C ++/CLI从串行端口读取二进制 [英] C++/CLI reading Binary From a Serial port

问题描述

我已经编写了通过串行端口读取字符串的代码，但是现在我需要对其进行更改以读取二进制输入.

这是我目前所拥有的

I have written code to read strings via the serial port, But now i need to alter it to read binary inputs.

Here is what I have at the moment

private: System::Void serialPort1_DataReceived(System::Object^  sender, System::IO::Ports::SerialDataReceivedEventArgs^  e) {
             if (_continue == true)
             {

                    String^ data = serialPort1->ReadExisting();             //Reading all exsisting data in serialport buffer
                    StreamWriter^ sw= File::AppendText(fileloc->Text);      //Seting stream wirter up and pointing to selected file
                    sw->Write(data);                                        //write data to same line
                    this->databox->AppendText(data);                        //write data to rich text box

                    sw->Flush();                                            
                    sw->Close();
             }
         }

这是我所做的一些更改

This is some of the changes that I have made

private: System::Void serialPort1_DataReceived(System::Object^  sender, System::IO::Ports::SerialDataReceivedEventArgs^  e) {
             if (_continue == true)
             {

                    int data= serialPort1->ReadByte();
                    BinaryWriter^ bw = gcnew BinaryWriter( File::Open(fileloc->Text,FileMode::Append));
                    bw->Write(data);
                    //this->databox->AppendText(data);       Not started on writing binary to the Rich text box

                    bw->Flush();
                    bw->Close();
             }
         }

感谢您的帮助！

Thanks for any help!

推荐答案

您需要循环调用ReadByte，直到返回-1.然后，您可能可以使用File::WriteAllBytes将其写入文件.如果要追加到文件，则需要编写更多代码(类似于您现在已有的代码.

而且我认为在富文本框中显示二进制数据没有意义.

[更新]
--------

示例Read用法:

为了示例，

You need to call ReadByte in a loop until it returns -1. And then you can probably use File::WriteAllBytes to write it to a file. If you want to append to the file, you''d need to write more code (something similar to what you already have now.

And I don''t think it makes sense to display binary data in a rich text box.

[Update]
--------

Example Read usage:

// 100 and 75 are arbitrary values for the sake of the example. 
// Do not hardcode this in your code.
array<byte>^ bytes = gcnew array<byte>(100);
serialPort->Read(bytes, 0, 75);

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