udre, uint8_t u2x);
     void begin(long);
     void end();
-    virtual uint8_t available(void);
+    virtual int available(void);
     virtual int peek(void);
     virtual int read(void);
     virtual void flush(void);
diff --git a/cores/arduino/Stream.h b/cores/arduino/Stream.h
index 1d3e50b..1c72ec2 100644
--- a/cores/arduino/Stream.h
+++ b/cores/arduino/Stream.h
@@ -26,7 +26,7 @@
 class Stream : public Print
 {
   public:
-    virtual uint8_t available() = 0;
+    virtual int available() = 0;
     virtual int peek() = 0;
     virtual int read() = 0;
     virtual void flush() = 0;