mahmood Elnasser wrote:
-------------------------------
"How do you handle errors? , what if u didnt get 0x0D or 0x0A for half an hour coz you were in noisy environment. Your buffer would grow and grow till your program crashes"

Naturally also a linear buffer must test and handle overflow conditions like a circular buffer.
So it never crahses. If you send something and get no response because false data received, simple send the command again.


"Circular buffers are a must for text or binary messages."

No, only for binary data.


"I think its very easy to make things work in ideal conditions and for a short time but the real challenge is to make your circuit reliable and work under all conditions.
Any suggestions how you handle errors ?"

Some measuring equipment use a CRC, which was send as two hex digits after the data.


Peter