Revert "Merge branch 'master' of github.com:arduino/Arduino into diskloader_reboot"

This reverts commit df9835efafd13685251749bc210c0b96a18a96a5, reversing
changes made to ec45af8bfa9222a807c075dd1db4b5aa798bba03.

Conflicts:

	hardware/arduino/variants/mega/pins_arduino.h
	libraries/Ethernet/examples/PachubeClientString/PachubeClientString.ino

Author: zeveland

hardware/arduino/cores/arduino/HardwareSerial.h

@@ -32,6 +32,7 @@ class HardwareSerial : public Stream
 {
   private:
     ring_buffer *_rx_buffer;
+    ring_buffer *_tx_buffer;
     volatile uint8_t *_ubrrh;
     volatile uint8_t *_ubrrl;
     volatile uint8_t *_ucsra;
@@ -40,28 +41,29 @@ class HardwareSerial : public Stream
     uint8_t _rxen;
     uint8_t _txen;
     uint8_t _rxcie;
-    uint8_t _udre;
+    uint8_t _udrie;
     uint8_t _u2x;
   public:
-    HardwareSerial(ring_buffer *rx_buffer,
+    HardwareSerial(ring_buffer *rx_buffer, ring_buffer *tx_buffer,
       volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
       volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
       volatile uint8_t *udr,
-      uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udre, uint8_t u2x);
+      uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udrie, uint8_t u2x);
     void begin(unsigned long);
     void end();
     virtual int available(void);
     virtual int peek(void);
     virtual int read(void);
     virtual void flush(void);
-    virtual void write(uint8_t);
+    virtual size_t write(uint8_t);
     using Print::write; // pull in write(str) and write(buf, size) from Print
 };
 
 #if defined(UBRRH) || defined(UBRR0H)
   extern HardwareSerial Serial;
 #elif defined(USBCON)
-  #include "usb_api.h"
+  #include "USBAPI.h"
+//  extern HardwareSerial Serial_;  
 #endif
 #if defined(UBRR1H)
   extern HardwareSerial Serial1;
@@ -73,4 +75,6 @@ class HardwareSerial : public Stream
   extern HardwareSerial Serial3;
 #endif
 
+extern void serialEventRun(void) __attribute__((weak));
+
 #endif

hardware/arduino/cores/arduino/Print.cpp

@@ -23,173 +23,213 @@
 #include <stdio.h>
 #include <string.h>
 #include <math.h>
-#include "wiring.h"
+#include "Arduino.h"
 
 #include "Print.h"
 
 // Public Methods //////////////////////////////////////////////////////////////
 
 /* default implementation: may be overridden */
-void Print::write(const char *str)
+size_t Print::write(const uint8_t *buffer, size_t size)
 {
-  while (*str)
-    write(*str++);
+  size_t n = 0;
+  while (size--) {
+    n += write(*buffer++);
+  }
+  return n;
 }
 
-/* default implementation: may be overridden */
-void Print::write(const uint8_t *buffer, size_t size)
+size_t Print::print(const __FlashStringHelper *ifsh)
 {
-  while (size--)
-    write(*buffer++);
+  const prog_char *p = (const prog_char *)ifsh;
+  size_t n = 0;
+  while (1) {
+    unsigned char c = pgm_read_byte(p++);
+    if (c == 0) break;
+    n += write(c);
+  }
+  return n;
 }
 
-void Print::print(const String &s)
+size_t Print::print(const String &s)
 {
-  for (unsigned int i = 0; i < s.length(); i++) {
-    write(s[i]);
+  size_t n = 0;
+  for (uint16_t i = 0; i < s.length(); i++) {
+    n += write(s[i]);
   }
+  return n;
 }
 
-void Print::print(const char str[])
+size_t Print::print(const char str[])
 {
-  write(str);
+  return write(str);
 }
 
-void Print::print(char c, int base)
+size_t Print::print(char c)
 {
-  print((long) c, base);
+  return write(c);
 }
 
-void Print::print(unsigned char b, int base)
+size_t Print::print(unsigned char b, int base)
 {
-  print((unsigned long) b, base);
+  return print((unsigned long) b, base);
 }
 
-void Print::print(int n, int base)
+size_t Print::print(int n, int base)
 {
-  print((long) n, base);
+  return print((long) n, base);
 }
 
-void Print::print(unsigned int n, int base)
+size_t Print::print(unsigned int n, int base)
 {
-  print((unsigned long) n, base);
+  return print((unsigned long) n, base);
 }
 
-void Print::print(long n, int base)
+size_t Print::print(long n, int base)
 {
   if (base == 0) {
-    write(n);
+    return write(n);
   } else if (base == 10) {
     if (n < 0) {
-      print('-');
+      int t = print('-');
       n = -n;
+      return printNumber(n, 10) + t;
     }
-    printNumber(n, 10);
+    return printNumber(n, 10);
   } else {
-    printNumber(n, base);
+    return printNumber(n, base);
   }
 }
 
-void Print::print(unsigned long n, int base)
+size_t Print::print(unsigned long n, int base)
 {
-  if (base == 0) write(n);
-  else printNumber(n, base);
+  if (base == 0) return write(n);
+  else return printNumber(n, base);
 }
 
-void Print::print(double n, int digits)
+size_t Print::print(double n, int digits)
 {
-  printFloat(n, digits);
+  return printFloat(n, digits);
 }
 
-void Print::println(void)
+size_t Print::println(const __FlashStringHelper *ifsh)
 {
-  print('\r');
-  print('\n');  
+  size_t n = print(ifsh);
+  n += println();
+  return n;
 }
 
-void Print::println(const String &s)
+size_t Print::print(const Printable& x)
 {
-  print(s);
-  println();
+  return x.printTo(*this);
 }
 
-void Print::println(const char c[])
+size_t Print::println(void)
 {
-  print(c);
-  println();
+  size_t n = print('\r');
+  n += print('\n');
+  return n;
 }
 
-void Print::println(char c, int base)
+size_t Print::println(const String &s)
 {
-  print(c, base);
-  println();
+  size_t n = print(s);
+  n += println();
+  return n;
 }
 
-void Print::println(unsigned char b, int base)
+size_t Print::println(const char c[])
 {
-  print(b, base);
-  println();
+  size_t n = print(c);
+  n += println();
+  return n;
 }
 
-void Print::println(int n, int base)
+size_t Print::println(char c)
 {
-  print(n, base);
-  println();
+  size_t n = print(c);
+  n += println();
+  return n;
 }
 
-void Print::println(unsigned int n, int base)
+size_t Print::println(unsigned char b, int base)
 {
-  print(n, base);
-  println();
+  size_t n = print(b, base);
+  n += println();
+  return n;
 }
 
-void Print::println(long n, int base)
+size_t Print::println(int num, int base)
 {
-  print(n, base);
-  println();
+  size_t n = print(num, base);
+  n += println();
+  return n;
 }
 
-void Print::println(unsigned long n, int base)
+size_t Print::println(unsigned int num, int base)
 {
-  print(n, base);
-  println();
+  size_t n = print(num, base);
+  n += println();
+  return n;
 }
 
-void Print::println(double n, int digits)
+size_t Print::println(long num, int base)
 {
-  print(n, digits);
-  println();
+  size_t n = print(num, base);
+  n += println();
+  return n;
 }
 
-// Private Methods /////////////////////////////////////////////////////////////
+size_t Print::println(unsigned long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
 
-void Print::printNumber(unsigned long n, uint8_t base)
+size_t Print::println(double num, int digits)
 {
-  unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars. 
-  unsigned long i = 0;
+  size_t n = print(num, digits);
+  n += println();
+  return n;
+}
 
-  if (n == 0) {
-    print('0');
-    return;
-  } 
+size_t Print::println(const Printable& x)
+{
+  size_t n = print(x);
+  n += println();
+  return n;
+}
 
-  while (n > 0) {
-    buf[i++] = n % base;
+// Private Methods /////////////////////////////////////////////////////////////
+
+size_t Print::printNumber(unsigned long n, uint8_t base) {
+  char buf[8 * sizeof(long) + 1]; // Assumes 8-bit chars plus zero byte.
+  char *str = &buf[sizeof(buf) - 1];
+
+  *str = '\0';
+
+  // prevent crash if called with base == 1
+  if (base < 2) base = 10;
+
+  do {
+    unsigned long m = n;
     n /= base;
-  }
+    char c = m - base * n;
+    *--str = c < 10 ? c + '0' : c + 'A' - 10;
+  } while(n);
 
-  for (; i > 0; i--)
-    print((char) (buf[i - 1] < 10 ?
-      '0' + buf[i - 1] :
-      'A' + buf[i - 1] - 10));
+  return write(str);
 }
 
-void Print::printFloat(double number, uint8_t digits) 
+size_t Print::printFloat(double number, uint8_t digits) 
 { 
+  size_t n = 0;
+  
   // Handle negative numbers
   if (number < 0.0)
   {
-     print('-');
+     n += print('-');
      number = -number;
   }
 
@@ -203,18 +243,21 @@ void Print::printFloat(double number, uint8_t digits)
   // Extract the integer part of the number and print it
   unsigned long int_part = (unsigned long)number;
   double remainder = number - (double)int_part;
-  print(int_part);
+  n += print(int_part);
 
   // Print the decimal point, but only if there are digits beyond
-  if (digits > 0)
-    print("."); 
+  if (digits > 0) {
+    n += print("."); 
+  }
 
   // Extract digits from the remainder one at a time
   while (digits-- > 0)
   {
     remainder *= 10.0;
     int toPrint = int(remainder);
-    print(toPrint);
+    n += print(toPrint);
     remainder -= toPrint; 
   } 
+  
+  return n;
 }