Serial communication with a header and a terminator

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Marzieh Karami
Marzieh Karami on 10 Jun 2019
Answered: Gayatri Menon on 4 Jan 2022
I want to send two uint16 numbers through the serial communication. The DSP wants the header and terminator to be equal to 'S' and 'E'. The command serial does not have an option for 'header' but it has an option for defining 'terminator'.
obj=serial(USBport);
obj.BaudRate=9600;
obj.Terminator='E';
obj.ByteOrder='LittleEndian';
To use the header I am writing
fwrite(obj,'S','char')
Now in order to send the two numbers I am using:
x = int16(1);
fwrite(obj,[x x],'int16')
I know that in each fwrite command an 'E' will be sent as well. How can I avoid this? Can I just send E at the end of the commands with another fwrite?
I am using this block to configure the DSP for receiving data.
  2 Comments
Marzieh Karami
Marzieh Karami on 17 Jun 2019
You are right! fwrite does not automatically send terminator.

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Answers (1)

Gayatri Menon
Gayatri Menon on 4 Jan 2022
Hi,
Protocol Decoder block and Protocol Encoder block might be useful in such scenarios.
For more info, refer the following links
Hope this helps
Thank you
Regards
Gayatri

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