From 856e5dcfa49899ac9231ee2f78c1dc9ab66681a2 Mon Sep 17 00:00:00 2001
From: "David A. Mellis" <d.mellis@arduino.cc>
Date: Fri, 26 Aug 2011 16:08:14 -0400
Subject: [PATCH] Moving write errors out of return value into separate API
 methods.

write(), print(), println() now return size_t (and don't use negative values to signal errors).
Print adds writeError() for checking for write errors, clearWriteError() to reset the flag to false, and a protected setWriteError() for signalling errors.

http://code.google.com/p/arduino/issues/detail?id=598
---
 LiquidCrystal.cpp | 2 +-
 LiquidCrystal.h   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/LiquidCrystal.cpp b/LiquidCrystal.cpp
index 67f4694..81a3b7f 100644
--- a/LiquidCrystal.cpp
+++ b/LiquidCrystal.cpp
@@ -258,7 +258,7 @@ inline void LiquidCrystal::command(uint8_t value) {
   send(value, LOW);
 }
 
-inline ssize_t LiquidCrystal::write(uint8_t value) {
+inline size_t LiquidCrystal::write(uint8_t value) {
   send(value, HIGH);
   return 1; // assume sucess
 }
diff --git a/LiquidCrystal.h b/LiquidCrystal.h
index 4491424..f4352f3 100755
--- a/LiquidCrystal.h
+++ b/LiquidCrystal.h
@@ -79,7 +79,7 @@ public:
 
   void createChar(uint8_t, uint8_t[]);
   void setCursor(uint8_t, uint8_t); 
-  virtual ssize_t write(uint8_t);
+  virtual size_t write(uint8_t);
   void command(uint8_t);
 private:
   void send(uint8_t, uint8_t);