ComRdTerm with multiple termination bytes

[ts3_SK]

Hi,

I need an UART read function that should read the stream and return when at least two specific characters are received. ComRdTerm has only one termination character. Is there maybe a workaround or method that will get it right?

Example:

TermChar: 0x0C 0x0A (in the same order)
Stream: 0x01 0x02 0x0A 0x0B 0x0C 0x0D 0x0F 0x0C 0x0A
                  -no-      -no-                -end-

[RobertoBozzolo]

As you can read in the help for the command:

If the termination character is a carriage return (CR or decimal 13) or a linefeed (LF or decimal 10), the function handles it as follows:

• If terminationByte = CR, and if the character immediately following CR is LF, ComRdTerm discards the LF in addition to the CR.
• If terminationByte = LF, and if the character immediately following LF is CR, ComRdTerm discards the CR in addition to the LF.

Does it satisfy your needs?

[ts3_SK]

The stream I receive is not ready when "CR" or "LF" character are received, only "CR + LF".

Example:

0x01 0x00 0x00 0x00 0x0C <- dont stop here 0x00 0x00 0x0A <- dont stop here also 0x00 0x00 0x0C 0x0A <-stop here

ComRdTerm will stop at 0x0C. But its not what I need.

[RobertoBozzolo · Accepted solution]

In this case ComRdTerm is not your solution: you must read periodically, accumulate in a buffer and handle the buffer. You can read wither with a Com callback triggered for any byte received or with a periodic task such a timer or so.