Revision 0:5ebc917ebd09, committed 2015-02-05

Comitter:

itead

Date:

Thu Feb 05 07:24:30 2015 +0000

Child:

1:2179048af332

Commit message:

First commit for ArduinoAPI library by Wu Pengfei<pengfei.wu@itead.cc>

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ArduinoAPI.h	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,10 @@
+#ifndef __ARDUINOAPI_H__
+#define __ARDUINOAPI_H__
+
+#include "itoas.h"
+#include "time.h"
+#include "WString.h"
+#include "Print.h"
+#include "ArduinoSerial.h"
+
+#endif /* #ifndef __ARDUINOAPI_H__ */
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ArduinoSerial.cpp	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,161 @@
+#include "ArduinoSerial.h"
+
+ArduinoSerialLinkedNode ArduinoSerial::ms_list_head = {NULL, NULL};
+unsigned int ArduinoSerial::ms_instance_counter = 0;
+
+void ArduinoSerial::uartIrqCallback(void) {
+    ArduinoSerialLinkedNode *p;
+    for (p = ms_list_head.next; p != &ms_list_head; p = p->next) {
+        if (p->data != NULL) {
+            while(p->data->readable()) {
+                p->data->writeChr(p->data->getc());
+            }
+        }
+    }
+}
+
+ArduinoSerial::ArduinoSerial(PinName tx, PinName rx):Serial(tx, rx) {
+    ms_instance_counter++;
+    if (ms_instance_counter == 1) {
+        initHeadNode(&ms_list_head);
+    }
+    
+    if (addNode(&ms_list_head, this) != NULL) {
+        this->attach(&uartIrqCallback);   
+    } else {
+    }
+}
+
+ArduinoSerial::~ArduinoSerial(void) {
+    ms_instance_counter--;
+    if (delNode(&ms_list_head, this) != NULL) {
+        this->attach(NULL); 
+    } else {
+    }
+}
+    
+void ArduinoSerial::begin(int baud_rate) {
+    baud(baud_rate);
+    flush();
+}
+    
+int ArduinoSerial::available(void) {
+    return (unsigned int)(ARDUINOSERIAL_BUFFER_SIZE + m_rx_buffer.head - m_rx_buffer.tail) % ARDUINOSERIAL_BUFFER_SIZE;
+}
+
+void ArduinoSerial::flush(void)
+{
+    memset(&m_rx_buffer, 0, sizeof(m_rx_buffer));
+}
+
+char ArduinoSerial::readChr(void) {
+    // if the head isn't ahead of the tail, we don't have any characters
+    if (m_rx_buffer.head == m_rx_buffer.tail) {
+        return (char)-1;
+    } else {
+        unsigned char c = m_rx_buffer.buffer[m_rx_buffer.tail];
+        m_rx_buffer.tail = (unsigned int)(m_rx_buffer.tail + 1) % ARDUINOSERIAL_BUFFER_SIZE;
+        return c;
+    }
+}
+
+void ArduinoSerial::setTimeout(unsigned long millisecond) {
+    m_find_timeout = millisecond;
+}
+
+bool ArduinoSerial::find(const char *str) {
+    bool ret = false;
+    String data;
+    char c;
+    unsigned long i;
+    for (i = 0; i < m_find_timeout; i++) {
+        while(available() > 0) {
+            c = readChr();
+            data += c;
+        }
+        if (data.indexOf(String(str)) != -1) {
+            ret = true;
+            break;
+        }
+        wait_ms(1);
+    }
+    return ret;
+}
+
+size_t ArduinoSerial::write(uint8_t data) {
+    putc(data);
+    return 1;
+}
+
+void ArduinoSerial::writeChr(unsigned char c) {
+    int i = (unsigned int)(m_rx_buffer.head + 1) % ARDUINOSERIAL_BUFFER_SIZE;
+
+    // if we should be storing the received character into the location
+    // just before the tail (meaning that the head would advance to the
+    // current location of the tail), we're about to overflow the buffer
+    // and so we don't write the character or advance the head.
+    if (i != m_rx_buffer.tail) {
+        m_rx_buffer.buffer[m_rx_buffer.head] = c;
+        m_rx_buffer.head = i;
+    }
+}
+
+ArduinoSerialLinkedNode *ArduinoSerial::initHeadNode(ArduinoSerialLinkedNode *head) {
+    if (head == NULL) {
+        return NULL;
+    }
+    head->data = NULL;
+    head->next = head;
+    return head;
+}
+
+ArduinoSerialLinkedNode *ArduinoSerial::addNode(ArduinoSerialLinkedNode *head, ArduinoSerial* data) {
+    ArduinoSerialLinkedNode *p;
+    ArduinoSerialLinkedNode *node = (ArduinoSerialLinkedNode *)malloc(sizeof(ArduinoSerialLinkedNode));
+    if (node == NULL) {
+        return NULL;
+    }
+    /* Setting node */
+    node->data = data;
+    node->next = head;
+    
+    /* Add node to tail */
+    for(p = head; p->next != head; p = p->next);
+    p->next = node;
+    
+    return head;
+}
+ArduinoSerialLinkedNode *ArduinoSerial::delNode(ArduinoSerialLinkedNode *head, ArduinoSerial* data) {
+    ArduinoSerialLinkedNode *p;
+    ArduinoSerialLinkedNode *prev;
+    
+    if (head == NULL) {
+        return NULL;
+    }
+    
+    prev = head, p = head->next; 
+    while(p != head) {
+        if (p->data == data) {
+            prev->next = p->next;
+            free(p);
+            p = prev->next;
+        } else {
+            prev = p;
+            p = p->next;    
+        }
+    }
+    return head;
+}
+ArduinoSerialLinkedNode *ArduinoSerial::findNode(ArduinoSerialLinkedNode *head, ArduinoSerial* data) {
+    ArduinoSerialLinkedNode *p;
+    if (head == NULL) {
+        return NULL;
+    }
+    
+    for (p = head->next; p != head; p = p->next) {
+        if (p->data == data) {
+            return p;
+        }
+    }
+    return NULL;
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ArduinoSerial.h	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,60 @@
+#ifndef __ARDUINOAPI_ARDUINOSERIAL_H__
+#define __ARDUINOAPI_ARDUINOSERIAL_H__
+
+#include "Print.h"
+#include "WString.h"
+
+typedef enum {
+    ARDUINOSERIAL_BUFFER_SIZE = 4096,
+} ArduinoSerialConstant;
+
+typedef struct {
+    unsigned char buffer[ARDUINOSERIAL_BUFFER_SIZE];
+    volatile unsigned int head;
+    volatile unsigned int tail;
+} ArduinoSerialRingBuffer;
+
+class ArduinoSerial;
+
+typedef struct ArduinoSerialLinkedNode{
+    ArduinoSerial* data;
+    struct ArduinoSerialLinkedNode *next;
+} ArduinoSerialLinkedNode;
+
+class ArduinoSerial: public Serial, public Print
+{
+public:
+    ArduinoSerial(PinName tx, PinName rx);
+    
+    virtual ~ArduinoSerial(void);
+    
+    void begin(int baud_rate);
+    
+    int available(void);
+
+    void flush(void);
+    
+    char readChr(void);
+    
+    void setTimeout(unsigned long millisecond);
+    
+    bool find(const char *str);
+    
+private:
+    static void uartIrqCallback(void);
+    static ArduinoSerialLinkedNode *initHeadNode(ArduinoSerialLinkedNode *head);
+    static ArduinoSerialLinkedNode *addNode(ArduinoSerialLinkedNode *head, ArduinoSerial* data);
+    static ArduinoSerialLinkedNode *delNode(ArduinoSerialLinkedNode *head, ArduinoSerial* data);
+    static ArduinoSerialLinkedNode *findNode(ArduinoSerialLinkedNode *head, ArduinoSerial* data);
+    
+    static ArduinoSerialLinkedNode ms_list_head;
+    static unsigned int ms_instance_counter;
+    
+    virtual size_t write(uint8_t data);
+    void writeChr(unsigned char c);
+ 
+    ArduinoSerialRingBuffer m_rx_buffer;
+    unsigned long m_find_timeout;
+};
+
+#endif /* #ifndef __ARDUINOAPI_ARDUINOSERIAL_H__ */
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Print.cpp	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,237 @@
+/*
+ Print.cpp - Base class that provides print() and println()
+ Copyright (c) 2008 David A. Mellis.  All right reserved.
+ 
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+ 
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+ 
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ 
+ Modified 23 November 2006 by David A. Mellis
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#include "Print.h"
+
+// Public Methods //////////////////////////////////////////////////////////////
+
+/* default implementation: may be overridden */
+size_t Print::write(const uint8_t *buffer, size_t size)
+{
+  size_t n = 0;
+  while (size--) {
+    n += write(*buffer++);
+  }
+  return n;
+}
+
+
+size_t Print::print(const String &s)
+{
+  size_t n = 0;
+  for (uint16_t i = 0; i < s.length(); i++) {
+    n += write(s[i]);
+  }
+  return n;
+}
+
+size_t Print::print(const char str[])
+{
+  return write(str);
+}
+
+size_t Print::print(char c)
+{
+  return write(c);
+}
+
+size_t Print::print(unsigned char b, int base)
+{
+  return print((unsigned long) b, base);
+}
+
+size_t Print::print(int n, int base)
+{
+  return print((long) n, base);
+}
+
+size_t Print::print(unsigned int n, int base)
+{
+  return print((unsigned long) n, base);
+}
+
+size_t Print::print(long n, int base)
+{
+  if (base == 0) {
+    return write(n);
+  } else if (base == 10) {
+    if (n < 0) {
+      int t = print('-');
+      n = -n;
+      return printNumber(n, 10) + t;
+    }
+    return printNumber(n, 10);
+  } else {
+    return printNumber(n, base);
+  }
+}
+
+size_t Print::print(unsigned long n, int base)
+{
+  if (base == 0) return write(n);
+  else return printNumber(n, base);
+}
+
+size_t Print::print(double n, int digits)
+{
+  return printFloat(n, digits);
+}
+
+size_t Print::println(void)
+{
+  size_t n = print('\r');
+  n += print('\n');
+  return n;
+}
+
+size_t Print::println(const String &s)
+{
+  size_t n = print(s);
+  n += println();
+  return n;
+}
+
+size_t Print::println(const char c[])
+{
+  size_t n = print(c);
+  n += println();
+  return n;
+}
+
+size_t Print::println(char c)
+{
+  size_t n = print(c);
+  n += println();
+  return n;
+}
+
+size_t Print::println(unsigned char b, int base)
+{
+  size_t n = print(b, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(int num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(unsigned int num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(unsigned long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(double num, int digits)
+{
+  size_t n = print(num, digits);
+  n += println();
+  return n;
+}
+
+// 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);
+
+  return write(str);
+}
+
+size_t Print::printFloat(double number, uint8_t digits) 
+{ 
+  size_t n = 0;
+  
+  if (isnan(number)) return print("nan");
+  if (isinf(number)) return print("inf");
+  if (number > 4294967040.0) return print ("ovf");  // constant determined empirically
+  if (number <-4294967040.0) return print ("ovf");  // constant determined empirically
+  
+  // Handle negative numbers
+  if (number < 0.0)
+  {
+     n += print('-');
+     number = -number;
+  }
+
+  // Round correctly so that print(1.999, 2) prints as "2.00"
+  double rounding = 0.5;
+  for (uint8_t i=0; i<digits; ++i)
+    rounding /= 10.0;
+  
+  number += rounding;
+
+  // Extract the integer part of the number and print it
+  unsigned long int_part = (unsigned long)number;
+  double remainder = number - (double)int_part;
+  n += print(int_part);
+
+  // Print the decimal point, but only if there are digits beyond
+  if (digits > 0) {
+    n += print("."); 
+  }
+
+  // Extract digits from the remainder one at a time
+  while (digits-- > 0)
+  {
+    remainder *= 10.0;
+    int toPrint = int(remainder);
+    n += print(toPrint);
+    remainder -= toPrint; 
+  } 
+  
+  return n;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Print.h	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,78 @@
+/*
+  Print.h - Base class that provides print() and println()
+  Copyright (c) 2008 David A. Mellis.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef __ARDUINOAPI_PRINT_H__
+#define __ARDUINOAPI_PRINT_H__
+#ifdef __cplusplus
+
+#include <inttypes.h>
+#include <stdio.h> // for size_t
+
+#include "WString.h"
+
+
+#define DEC 10
+#define HEX 16
+#define OCT 8
+#define BIN 2
+
+class Print
+{
+  private:
+    int write_error;
+    size_t printNumber(unsigned long, uint8_t);
+    size_t printFloat(double, uint8_t);
+  protected:
+    void setWriteError(int err = 1) { write_error = err; }
+  public:
+    Print() : write_error(0) {}
+  
+    int getWriteError() { return write_error; }
+    void clearWriteError() { setWriteError(0); }
+  
+    virtual size_t write(uint8_t) = 0;
+    size_t write(const char *str) {
+      if (str == NULL) return 0;
+      return write((const uint8_t *)str, strlen(str));
+    }
+    virtual size_t write(const uint8_t *buffer, size_t size);
+    
+    size_t print(const String &);
+    size_t print(const char[]);
+    size_t print(char);
+    size_t print(unsigned char, int = DEC);
+    size_t print(int, int = DEC);
+    size_t print(unsigned int, int = DEC);
+    size_t print(long, int = DEC);
+    size_t print(unsigned long, int = DEC);
+    size_t print(double, int = 2);
+
+    size_t println(const String &s);
+    size_t println(const char[]);
+    size_t println(char);
+    size_t println(unsigned char, int = DEC);
+    size_t println(int, int = DEC);
+    size_t println(unsigned int, int = DEC);
+    size_t println(long, int = DEC);
+    size_t println(unsigned long, int = DEC);
+    size_t println(double, int = 2);
+    size_t println(void);
+};
+#endif  // __cplusplus
+#endif /* #ifndef __ARDUINOAPI_PRINT_H__ */

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WString.cpp	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,644 @@
+/*
+  WString.cpp - String library for Wiring & Arduino
+  ...mostly rewritten by Paul Stoffregen...
+  Copyright (c) 2009-10 Hernando Barragan.  All rights reserved.
+  Copyright 2011, Paul Stoffregen, paul@pjrc.com
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "WString.h"
+
+
+/*********************************************/
+/*  Constructors                             */
+/*********************************************/
+
+String::String(const char *cstr)
+{
+    init();
+    if (cstr) copy(cstr, strlen(cstr));
+}
+
+String::String(const String &value)
+{
+    init();
+    *this = value;
+}
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+String::String(String &&rval)
+{
+    init();
+    move(rval);
+}
+String::String(StringSumHelper &&rval)
+{
+    init();
+    move(rval);
+}
+#endif
+
+String::String(char c)
+{
+    init();
+    char buf[2];
+    buf[0] = c;
+    buf[1] = 0;
+    *this = buf;
+}
+
+String::String(unsigned char value, unsigned char base)
+{
+    init();
+    char buf[9];
+    utoa(value, buf, base);
+    *this = buf;
+}
+
+String::String(int value, unsigned char base)
+{
+    init();
+    char buf[18];
+    itoa(value, buf, base);
+    *this = buf;
+}
+
+String::String(unsigned int value, unsigned char base)
+{
+    init();
+    char buf[17];
+    utoa(value, buf, base);
+    *this = buf;
+}
+
+String::String(long value, unsigned char base)
+{
+    init();
+    char buf[34];
+    ltoa(value, buf, base);
+    *this = buf;
+}
+
+String::String(unsigned long value, unsigned char base)
+{
+    init();
+    char buf[33];
+    ultoa(value, buf, base);
+    *this = buf;
+}
+
+String::~String()
+{
+    free(buffer);
+}
+
+/*********************************************/
+/*  Memory Management                        */
+/*********************************************/
+
+inline void String::init(void)
+{
+    buffer = NULL;
+    capacity = 0;
+    len = 0;
+    flags = 0;
+}
+
+void String::invalidate(void)
+{
+    if (buffer) free(buffer);
+    buffer = NULL;
+    capacity = len = 0;
+}
+
+unsigned char String::reserve(unsigned int size)
+{
+    if (buffer && capacity >= size) return 1;
+    if (changeBuffer(size)) {
+        if (len == 0) buffer[0] = 0;
+        return 1;
+    }
+    return 0;
+}
+
+unsigned char String::changeBuffer(unsigned int maxStrLen)
+{
+    char *newbuffer = (char *)realloc(buffer, maxStrLen + 1);
+    if (newbuffer) {
+        buffer = newbuffer;
+        capacity = maxStrLen;
+        return 1;
+    }
+    return 0;
+}
+
+/*********************************************/
+/*  Copy and Move                            */
+/*********************************************/
+
+String & String::copy(const char *cstr, unsigned int length)
+{
+    if (!reserve(length)) {
+        invalidate();
+        return *this;
+    }
+    len = length;
+    strcpy(buffer, cstr);
+    return *this;
+}
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+void String::move(String &rhs)
+{
+    if (buffer) {
+        if (capacity >= rhs.len) {
+            strcpy(buffer, rhs.buffer);
+            len = rhs.len;
+            rhs.len = 0;
+            return;
+        } else {
+            free(buffer);
+        }
+    }
+    buffer = rhs.buffer;
+    capacity = rhs.capacity;
+    len = rhs.len;
+    rhs.buffer = NULL;
+    rhs.capacity = 0;
+    rhs.len = 0;
+}
+#endif
+
+String & String::operator = (const String &rhs)
+{
+    if (this == &rhs) return *this;
+    
+    if (rhs.buffer) copy(rhs.buffer, rhs.len);
+    else invalidate();
+    
+    return *this;
+}
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+String & String::operator = (String &&rval)
+{
+    if (this != &rval) move(rval);
+    return *this;
+}
+
+String & String::operator = (StringSumHelper &&rval)
+{
+    if (this != &rval) move(rval);
+    return *this;
+}
+#endif
+
+String & String::operator = (const char *cstr)
+{
+    if (cstr) copy(cstr, strlen(cstr));
+    else invalidate();
+    
+    return *this;
+}
+
+/*********************************************/
+/*  concat                                   */
+/*********************************************/
+
+unsigned char String::concat(const String &s)
+{
+    return concat(s.buffer, s.len);
+}
+
+unsigned char String::concat(const char *cstr, unsigned int length)
+{
+    unsigned int newlen = len + length;
+    if (!cstr) return 0;
+    if (length == 0) return 1;
+    if (!reserve(newlen)) return 0;
+    strcpy(buffer + len, cstr);
+    len = newlen;
+    return 1;
+}
+
+unsigned char String::concat(const char *cstr)
+{
+    if (!cstr) return 0;
+    return concat(cstr, strlen(cstr));
+}
+
+unsigned char String::concat(char c)
+{
+    char buf[2];
+    buf[0] = c;
+    buf[1] = 0;
+    return concat(buf, 1);
+}
+
+unsigned char String::concat(unsigned char num)
+{
+    char buf[4];
+    itoa(num, buf, 10);
+    return concat(buf, strlen(buf));
+}
+
+unsigned char String::concat(int num)
+{
+    char buf[7];
+    itoa(num, buf, 10);
+    return concat(buf, strlen(buf));
+}
+
+unsigned char String::concat(unsigned int num)
+{
+    char buf[6];
+    utoa(num, buf, 10);
+    return concat(buf, strlen(buf));
+}
+
+unsigned char String::concat(long num)
+{
+    char buf[12];
+    ltoa(num, buf, 10);
+    return concat(buf, strlen(buf));
+}
+
+unsigned char String::concat(unsigned long num)
+{
+    char buf[11];
+    ultoa(num, buf, 10);
+    return concat(buf, strlen(buf));
+}
+
+/*********************************************/
+/*  Concatenate                              */
+/*********************************************/
+
+StringSumHelper & operator + (const StringSumHelper &lhs, const String &rhs)
+{
+    StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
+    if (!a.concat(rhs.buffer, rhs.len)) a.invalidate();
+    return a;
+}
+
+StringSumHelper & operator + (const StringSumHelper &lhs, const char *cstr)
+{
+    StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
+    if (!cstr || !a.concat(cstr, strlen(cstr))) a.invalidate();
+    return a;
+}
+
+StringSumHelper & operator + (const StringSumHelper &lhs, char c)
+{
+    StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
+    if (!a.concat(c)) a.invalidate();
+    return a;
+}
+
+StringSumHelper & operator + (const StringSumHelper &lhs, unsigned char num)
+{
+    StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
+    if (!a.concat(num)) a.invalidate();
+    return a;
+}
+
+StringSumHelper & operator + (const StringSumHelper &lhs, int num)
+{
+    StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
+    if (!a.concat(num)) a.invalidate();
+    return a;
+}
+
+StringSumHelper & operator + (const StringSumHelper &lhs, unsigned int num)
+{
+    StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
+    if (!a.concat(num)) a.invalidate();
+    return a;
+}
+
+StringSumHelper & operator + (const StringSumHelper &lhs, long num)
+{
+    StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
+    if (!a.concat(num)) a.invalidate();
+    return a;
+}
+
+StringSumHelper & operator + (const StringSumHelper &lhs, unsigned long num)
+{
+    StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
+    if (!a.concat(num)) a.invalidate();
+    return a;
+}
+
+/*********************************************/
+/*  Comparison                               */
+/*********************************************/
+
+int String::compareTo(const String &s) const
+{
+    if (!buffer || !s.buffer) {
+        if (s.buffer && s.len > 0) return 0 - *(unsigned char *)s.buffer;
+        if (buffer && len > 0) return *(unsigned char *)buffer;
+        return 0;
+    }
+    return strcmp(buffer, s.buffer);
+}
+
+unsigned char String::equals(const String &s2) const
+{
+    return (len == s2.len && compareTo(s2) == 0);
+}
+
+unsigned char String::equals(const char *cstr) const
+{
+    if (len == 0) return (cstr == NULL || *cstr == 0);
+    if (cstr == NULL) return buffer[0] == 0;
+    return strcmp(buffer, cstr) == 0;
+}
+
+unsigned char String::operator<(const String &rhs) const
+{
+    return compareTo(rhs) < 0;
+}
+
+unsigned char String::operator>(const String &rhs) const
+{
+    return compareTo(rhs) > 0;
+}
+
+unsigned char String::operator<=(const String &rhs) const
+{
+    return compareTo(rhs) <= 0;
+}
+
+unsigned char String::operator>=(const String &rhs) const
+{
+    return compareTo(rhs) >= 0;
+}
+
+unsigned char String::equalsIgnoreCase( const String &s2 ) const
+{
+    if (this == &s2) return 1;
+    if (len != s2.len) return 0;
+    if (len == 0) return 1;
+    const char *p1 = buffer;
+    const char *p2 = s2.buffer;
+    while (*p1) {
+        if (tolower(*p1++) != tolower(*p2++)) return 0;
+    } 
+    return 1;
+}
+
+unsigned char String::startsWith( const String &s2 ) const
+{
+    if (len < s2.len) return 0;
+    return startsWith(s2, 0);
+}
+
+unsigned char String::startsWith( const String &s2, unsigned int offset ) const
+{
+    if (offset > len - s2.len || !buffer || !s2.buffer) return 0;
+    return strncmp( &buffer[offset], s2.buffer, s2.len ) == 0;
+}
+
+unsigned char String::endsWith( const String &s2 ) const
+{
+    if ( len < s2.len || !buffer || !s2.buffer) return 0;
+    return strcmp(&buffer[len - s2.len], s2.buffer) == 0;
+}
+
+/*********************************************/
+/*  Character Access                         */
+/*********************************************/
+
+char String::charAt(unsigned int loc) const
+{
+    return operator[](loc);
+}
+
+void String::setCharAt(unsigned int loc, char c) 
+{
+    if (loc < len) buffer[loc] = c;
+}
+
+char & String::operator[](unsigned int index)
+{
+    static char dummy_writable_char;
+    if (index >= len || !buffer) {
+        dummy_writable_char = 0;
+        return dummy_writable_char;
+    }
+    return buffer[index];
+}
+
+char String::operator[]( unsigned int index ) const
+{
+    if (index >= len || !buffer) return 0;
+    return buffer[index];
+}
+
+void String::getBytes(unsigned char *buf, unsigned int bufsize, unsigned int index) const
+{
+    if (!bufsize || !buf) return;
+    if (index >= len) {
+        buf[0] = 0;
+        return;
+    }
+    unsigned int n = bufsize - 1;
+    if (n > len - index) n = len - index;
+    strncpy((char *)buf, buffer + index, n);
+    buf[n] = 0;
+}
+
+/*********************************************/
+/*  Search                                   */
+/*********************************************/
+
+int String::indexOf(char c) const
+{
+    return indexOf(c, 0);
+}
+
+int String::indexOf( char ch, unsigned int fromIndex ) const
+{
+    if (fromIndex >= len) return -1;
+    const char* temp = strchr(buffer + fromIndex, ch);
+    if (temp == NULL) return -1;
+    return temp - buffer;
+}
+
+int String::indexOf(const String &s2) const
+{
+    return indexOf(s2, 0);
+}
+
+int String::indexOf(const String &s2, unsigned int fromIndex) const
+{
+    if (fromIndex >= len) return -1;
+    const char *found = strstr(buffer + fromIndex, s2.buffer);
+    if (found == NULL) return -1;
+    return found - buffer;
+}
+
+int String::lastIndexOf( char theChar ) const
+{
+    return lastIndexOf(theChar, len - 1);
+}
+
+int String::lastIndexOf(char ch, unsigned int fromIndex) const
+{
+    if (fromIndex >= len) return -1;
+    char tempchar = buffer[fromIndex + 1];
+    buffer[fromIndex + 1] = '\0';
+    char* temp = strrchr( buffer, ch );
+    buffer[fromIndex + 1] = tempchar;
+    if (temp == NULL) return -1;
+    return temp - buffer;
+}
+
+int String::lastIndexOf(const String &s2) const
+{
+    return lastIndexOf(s2, len - s2.len);
+}
+
+int String::lastIndexOf(const String &s2, unsigned int fromIndex) const
+{
+    if (s2.len == 0 || len == 0 || s2.len > len) return -1;
+    if (fromIndex >= len) fromIndex = len - 1;
+    int found = -1;
+    for (char *p = buffer; p <= buffer + fromIndex; p++) {
+        p = strstr(p, s2.buffer);
+        if (!p) break;
+        if ((unsigned int)(p - buffer) <= fromIndex) found = p - buffer;
+    }
+    return found;
+}
+
+String String::substring( unsigned int left ) const
+{
+    return substring(left, len);
+}
+
+String String::substring(unsigned int left, unsigned int right) const
+{
+    if (left > right) {
+        unsigned int temp = right;
+        right = left;
+        left = temp;
+    }
+    String out;
+    if (left > len) return out;
+    if (right > len) right = len;
+    char temp = buffer[right];  // save the replaced character
+    buffer[right] = '\0';   
+    out = buffer + left;  // pointer arithmetic
+    buffer[right] = temp;  //restore character
+    return out;
+}
+
+/*********************************************/
+/*  Modification                             */
+/*********************************************/
+
+void String::replace(char find, char replace)
+{
+    if (!buffer) return;
+    for (char *p = buffer; *p; p++) {
+        if (*p == find) *p = replace;
+    }
+}
+
+void String::replace(const String& find, const String& replace)
+{
+    if (len == 0 || find.len == 0) return;
+    int diff = replace.len - find.len;
+    char *readFrom = buffer;
+    char *foundAt;
+    if (diff == 0) {
+        while ((foundAt = strstr(readFrom, find.buffer)) != NULL) {
+            memcpy(foundAt, replace.buffer, replace.len);
+            readFrom = foundAt + replace.len;
+        }
+    } else if (diff < 0) {
+        char *writeTo = buffer;
+        while ((foundAt = strstr(readFrom, find.buffer)) != NULL) {
+            unsigned int n = foundAt - readFrom;
+            memcpy(writeTo, readFrom, n);
+            writeTo += n;
+            memcpy(writeTo, replace.buffer, replace.len);
+            writeTo += replace.len;
+            readFrom = foundAt + find.len;
+            len += diff;
+        }
+        strcpy(writeTo, readFrom);
+    } else {
+        unsigned int size = len; // compute size needed for result
+        while ((foundAt = strstr(readFrom, find.buffer)) != NULL) {
+            readFrom = foundAt + find.len;
+            size += diff;
+        }
+        if (size == len) return;
+        if (size > capacity && !changeBuffer(size)) return; // XXX: tell user!
+        int index = len - 1;
+        while (index >= 0 && (index = lastIndexOf(find, index)) >= 0) {
+            readFrom = buffer + index + find.len;
+            memmove(readFrom + diff, readFrom, len - (readFrom - buffer));
+            len += diff;
+            buffer[len] = 0;
+            memcpy(buffer + index, replace.buffer, replace.len);
+            index--;
+        }
+    }
+}
+
+void String::toLowerCase(void)
+{
+    if (!buffer) return;
+    for (char *p = buffer; *p; p++) {
+        *p = tolower(*p);
+    }
+}
+
+void String::toUpperCase(void)
+{
+    if (!buffer) return;
+    for (char *p = buffer; *p; p++) {
+        *p = toupper(*p);
+    }
+}
+
+void String::trim(void)
+{
+    if (!buffer || len == 0) return;
+    char *begin = buffer;
+    while (isspace(*begin)) begin++;
+    char *end = buffer + len - 1;
+    while (isspace(*end) && end >= begin) end--;
+    len = end + 1 - begin;
+    if (begin > buffer) memcpy(buffer, begin, len);
+    buffer[len] = 0;
+}
+
+/*********************************************/
+/*  Parsing / Conversion                     */
+/*********************************************/
+
+long String::toInt(void) const
+{
+    if (buffer) return atol(buffer);
+    return 0;
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WString.h	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,203 @@
+/*
+  WString.h - String library for Wiring & Arduino
+  ...mostly rewritten by Paul Stoffregen...
+  Copyright (c) 2009-10 Hernando Barragan.  All right reserved.
+  Copyright 2011, Paul Stoffregen, paul@pjrc.com
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef __ARDUINOAPI_WSTRING_H__
+#define __ARDUINOAPI_WSTRING_H__
+#ifdef __cplusplus
+
+#include "mbed.h"
+
+#include "itoas.h"
+
+#include <ctype.h>
+#include <cstddef>
+#include <cstdlib>
+#include <cstdio>
+#include <cstring>
+
+
+// An inherited class for holding the result of a concatenation.  These
+// result objects are assumed to be writable by subsequent concatenations.
+class StringSumHelper;
+
+// The string class
+class String
+{
+    // use a function pointer to allow for "if (s)" without the
+    // complications of an operator bool(). for more information, see:
+    // http://www.artima.com/cppsource/safebool.html
+    typedef void (String::*StringIfHelperType)() const;
+    void StringIfHelper() const {}
+
+public:
+    // constructors
+    // creates a copy of the initial value.
+    // if the initial value is null or invalid, or if memory allocation
+    // fails, the string will be marked as invalid (i.e. "if (s)" will
+    // be false).
+    String(const char *cstr = "");
+    String(const String &str);
+    #ifdef __GXX_EXPERIMENTAL_CXX0X__
+    String(String &&rval);
+    String(StringSumHelper &&rval);
+    #endif
+    explicit String(char c);
+    explicit String(unsigned char, unsigned char base=10);
+    explicit String(int, unsigned char base=10);
+    explicit String(unsigned int, unsigned char base=10);
+    explicit String(long, unsigned char base=10);
+    explicit String(unsigned long, unsigned char base=10);
+    ~String(void);
+
+    // memory management
+    // return true on success, false on failure (in which case, the string
+    // is left unchanged).  reserve(0), if successful, will validate an
+    // invalid string (i.e., "if (s)" will be true afterwards)
+    unsigned char reserve(unsigned int size);
+    inline unsigned int length(void) const {return len;}
+
+    // creates a copy of the assigned value.  if the value is null or
+    // invalid, or if the memory allocation fails, the string will be 
+    // marked as invalid ("if (s)" will be false).
+    String & operator = (const String &rhs);
+    String & operator = (const char *cstr);
+    #ifdef __GXX_EXPERIMENTAL_CXX0X__
+    String & operator = (String &&rval);
+    String & operator = (StringSumHelper &&rval);
+    #endif
+
+    // concatenate (works w/ built-in types)
+    
+    // returns true on success, false on failure (in which case, the string
+    // is left unchanged).  if the argument is null or invalid, the 
+    // concatenation is considered unsucessful.  
+    unsigned char concat(const String &str);
+    unsigned char concat(const char *cstr);
+    unsigned char concat(char c);
+    unsigned char concat(unsigned char c);
+    unsigned char concat(int num);
+    unsigned char concat(unsigned int num);
+    unsigned char concat(long num);
+    unsigned char concat(unsigned long num);
+    
+    // if there's not enough memory for the concatenated value, the string
+    // will be left unchanged (but this isn't signalled in any way)
+    String & operator += (const String &rhs)    {concat(rhs); return (*this);}
+    String & operator += (const char *cstr)     {concat(cstr); return (*this);}
+    String & operator += (char c)           {concat(c); return (*this);}
+    String & operator += (unsigned char num)        {concat(num); return (*this);}
+    String & operator += (int num)          {concat(num); return (*this);}
+    String & operator += (unsigned int num)     {concat(num); return (*this);}
+    String & operator += (long num)         {concat(num); return (*this);}
+    String & operator += (unsigned long num)    {concat(num); return (*this);}
+
+    friend StringSumHelper & operator + (const StringSumHelper &lhs, const String &rhs);
+    friend StringSumHelper & operator + (const StringSumHelper &lhs, const char *cstr);
+    friend StringSumHelper & operator + (const StringSumHelper &lhs, char c);
+    friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned char num);
+    friend StringSumHelper & operator + (const StringSumHelper &lhs, int num);
+    friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned int num);
+    friend StringSumHelper & operator + (const StringSumHelper &lhs, long num);
+    friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned long num);
+
+    // comparison (only works w/ Strings and "strings")
+    operator StringIfHelperType() const { return buffer ? &String::StringIfHelper : 0; }
+    int compareTo(const String &s) const;
+    unsigned char equals(const String &s) const;
+    unsigned char equals(const char *cstr) const;
+    unsigned char operator == (const String &rhs) const {return equals(rhs);}
+    unsigned char operator == (const char *cstr) const {return equals(cstr);}
+    unsigned char operator != (const String &rhs) const {return !equals(rhs);}
+    unsigned char operator != (const char *cstr) const {return !equals(cstr);}
+    unsigned char operator <  (const String &rhs) const;
+    unsigned char operator >  (const String &rhs) const;
+    unsigned char operator <= (const String &rhs) const;
+    unsigned char operator >= (const String &rhs) const;
+    unsigned char equalsIgnoreCase(const String &s) const;
+    unsigned char startsWith( const String &prefix) const;
+    unsigned char startsWith(const String &prefix, unsigned int offset) const;
+    unsigned char endsWith(const String &suffix) const;
+
+    // character acccess
+    char charAt(unsigned int index) const;
+    void setCharAt(unsigned int index, char c);
+    char operator [] (unsigned int index) const;
+    char& operator [] (unsigned int index);
+    void getBytes(unsigned char *buf, unsigned int bufsize, unsigned int index=0) const;
+    void toCharArray(char *buf, unsigned int bufsize, unsigned int index=0) const
+        {getBytes((unsigned char *)buf, bufsize, index);}
+    const char * c_str() const { return buffer; }
+
+    // search
+    int indexOf( char ch ) const;
+    int indexOf( char ch, unsigned int fromIndex ) const;
+    int indexOf( const String &str ) const;
+    int indexOf( const String &str, unsigned int fromIndex ) const;
+    int lastIndexOf( char ch ) const;
+    int lastIndexOf( char ch, unsigned int fromIndex ) const;
+    int lastIndexOf( const String &str ) const;
+    int lastIndexOf( const String &str, unsigned int fromIndex ) const;
+    String substring( unsigned int beginIndex ) const;
+    String substring( unsigned int beginIndex, unsigned int endIndex ) const;
+
+    // modification
+    void replace(char find, char replace);
+    void replace(const String& find, const String& replace);
+    void toLowerCase(void);
+    void toUpperCase(void);
+    void trim(void);
+
+    // parsing/conversion
+    long toInt(void) const;
+
+protected:
+    char *buffer;           // the actual char array
+    unsigned int capacity;  // the array length minus one (for the '\0')
+    unsigned int len;       // the String length (not counting the '\0')
+    unsigned char flags;    // unused, for future features
+protected:
+    void init(void);
+    void invalidate(void);
+    unsigned char changeBuffer(unsigned int maxStrLen);
+    unsigned char concat(const char *cstr, unsigned int length);
+
+    // copy and move
+    String & copy(const char *cstr, unsigned int length);
+    #ifdef __GXX_EXPERIMENTAL_CXX0X__
+    void move(String &rhs);
+    #endif
+};
+
+class StringSumHelper : public String
+{
+public:
+    StringSumHelper(const String &s) : String(s) {}
+    StringSumHelper(const char *p) : String(p) {}
+    StringSumHelper(char c) : String(c) {}
+    StringSumHelper(unsigned char num) : String(num) {}
+    StringSumHelper(int num) : String(num) {}
+    StringSumHelper(unsigned int num) : String(num) {}
+    StringSumHelper(long num) : String(num) {}
+    StringSumHelper(unsigned long num) : String(num) {}
+};
+
+#endif  // __cplusplus
+#endif  // __ARDUINOAPI_WSTRING_H__

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/itoas.cpp	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,88 @@
+#include "itoas.h"
+
+char* ltoa( long value, char *string, int radix )
+{
+  char tmp[33];
+  char *tp = tmp;
+  long i;
+  unsigned long v;
+  int sign;
+  char *sp;
+  if ( string == NULL )
+  {
+    return 0 ;
+  }
+  if (radix > 36 || radix <= 1)
+  {
+    return 0 ;
+  }
+  sign = (radix == 10 && value < 0);
+  if (sign)
+  {
+    v = -value;
+  }
+  else
+  {
+    v = (unsigned long)value;
+  }
+  while (v || tp == tmp)
+  {
+    i = v % radix;
+    v = v / radix;
+    if (i < 10)
+      *tp++ = i+'0';
+    else
+      *tp++ = i + 'a' - 10;
+  }
+  sp = string;
+  if (sign)
+    *sp++ = '-';
+  while (tp > tmp)
+    *sp++ = *--tp;
+  *sp = 0;
+  return string;
+}
+
+char* ultoa( unsigned long value, char *string, int radix )
+{
+  char tmp[33];
+  char *tp = tmp;
+  long i;
+  unsigned long v = value;
+  char *sp;
+  if ( string == NULL )
+  {
+    return 0;
+  }
+  if (radix > 36 || radix <= 1)
+  {
+    return 0;
+  }
+ 
+  while (v || tp == tmp)
+  {
+    i = v % radix;
+    v = v / radix;
+    if (i < 10)
+      *tp++ = i+'0';
+    else
+      *tp++ = i + 'a' - 10;
+  }
+  sp = string;
+ 
+  while (tp > tmp)
+    *sp++ = *--tp;
+  *sp = 0;
+  return string;
+}
+
+
+char* itoa( int value, char *string, int radix )
+{
+  return ltoa( value, string, radix ) ;
+}
+
+char* utoa( unsigned long value, char *string, int radix )
+{
+  return ultoa( value, string, radix ) ;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/itoas.h	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,11 @@
+#ifndef __ARDUINOAPI_ITOAS_H__
+#define __ARDUINOAPI_ITOAS_H__
+
+#include "cstdlib"
+
+char* utoa( unsigned long value, char *string, int radix );
+char* itoa( int value, char *string, int radix );
+char* ultoa( unsigned long value, char *string, int radix );
+char* ltoa( long value, char *string, int radix );
+
+#endif /* #ifndef __ARDUINOAPI_ITOAS_H__ */
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/time.cpp	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,21 @@
+#include "time.h"
+
+static unsigned long one_millisecond_counter = 0;
+static void one_millisecond_callback(void) {
+    one_millisecond_counter++;
+}
+
+unsigned long millis(void) {
+    static Ticker milli_timer;
+    static bool attach_flag = true;
+    if (attach_flag) {
+        attach_flag = false;
+        milli_timer.attach_us(&one_millisecond_callback, 1000);
+    }
+    return one_millisecond_counter;
+}
+
+void delay(int t)
+{
+    wait_ms(t);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/time.h	Thu Feb 05 07:24:30 2015 +0000
@@ -0,0 +1,9 @@
+#ifndef _ARDUINOAPI_TIME_H__
+#define _ARDUINOAPI_TIME_H__
+
+#include "mbed.h"
+
+unsigned long millis(void);
+void delay(int t);
+
+#endif /*  _ARDUINOAPI_TIME_H__ */
\ No newline at end of file