C# 2, 10, 16 and 16 and their ASCII codes
--------//Conversion of various character types in C# for serial port communication------------
Understanding of character length
string s = "I am a 2 soldier";
int len = s.Length; 6 characters
byte[] sarr = System.Text.Encoding.Default.GetBytes(s);
len = sarr. Length; 11 bytes
It makes no sense to convert decimal to string, and it must be converted to the corresponding ASCII code
int t1 = 81;
string s1 = t1. ToString();
This decimal conversion corresponds to ASCII characters to make sense.
s1 = ((char)t1). ToString();
Hexadecimal to string: This doesn't make sense. It's tostring.
int intAB = 0x16;
s1 = intAB.ToString();
Hexadecimal to ASCII characters:
byte babb = 0x45;
string ass = ((char)babb). ToString();
ASCII strings to decimal numbers
string tr = "2Ab Liu";
string d ="";
for (int i = 0; i < tr. Length; i++)
{
int ii = (int)Convert.ToChar(tr. Substring(i, 1));
d = d +" "+ ii.ToString();
}
ASCII string to hexadecimal number
string s2 = "2Ab Liu";
byte[] ba = System.Text.ASCIIEncoding.Default.GetBytes(s2);
StringBuilder sb = new StringBuilder();
foreach (byte b in ba)
{
sb. Append(b.ToString("x") + " ");
}
Hexadecimal to decimal
int intA = 0x16; When defining, it must be 0x
string strA = "16"; Strings can be without
int intA1 = Convert.ToInt32(intA);
int intA2 = Convert.ToInt32(strA, 16);
10 to 16
strA = Convert.ToString(intA2, 16);
Decimal to binary, hexadecimal is similar
int int10 = 10;
string str2 = Convert.ToString(int10,2);
Binary to decimal
int10 = Convert.ToInt32(str2,2);
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How does c# serialport receive a set of hexadecimal numbers
How does C# SerialPort receive a set of hexadecimal numbers, and how should the program be written?
Best answer
System.IO.Ports.SerialPort sp = new System.IO.Ports.SerialPort("COM1");
int buffersize = 6; The size of the hexadecimal number (let's say 6Byte)
Byte[] buffer = new Byte[buffersize]; Create a buffer
sp. Read(buffer, 0, buffersize); Read from COM1
This set of hexadecimal numbers is processed
C# serial port sends data
Bounty points: 5 - Resolution time: 2009-10-19 21:15
I want to send a hex command to the serial port, the command string is: "00 00 00 1B 54 59 55 54 00 00 00 00 00 00 00 00 00 00 00 FF E1 00 05 00 0D 0A"
How can I convert the above string numerically so that the computer serial port knows that the string I sent is hexadecimal? Question Supplement:
Who has such a sample code, please help me, I am a hardware manufacturer, not familiar with software, I hope the master can give a detailed code, thank you! Questioner: daishuanqing - Intern Level 1
Best answer
Add a reference: Microsoft.VisualBasic (is C# code, but it needs to be referenced.) )
Traverse the SerialPortNames with the following to get all the serial ports
Microsoft.VisualBasic.Devices.Computer pc = new Microsoft.VisualBasic.Devices.Computer();
foreach (string s in pc. Ports.SerialPortNames)
{
this.comboBox1.Items.Add(s);
}
Then the serial port name comName displayed is used to obtain the operation object. You can open this serial port:
System.IO.Ports.SerialPort com = new System.IO.Ports.SerialPort(comName);
com. Open();
Data can then be written to the serial port
Sending data to serial port:
com. WriteLine(this.textBox1.Text);
byte arrays can also be written
com. Write(bArray,0,5); It refers to the 5 bytes starting from 0 that write the byte array bArray
Data can also be accepted:
com. ReadLine()
It is also possible to read bytes
com. ReadByte();
Finally, it is closed:
com. Close();
Also, convert the hexadecimal string to byte
byte b = Convert.ToByte("1A",16); C# serial port sends data
Bounty points: 5 - Resolution time: 2009-10-19 21:15
I want to send a hex command to the serial port, the command string is: "00 00 00 1B 54 59 55 54 00 00 00 00 00 00 00 00 00 00 00 FF E1 00 05 00 0D 0A"
How can I convert the above string numerically so that the computer serial port knows that the string I sent is hexadecimal? Question Supplement:
Who has such a sample code, please help me, I am a hardware manufacturer, not familiar with software, I hope the master can give a detailed code, thank you! Questioner: daishuanqing - Intern Level 1
Best answer
Add a reference: Microsoft.VisualBasic (is C# code, but it needs to be referenced.) )
Traverse the SerialPortNames with the following to get all the serial ports
Microsoft.VisualBasic.Devices.Computer pc = new Microsoft.VisualBasic.Devices.Computer();
foreach (string s in pc. Ports.SerialPortNames)
{
this.comboBox1.Items.Add(s);
}
Then the serial port name comName displayed is used to obtain the operation object. You can open this serial port:
System.IO.Ports.SerialPort com = new System.IO.Ports.SerialPort(comName);
com. Open();
Data can then be written to the serial port
Sending data to serial port:
com. WriteLine(this.textBox1.Text);
byte arrays can also be written
com. Write(bArray,0,5); It refers to the 5 bytes starting from 0 that write the byte array bArray
Data can also be accepted:
com. ReadLine()
It is also possible to read bytes
com. ReadByte();
Finally, it is closed:
com. Close();
Also, convert the hexadecimal string to byte
byte b = Convert.ToByte("1A",16); |
Posted on 8/9/2016 10:22:40 AM
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