Arduino串行输出删除字符 [英] Arduino Serial Output Dropping Characters

问题描述

在尝试为Arduino Uno编写一些代码时，我在这里有一个奇怪的串行输出.

I have a bizarre one here with the serial output when trying to write some code for my Arduino Uno.

我有这个原始代码:

MyClass myclass;

void setup()
{
   Serial.Begin(9600);
   Serial.println("Starting...");
}

void loop()
{
   int status = myclass.DoWork();
   Serial.println("Status: " + status);
}

class MyClass 
{
   int DoWork()
   {
      Serial.println("Doing some work...");
      return 1;
   }
}

现在，当它运行时，我得到以下输出:

Now when this runs I get the following output:

开始...

做些工作...

atus:1

因此，奇怪的部分是状态:1"缺少前几个字符.这是因为我在对象中不正确地使用了串行还是什么?

So the strange part is the "Status: 1" missing the first few characters. Is this because I am using serial in an object improperly or something?

当我引用另一个像MyClass这样也使用串行接口的库时，我注意到我得到了其他奇怪的输出行为...所以我以为我做错了事.

I have noticed when I reference another library that also uses serial like MyClass does that I get other strange output behavior... so I assume that I am doing something wrong.

编辑:最后，这实际上是内存问题.我包括的一个库非常大，它正在消耗可用的内存.我通过添加更多调试语句发现了这一点，并发现损坏根据字符串的长度和位置而转移.通过使用F()函数，我将字符串移动到了闪存中(例如，我现在运行Serial.println(F("Starting ..."))；它已经纠正了奇怪的输出.

In the end this turned out to actually be a memory issue. A library I was including was quite large and it was consuming the available memory. I found this by adding a few more debugging statements and found the corruption shifted around based on the string lengths and positions. By using the F() function I moved the strings to flash memory (e.g. I now run Serial.println(F("Starting...")); and it has corrected the strange output.

推荐答案

最后，这实际上是内存问题.我包括的一个库非常大，它正在消耗可用的内存.我通过添加更多调试语句发现了这一点，并发现损坏根据字符串的长度和位置而转移.通过使用F()函数，我将字符串移动到了闪存中(例如，我现在运行Serial.println(F("Starting ..."))；它已经纠正了奇怪的输出.

In the end this turned out to actually be a memory issue. A library I was including was quite large and it was consuming the available memory. I found this by adding a few more debugging statements and found the corruption shifted around based on the string lengths and positions. By using the F() function I moved the strings to flash memory (e.g. I now run Serial.println(F("Starting...")); and it has corrected the strange output.

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