Question

对于前面的代码，串口监视器将获得十六进制的消息，如“08000AE23BDB”，但在处理这些数据时只显示为“NaN”。我想也许只有字符串可以进行处理？但是“字符串缓冲区（缓冲区[count]）”似乎无法工作，我该如何转换呢？

以下是arduino的代码：

   #include <SoftwareSerial.h>

SoftwareSerial SoftSerial(2, 3);
unsigned char buffer[64]; // buffer array for data recieve over serial port
int count=0;     // counter for buffer array 

void setup()
{
  SoftSerial.begin(9600);               // the SoftSerial baud rate   
  Serial.begin(9600);             // the Serial port of Arduino baud rate.

}

void loop()
{

  if (SoftSerial.available())              // if date is comming from softwareserial port ==> data is comming from SoftSerial shield
  {
    while(SoftSerial.available())          // reading data into char array 
    {
      buffer[count++]=SoftSerial.read();     // writing data into array
      if(count == 64)break;
    }

    Serial.write(buffer,count);         // if no data transmission ends, write buffer to hardware serial port
    clearBufferArray();              // call clearBufferArray function to clear the storaged data from the array
    count = 0;                       // set counter of while loop to zero
  }
  if (Serial.available())            // if data is available on hardwareserial port ==> data is comming from PC or notebook
  {
    SoftSerial.write(Serial.read());       // write it to the SoftSerial shield
  }

}
void clearBufferArray()              // function to clear buffer array
{
  for (int i=0; i<count;i++){
    { 
      buffer[i]=NULL;
    }
  }                  // clear all index of array with command NULL
}

这是处理的按摩部分：

void serialEvent(Serial myPort) { 

  String inString = myPort.readStringUntil('\n');  

  if (inString != null) {
    inString = trim(inString);

    float[] data = float(split(inString, ","));

    if (data.length >=1) 
    {
      direction1 = data[0];
    }
    println("data");
    println(data[0]);
  }
}

Answer 1

也许这个？

 String inString = "08000AE23BDB ";

  if (inString != null) {
    inString = trim(inString);

    String[] data = split(inString, ",");

    if (data.length >=1) 
    {
      //direction1 = data[0];
    }
    println(unhex(data[0]));
  }

使用Arduino将缓冲区数组转换为可用字符串？（用于连接处理）

1 个答案: