How does my code read all the bytes from serial first before continuing other process?

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Hi all,

I'm currently working on my small wsn project using arduino. I use my node for sending sensor data to my PC and I catch it using Serial Port programmed with C#. All the data from my node is encrypted using aes128. So I have to read the serial as byte in my C# program. The code below is how I read my serial.

C#

int databytes = ComPort.BytesToRead;
byte[] byte_buffer = new byte[databytes];
ComPort.Read(byte_buffer, 0, databytes);

The problem is when the program hasn't done read all the byte from buffer, it runs next process. I need help to make my program read all the byte first before running next process. Any suggestion?

Thanks

Posted 30-Sep-15 2:09am

Member 12008308

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CPallini · Answer 1 · 2015-09-30T02:25:00

Solution 1

Just 'run next process' after you have succesfully received all the needed data (this implies you probably have to wait for several DataReceived events).

Posted 30-Sep-15 2:25am

CPallini

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Member 12008308 30-Sep-15 9:04am

How? The data I need is 86 bytes long. How can I set the length of the serial buffer to wait until the 86 bytes are fully filled with data?

CPallini 30-Sep-15 9:09am

Usually you don't do that. Instead you append all availabe data of each DatarRceived event in a buffer, until reaching the target size.