rosserial arduino hello world赢得'；无法验证

编辑：已解决

解决方案：

我正在运行Arduino 1.0.5

我通过更改/Sketchbook/library/ros_lib/ros/node_handle.h行260修复了这个问题

}else if (topic_ == TopicInfo::ID_TX_STOP){

到

但是，这给了我一条新的错误消息：

/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp: In member function 'size_t Print::print(const __FlashStringHelper*)':
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:44:9: error: 'prog_char' does not name a type
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:47:23: error: 'p' was not declared in this scope

/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp: In member function 'size_t Print::print(const __FlashStringHelper*)':
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:44:9: error: 'prog_char' does not name a type
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:47:23: error: 'p' was not declared in this scope

为了解决这个问题，我编辑了usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp，第44行

const prog_char *p = (const prog_char *)ifsh;

到

现在它编译了

原始问题：

我一直在使用本教程来设置所有内容：（）我可以毫无问题地安装所有内容，我认为ros_lib文件夹位于我的sketchbook库中。但是，当我在下一个教程中使用helloworld示例时，代码没有正确验证。当我尝试使用Arduino IDE中的复选标记进行验证时，会得到以下一组错误代码：

In file included from /home/user/sketchbook/libraries/ros_lib/ros.h:38:0,
from HelloWorld.cpp:6:
/home/user/sketchbook/libraries/ros_lib/ros/node_handle.h: In member function 'virtual int ros::NodeHandle_::spinOnce()':
/home/user/sketchbook/libraries/ros_lib/ros/node_handle.h:260:45: error: expected unqualified-id before numeric constant
/home/user/sketchbook/libraries/ros_lib/ros/node_handle.h:260:45: error: expected ')' before numeric constant

我已经重新安装了rosu库和rosserial，我一直收到这个错误，所以我不知道问题出在哪里。我查看了node_handle.h文件的第260行，但没有发现任何不合适的地方

这是node_handle.h：（间距可能有点小）

这给了我一个不同的错误消息：

/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp: In member function 'size_t Print::print(const __FlashStringHelper*)':
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:44:9: error: 'prog_char' does not name a type
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:47:23: error: 'p' was not declared in this scope

/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp: In member function 'size_t Print::print(const __FlashStringHelper*)':
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:44:9: error: 'prog_char' does not name a type
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:47:23: error: 'p' was not declared in this scope

这里是Print.cpp

/*
 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 "Arduino.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 __FlashStringHelper *ifsh)
{
  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;
}

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(const __FlashStringHelper *ifsh)
{
  size_t n = print(ifsh);
  n += println();
  return n;
}

size_t Print::print(const Printable& x)
{
  return x.printTo(*this);
}

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;
}

size_t Print::println(const Printable& x)
{
  size_t n = print(x);
  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;

  // 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;
}

/*
Print.cpp-提供Print（）和println（）的基类
版权所有（c）2008 David A.Mellis。保留所有权利。
这个图书馆是免费软件；您可以重新分发它和/或
根据GNU小公众的条款对其进行修改
自由软件基金会发布的许可证；任何一个
许可证的2.1版，或（由您选择）任何更高版本。
这个图书馆的发行是希望它会有用，
但无任何保证；甚至没有任何关于
适销性或适合某一特定目的。见GNU
有关更多详细信息，请参阅较低的通用公共许可证。
您应该已经收到GNU Lesser General Public的副本
与此库一起使用的许可证；如果没有，请写信给自由软件
基金会，51富兰克林ST，第五楼，波士顿，美国02110-1301
David A.Mellis于2006年11月23日修改
*/
#包括
#包括
#包括
#包括
#包括“Arduino.h”
#包括“Print.h”
//公共方法//////////////////////////////////////////////////////////////
/*默认实现：可能被覆盖*/
大小打印：：写入（常量8*buffer，大小）
{
尺寸n=0；
而（大小--）{
n+=写入（*缓冲++）；
}
返回n；
}
大小打印：：打印（常量FlashStringHelper*ifsh）
{
常量prog_char*p=（常量prog_char*）ifsh；
尺寸n=0；
而(1){
无符号字符c=pgm_read_字节（p++）；
如果（c==0）中断；
n+=写入（c）；
}
返回n；
}
大小打印：：打印（常量字符串和s）
{
尺寸n=0；
对于（uint16_t i=0；i0）
{
余数*=10.0；
int-toPrint=int（余数）；
n+=打印（toPrint）；
余数-=顶印；
} 
返回n；
}

/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp: In member function 'size_t Print::print(const __FlashStringHelper*)':
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:44:9: error: 'prog_char' does not name a type
/usr/share/arduino/hardware/arduino/cores/arduino/Print.cpp:47:23: error: 'p' was not declared in this scope

/*
 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 "Arduino.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 __FlashStringHelper *ifsh)
{
  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;
}

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(const __FlashStringHelper *ifsh)
{
  size_t n = print(ifsh);
  n += println();
  return n;
}

size_t Print::print(const Printable& x)
{
  return x.printTo(*this);
}

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;
}

size_t Print::println(const Printable& x)
{
  size_t n = print(x);
  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;

  // 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;
}