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Unable to print character value received on serial port in Matlab


Unable to print character value received on serial port in Matlab

By : joonaspessi
Date : November 19 2020, 12:41 AM
like below fixes the issue The fread function returns the character as number, i.e. the ASCII code. To convert it to the char type, you can use recv = char(recv) after receiving the character.
Another possibility would be to use recv = fscanf(serialOne,'%c',1) which will return one character directly in the char type.
code :


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Unable to print hex value of data receive from serial port

Unable to print hex value of data receive from serial port


By : helium
Date : March 29 2020, 07:55 AM
I hope this helps . Take a look at this post: Print a string as hex bytes?
You ultimately need to encode each character as it's raw hex byte using c.encode('hex') where c is a character in your string.
Unable to check received value on serial port in Matlab

Unable to check received value on serial port in Matlab


By : user2922948
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You can use deblank (removes all whitespace characters) or strtrim (removes only leading and trailing whitespace) to get rid of unwanted characters:
code :
a = sprintf('.\r\n');
disp(a)
.

strcmp(a,'.')
ans =

     0
strcmp(strtrim(a),'.')
ans =

     1
does arduino run the print function (print, println, printf, etc.) when no COM (Serial) port is connected or serial moni

does arduino run the print function (print, println, printf, etc.) when no COM (Serial) port is connected or serial moni


By : Jojo
Date : March 29 2020, 07:55 AM
Does that help Yes It will take processing time even if no serial monitor or other device is connected.
A good practice is to a have a #define pre-processor directive in your code indicating whether you are debugging or not.
code :
#ifdef DEBUG_PHASE
printf(...);
#endif
Add serial data received event handler to f# serial port reader

Add serial data received event handler to f# serial port reader


By : AnniElyn NaZarro Mor
Date : March 29 2020, 07:55 AM
I wish this help you I'm not an expert on how serial ports work, but you can wait for an event inside async workflow using the Async.AwaitEvent operation. So, you could write something like this:
code :
let writeAndRead () = async {
  let port = new SerialPort("COM1")
  port.Write("TEST")
  let mutable finished = false
  while not finished do
    let! e = port.DataReceived |> Async.AwaitEvent
    let data = port.ReadExisting()
    printfn "GOT: %A" data
    finished <- data.Contains("EOF") }
let writeAndRead () = async {
  let queue = BlockingQueueAgent<_>(Int32.MaxValue)
  let port = new SerialPort("COM1")
  port.DataReceived.Add(fun e -> queue.Add(e))
  port.Write("TEST")
  let mutable finished = false
  while not finished do
    let! e = queue.AsyncGet()
    let data = port.ReadExisting()
    finished <- data.Contains("EOF") }
received byte never over 127 in serial port

received byte never over 127 in serial port


By : Daniel Echeverri
Date : March 29 2020, 07:55 AM
will be helpful for those in need If you want to get the raw bytes, you should be using SerialPort.Read to read it into a byte array. Using SerialPort.ReadExisting to read the data into a string is going to force a conversion of some kind (i.e. encoding will convert bytes to chars).
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