From 77e261f12089bd7db854d21fc81a42eaa60e0b67 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sat, 25 Jul 2015 17:35:57 +0200
Subject: o Even better debug code.

---
 Debug.h | 129 ++++++++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 101 insertions(+), 28 deletions(-)

(limited to 'Debug.h')

diff --git a/Debug.h b/Debug.h
index 455b6db..a5b3134 100644
--- a/Debug.h
+++ b/Debug.h
@@ -3,77 +3,150 @@
 
 #include "config.h"
 
-template <bool enable>
-class DebugImpl {
+enum DebugSink {
+  DEBUG_SINK_SERIAL,
+  DEBUG_SINK_SOFTWARE_SERIAL,
+  DEBUG_SINK_VOID,
+};
+
+template <enum DebugSink sink>
+class Debug {
 public:
+  inline void begin(unsigned int baud_rate);
+
+  inline operator bool();
+
+  inline bool available();
+
+  size_t write(uint8_t);
+
   template<typename T>
-  static inline
+  inline
   void print(T t, int format = DEC);
 
-  template<typename T>
-  static inline
-  void print(const T *t);
+  inline
+  void print(const char *t);
+
+  inline
+  void print(const __FlashStringHelper *t);
 
   template<typename T>
-  static inline
+  inline
   void println(T t, int format = DEC);
 
   template<typename T>
-  static inline
+  inline
   void println(const T *t);
 
-  static inline
+  inline
+  void println(const __FlashStringHelper *t);
+
+  inline
   void println();
+
+  inline
+  void flush();
 };
 
-template<bool enable>
+template<enum DebugSink sink>
+inline void Debug<sink>::begin(unsigned int baud_rate) {
+  if (sink == DEBUG_SINK_SERIAL) {
+    Serial.begin(baud_rate);
+  }
+}
+
+template<enum DebugSink sink>
+inline Debug<sink>::operator bool() {
+  if (sink == DEBUG_SINK_SERIAL) {
+    return Serial;
+  }
+
+  return false;
+}
+
+template<enum DebugSink sink>
+inline bool Debug<sink>::available() {
+  if (sink == DEBUG_SINK_SERIAL) {
+    return Serial.available();
+  }
+
+  return false;
+}
+
+template<enum DebugSink sink>
+inline size_t Debug<sink>::write(uint8_t value) {
+  if (sink == DEBUG_SINK_SERIAL) {
+    return Serial.write(value);
+  }
+
+  return 0;
+}
+
+template<enum DebugSink sink>
 template<typename T>
 inline
-void DebugImpl<enable>::print(T t, int format) {
-  if (enable) {
+void Debug<sink>::print(T t, int format) {
+  if (sink == DEBUG_SINK_SERIAL) {
     Serial.print(t, format);
   }
 }
 
-template<bool enable>
-template<typename T>
+template<enum DebugSink sink>
 inline
-void DebugImpl<enable>::print(const T *t) {
-  if (enable) {
+void Debug<sink>::print(const char *t) {
+  if (sink == DEBUG_SINK_SERIAL) {
+    Serial.print(t);
+  }
+}
+template<enum DebugSink sink>
+inline
+void Debug<sink>::print(const __FlashStringHelper *t) {
+  if (sink == DEBUG_SINK_SERIAL) {
     Serial.print(t);
   }
 }
 
-template<bool enable>
+template<enum DebugSink sink>
 template<typename T>
 inline
-void DebugImpl<enable>::println(T t, int format) {
-  if (enable) {
+void Debug<sink>::println(T t, int format) {
+  if (sink == DEBUG_SINK_SERIAL) {
     Serial.println(t, format);
   }
 }
 
-template<bool enable>
+template<enum DebugSink sink>
 template<typename T>
 inline
-void DebugImpl<enable>::println(const T *t) {
-  if (enable) {
+void Debug<sink>::println(const T *t) {
+  if (sink == DEBUG_SINK_SERIAL) {
+    Serial.println(t);
+  }
+}
+
+template<enum DebugSink sink>
+inline
+void Debug<sink>::println(const __FlashStringHelper *t) {
+  if (sink == DEBUG_SINK_SERIAL) {
     Serial.println(t);
   }
 }
 
-template<bool enable>
+template<enum DebugSink sink>
 inline
-void DebugImpl<enable>::println() {
-  if (enable) {
+void Debug<sink>::println() {
+  if (sink == DEBUG_SINK_SERIAL) {
     Serial.println();
   }
 }
 
-#if ENABLE_DEBUG_LOG == 1
-typedef DebugImpl<false> Debug;
+#if DEBUG_SINK == 1
+static Debug<DEBUG_SINK_VOID> debug;
+#elif DEBUG_SINK == 2
+static Debug<DEBUG_SINK_SERIAL> debug;
 #else
-typedef DebugImpl<true> Debug;
+#error Invalid value for DEBUG_SINK, must be one of 1 (for no output), 2 for serial port
+// , or 3 for software serial.
 #endif
 
 #endif
-- 
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